错误：DisplayListCanvas.throwIfCannotDraw 处的 RuntimeException

Question

我的应用程序在牛轧糖模拟器和许多设备上运行良好，但我在 google play 崩溃报告器中发现了这个异常，我不知道为什么会发生，该异常仅在牛轧糖设备 ++ 上引起。

例外：

   java.lang.RuntimeException: 
  at android.view.DisplayListCanvas.throwIfCannotDraw(DisplayListCanvas.java:260)
  at android.graphics.Canvas.drawBitmap(Canvas.java:1420)
  at android.graphics.drawable.BitmapDrawable.draw(BitmapDrawable.java:545)
  at android.view.View.getDrawableRenderNode(View.java:18591)
  at android.view.View.drawBackground(View.java:18527)
  at android.view.View.draw(View.java:18315)
  at android.view.View.updateDisplayListIfDirty(View.java:17302)
  at android.view.View.draw(View.java:18086)
  at android.view.ViewGroup.drawChild(ViewGroup.java:3966)
  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3752)
  at android.view.View.updateDisplayListIfDirty(View.java:17297)
  at android.view.View.draw(View.java:18086)
  at android.view.ViewGroup.drawChild(ViewGroup.java:3966)
  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3752)
  at android.view.View.updateDisplayListIfDirty(View.java:17297)
  at android.view.View.draw(View.java:18086)
  at android.view.ViewGroup.drawChild(ViewGroup.java:3966)
  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3752)
  at android.view.View.updateDisplayListIfDirty(View.java:17297)
  at android.view.View.draw(View.java:18086)
  at android.view.ViewGroup.drawChild(ViewGroup.java:3966)
  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3752)
  at android.view.View.updateDisplayListIfDirty(View.java:17297)
  at android.view.View.draw(View.java:18086)
  at android.view.ViewGroup.drawChild(ViewGroup.java:3966)
  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3752)
  at android.view.View.draw(View.java:18327)
  at com.android.internal.policy.DecorView.draw(DecorView.java:919)
  at android.view.View.updateDisplayListIfDirty(View.java:17302)
  at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:692)
  at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:698)
  at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:806)
  at android.view.ViewRootImpl.draw(ViewRootImpl.java:3135)
  at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2931)
  at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2523)
  at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1522)
  at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7098)
  at android.view.Choreographer$CallbackRecord.run(Choreographer.java:927)
  at android.view.Choreographer.doCallbacks(Choreographer.java:702)
  at android.view.Choreographer.doFrame(Choreographer.java:638)
  at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:913)
  at android.os.Handler.handleCallback(Handler.java:751)
  at android.os.Handler.dispatchMessage(Handler.java:95)
  at android.os.Looper.loop(Looper.java:154)
  at android.app.ActivityThread.main(ActivityThread.java:6682)
  at java.lang.reflect.Method.invoke(Native Method:0)
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520)
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)

这个错误可能是什么？

注意：我使用的所有可绘制对象都小于 1MB。

Answer 1

Samsung Galaxy S6 S7 S8 遇到了完全相同的问题。就我而言，Splash Screen 具有高分辨率，并且被错误地放置在可绘制文件夹中。我从this 答案中找到了解决方案。

1. 右键单击drawable -> New -> Directory。
2. 输入新目录名称：xxhdpi。如果您转到res，它将创建一个名为drawable-xxhdpi 的新文件夹
3. 将您的初始图像从drawable 移动到drawable-xxhdpi。

Answer 2

在我的情况下，只需调整您的图像大小，我的启动画面图像尺寸是 1544x2100，所以我更改为 1080x2100，这样就可以了！ 希望这会有所帮助！！！ 谢谢！！！

Answer 3

尝试在android.view.DisplayListCanvas.throwIfCannotDraw 中设置一个调试点并检查哪个图像抛出异常。其中一些是不正确的 - 例如，尺寸过大或图像过多且无法记录到画布池。

Answer 4

 private static final int MAX_BITMAP_SIZE = 100 * 1024 * 1024; // 100 MB

    @Override
    protected void throwIfCannotDraw(Bitmap bitmap) {
        super.throwIfCannotDraw(bitmap);
        int bitmapSize = bitmap.getByteCount();
        if (bitmapSize > MAX_BITMAP_SIZE) {
            throw new RuntimeException(
                    "Canvas: trying to draw too large(" + bitmapSize + "bytes) bitmap.");
        }
    }

在DisplayListCanvas中查看此代码，否则查看View#draw()方法，

boolean draw(Canvas canvas, ViewGroup parent, long drawingTime) {
    boolean drawingWithRenderNode = mAttachInfo != null
                && mAttachInfo.mHardwareAccelerated
                && hardwareAcceleratedCanvas;
    ···
    if (drawingWithRenderNode) {
        // Delay getting the display list until animation-driven alpha values are
        // set up and possibly passed on to the view
        renderNode = updateDisplayListIfDirty();
        if (!renderNode.isValid()) {
            // Uncommon, but possible. If a view is removed from the hierarchy during the call
            // to getDisplayList(), the display list will be marked invalid and we should not
            // try to use it again.
            renderNode = null;
            drawingWithRenderNode = false;
            }
        }
    ···
}

这就是为什么我们可以通过取消硬件加速来解决问题