Android 監聽鎖屏/開屏事件

Android 監聽鎖屏/開屏事件
1. 兩種方案

（1） 監聽BroadcastReceiver

（2）擷取PowerManager事件

 

2. BroadcastReceiver2.1. 事件

總共有3個事件：

 

Intent.ACTION_SCREEN_ON ： 螢幕點亮Intent.ACTION_SCREEN_OFF ：螢幕關閉Intent.ACTION_USER_PRESENT： 使用者解鎖

 

 

2.2. 許可權

監聽使用者解鎖需要在AndroidManifest中註冊許可權

 

 

2.3. IntentFilter代碼

 

        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();    }    /**     * 擷取screen狀態     */    @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)) { // 開屏                mScreenStateListener.onScreenOn();            } else if (Intent.ACTION_SCREEN_OFF.equals(action)) { // 鎖屏                mScreenStateListener.onScreenOff();            } else if (Intent.ACTION_USER_PRESENT.equals(action)) { // 解鎖                mScreenStateListener.onUserPresent();            }        }    }    public interface ScreenStateListener {// 返回給調用者螢幕狀態資訊        public void onScreenOn();        public void onScreenOff();        public void onUserPresent();    }}

5. 參考文獻

 

[1] Android 監聽螢幕解鎖事件 http://blog.csdn.net/gf771115/article/details/7991892