Why TYPE_ORIENTATION is deprecated?

[Victor Surfer]

I find the TYPE_ORIENTATIN is deprecated in SDK2.3.4,

 

 

public static final int TYPE_ORIENTATION

Since: API Level 3

This constant is deprecated.
use SensorManager.getOrientation() instead.

 

 

 

 

Why it is deprecated? Does orientation be got still through orientation sensor?

 

 

Thanks,

Victor

 

 

[Chinmay V S]

The earlier method to query orientation was full of pitfalls for the app-developer. Hence, SENSOR_TYPE_ORIENTATION has been deprecated in favour of android.view.Display.getRotation()

Here's why:
http://android-developers.blogspot.com/2010/09/one-screen-turn-deserves-another.html

[Chinmay V S]

Also to get the exact values of azimuth, pitch and roll use SensorManager.getOrientation() instead. The SensorManager.getOrientation() method requires a rotation-matrix to transform the values properly.

[Victor Surfer]

Hi Chinmay,

Thanks for your kindly pointer.
Does orientation be got through accelerometer or orientation sensor or others?

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[Chinmay V S]

Usually there is no "orientation-sensor" hardware.
A combination of accelerometer(for pitch, roll) & compass (for azimuth)
is presented as orientation to the framework by the sensor-HAL.

A quick overview of sensors:
http://thecodeartist.blogspot.com/2010/12/sensors-on-android-gingerbread.html

- CVS