一键锁屏 设备管理器

package com.itheima.mobilesafe;

import android.app.Activity;
import android.app.admin.DeviceAdminReceiver;
import android.app.admin.DevicePolicyManager;
import android.content.ComponentName;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

public class LockActivity extends Activity {
/**
* 设备策略服务
*/
private DevicePolicyManager dpm;

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
dpm = (DevicePolicyManager) getSystemService(DEVICE_POLICY_SERVICE);

openAdmin();

lockScreen();

finish();
}
/**
* 通过代码打开设备管理器
* @param view
*/
public void openAdmin() {
// 声明一个意图，作用是开启设备的超级管理员
Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
ComponentName cn = new ComponentName(this, MyAdmin.class);
intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, cn);
// 劝说用户开启管理员
intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION,
"开启我把。开启我就可以锁屏了，开启送积分");
startActivity(intent);
}

/**
* 锁屏
* 必须要手动添加到设备管理器才可以使用
* @param view
*/
public void lockScreen() {
ComponentName who = new ComponentName(this, MyAdmin.class);
if(dpm.isAdminActive(who)){
dpm.lockNow();// 锁屏
}else{
Toast.makeText(this,"还没有打开原理员权限",1).show();
}

//		dpm.resetPassword("111111",0);//设置屏幕打开秘密  密码如果为0 则取消密码
//清除Sdcard的数据
//		dpm.wipeData(DevicePolicyManager.WIPE_EXTERNAL_STORAGE);
//恢复出厂设置
//		dpm.wipeData(0);
}

public void uninstall(View view){
ComponentName cn = new ComponentName(this, MyAdmin.class);
//可以移除管理员
dpm.removeActiveAdmin(cn);
//在是一般的软件卸载
Intent intent = new Intent();
intent.setAction("android.intent.action.UNINSTALL_PACKAGE");
intent.addCategory("android.intent.category.DEFAULT");
intent.setData(Uri.parse("package:"+getPackageName()));
startActivity(intent);
}
}

/*
* public class DeviceAdminReceiver extends BroadcastReceiver
* 特殊的广播接收者
*/
class MyAdmin extends DeviceAdminReceiver {

}

<device-admin xmlns:android="http://schemas.android.com/apk/res/android">
<uses-policies>
<limit-password />
<watch-login />
<reset-password />
<force-lock />
<wipe-data />
<expire-password />
<encrypted-storage />
<disable-camera />
</uses-policies>
</device-admin>

<!-- 设备管理器配置 一键锁屏 -->
<receiver
android:name="com.itheima.mobilesafe.MyAdmin"
android:description="@string/sample_device_admin_description"
android:label="@string/sample_device_admin"
android:permission="android.permission.BIND_DEVICE_ADMIN" >
<meta-data
android:name="android.app.device_admin"
android:resource="@xml/device_admin_sample" />
<intent-filter>
<action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
</intent-filter>
</receiver>