android getApplication()使用
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package com.hyzing;import android.app.Application;public class MySystemAppcation extends Application{private int curIndex;public int getCurIndex() {return curIndex;}public void setCurIndex(int curIndex) {this.curIndex = curIndex;}@Overridepublic void onCreate() {super.onCreate();}@Overridepublic void onTerminate() {super.onTerminate();}}package com.hyzing;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.util.Log;public class SystemtestActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//setContentView(R.layout.main);MySystemAppcation application = (MySystemAppcation) this.getApplication();System.out.println("++++++++++++++"+application);Log.i("data", "===============" + application.getCurIndex());application.setCurIndex(5);Intent intent = new Intent(); Bundle bundle = new Bundle(); bundle.putString("checkIn", "0"); bundle.putBoolean("managerUser", true); intent.putExtras(bundle); intent.setClass(SystemtestActivity.this, PrintActivity.class); startActivity(intent);}}package com.hyzing;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.util.Log;public class PrintActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);MySystemAppcation application = (MySystemAppcation) this.getApplication();Log.i("data", "" + application.getCurIndex());application.setCurIndex(6);Intent intent = new Intent(); Bundle bundle = new Bundle(); bundle.putString("checkIn", "0"); bundle.putBoolean("managerUser", true); intent.putExtras(bundle); intent.setClass(PrintActivity.this, PrintAgainActivity.class); startActivity(intent);}}package com.hyzing;import android.app.Activity;import android.os.Bundle;import android.util.Log;public class PrintAgainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);final MySystemAppcation application = (MySystemAppcation) this.getApplication();Log.i("data", "" + application.getCurIndex());}}<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.hyzing" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="15" /> <application android:name=".MySystemAppcation" android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <activity android:name=".SystemtestActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".PrintActivity" android:label="@string/app_name" > </activity> <activity android:name=".PrintAgainActivity" android:label="@string/app_name" > </activity> </application></manifest>