Android-一键锁屏实现步骤

来源：互联网发布：苹果官方软件编辑：程序博客网时间：2024/05/17 06:40

1) 注册成为系统组件
–> 定义广播接收器DeviceAdminReceiver,重写onEnable(); onDisable()

public class DeviceAdminRC extends DeviceAdminReceiver {    @Override    public void onEnabled(Context context, Intent intent) {        Toast.makeText(context,"Registered",Toast.LENGTH_SHORT).show();        super.onEnabled(context, intent);    }    @Override    public void onDisabled(Context context, Intent intent) {        Toast.makeText(context,"Unregistered",Toast.LENGTH_SHORT).show();        super.onDisabled(context, intent);    }}

–>manifest 定义receiver

<receiver android:name=".DeviceAdminRC">    <meta-data        android:name="android.app.device_admin"        android:resource="@xml/device_admin" />    <intent-filter>        <action android:name="android.app.ation.DEVICE_ADMIN_ENABLED" />        <action android:name="android.app.ation.DEVICE_ADMIN_DISABLED" />    </intent-filter></receiver>

–> 添加device_admin.xml文件

<?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>

–> MainActivity 定义DevicePolicyManager

private DevicePolicyManager devicePolicyManager;

–> 初始化DevicePolicyManager

devicePolicyManager = (DevicePolicyManager) getSystemService(DEVICE_POLICY_SERVICE);

–> 注册成设备管理者

case R.id.btnRegisterDeviceAdmin:    Intent i = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);    i.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN,new ComponentName(this,DeviceAdminRC.class));    startActivity(i);    break;

–> 取消注册设备管理者

case R.id.btnUnregisterDeviceAdmin:    devicePolicyManager.removeActiveAdmin(new ComponentName(this,DeviceAdminRC.class));    break;

–>锁屏

case R.id.btnLockSreen:    devicePolicyManager.lockNow();    break;

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