android 获取超级管理员权限，进行锁屏、恢复出厂设置

获取超级管理员权限步骤：

1.创建 MyAdmin 的广播接受者继承 DeviceAdminReceiver

如：

package cn.itcast.lockscreen;
import android.app.admin.DeviceAdminReceiver;
public class MyAdmin extends DeviceAdminReceiver {
}

配置如下：

</receiver>

添加Xml文件：
my_admin.xml
<?xml version="1.0" encoding="utf-8"?>
<device-admin xmlns:android="http://schemas.android.com/apk/res/android">
<uses-policies>
<limit-password />
<watch-login />
<reset-password />
<force-lock />
<wipe-data />
</uses-policies>
</device-admin>

2.获取IDevicePolicyManager

Method method = Class.forName("android.os.ServiceManager")
.getMethod("getService", String.class);
IBinder binder = (IBinder) method.invoke(null,
new Object[] { Context.DEVICE_POLICY_SERVICE });
mService = IDevicePolicyManager.Stub.asInterface(binder);

3.注册广播接受者为admin设备
ComponentName mAdminName = new ComponentName(this, MyAdmin.class);
if (mService != null) {
if (!mService.isAdminActive(mAdminName)) {
Intent intent = new Intent(
DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
intent.putExtra (DevicePolicyManager.EXTRA_DEVICE_ADMIN,mAdminName);
startActivity(intent);
}

}

示例代码：

LockscreenActivity.java:

package cn.itcast.lockscreen;import android.app.Activity;import android.app.admin.DevicePolicyManager;import android.content.ComponentName;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;/** * device admin : 获取设备的超级管理员权限 *  * @author zehua *  */public class LockscreenActivity extends Activity implements OnClickListener {private Button bt_lock;private Button bt_wipe;DevicePolicyManager manager;ComponentName mAdminName;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);bt_lock = (Button) this.findViewById(R.id.button1);bt_wipe = (Button) this.findViewById(R.id.button2);bt_lock.setOnClickListener(this);bt_wipe.setOnClickListener(this);// 获取IDevicePolicyManagermanager = (DevicePolicyManager) getSystemService(DEVICE_POLICY_SERVICE);// 注册广播接受者为admin设备mAdminName = new ComponentName(this, MyAdmin.class);if (!manager.isAdminActive(mAdminName)) {Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, mAdminName);startActivity(intent);}}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.button1: // 锁屏manager.resetPassword("123", 0);manager.lockNow();// manager.removeActiveAdmin(mAdminName);break;case R.id.button2: // 重置手机为出厂模式//外部数据不会被删除manager.wipeData(0);break;}}}

MyAdmin.java:

package cn.itcast.lockscreen;import android.app.admin.DeviceAdminReceiver;public class MyAdmin extends DeviceAdminReceiver {}

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