Android监听屏幕屏幕锁屏与解锁

/** * 创建一个监听器类 监听android锁屏与解锁事件 */public class ScreenListener {    private Context mContext;    private ScreenBroadcastReceiver mScreenReceiver;    private ScreenStateListener mScreenStateListener;    public ScreenListener(Context context) {        mContext = context;        mScreenReceiver = new ScreenBroadcastReceiver();    }    /**     * screen状态广播接收者     */    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();            }        }    }    /**     * 开始监听screen状态     *     * @param listener     */    public void begin(ScreenStateListener listener) {        mScreenStateListener = listener;        registerListener();        getScreenState();    }    /**     * 获取screen状态     */    private void getScreenState() {        PowerManager manager = (PowerManager) mContext                .getSystemService(Context.POWER_SERVICE);        if (manager.isScreenOn()) {            if (mScreenStateListener != null) {                mScreenStateListener.onScreenOn();            }        } else {            if (mScreenStateListener != null) {                mScreenStateListener.onScreenOff();            }        }    }    /**     * 停止screen状态监听     */    public void unregisterListener() {        mContext.unregisterReceiver(mScreenReceiver);    }    /**     * 启动screen状态广播接收器     */    private void registerListener() {        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);    }    public interface ScreenStateListener {// 返回给调用者屏幕状态信息        public void onScreenOn();        public void onScreenOff();        public void onUserPresent();    }}

在需要监听解锁或锁屏的Activity或者Fragment里边添加

ScreenListener mScreenListener;

在初始化onCreate或者 onCreateView里边初始化监听器

mScreenListener=new ScreenListener(this);mScreenListener.begin(new ScreenListener.ScreenStateListener() {    @Override    public void onUserPresent() {        DebugLog.i("onUserPresent");    }    @Override    public void onScreenOn() {        DebugLog.i("onScreenOn");    }    @Override    public void onScreenOff() {        DebugLog.i("onScreenOff");      ...    }});

注意监听的Activity或者Fragment销毁时，要取消监听广播事件

@Overridepublic void onDestroy(){    super.onDestroy();    DebugLog.i("onDestroy");    mScreenListener.unregisterListener();}

最后注意在AndroidManifest.xml里边注册权限

<uses-permission android:name="android.permission.RECEIVE_USER_PRESENT" />

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