IllegalStateException

[jerry9433]

java.lang.IllegalStateException: Surface has already been released.
at android.view.Surface.checkNotReleasedLocked(Surface.java:580)
at android.view.Surface.lockCanvas(Surface.java:322)
at android.view.SurfaceView$3.internalLockCanvas(SurfaceView.java:1169)
at android.view.SurfaceView$3.lockCanvas(SurfaceView.java:1129)
at moe.codeest.enviews.ENLoadingView.draw(ENLoadingView.java:174)
at moe.codeest.enviews.ENLoadingView.access$300(ENLoadingView.java:20)
at moe.codeest.enviews.ENLoadingView$2.run(ENLoadingView.java:147)
at java.lang.Thread.run(Thread.java:764)