Android支付接入（1）：支付宝

Android支付接入（一）：支付宝
相信相同过App获取利润的都会需要接入计费SDK，下边就跟大家走一遍完整的支付宝SDK接入，支付系列均通过计费Button触发，计费所有代码均放到一个java文件实现，这样虽然会有点违背java面向对象及封装性，但这样做的一个好处是可以快速集成到不同的游戏中，将改动的文件降到最低，各有利弊吧，如果大家有什么更好的方法，望一起交流，好了，废话不多说了，开始干活。PS：初次写博文，各方面还不够完善，看到此博文的朋友有什么意见或者建议请回复或者留言，你们的支持是我最大的动力。
注意事项：1.添加android.permission.INTERNET权限和android.permission.ACCESS_NETWORK_STATE权限2.代码中出现注释的地方重点看，没注释的地方可以不看3.参考下边代码及附带demo足以让你完成支付宝支付，若想了解支付宝更多相关问题请参考附带文档，demo及文档下载地址：http://pan.baidu.com/share/link?shareid=421254&uk=4731931314.想获取支付宝合作商户ID，及支付宝公钥请点击支付宝链接，生成密钥及PKCS8转码工具在文档中
好了，开始贴代码MainActivity（程序入口文件）package com.example.blogforzfb;import android.os.Bundle;import android.view.View;import android.app.Activity;
public class MainActivity extends Activity {
@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findViewById(R.id.button1).setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stub//拿到Fiap对象并传入容器Fiap fiap = new Fiap(MainActivity.this);//调用支付方法，并传入支付金额fiap.android_pay(0.01);}});}
}
Fiap.java（支付逻辑所在文件）package com.example.blogforzfb;
// 支付宝应用支付// 2012-09-20 14:41:47// (c) 2012 Catcap
import java.io.BufferedReader;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.HttpURLConnection;import java.net.InetSocketAddress;import java.net.Proxy;import java.net.URL;import java.net.URLEncoder;import java.security.KeyFactory;import java.security.PrivateKey;import java.security.PublicKey;import java.security.spec.PKCS8EncodedKeySpec;import java.security.spec.X509EncodedKeySpec;import java.util.ArrayList;import java.util.List;import javax.net.ssl.HostnameVerifier;import javax.net.ssl.HttpsURLConnection;import javax.net.ssl.SSLSession;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.message.BasicNameValuePair;import org.json.JSONException;import org.json.JSONObject;import com.alipay.android.app.IAlixPay;import com.alipay.android.app.IRemoteServiceCallback;import android.annotation.SuppressLint;import android.app.Activity;import android.app.AlertDialog;import android.app.ProgressDialog;import android.content.ComponentName;import android.content.Context;import android.content.DialogInterface;import android.content.Intent;import android.content.ServiceConnection;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.net.Uri;import android.os.Bundle;import android.os.Handler;import android.os.IBinder;import android.os.Looper;import android.os.Message;import android.os.RemoteException;import android.util.Log;import android.view.KeyEvent;import android.widget.Toast;

@SuppressLint ("HandlerLeak")public class Fiap{    Activity mActivity = null;        // ===================================    // JAVA 的接口    // ===================================           public Fiap(Activity activity){       mActivity = activity;       }        //这里传过来的是想支付多少钱(最好定义成double的，方便调试，毕竟每次测试都支付几元大洋不是每个人都负担的起的)    public void android_pay (double coin){       //支付宝支付必须依赖网络，所以在这里必须加网络判定        if (!is_can_internet (mActivity)){                   fiapHandler.sendEmptyMessage(1);            return;        }                Message msg = new Message ();        Bundle bundle = new Bundle();        bundle.putDouble("coin", coin);        msg.setData(bundle);        msg.what = 1;        fss.sendMessage (msg);    }        private Handler fiapHandler = new Handler(){       public void handleMessage(Message msg) {    if (msg.what == 1) {    new AlertDialog.Builder (mActivity).setTitle ("提示").setMessage ("连接不到网络。").setPositiveButton ("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubIntent intent = new Intent("android.settings.WIFI_SETTINGS");mActivity.startActivity(intent);}}).create ().show ();}    };    };        // ===================================    // 支付宝    // ===================================    public class PartnerConfig {
//以下配置涉及到公司内容，所以略去，需自己配置        // 合作商户ID。用签约支付宝账号登录ms.alipay.com后，在账户信息页面获取。        public static final String PARTNER = "";         // 商户收款的支付宝账号        public static final String SELLER = "";        // 商户（RSA）私钥(注意一定要转PKCS8格式，否则在Android4.0及以上系统会支付失败)        public static final String RSA_PRIVATE = "";        // 支付宝（RSA）公钥 用签约支付宝账号登录ms.alipay.com后，在密钥管理页面获取。        public static final String RSA_ALIPAY_PUBLIC = "";    }            private ProgressDialog mProgress = null;            public static class AlixOnCancelListener implements DialogInterface.OnCancelListener {        Activity mcontext;                        AlixOnCancelListener (Activity context){            mcontext = context;        }                        public void onCancel (DialogInterface dialog){            mcontext.onKeyDown (KeyEvent.KEYCODE_BACK, null);        }    }            private Handler fss = new Handler (){        @SuppressWarnings ("deprecation")        public void handleMessage (Message msg){            MobileSecurePayHelper mspHelper = new MobileSecurePayHelper (mActivity);            boolean isMobile_spExist = mspHelper.detectMobile_sp ();            if (!isMobile_spExist)                return;            // 根据订单信息开始进行支付            try{                // 准备订单信息                Bundle bundle = msg.getData();                double _coin = bundle.getDouble("coin");                String orderInfo = getOrderInfo(_coin);                // 这里根据签名方式对订单信息进行签名                String signType = getSignType ();                String strsign = sign (signType, orderInfo);                // 对签名进行编码                strsign = URLEncoder.encode (strsign);                // 组装好参数                String info = orderInfo + "&sign=" + """ + strsign + """ + "&" + getSignType ();                // 调用pay方法进行支付                MobileSecurePayer msp = new MobileSecurePayer ();                boolean bRet = msp.pay (info, mHandler, AlixId.RQF_PAY, mActivity);                if (bRet){                    // 显示“正在支付”进度条                    closeProgress ();                    mProgress = BaseHelper.showProgress (mActivity, null, "正在支付", false, true);                }            } catch (Exception ex){                ex.printStackTrace ();            }        }    };        private Handler mHandler = new Handler (){        public void handleMessage (Message msg){            try{                String strRet = (String) msg.obj;                switch (msg.what){                    case AlixId.RQF_PAY:{                        //                        closeProgress ();                        // 处理交易结果                        try{                            // 获取交易状态码，具体状态代码请参看文档                            String tradeStatus = "resultStatus={";                            int imemoStart = strRet.indexOf ("resultStatus=");                            imemoStart += tradeStatus.length ();                            int imemoEnd = strRet.indexOf ("};memo=");                            tradeStatus = strRet.substring (imemoStart, imemoEnd);                            //先验签通知                            ResultChecker resultChecker = new ResultChecker (strRet);                            int retVal = resultChecker.checkSign ();                            if (retVal == ResultChecker.RESULT_CHECK_SIGN_FAILED){                                BaseHelper.showDialog (mActivity, "提示", "您的订单信息已被非法篡改。", android.R.drawable.ic_dialog_alert);                            } else{                                if (tradeStatus.equals ("9000")){                                                                   //程序到这里表示支付已经成功了，想干什么就在这里干吧 -v-                                Toast.makeText(mActivity, "支付成功",Toast.LENGTH_LONG).show();                                Log.i("result of this pay:", "successful");                                                                } else if (!tradeStatus.equals ("4000")){                                                               //程序到这里表示此次支付失败，查看具体原因可以从这里打印个log                                Toast.makeText(mActivity, "支付失败,交易状态码为:" + tradeStatus, Toast.LENGTH_LONG).show();                                Log.e("result of this pay", "falied");                                }                            }                        } catch (Exception e){                            e.printStackTrace ();                        }                    }                        break;                }                super.handleMessage (msg);            } catch (Exception e){                e.printStackTrace ();            }        }    };            String getSignType (){        String getSignType = "sign_type=" + """ + "RSA" + """;        return getSignType;    }            void closeProgress (){        try{            if (mProgress != null){                mProgress.dismiss ();                mProgress = null;            }        } catch (Exception e){            e.printStackTrace ();        }    }            String getOrderInfo (double position){           String strOrderInfo = "partner=" + """ + PartnerConfig.PARTNER + """;        strOrderInfo += "&";        strOrderInfo += "seller=" + """ + PartnerConfig.SELLER + """;        strOrderInfo += "&";        strOrderInfo += "out_trade_no=" + """ + get_order_id () + """;        strOrderInfo += "&";                //这里是显示到支付宝支付界面上的付费信息提示（这里一定要严格按照此格式填写）        strOrderInfo += "subject=" + ""猫币"";        strOrderInfo += "&";        strOrderInfo += "body=" + ""购买猫币"";        strOrderInfo += "&";        strOrderInfo += "total_fee=" + """ + position + """;        strOrderInfo += "&";        strOrderInfo += "notify_url=" + """ + "http://notify.java.jpxx.org/index.jsp" + """;        return strOrderInfo;    }            String sign (String signType, String content){        return Rsa.sign (content, PartnerConfig.RSA_PRIVATE);    }           public boolean is_can_internet (final Context context){        try{            ConnectivityManager manger = (ConnectivityManager) context.getSystemService (Context.CONNECTIVITY_SERVICE);            NetworkInfo info = manger.getActiveNetworkInfo ();                        return (info != null && info.isConnected ());        } catch (Exception e){                   return false;        }    }           public String get_order_id (){        long ran1 = get_round (1111, 9999);        long ran2 = get_round (1111, 9999);                //注掉的这里是返回的渠道号（我们用的友盟）+随机数和当前系统时间组合        //return android_get_umeng_channel () + "_" + ran1 + System.currentTimeMillis () + ran2;        return "_"+ran1 + System.currentTimeMillis () + ran2;    }           public long get_round (int min, int max){        return Math.round (Math.random () * (max - min) + min);    }             =================================================================================================    //     // 支付宝不用动的    // ==================================================================================================    public final class AlixId {        public static final int BASE_ID = 0;        public static final int RQF_PAY = BASE_ID + 1;        public static final int RQF_INSTALL_CHECK = RQF_PAY + 1;    }        final class AlixDefine {        public static final String IMEI = "imei";        public static final String IMSI = "imsi";        public static final String KEY = "key";        public static final String USER_AGENT = "user_agent";        public static final String VERSION = "version";        public static final String DEVICE = "device";        public static final String SID = "sid";        public static final String partner = "partner";        public static final String charset = "charset";        public static final String sign_type = "sign_type";        public static final String sign = "sign";        public static final String URL = "URL";        public static final String split = "&";        public static final String AlixPay = "AlixPay";        public static final String action = "action";        public static final String actionUpdate = "update";        public static final String data = "data";        public static final String platform = "platform";    }        public static final class Base64 {        static private final int BASELENGTH = 128;        static private final int LOOKUPLENGTH = 64;        static private final int TWENTYFOURBITGROUP = 24;        static private final int EIGHTBIT = 8;        static private final int SIXTEENBIT = 16;        static private final int FOURBYTE = 4;        static private final int SIGN = -128;        static private final char PAD = '=';        static private final boolean fDebug = false;        static final private byte[] base64Alphabet = new byte[BASELENGTH];        static final private char[] lookUpBase64Alphabet = new char[LOOKUPLENGTH];        static{            for (int i = 0; i < BASELENGTH; ++i){                base64Alphabet[i] = -1;            }            for (int i = 'Z'; i >= 'A'; i--){                base64Alphabet[i] = (byte) (i - 'A');            }            for (int i = 'z'; i >= 'a'; i--){                base64Alphabet[i] = (byte) (i - 'a' + 26);            }            for (int i = '9'; i >= '0'; i--){                base64Alphabet[i] = (byte) (i - '0' + 52);            }            base64Alphabet['+'] = 62;            base64Alphabet['/'] = 63;            for (int i = 0; i <= 25; i++){                lookUpBase64Alphabet[i] = (char) ('A' + i);            }            for (int i = 26, j = 0; i <= 51; i++, j++){                lookUpBase64Alphabet[i] = (char) ('a' + j);            }            for (int i = 52, j = 0; i <= 61; i++, j++){                lookUpBase64Alphabet[i] = (char) ('0' + j);            }            lookUpBase64Alphabet[62] = (char) '+';            lookUpBase64Alphabet[63] = (char) '/';        }                        private static boolean isWhiteSpace (char octect){            return (octect == 0x20 || octect == 0xd || octect == 0xa || octect == 0x9);        }                        private static boolean isPad (char octect){            return (octect == PAD);        }                        private static boolean isData (char octect){            return (octect < BASELENGTH && base64Alphabet[octect] != -1);        }                               public static String encode (byte[] binaryData){            if (binaryData == null){                return null;            }            int lengthDataBits = binaryData.length * EIGHTBIT;            if (lengthDataBits == 0){                return "";            }            int fewerThan24bits = lengthDataBits % TWENTYFOURBITGROUP;            int numberTriplets = lengthDataBits / TWENTYFOURBITGROUP;            int numberQuartet = fewerThan24bits != 0? numberTriplets + 1 : numberTriplets;            char encodedData[] = null;            encodedData = new char[numberQuartet * 4];            byte k = 0, l = 0, b1 = 0, b2 = 0, b3 = 0;            int encodedIndex = 0;            int dataIndex = 0;            if (fDebug){                System.out.println ("number of triplets = " + numberTriplets);            }            for (int i = 0; i < numberTriplets; i++){                b1 = binaryData[dataIndex++];                b2 = binaryData[dataIndex++];                b3 = binaryData[dataIndex++];                if (fDebug){                    System.out.println ("b1= " + b1 + ", b2= " + b2 + ", b3= " + b3);                }                l = (byte) (b2 & 0x0f);                k = (byte) (b1 & 0x03);                byte val1 = ((b1 & SIGN) == 0)? (byte) (b1 >> 2) : (byte) ((b1) >> 2 ^ 0xc0);                byte val2 = ((b2 & SIGN) == 0)? (byte) (b2 >> 4) : (byte) ((b2) >> 4 ^ 0xf0);                byte val3 = ((b3 & SIGN) == 0)? (byte) (b3 >> 6) : (byte) ((b3) >> 6 ^ 0xfc);                if (fDebug){                    System.out.println ("val2 = " + val2);                    System.out.println ("k4   = " + (k << 4));                    System.out.println ("vak  = " + (val2 | (k << 4)));                }                encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];                encodedData[encodedIndex++] = lookUpBase64Alphabet[val2 | (k << 4)];                encodedData[encodedIndex++] = lookUpBase64Alphabet[(l << 2) | val3];                encodedData[encodedIndex++] = lookUpBase64Alphabet[b3 & 0x3f];            }            // form integral number of 6-bit groups            if (fewerThan24bits == EIGHTBIT){                b1 = binaryData[dataIndex];                k = (byte) (b1 & 0x03);                if (fDebug){                    System.out.println ("b1=" + b1);                    System.out.println ("b1<<2 = " + (b1 >> 