Android：傳感器

Question

有沒有人可以告訴我Android傳感器中的SENSOR_DELAY_NORMAL,SENSOR_DELAY_GAME,SENSOR_DELAY_UI和SENSOR_DELAY_FASTEST之間有什麼區別。

開發人員應該在哪裏使用所有這些東西？用戶使用所有這些會有什麼感受？

Answer 1

INT SENSOR_DELAY_FASTEST獲得傳感器數據一樣快，適合遊戲 INT SENSOR_DELAY_NORMAL率（默認）適用於屏幕方向的變化是基於一些近似適合用戶界面

Answer 2

這裏 INT SENSOR_DELAY_UI率可能 INT SENSOR_DELAY_GAME率上測試的結果：

Accelerometer, SENSOR_DELAY_FASTEST: 18-20 ms 
Accelerometer, SENSOR_DELAY_GAME: 37-39 ms 
Accelerometer, SENSOR_DELAY_UI: 85-87 ms 
Accelerometer, SENSOR_DELAY_NORMAL: 215-230 ms 
Orientation Sensor, SENSOR_DELAY_FASTEST: 16-17 ms 
Orientation Sensor, SENSOR_DELAY_GAME: 37-39 ms 
Orientation Sensor, SENSOR_DELAY_UI: 77 ms 
Orientation Sensor, SENSOR_DELAY_NORMAL: 224-225 ms 

您也可以定義自己的速度，例如100ms。在我們

INT READINGRATE = 100000％時間 mSensorManager.registerListener（此，mLinearAccelerometer， READINGRATE）;

但是，速率只是一個近似值，如果您需要準確的速率，最好使用定時器。

Answer 3

閱讀本
http://developer.android.com/guide/topics/sensors/sensors_overview.html

SENSOR_DELAY_FASTEST 0微秒
SENSOR_DELAY_GAME 20000微秒
SENSOR_DELAY_UI 60000微秒
SENSOR_DELAY_NORMAL 200000微秒（200毫秒）

Answer 4

我的結果與設備：
榮譽4C Andro ID 5.1.1
的Xperia Z3的Android 6.0.1
爲Sensor.TYPE_ACCELEROMETER

Approximate values: 

For samplingPeriodUs: 0ms: 
Honor: 4-12ms, long time(1min) 10ms 
Xperia: 1-5ms, long time(1min) 3ms 

For samplingPeriodUs: 30ms: 
Honor: 4-12ms, long time(1min) 7ms 
Xperia: 7-21ms, long time(1min) 20ms 

For samplingPeriodUs: SensorManager.SENSOR_DELAY_NORMAL: 
Many tests from internet: Accelerometer, SENSOR_DELAY_NORMAL: 215-230 ms 
Honor: 4-11ms, long time(1min) 10ms 
Xperia: 6-114ms, long time(1min) 14ms 

Omitted:SENSOR_DELAY_GAME, SENSOR_DELAY_UI 

For samplingPeriodUs: SensorManager.SENSOR_DELAY_FASTEST: 
Many tests from internet: Accelerometer, SENSOR_DELAY_FASTEST: 18-20 ms 
Honor: 3-12ms, long time(1min) 8ms 
Xperia: 1-5ms, long time(1min) 5ms