主页 / 问题 / 730847
Accepted
Umy
Asked:2020-10-15 00:42:38 +0000 UTC2020-10-15 00:42:38 +0000 UTC

是什么导致异常？

  • 772
E: FATAL EXCEPTION: main
   Process: *, PID: 22482
   java.lang.RuntimeException: Canvas: trying to use a recycled bitmap android.graphics.Bitmap@24e46ab
       at android.graphics.Canvas.throwIfCannotDraw(Canvas.java:1280)
       at android.view.DisplayListCanvas.throwIfCannotDraw(DisplayListCanvas.java:257)
       at android.graphics.Canvas.drawBitmap(Canvas.java:1424)
       at android.graphics.drawable.BitmapDrawable.draw(BitmapDrawable.java:528)
       at android.widget.ImageView.onDraw(ImageView.java:1316)
       at android.view.View.draw(View.java:17293)
       at android.view.View.updateDisplayListIfDirty(View.java:16275)
       at android.view.View.draw(View.java:17059)
       at android.view.ViewGroup.drawChild(ViewGroup.java:3731)
       at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3517)
       at android.view.View.updateDisplayListIfDirty(View.java:16270)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3715)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3695)
       at android.view.View.updateDisplayListIfDirty(View.java:16238)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3715)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3695)
       at android.view.View.updateDisplayListIfDirty(View.java:16238)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3715)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3695)
       at android.view.View.updateDisplayListIfDirty(View.java:16238)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3715)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3695)
       at android.view.View.updateDisplayListIfDirty(View.java:16238)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3715)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3695)
       at android.view.View.updateDisplayListIfDirty(View.java:16238)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3715)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3695)
       at android.view.View.updateDisplayListIfDirty(View.java:16238)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3715)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3695)
       at android.view.View.updateDisplayListIfDirty(View.java:16238)
       at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:652)
       at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:658)
       at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:766)
       at android.view.ViewRootImpl.draw(ViewRootImpl.java:2834)
       at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2642)
       at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2249)
       at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1280)
       at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6432)
       at android.view.Choreographer$CallbackRecord.run(Choreographer.java:874)
       at android.view.Choreographer.doCallbacks(Choreographer.java:686)
       at android.view.Choreographer.doFrame(Choreographer.java:621)
       at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:860)
       at android.os.Handler.handleCallback(Handler.java:751)
       at android.os.Handler.dispatchMessage(Handler.java:95)
       at android.os.Looper.loop(Looper.java:154)
       at android.app.ActivityThread.main(ActivityThread.java:6374)
       at java.lang.reflect.Method.invoke(Native Method)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
D: App Event: crash

应用程序崩溃，但如何理解导致它崩溃的原因和位置？我用调试器查看，但那里的一切都大致相同，我的应用程序没有单一方法 - 只有标准方法。

java

1 个回答

  1. Best Answer

    叫他bitmap.recycle()。快速的解决方案是不调用bitmap.recycle();，这对于android >2.3.3不是严格要求的。如果您无论如何都想释放该内存，则需要找到一种方法来检查何时真正不再需要位图（即 Canvas 有机会完成其绘图操作）。

    https://stackoverflow.com/a/31227624/4854931

    if (mBitmap != null && !mBitmap.isRecycled()) {
    mBitmap.recycle();
    mBitmap = null; 
}

    https://stackoverflow.com/a/22129476/4854931

    • 1

相关问题