2));                }                byte val1 = ((b1 & SIGN) == 0)? (byte) (b1 >> 2) : (byte) ((b1) >> 2 ^ 0xc0);                encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];                encodedData[encodedIndex++] = lookUpBase64Alphabet[k << 4];                encodedData[encodedIndex++] = PAD;                encodedData[encodedIndex++] = PAD;            } else if (fewerThan24bits == SIXTEENBIT){                b1 = binaryData[dataIndex];                b2 = binaryData[dataIndex + 1];                l = (byte) (b2 & 0x0f);                k = (byte) (b1 & 0x03);                byte val1 = ((b1 & SIGN) == 0)? (byte) (b1 >> 2) : (byte) ((b1) >> 2 ^ 0xc0);                byte val2 = ((b2 & SIGN) == 0)? (byte) (b2 >> 4) : (byte) ((b2) >> 4 ^ 0xf0);                encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];                encodedData[encodedIndex++] = lookUpBase64Alphabet[val2 | (k << 4)];                encodedData[encodedIndex++] = lookUpBase64Alphabet[l << 2];                encodedData[encodedIndex++] = PAD;            }            return new String (encodedData);        }                               public static byte[] decode (String encoded){            if (encoded == null){                return null;            }            char[] base64Data = encoded.toCharArray ();            // remove white spaces            int len = removeWhiteSpace (base64Data);            if (len % FOURBYTE != 0){                return null;// should be divisible by four            }            int numberQuadruple = (len / FOURBYTE);            if (numberQuadruple == 0){                return new byte[0];            }            byte decodedData[] = null;            byte b1 = 0, b2 = 0, b3 = 0, b4 = 0;            char d1 = 0, d2 = 0, d3 = 0, d4 = 0;            int i = 0;            int encodedIndex = 0;            int dataIndex = 0;            decodedData = new byte[(numberQuadruple) * 3];            for (; i < numberQuadruple - 1; i++){                if (!isData ((d1 = base64Data[dataIndex++])) || !isData ((d2 = base64Data[dataIndex++])) || !isData ((d3 = base64Data[dataIndex++])) || !isData ((d4 = base64Data[dataIndex++]))){                    return null;                }// if found "no data" just return null                b1 = base64Alphabet[d1];                b2 = base64Alphabet[d2];                b3 = base64Alphabet[d3];                b4 = base64Alphabet[d4];                decodedData[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);                decodedData[encodedIndex++] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));                decodedData[encodedIndex++] = (byte) (b3 << 6 | b4);            }            if (!isData ((d1 = base64Data[dataIndex++])) || !isData ((d2 = base64Data[dataIndex++]))){                return null;// if found "no data" just return null            }            b1 = base64Alphabet[d1];            b2 = base64Alphabet[d2];            d3 = base64Data[dataIndex++];            d4 = base64Data[dataIndex++];            if (!isData ((d3)) || !isData ((d4))){// Check if they are PAD characters                if (isPad (d3) && isPad (d4)){                    if ((b2 & 0xf) != 0)// last 4 bits should be zero                    {                        return null;                    }                    byte[] tmp = new byte[i * 3 + 1];                    System.arraycopy (decodedData, 0, tmp, 0, i * 3);                    tmp[encodedIndex] = (byte) (b1 << 2 | b2 >> 4);                    return tmp;                } else if (!isPad (d3) && isPad (d4)){                    b3 = base64Alphabet[d3];                    if ((b3 & 0x3) != 0)// last 2 bits should be zero                    {                        return null;                    }                    byte[] tmp = new byte[i * 3 + 2];                    System.arraycopy (decodedData, 0, tmp, 0, i * 3);                    tmp[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);                    tmp[encodedIndex] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));                    return tmp;                } else{                    return null;                }            } else{ // No PAD e.g 3cQl                b3 = base64Alphabet[d3];                b4 = base64Alphabet[d4];                decodedData[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);                decodedData[encodedIndex++] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));                decodedData[encodedIndex++] = (byte) (b3 << 6 | b4);            }            return decodedData;        }                               private static int removeWhiteSpace (char[] data){            if (data == null){                return 0;            }            // count characters that's not whitespace            int newSize = 0;            int len = data.length;            for (int i = 0; i < len; i++){                if (!isWhiteSpace (data[i])){                    data[newSize++] = data[i];                }            }            return newSize;        }    }        public static class BaseHelper {               public static String convertStreamToString (InputStream is){            BufferedReader reader = new BufferedReader (new InputStreamReader (is));            StringBuilder sb = new StringBuilder ();            String line = null;            try{                while ((line = reader.readLine ()) != null){                    sb.append (line);                }            } catch (IOException e){                e.printStackTrace ();            } finally{                try{                    is.close ();                } catch (IOException e){                    e.printStackTrace ();                }            }            return sb.toString ();        }                               public static void showDialog (Activity context, String strTitle, String strText, int icon){            AlertDialog.Builder tDialog = new AlertDialog.Builder (context);            tDialog.setIcon (icon);            tDialog.setTitle (strTitle);            tDialog.setMessage (strText);            tDialog.setPositiveButton ("确定", null);            tDialog.show ();        }                               public static void log (String tag, String info){            // Log.d(tag, info);        }                               public static void chmod (String permission, String path){            try{                String command = "chmod " + permission + " " + path;                Runtime runtime = Runtime.getRuntime ();                runtime.exec (command);            } catch (IOException e){                e.printStackTrace ();            }        }                        //        // show the progress bar.               public static ProgressDialog showProgress (Context context, CharSequence title, CharSequence message, boolean indeterminate, boolean cancelable){            ProgressDialog dialog = new ProgressDialog (context);            dialog.setTitle (title);            dialog.setMessage (message);            dialog.setIndeterminate (indeterminate);            dialog.setCancelable (false);            // dialog.setDefaultButton(false);            dialog.setOnCancelListener (new Fiap.AlixOnCancelListener ((Activity) context));            dialog.show ();            return dialog;        }                               public static JSONObject string2JSON (String str, String split){            JSONObject json = new JSONObject ();            try{                String[] arrStr = str.split (split);                for (int i = 0; i < arrStr.length; i++){                    String[] arrKeyValue = arrStr[i].split ("=");                    json.put (arrKeyValue[0], arrStr[i].substring (arrKeyValue[0].length () + 1));                }            } catch (Exception e){                e.printStackTrace ();            }            return json;        }    }        public class Constant {        public final static String server_url = "https://msp.alipay.com/x.htm";    }        public class MobileSecurePayer {        Integer lock = 0;        IAlixPay mAlixPay = null;        boolean mbPaying = false;        Activity mActivity = null;        // 和安全支付服务建立连接        private ServiceConnection mAlixPayConnection = new ServiceConnection (){            public void onServiceConnected (ComponentName className, IBinder service){                //                // wake up the binder to continue.                // 获得通信通道                synchronized (lock){                    mAlixPay = IAlixPay.Stub.asInterface (service);                    lock.notify ();                }            }                                    public void onServiceDisconnected (ComponentName className){                mAlixPay = null;            }        };                               public boolean pay (final String strOrderInfo, final Handler callback, final int myWhat, final Activity activity){            if (mbPaying)                return false;            mbPaying = true;            //            mActivity = activity;            // bind the service.            // 绑定服务            if (mAlixPay == null){                // 绑定安全支付服务需要获取上下文环境，                // 如果绑定不成功使用mActivity.getApplicationContext().bindService                // 解绑时同理                mActivity.getApplicationContext ().bindService (new Intent (IAlixPay.class.getName ()), mAlixPayConnection, Context.BIND_AUTO_CREATE);            }            // else ok.            // 实例一个线程来进行支付            new Thread (new Runnable (){                public void run (){                    try{                        // wait for the service bind operation to completely                        // finished.                        // Note: this is important,otherwise the next mAlixPay.Pay()                        // will fail.                        // 等待安全支付服务绑定操作结束                        // 注意：这里很重要，否则mAlixPay.Pay()方法会失败                        synchronized (lock){                            if (mAlixPay == null)                                lock.wait ();                        }                        // register a Callback for the service.                        // 为安全支付服务注册一个回调                        mAlixPay.registerCallback (mCallback);                        // call the MobileSecurePay service.                        // 调用安全支付服务的pay方法                        String strRet = mAlixPay.Pay (strOrderInfo);                        // set the flag to indicate that we have finished.                        // unregister the Callback, and unbind the service.                        // 将mbPaying置为false，表示支付结束                        // 移除回调的注册，解绑安全支付服务                        mbPaying = false;                        mAlixPay.unregisterCallback (mCallback);                        mActivity.getApplicationContext ().unbindService (mAlixPayConnection);                        // send the result back to caller.                        // 发送交易结果                        Message msg = new Message ();                        msg.what = myWhat;                        msg.obj = strRet;                        callback.sendMessage (msg);                    } catch (Exception e){                        e.printStackTrace ();                        // send the result back to caller.                        // 发送交易结果                        Message msg = new Message ();                        msg.what = myWhat;                        msg.obj = e.toString ();                        callback.sendMessage (msg);                    }                }            }).start ();            return true;        }                               private IRemoteServiceCallback mCallback = new IRemoteServiceCallback.Stub (){                       public void startActivity (String packageName, String className, int iCallingPid, Bundle bundle) throws RemoteException{                Intent intent = new Intent (Intent.ACTION_MAIN, null);                if (bundle == null)                    bundle = new Bundle ();                // else ok.                try{                    bundle.putInt ("CallingPid", iCallingPid);                    intent.putExtras (bundle);                } catch (Exception e){                    e.printStackTrace ();                }                intent.setClassName (packageName, className);                mActivity.startActivity (intent);            }
            @Override            public boolean isHideLoadingScreen () throws RemoteException{                return false;            }
            @Override            public void payEnd (boolean arg0, String arg1) throws RemoteException{                            }        };    }        public class MobileSecurePayHelper {        static final String TAG = "MobileSecurePayHelper";        private ProgressDialog mProgress = null;        Context mContext = null;                        public MobileSecurePayHelper (Context context){            this.mContext = context;        }                               public boolean detectMobile_sp (){            boolean isMobile_spExist = isMobile_spExist ();            if (!isMobile_spExist){                // 获取系统缓冲绝对路径 获取/data/data//cache目录                File cacheDir = mContext.getCacheDir ();                final String cachePath = cacheDir.getAbsolutePath () + "/temp.apk";                mProgress = BaseHelper.showProgress (mContext, null, "正在检测安全支付服务版本", false, true);                // 实例新线程检测是否有新版本进行下载                new Thread (new Runnable (){                    public void run (){                        // 检测是否有新的版本。                        String newApkdlUrl = checkNewUpdate ();                        closeProgress ();                        // 动态下载                        if (newApkdlUrl != null)                            retrieveApkFromNet (mContext, newApkdlUrl, cachePath);                        showInstallConfirmDialog (mContext, cachePath);                    }                }).start ();            }            return isMobile_spExist;        }                               public void showInstallConfirmDialog (final Context context, final String cachePath){            Looper.prepare ();            AlertDialog.Builder tDialog = new AlertDialog.Builder (context);            tDialog.setTitle ("安装提示");            tDialog.setMessage ("为保证您的交易安全，需要您安装支付宝安全支付服务，才能进行付款。\n\n点击确定，立即安装。");            tDialog.setPositiveButton ("确定", new DialogInterface.OnClickListener (){                public void onClick (DialogInterface dialog, int which){                    //                    // 修改apk权限                    BaseHelper.chmod ("777", cachePath);                    //                    // install the apk.                    // 安装安全支付服务APK                    Intent intent = new Intent (Intent.ACTION_VIEW);                    intent.addFlags (Intent.FLAG_ACTIVITY_NEW_TASK);                    intent.setDataAndType (Uri.parse ("file://" + cachePath), "application/vnd.android.package-archive");                    context.startActivity (intent);                }            });            tDialog.setNegativeButton ("取消", new DialogInterface.OnClickListener (){                public void onClick (DialogInterface dialog, int which){}            });            tDialog.show ();            Looper.loop ();        }                               public boolean isMobile_spExist (){            PackageManager manager = mContext.getPackageManager ();            List<PackageInfo> pkgList = manager.getInstalledPackages (0);            for (int i = 0; i < pkgList.size (); i++){                PackageInfo pI = pkgList.get (i);                if (pI.packageName.equalsIgnoreCase ("com.alipay.android.app"))                    return true;            }            return false;        }                               public boolean retrieveApkFromAssets (Context context, String fileName, String path){            boolean bRet = false;            try{                InputStream is = context.getAssets ().open (fileName);                File file = new File (path);                file.createNewFile ();                FileOutputStream fos = new FileOutputStream (file);                byte[] temp = new byte[1024];                int i = 0;                while ((i = is.read (temp)) > 0){                    fos.write (temp, 0, i);                }                fos.close ();                