Android 息屏亮屏代码实现

1，实现效果：

2，实现代码

【1】创建接收者

package com.xiaoshuai.www.screendemo;import android.app.admin.DeviceAdminReceiver;import android.content.Context;import android.content.Intent;import android.widget.Toast;/*** Created by Lenovo on 2019/7/21.*/public class ScreenOffAdminReceiver extends DeviceAdminReceiver {private void showToast(Context context, String msg) {Toast.makeText(context, msg, Toast.LENGTH_SHORT).show();}@Overridepublic void onEnabled(Context context, Intent intent) {showToast(context,"设备管理器使能");}@Overridepublic void onDisabled(Context context, Intent intent) {showToast(context,"设备管理器没有使能");}}

【2】添加权限，清单文件注册接收者

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.xiaoshuai.www.screendemo"><!-- 清除屏保需要的权限 --><uses-permission android:name="android.permission.DISABLE_KEYGUARD" /><!-- 唤醒屏幕需要的权限 --><uses-permission android:name="android.permission.WAKE_LOCK" /><application android:allowBackup="true" android:icon="@mipmap/ic_launcher"android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true" android:theme="@style/AppTheme"><activity android:name=".MainActivity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><receiverandroid:name="ScreenOffAdminReceiver"android:label="@string/app_name"android:permission="android.permission.BIND_DEVICE_ADMIN" ><meta-dataandroid:name="android.app.device_admin"android:resource="@xml/device_admin" /><intent-filter><action android:name="android.app.action.DEVICE_ADMIN_ENABLED" /></intent-filter></receiver></application></manifest>

【3】MainActivity代码

package com.xiaoshuai.www.screendemo;import android.app.KeyguardManager;import android.app.admin.DevicePolicyManager;import android.content.ComponentName;import android.content.Context;import android.content.Intent;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.os.PowerManager;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Toast;public class MainActivity extends AppCompatActivity {private String tag = "MainActivity";private Handler handler = new Handler() {@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);switch (msg.what) {case 1:checkScreenOn(null);break;case 2:break;}}};private DevicePolicyManager policyManager;private ComponentName adminReceiver;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);KeyguardManager km = (KeyguardManager) getSystemService(KEYGUARD_SERVICE);KeyguardManager.KeyguardLock kl = km.newKeyguardLock("name");kl.disableKeyguard();adminReceiver = new ComponentName(MainActivity.this, ScreenOffAdminReceiver.class);mPowerManager = (PowerManager) getSystemService(POWER_SERVICE);policyManager = (DevicePolicyManager) MainActivity.this.getSystemService(Context.DEVICE_POLICY_SERVICE);checkAndTurnOnDeviceManager(null);}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);isOpen();}private void isOpen() {if (policyManager.isAdminActive(adminReceiver)) {//判断超级管理员是否激活showToast("设备已被激活");} else {showToast("设备没有被激活");}}private PowerManager mPowerManager;private PowerManager.WakeLock mWakeLock;/*** @param view 检测屏幕状态*/public void checkScreen(View view) {PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);boolean screenOn = pm.isScreenOn();if (!screenOn) {//如果灭屏//相关操作showToast("屏幕是息屏");} else {showToast("屏幕是亮屏");}}/*** @param view 亮屏*/public void checkScreenOn(View view) {mWakeLock = mPowerManager.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, "tag");mWakeLock.acquire();mWakeLock.release();}/*** @param view 熄屏*/public void checkScreenOff(View view) {boolean admin = policyManager.isAdminActive(adminReceiver);if (admin) {policyManager.lockNow();} else {showToast("没有设备管理权限");}}/*** @param view 熄屏并延时亮屏*/public void checkScreenOffAndDelayOn(View view) {boolean admin = policyManager.isAdminActive(adminReceiver);if (admin) {policyManager.lockNow();handler.sendEmptyMessageDelayed(1, 3000);} else {showToast("没有设备管理权限");}}/*** @param view 检测并去激活设备管理器权限*/public void checkAndTurnOnDeviceManager(View view) {Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, adminReceiver);intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION, "开启后就可以使用锁屏功能了...");//显示位置见图二startActivityForResult(intent, 0);}private void showToast(String Str) {Toast.makeText(this, Str, Toast.LENGTH_SHORT).show();}}

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Android 息屏亮屏代码实现

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