1. 两种方案
(1) 监听BroadcastReceiver
(2)获取PowerManager事件
2. BroadcastReceiver
2.1. 事件
总共有3个事件：
Intent.ACTION_SCREEN_ON ： 屏幕点亮
Intent.ACTION_SCREEN_OFF ：屏幕关闭
Intent.ACTION_USER_PRESENT： 用户解锁
2.2. 权限
监听用户解锁需要在AndroidManifest中注册权限
2.3. IntentFilter代码
if (mContext != null) {
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);
}
3. PowerManager
PowerManager manager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
if (manager.isScreenOn()) {
if (mScreenStateListener != null) {
mScreenStateListener.onScreenOn();
}
} else {
if (mScreenStateListener != null) {
mScreenStateListener.onScreenOff();
}
}
4. Code
import android.annotation.SuppressLint;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.PowerManager;
/**
* Created by xiyanglu on 4/11/15.
*/
public class ScreenObserver {
private Context mContext;
private ScreenBroadcastReceiver mScreenReceiver;
private ScreenStateListener mScreenStateListener;
public ScreenObserver(Context context) {
mContext = context;
mScreenReceiver = new ScreenBroadcastReceiver();
}
public void startObserver(ScreenStateListener listener) {
mScreenStateListener = listener;
registerListener();
getScreenState();
}
public void shutdownObserver() {
unregisterListener();
}
/**
* 获取screen状态
*/
@SuppressLint("NewApi")
private void getScreenState() {
if (mContext == null) {
return;
}
PowerManager manager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
if (manager.isScreenOn()) {
if (mScreenStateListener != null) {
mScreenStateListener.onScreenOn();
}
} else {
if (mScreenStateListener != null) {
mScreenStateListener.onScreenOff();
}
}
}
private void registerListener() {
if (mContext != null) {
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);
}
}
private void unregisterListener() {
if (mContext != null)
mContext.unregisterReceiver(mScreenReceiver);
}
private class ScreenBroadcastReceiver extends BroadcastReceiver {
private String action = null;
@Override
public void onReceive(Context context, Intent intent) {
action = intent.getAction();
if (Intent.ACTION_SCREEN_ON.equals(action)) { // 开屏
mScreenStateListener.onScreenOn();
} else if (Intent.ACTION_SCREEN_OFF.equals(action)) { // 锁屏
mScreenStateListener.onScreenOff();
} else if (Intent.ACTION_USER_PRESENT.equals(action)) { // 解锁
mScreenStateListener.onUserPresent();
}
}
}
public interface ScreenStateListener {// 返回给调用者屏幕状态信息
public void onScreenOn();
public void onScreenOff();
public void onUserPresent();
}
}
5. 参考文献
[1] Android 监听屏幕解锁事件 /gf771115/article/details/7991892
原文：/matrix_laboratory/article/details/45061633
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