android程序的安装与卸载

Android

android在安装应用程序与卸载应用程序时都会发送广播，安装应用程序成功时会发送android.intent.action.PACKAGE_ADDED广播，可以通过intent.getDataString()获取安装应用的包名。当卸载应用程序成功时，系统会发送android.intent.action.PACKAGE_REMOVED广播，同样可以通过intetn.getDataString()获取应用的包名。

所以需要自定义一个BroadcastReceiver来对系统广播进行监听与处理。

1、自定义广播
自定义AppChangeTestReceiver继承自BroadcastReceiver,实现其onReceive()方式，具体代码如下。

public class AppChangTestReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
    final String action = intent.getAction();
    if(Intent.ACTION_PACKAGE_ADDED.equals(action)) {
        Log.i("AAA",">>>>>>>>>>>>>>>>>>>package added");
    } else if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
        Log.i("AAA",">>>>>>>>>>>>>>>>>>>package removed");
    }
	}
}

2、注册监听
1)XML方式：在AndroidManifest.xml的配置文件Application节点下，注册自定义的AppChangeTestReceiver,其生命周期默认是整个应用的生命周期

<?xml version="1.0" encoding="utf-8"?>

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".HomeActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <receiver android:name=".receiver.AppChangTestReceiver">
        <intent-filter>
            <action android:name="android.intent.action.PACKAGE_ADDED"/>
            <action android:name="android.intent.action.PACKAGE_REMOVED"/>
            <data android:scheme="package"/>
        </intent-filter>
    </receiver>
</application>
</manifest>

2）代码中动态注册：一般在Activity的onStart()方法中进行注册，在onStop或者在onDestroy方法中进行注销，其生命周期是Activity的生命周期。

   @Override
protected void onStart() {
    super.onStart();
    IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction(Intent.ACTION_PACKAGE_ADDED);
    intentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);
    intentFilter.addDataScheme("package");
    registerReceiver(mReceiver, intentFilter);
}
@Override
protected void onDestroy() {
    super.onDestroy();
    unregisterReceiver(mReceiver);
}
private BroadcastReceiver mReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        final String action = intent.getAction();
        if(Intent.ACTION_PACKAGE_ADDED.equals(action)) {
            Log.i("AAA","####################-------package added");
        } else if(Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
            Log.i("AAA","###################----------package removed");
        }
    }
};