第一章:具有抉择功能对话框

第一章:具有选择功能对话框
效果：









main.xml

<?xml version="1.0" encoding="utf-8"?><AbsoluteLayoutandroid:id="@+id/widget0"android:layout_width="fill_parent"android:layout_height="fill_parent"xmlns:android="http://schemas.android.com/apk/res/android"><Buttonandroid:id="@+id/selcet"android:layout_width="95px"android:layout_height="wrap_content"android:text="&#36873;&#25321;"android:layout_x="123px"android:layout_y="189px"></Button></AbsoluteLayout>

<?xml version="1.0" encoding="utf-8"?><resources>    <string name="hello">Hello World, AlertDialogTest!</string>    <string name="alert_select_title">请选择内容</string>    <string name="dialog_title">您选择的是:</string>    <string name="ok">确定</string>    <string name="cancel">取消</string>    <array name="alert_select_array">    <item>串串香</item>    <item>烤肉</item>    <item>火锅</item>    <item>肯德基</item>    </array>    <string name="app_name">AlertDialogTest</string></resources>

package alert.dialog.test;import android.app.Activity;import android.app.AlertDialog;import android.content.DialogInterface;import android.os.Bundle;import android.view.View;import android.widget.Button;public class AlertDialogTest extends Activity {        @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        /**载入main.xml */        setContentView(R.layout.main);        /**通过id找到button组件*/        Button bt=(Button)findViewById(R.id.selcet);        /**设置button按钮点击事件*/        bt.setOnClickListener(new Button.OnClickListener(){        public void onClick(View  v){        /**设置对话框标题,内容点击事件*/        new AlertDialog.Builder(AlertDialogTest.this).setTitle(R.string.alert_select_title).setItems(R.array.alert_select_array,  new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {/**获得strings.xml name="dialog_title"内容*/CharSequence strDialog=getString(R.string.dialog_title);/**获得strings.xml name="alert_select_array"数组内容*/String[] str=getResources().getStringArray(R.array.alert_select_array);new AlertDialog.Builder(AlertDialogTest.this).setMessage(strDialog+ str[which]).setNegativeButton(R.string.ok, new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {}}).show();}/**为选择对话框设置取消按钮事件*/}).setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.dismiss();}}).show();        }        });    }}