如何监控安卓app自身被卸载

监控安卓app自身被卸载
public class AndroidLogcatScannerThread extends Thread {
private LogcatObserver observer;
public AndroidLogcatScannerThread(LogcatObserver observer) {
this.observer = observer;
}

public void run() {
String[] cmds = { "logcat", "-c" };
String shellCmd = "logcat";
Process process = null;
InputStream is = null;
DataInputStream dis = null;
String line = "";
Runtime runtime = Runtime.getRuntime();
try {
observer.handleLog(line);
int waitValue;
waitValue = runtime.exec(cmds).waitFor();
observer.handleLog("waitValue=" + waitValue + "\n Has do Clear logcat cache.");
process = runtime.exec(shellCmd);
is = process.getInputStream();
dis = new DataInputStream(is);
while ((line = dis.readLine()) != null) {
//Log.d("Log","Log.Bestpay:"+line);

if(observer!=null)
observer.handleLog(line);

}
} catch (InterruptedException e) {
e.printStackTrace();
} catch (IOException ie) {
ie.printStackTrace();
} finally {
try {
if (dis != null) {
dis.close();
}
if (is != null) {
is.close();
}
if (process != null) {
process.destroy();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
监控服务：

public class AndroidLogcatScannerService extends Service implements LogcatObserver{

@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
}

@Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
}

@Override
public void onStart(Intent intent, int startId) {
// TODO Auto-generated method stub
super.onStart(intent, startId);

AndroidLogcatScannerThread scannerThread=new AndroidLogcatScannerThread(AndroidLogcatScannerService.this);
scannerThread.start();
}

@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}

@Override
public void handleLog(String info) {
// TODO Auto-generated method stub
if (info.contains("android.intent.action.DELETE") && info.contains(getPackageName())) {

Intent intent = new Intent();
intent.setClass(AndroidLogcatScannerService.this, UninstallActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
}

}