android实现一键锁屏
创建AdminReceiver
import android.app.admin.DeviceAdminReceiver;
public class AdminReceiver extends DeviceAdminReceiver {
}
在xml中创建device_admin.xml
<?xml version="1.0" encoding="utf-8"?>
<device-admin xmlns:android="http://schemas.android.com/apk/res/android" >
<uses-policies>
<force-lock />
</uses-policies>
</device-admin>
在manifest中加入
<receiver
android:name=".AdminReceiver"
android:permission="android.permission.BIND_DEVICE_ADMIN"
android:exported="false">
<meta-data
android:name="android.app.device_admin"
android:resource="@xml/device_admin" />
<intent-filter>
<action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
</intent-filter>
</receiver>
最后MainActivity
import androidx.appcompat.app.ActionBar;
import androidx.appcompat.app.AppCompatActivity;
import android.app.admin.DevicePolicyManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Process;
import android.os.SystemClock;
public class MainActivity extends AppCompatActivity {
private ComponentName componentName;
private void activeManager() {
//使用隐式意图调用系统方法来激活指定的设备管理器
Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, componentName);
intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION, "一键锁屏");
startActivity(intent);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ActionBar actionBar = getSupportActionBar();
actionBar.hide();
new Thread(new Runnable() {
@Override
public void run() {
DevicePolicyManager dpm = (DevicePolicyManager)
getSystemService(Context.DEVICE_POLICY_SERVICE);
componentName = new ComponentName(getApplicationContext(),
AdminReceiver.class);
if (dpm.isAdminActive(componentName)) {//判断是否有权限(激活了设备管理器)
dpm.lockNow();// 直接锁屏
//杀死当前应用
Process.killProcess(Process.myPid());
} else {
activeManager();//激活设备管理器获取权限
}
}
}).start();
}
}