手机口袋模式功能

一.口袋模式定义

实际上很难判断手机是否处于口袋中，口袋场景太复杂，目前市场上口袋模式没有一个确定的定义，参考其它手机和自己做过产品。

定义：手机是处于竖立状态并且距离传感器是被遮挡。

实现原理：加速度传感器判断手机是否处于竖立状态，距离传感器判断是否被遮挡。

应用场景:1.来电铃声自动调到最大音，拿出口袋恢复之前声音大小。2.口袋模式下自动锁屏或灭屏，拿出口袋自动解锁或亮屏。。。可以根据产品定义功能。

下面代码是来电铃声自动调到最大音功能为例,该功能实在原生incallUi应用上实现,代码实现位置如下。

packages\apps\InCallUI\src\com\android\incallui\ProximitySensor.java

//变量声明 begin

private static final float CRITICAL_DOWN_ANGLE = - 8.0f ;

private static final float CRITICAL_UP_ANGLE = 8.0f ;

private static final int SPEED_SHRESHOLD = 800 ;

private SensorManager mSensorManager ;

private Sensor mGsensorAccelerometer ;//加速度传感器

private Sensor mGsensorProximity;//距离传感器

private int mReverseDownFlg = - 1 ;

private float lastX ;

private float lastY ;

private float lastZ ;

private static final int UPTATE_INTERVAL_TIME = 70 ;

private static final String POCKET_MODE = "pocket_mode_for_call";

float tMax = 1.0f ;

float tMaxleft = 0.1f ;

private long lastUpdateTime ;

SensorEventListener mySensorListener ;

boolean disInRang = false ;

int previousMuteMode = - 1 ;

boolean mActFlag = false ;

boolean isPocket = false;

float distance = 10; float MAXRANGDISTANCE =1.0f;

int previousRing = 0 ;

boolean isRing = false ;

AudioManager am ;

//变量声明 end

public ProximitySensor ( Context context , AudioModeProvider audioModeProvider ,

AccelerometerListener accelerometerListener ) {

mContext = context ;

mPowerManager = ( PowerManager ) context . getSystemService ( Context . POWER_SERVICE );

if ( mPowerManager . isWakeLockLevelSupported ( PowerManager . PROXIMITY_SCREEN_OFF_WAKE_LOCK )) {

mProximityWakeLock = mPowerManager . newWakeLock (

PowerManager . PROXIMITY_SCREEN_OFF_WAKE_LOCK , TAG );

} else {

Log . w ( TAG , "Device does not support proximity wake lock." );

mProximityWakeLock = null ;

}

mAccelerometerListener = accelerometerListener ;

mAccelerometerListener . setListener ( this );

mDisplayListener = new ProximityDisplayListener (

( DisplayManager ) context . getSystemService ( Context . DISPLAY_SERVICE ));

mDisplayListener . register ();

mAudioModeProvider = audioModeProvider ;

mAudioModeProvider . addListener ( this );

//变量初始化 begin

am = ( AudioManager ) mContext . getSystemService ( Context . AUDIO_SERVICE );

mSensorManager = ( SensorManager ) mContext . getSystemService ( Service . SENSOR_SERVICE );

mGsensorAccelerometer = mSensorManager . getDefaultSensor ( Sensor . TYPE_ACCELEROMETER ); //获取加速度传感器

mSensorManager . registerListener ( mGsensorListener , mGsensorAccelerometer , SensorManager . SENSOR_DELAY_NORMAL ); //注册传感器监听

mGsensorProximity = mSensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY);/获取距离传感器         mSensorManager.registerListener(mGsensorListener, mGsensorProximity, SensorManager.SENSOR_DELAY_NORMAL);//注册传感器监听

//变量初始化 end

}

//传感器监听

SensorEventListener mGsensorListener = new SensorEventListener () {

@Override

public void onAccuracyChanged ( Sensor sensor , int accuracy ) {

}

@Override

public void onSensorChanged ( SensorEvent event ) {

TelecomManager telecomManager = getTelecommService (); //获取telecom对象

if ( telecomManager != null && telecomManager . isRinging ()) { //判断当前是否响铃

sRing = true ;

} else { //电话状态不再是响铃状态

isRing = false ;

Log . d ( TAG , "telecomManager not ring " );

//响铃停止恢复之前铃声大小

if(mActFlag){

mActFlag = false; am.setRingerMode(previousMuteMode);             am.setStreamVolume(AudioManager.STREAM_RING,previousRing, AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE);

}

return ;

