IllegalStateException calling MediaPlayer.reset()

android media-player
skyler picture skyler · Jul 6, 2011 · Viewed 16.1k times · Source

The documentation for the Android MediaPlayer shows that there are no invalid states for the reset() call: http://developer.android.com/reference/android/media/MediaPlayer.html#Valid_and_Invalid_States (the invalid states are listed as {}, or "none.").

However, I have seen an IllegalStateException thrown while calling reset():

java.lang.IllegalStateException
at android.media.MediaPlayer._reset(Native Method)
at android.media.MediaPlayer.reset(MediaPlayer.java:1061)
at com.example.android.player.AsyncPlayer$AsyncHandler.handleMessage(AsyncPlayer.java:654)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.os.HandlerThread.run(HandlerThread.java:60)

Is the documentation incorrect?

Answer

denizmveli picture denizmveli · Jan 7, 2012

Hard to say without seeing your code but I think you may be calling reset() after you call release() ?

The documentation states

When a MediaPlayer object is just created using new or after reset() is called, it is in the Idle state; and after release() is called, it is in the End state. Between these two states is the life cycle of the MediaPlayer object.

You may be calling reset outside of the valid life cycle.

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