Android programming to monitor apk installation uninstall replace method

This article describes the Android programming monitoring apk installation, uninstall, replace the method. To share for your reference, the details are as follows:

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, " There are applications added ", Toast.LENGTH_LONG).show();
    } else if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
      Toast.makeText(context, " Some apps have been deleted ", Toast.LENGTH_LONG).show();
    }
    /*
    * else if(Intent.ACTION_PACKAGE_CHANGED.equals(action)){
    * Toast.makeText(context, " There are applications that have been changed ", Toast.LENGTH_LONG).show(); }
    */
    else if (Intent.ACTION_PACKAGE_REPLACED.equals(action)) {
      Toast.makeText(context, " There are applications that are replaced ", Toast.LENGTH_LONG).show();
    }
    /*
    * else if(Intent.ACTION_PACKAGE_RESTARTED.equals(action)){
    * Toast.makeText(context, " An application has been restarted ", Toast.LENGTH_LONG).show(); }
    */
    /*
    * else if(Intent.ACTION_PACKAGE_INSTALL.equals(action)){
    * Toast.makeText(context, " There are applications installed ", Toast.LENGTH_LONG).show(); }
    */
  }
}

I hope this article has been helpful in Android programming.