}

if(event.sensor.getType() == Sensor.TYPE_PROXIMITY){//如果是距离传感器         distance = event.values[0]; //获取值         Log.d( TAG, "distance "+distance);         return;         }

long currentUpdateTime = System . currentTimeMillis ();

long timeInterval = currentUpdateTime - lastUpdateTime ;

lastUpdateTime = currentUpdateTime ;

float x = event . values [ SensorManager . DATA_X ];

float y = event . values [ SensorManager . DATA_Y ];

float z = event . values [ SensorManager . DATA_Z ];

float deltaX = x - lastX ;

float deltaY = y - lastY ;

float deltaZ = z - lastZ ;

float absx = Math . abs ( x );

float absy = Math . abs ( y );

float absz = Math . abs ( z );

lastX = x ;

lastY = y ;

lastZ = z ;

double speed = Math . sqrt ( deltaX * deltaX + deltaY * deltaY + deltaZ * deltaZ )/ timeInterval * 10000 ;

if ( event . values [ SensorManager . DATA_Z ] >= CRITICAL_UP_ANGLE ){ //屏幕竖直朝上

mReverseDownFlg = 0 ;

} else if ( event . values [ SensorManager . DATA_Z ] <= CRITICAL_DOWN_ANGLE

&& mReverseDownFlg == 0 ){ //屏幕竖直朝下

mReverseDownFlg = 1 ;

}

if ( absx > absy && absx > absz ) {

if ( x > tMax ) {

isPocket = false;

Log . d ( TAG , "turn left" + " isLeftRight = " + isLeftRight ); //手机向左边翻转

} else if ( x < - tMax ){

isPocket = false;

Log . d ( TAG , "turn right" + " isLeftRight = " + isLeftRight ); //手机向右边翻转

}

} else if ( absy > absx && absy > absz ) {

if ( y > tMax ) {

isPocket = true;

Log . d ( TAG , "turn up" + " isLeftRight = " + isLeftRight ); //手机竖直翻转头向上

} else if ( y <- tMax ){

isPocket = true;

Log . d ( TAG , "turn down" + " isLeftRight = " + isLeftRight ); //手机竖直翻转头向下

}

} else if ( absz > absx && absz > absy ) {

if ( z > 0 ) {

isPocket = false;

Log . d ( TAG , "screen up" ); //手机屏幕向上

} else {

isPocket = false;

Log.d(TAG, "onSensorChanged set slince");//手机屏幕向下

}

Log . d ( TAG , "screen down" + " isLeftRight = " + isLeftRight );

}

} else {

Log . d ( TAG , "unknow action" + " isLeftRight = " + isLeftRight );

}

if(distance >= MAXRANGDISTANCE){ disInRang = false; }else{ disInRang = true;//距离传感器被遮挡 } if(Settings.System.getInt(mContext.getContentResolver(),POCKET_MODE, 1) == 1 && isRing){//开关打开并且响铃 if(disInRang && isPocket && !mActFlag){              mActFlag = true;              previousMuteMode = am.getRingerMode();              am.setRingerMode(AudioManager.RINGER_MODE_NORMAL);              previousRing = am.getStreamVolume(AudioManager.STREAM_RING );//获取铃声大小              am.setStreamVolume(AudioManager.STREAM_RING,am.getStreamMaxVolume(AudioManager.STREAM_RING), AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE);//设置为最大铃声              Log.d(TAG, "set max ring = "+am.getStreamMaxVolume(AudioManager.STREAM_RING)+" current ring = "+previousRing);

} }else if(!disInRang && mActFlag){ mActFlag = false; am.setRingerMode(previousMuteMode);//恢复之前铃声          am.setStreamVolume(AudioManager.STREAM_RING,previousRing, AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE);         Log.d(TAG, "set back current dddaf ring = "+previousRing); }else if(mActFlag){ mActFlag = false; am.setRingerMode(previousMuteMode);//恢复之前铃声          am.setStreamVolume(AudioManager.STREAM_RING,previousRing, AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE);          Log.d(TAG, "set back current thie swatch is close ring = "+previousRing); }

}

};

TelecomManager getTelecommService () {

if ( mContext != null )

return ( TelecomManager ) mContext . getSystemService ( Context . TELECOM_SERVICE );

return null ;

}

public void tearDown () {

mAudioModeProvider . removeListener ( this );

mAccelerometerListener . enable ( false );

mDisplayListener . unregister ();

turnOffProximitySensor ( true );

//取消注册监听加速度传感器

if ( mSensorManager != null ){

mSensorManager . unregisterListener ( mGsensorListener );

mSensorManager = null ;

}

}