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");
}
}
};