Android Open Source - example-lock-app Lock Device Receiver

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License

The source code is released under:

Apache License

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Java Source Code

package com.lockapp;
//  ww w  . j  a v  a  2  s . co m
import android.app.admin.DevicePolicyManager;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;

public class LockDeviceReceiver extends BroadcastReceiver {

  @Override
  public void onReceive(Context context, Intent intent) {
    DevicePolicyManager devicePolicyManager = (DevicePolicyManager)context.getSystemService(Context.DEVICE_POLICY_SERVICE);
    ComponentName lockDeviceComponent = new ComponentName(context, MainActivity.LockAppDeviceAdmin.class);
    if (devicePolicyManager.isAdminActive(lockDeviceComponent))
    {
      try {
          devicePolicyManager.lockNow();
      } catch (SecurityException se) {
        Toast.makeText(context, "Could not lock", Toast.LENGTH_SHORT).show();
      }
    }
        else {
            Toast.makeText(context, "Admin privilege required", Toast.LENGTH_SHORT).show();
        }
  }
}

Java Source Code List