Android系统亮屏、锁屏、屏幕解锁事件(解决部分手机亮屏后未解锁即进入resume状态)
有一部分三星的手机关闭屏幕以后，刚打开屏幕，前台的activity就会resume状态，因为我们使用cocos2d-x引擎，默认resume和activity的resume事件是一致的，我们在resume里把关闭的声音重新打开，所以导致，用户点亮屏幕以后（尚未解锁），就会听到游戏内的声音（如果在关闭屏幕时我们游戏处于前台）。
为了解决这个问题，我们需要修改我们resume触发的时机。确保在解锁以后才进入我们游戏的resume状态。
那么我们游戏应该在什么时机进入resume状态呢？
系统activity进入resume状态时刻，并且屏幕是亮的，屏幕未锁定屏幕刚刚亮起，并且屏幕 未锁定，系统activity已经进入resume状态屏幕 解锁，这是屏幕肯定是亮的，并且activity已经进入resume状态
那么有了上面的三点相信逻辑代码不难写，下面介绍一下如何坚挺系统屏幕灭，屏幕亮，解锁屏幕 的事件，以及如何判断当前屏幕 是否是解锁状态（因为用户可以设置关闭屏幕后是否锁定屏幕 ，所以解锁屏幕 事件可能根本就不会被触发，那么我们就不能通过跟踪事件来确定其状态）
要坚挺屏幕亮、屏幕灭、屏幕 解锁三个事件我们需要在代码中注册监听ACTION_SCREEN_ON、ACTION_SCREEN_OFF、ACTION_USER_PRESENT三个Action，具体的写法如下：
* screen状态广播接收者
private class ScreenBroadcastReceiver extends BroadcastReceiver{
public void onReceive(Context context, Intent intent) {
if(Intent.ACTION_SCREEN_ON.equals(intent.getAction())){
mScreenStateListener.onScreenOn();
}else if(Intent.ACTION_SCREEN_OFF.equals(intent.getAction())){
mScreenStateListener.onScreenOff();
}else if(Intent.ACTION_USER_PRESENT.equals(intent.getAction())){
mScreenStateListener.onUserPresent();
* 停止screen状态更新
public void stopScreenStateUpdate() {
mContext.unregisterReceiver(mScreenReceiver);
* 启动screen状态广播接收器
private void startScreenBroadcastReceiver() {
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
filter.addAction(Intent.ACTION_USER_PRESENT);
mContext.registerReceiver(mScreenReceiver, filter);
因为屏幕在灭了以后是否锁定可以由用户设置，所以我们不能通过跟踪解锁事件来判断其状态，需要一个可以时时获取状态的函数：
//判断屏幕是否被锁定
public final static boolean isScreenLocked(Context c) {
android.app.KeyguardManager mKeyguardManager = (KeyguardManager) c.getSystemService(c.KEYGUARD_SERVICE);
return mKeyguardManager.inKeyguardRestrictedInputMode();
需要注意的是，大部分事件都可以在Manifest.xml中注册，但是ACTION_SCREEN_ON、ACTION_SCREEN_OFF、ACTION_USER_PRESENT这几个事件在PowerManager那边做了限制，必须像上面那样在代码中注册，才能监听到，所以大家不要踩到坑哦~~~
下面是包装屏幕事件的一个类代码，仅供参考：
package com.example.
import java.lang.reflect.M
import android.app.A
import android.app.KeyguardM
import android.content.BroadcastR
import android.content.C
import android.content.I
import android.content.IntentF
import android.os.PowerM
import android.util.L
* 监听屏幕ON和OFF PRESENT状态
public class ScreenObserver {
private static String TAG = "ScreenObserver";
private Context mC
private ScreenBroadcastReceiver mScreenR
private ScreenStateListener mScreenStateL
private static Method mReflectScreenS
public ScreenObserver(Context context) {
mContext =
mScreenReceiver = new ScreenBroadcastReceiver();
mReflectScreenState = PowerManager.class.getMethod("isScreenOn",
new Class[] {});
} catch (Exception nsme) {
Log.d(TAG, "API < 7," + nsme);
* screen状态广播接收者
private class ScreenBroadcastReceiver extends BroadcastReceiver {
public void onReceive(Context context, Intent intent) {
if (Intent.ACTION_SCREEN_ON.equals(intent.getAction())) {
mScreenStateListener.onScreenOn();
} else if (Intent.ACTION_SCREEN_OFF.equals(intent.getAction())) {
mScreenStateListener.onScreenOff();
} else if (Intent.ACTION_USER_PRESENT.equals(intent.getAction())) {
mScreenStateListener.onUserPresent();
* 请求screen状态更新
public void requestScreenStateUpdate(ScreenStateListener listener) {
mScreenStateListener =
startScreenBroadcastReceiver();
firstGetScreenState();
* 第一次请求screen状态
private void firstGetScreenState() {
PowerManager manager = (PowerManager) mContext
.getSystemService(Activity.POWER_SERVICE);
if (isScreenOn(manager)) {
if (mScreenStateListener != null) {
mScreenStateListener.onScreenOn();
if (mScreenStateListener != null) {
mScreenStateListener.onScreenOff();
* 停止screen状态更新
public void stopScreenStateUpdate() {
mContext.unregisterReceiver(mScreenReceiver);
* 启动screen状态广播接收器
private void startScreenBroadcastReceiver() {
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
filter.addAction(Intent.ACTION_USER_PRESENT);
mContext.registerReceiver(mScreenReceiver, filter);
* screen是否打开状态
private static boolean isScreenOn(PowerManager pm) {
boolean screenS
screenState = (Boolean) mReflectScreenState.invoke(pm);
} catch (Exception e) {
screenState =
return screenS
// 外部调用接口
public interface ScreenStateListener {
public void onScreenOn();
public void onScreenOff();
public void onUserPresent();
public final static boolean isScreenLocked(Context c) {
android.app.KeyguardManager mKeyguardManager = (KeyguardManager) c
.getSystemService(c.KEYGUARD_SERVICE);
return mKeyguardManager.inKeyguardRestrictedInputMode();
上面代码参考：http://blog.csdn.net/m_changgong/article/details/7608911，特此注明。
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60140 人聚集在这个小组
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第三方登录：开机后触摸屏无反应，手机不能解锁？_百度知道手机黑屏时不用开关直接触屏就解锁是为什么_百度知道