is.close ();                bRet = true;            } catch (IOException e){                e.printStackTrace ();            }            return bRet;        }                               public PackageInfo getApkInfo (Context context, String archiveFilePath){            PackageManager pm = context.getPackageManager ();            PackageInfo apkInfo = pm.getPackageArchiveInfo (archiveFilePath, PackageManager.GET_META_DATA);            return apkInfo;        }                               public String checkNewUpdate (){            String url = null;            try{//                JSONObject resp = sendCheckNewUpdate (packageInfo.versionName);                 JSONObject resp = sendCheckNewUpdate("1.0.0");                if (resp.getString ("needUpdate").equalsIgnoreCase ("true")){                    url = resp.getString ("updateUrl");                }                // else ok.            } catch (Exception e){                e.printStackTrace ();            }            return url;        }                               public JSONObject sendCheckNewUpdate (String versionName){            JSONObject objResp = null;            try{                JSONObject req = new JSONObject ();                req.put (AlixDefine.action, AlixDefine.actionUpdate);                JSONObject data = new JSONObject ();                data.put (AlixDefine.platform, "android");                data.put (AlixDefine.VERSION, versionName);                data.put (AlixDefine.partner, "");                req.put (AlixDefine.data, data);                objResp = sendRequest (req.toString ());            } catch (JSONException e){                e.printStackTrace ();            }            return objResp;        }                               public JSONObject sendRequest (final String content){            NetworkManager nM = new NetworkManager (this.mContext);            //            JSONObject jsonResponse = null;            try{                String response = null;                synchronized (nM){                    //                    response = nM.SendAndWaitResponse (content, Constant.server_url);                }                jsonResponse = new JSONObject (response);            } catch (Exception e){                e.printStackTrace ();            }            //            if (jsonResponse != null)                BaseHelper.log (TAG, jsonResponse.toString ());            return jsonResponse;        }                               public boolean retrieveApkFromNet (Context context, String strurl, String filename){            boolean bRet = false;            try{                NetworkManager nM = new NetworkManager (this.mContext);                bRet = nM.urlDownloadToFile (context, strurl, filename);            } catch (Exception e){                e.printStackTrace ();            }            return bRet;        }                        //        // close the progress bar        void closeProgress (){            try{                if (mProgress != null){                    mProgress.dismiss ();                    mProgress = null;                }            } catch (Exception e){                e.printStackTrace ();            }        }    }        public class NetworkManager {        static final String TAG = "NetworkManager";        private int connectTimeout = 30 * 1000;        private int readTimeout = 30 * 1000;        Proxy mProxy = null;        Context mContext;                        public NetworkManager (Context context){            this.mContext = context;            setDefaultHostnameVerifier ();        }                               @SuppressWarnings ("deprecation")        private void detectProxy (){            ConnectivityManager cm = (ConnectivityManager) mContext.getSystemService (Context.CONNECTIVITY_SERVICE);            NetworkInfo ni = cm.getActiveNetworkInfo ();            if (ni != null && ni.isAvailable () && ni.getType () == ConnectivityManager.TYPE_MOBILE){                String proxyHost = android.net.Proxy.getDefaultHost ();                int port = android.net.Proxy.getDefaultPort ();                if (proxyHost != null){                    final InetSocketAddress sa = new InetSocketAddress (proxyHost, port);                    mProxy = new Proxy (Proxy.Type.HTTP, sa);                }            }        }                        private void setDefaultHostnameVerifier (){            //            HostnameVerifier hv = new HostnameVerifier (){                public boolean verify (String hostname, SSLSession session){                    return true;                }            };            HttpsURLConnection.setDefaultHostnameVerifier (hv);        }                               public String SendAndWaitResponse (String strReqData, String strUrl){            //            detectProxy ();            String strResponse = null;            ArrayList<BasicNameValuePair> pairs = new ArrayList<BasicNameValuePair> ();            pairs.add (new BasicNameValuePair ("requestData", strReqData));            HttpURLConnection httpConnect = null;            UrlEncodedFormEntity p_entity;            try{                p_entity = new UrlEncodedFormEntity (pairs, "utf-8");                URL url = new URL (strUrl);                if (mProxy != null){                    httpConnect = (HttpURLConnection) url.openConnection (mProxy);                } else{                    httpConnect = (HttpURLConnection) url.openConnection ();                }                httpConnect.setConnectTimeout (connectTimeout);                httpConnect.setReadTimeout (readTimeout);                httpConnect.setDoOutput (true);                httpConnect.addRequestProperty ("Content-type", "application/x-www-form-urlencoded;charset=utf-8");                httpConnect.connect ();                OutputStream os = httpConnect.getOutputStream ();                p_entity.writeTo (os);                os.flush ();                InputStream content = httpConnect.getInputStream ();                strResponse = BaseHelper.convertStreamToString (content);                BaseHelper.log (TAG, "response " + strResponse);            } catch (IOException e){                e.printStackTrace ();            } finally{                httpConnect.disconnect ();            }            return strResponse;        }                               public boolean urlDownloadToFile (Context context, String strurl, String path){            boolean bRet = false;            //            detectProxy ();            try{                URL url = new URL (strurl);                HttpURLConnection conn = null;                if (mProxy != null){                    conn = (HttpURLConnection) url.openConnection (mProxy);                } else{                    conn = (HttpURLConnection) url.openConnection ();                }                conn.setConnectTimeout (connectTimeout);                conn.setReadTimeout (readTimeout);                conn.setDoInput (true);                conn.connect ();                InputStream is = conn.getInputStream ();                File file = new File (path);                file.createNewFile ();                FileOutputStream fos = new FileOutputStream (file);                byte[] temp = new byte[1024];                int i = 0;                while ((i = is.read (temp)) > 0){                    fos.write (temp, 0, i);                }                fos.close ();                is.close ();                bRet = true;            } catch (IOException e){                e.printStackTrace ();            }            return bRet;        }    }        public class ResultChecker {        public static final int RESULT_INVALID_PARAM = 0;        public static final int RESULT_CHECK_SIGN_FAILED = 1;        public static final int RESULT_CHECK_SIGN_SUCCEED = 2;        String mContent;                        public ResultChecker (String content){            this.mContent = content;        }                               int checkSign (){            int retVal = RESULT_CHECK_SIGN_SUCCEED;            try{                JSONObject objContent = BaseHelper.string2JSON (this.mContent, ";");                String result = objContent.getString ("result");                result = result.substring (1, result.length () - 1);                // 获取待签名数据                int iSignContentEnd = result.indexOf ("&sign_type=");                String signContent = result.substring (0, iSignContentEnd);                // 获取签名                JSONObject objResult = BaseHelper.string2JSON (result, "&");                String signType = objResult.getString ("sign_type");                signType = signType.replace (""", "");                String sign = objResult.getString ("sign");                sign = sign.replace (""", "");                // 进行验签 返回验签结果                if (signType.equalsIgnoreCase ("RSA")){                    if (!Rsa.doCheck (signContent, sign, PartnerConfig.RSA_ALIPAY_PUBLIC))                        retVal = RESULT_CHECK_SIGN_FAILED;                }            } catch (Exception e){                retVal = RESULT_INVALID_PARAM;                e.printStackTrace ();            }            return retVal;        }    }        public static class Rsa {        public static final String SIGN_ALGORITHMS = "SHA1WithRSA";                        public static String sign (String content, String privateKey){            String charset = "utf-8";            try{                PKCS8EncodedKeySpec priPKCS8 = new PKCS8EncodedKeySpec (Base64.decode (privateKey));                KeyFactory keyf = KeyFactory.getInstance ("RSA");                PrivateKey priKey = keyf.generatePrivate (priPKCS8);                java.security.Signature signature = java.security.Signature.getInstance (SIGN_ALGORITHMS);                signature.initSign (priKey);                signature.update (content.getBytes (charset));                byte[] signed = signature.sign ();                return Base64.encode (signed);            } catch (Exception e){                e.printStackTrace ();            }            return null;        }                        public static boolean doCheck (String content, String sign, String publicKey){            try{                KeyFactory keyFactory = KeyFactory.getInstance ("RSA");                byte[] encodedKey = Base64.decode (publicKey);                PublicKey pubKey = keyFactory.generatePublic (new X509EncodedKeySpec (encodedKey));                java.security.Signature signature = java.security.Signature.getInstance (SIGN_ALGORITHMS);                signature.initVerify (pubKey);                signature.update (content.getBytes ("utf-8"));                boolean bverify = signature.verify (Base64.decode (sign));                return bverify;            } catch (Exception e){                e.printStackTrace ();            }            return false;        }    }}
以上即为支付宝SDK的接入流程