Android 代碼監控apk安裝，卸載，替換

public class GetBroadcast extends BroadcastReceiver {

private static GetBroadcast mReceiver = new GetBroadcast();
private static IntentFilter mIntentFilter;
public static void registerReceiver(Context context) {
mIntentFilter = new IntentFilter();
mIntentFilter.addDataScheme("package");
mIntentFilter.addAction(Intent.ACTION_PACKAGE_ADDED);
mIntentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);
mIntentFilter.addAction(Intent.ACTION_PACKAGE_REPLACED);
context.registerReceiver(mReceiver, mIntentFilter);
}
public static void unregisterReceiver(Context context) {
context.unregisterReceiver(mReceiver);
}
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (Intent.ACTION_PACKAGE_ADDED.equals(action)) {
Toast.makeText(context, "有應用被添加", Toast.LENGTH_LONG).show();
} else if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
Toast.makeText(context, "有應用被刪除", Toast.LENGTH_LONG).show();
}
/*

else if(Intent.ACTION_PACKAGE_CHANGED.equals(action)){

Toast.makeText(context, "有應用被改變", Toast.LENGTH_LONG).show(); }


*/
else if (Intent.ACTION_PACKAGE_REPLACED.equals(action)) {
Toast.makeText(context, "有應用被替換", Toast.LENGTH_LONG).show();
}
/*

else if(Intent.ACTION_PACKAGE_RESTARTED.equals(action)){

Toast.makeText(context, "有應用被重啟", Toast.LENGTH_LONG).show(); }


*/
/*

else if(Intent.ACTION_PACKAGE_INSTALL.equals(action)){

Toast.makeText(context, "有應用被安裝", Toast.LENGTH_LONG).show(); }


*/
}
}</pre>