2

A bitmap is captured and passed between Activity by declaring static.

For the first time, the images can be displayed. However, when the second Activity is destroyed and created again, the image cannot be shown. The error is:

04-30 12:55:28.988: W/dalvikvm(4034): threadid=1: thread exiting with uncaught exception (group=0x4001d5a0)
04-30 12:55:29.028: E/AndroidRuntime(4034): FATAL EXCEPTION: main
04-30 12:55:29.028: E/AndroidRuntime(4034): java.lang.RuntimeException: Canvas: trying to use a recycled bitmap android.graphics.Bitmap@40531360, 800x480
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.graphics.Canvas.throwIfRecycled(Canvas.java:973)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.graphics.Canvas.drawBitmap(Canvas.java:1062)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.graphics.drawable.BitmapDrawable.draw(BitmapDrawable.java:332)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.widget.ImageView.onDraw(ImageView.java:943)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.View.draw(View.java:7014)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewGroup.drawChild(ViewGroup.java:1732)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1466)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.View.draw(View.java:7126)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewGroup.drawChild(ViewGroup.java:1732)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1459)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewGroup.drawChild(ViewGroup.java:1730)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1459)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewGroup.drawChild(ViewGroup.java:1730)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1459)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewGroup.drawChild(ViewGroup.java:1730)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1459)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewGroup.drawChild(ViewGroup.java:1730)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1459)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.View.draw(View.java:7017)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.widget.FrameLayout.draw(FrameLayout.java:357)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:2054)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewRoot.draw(ViewRoot.java:1632)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewRoot.performTraversals(ViewRoot.java:1335)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1991)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.os.Handler.dispatchMessage(Handler.java:99)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.os.Looper.loop(Looper.java:150)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at android.app.ActivityThread.main(ActivityThread.java:4385)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at java.lang.reflect.Method.invokeNative(Native Method)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at java.lang.reflect.Method.invoke(Method.java:507)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607)
04-30 12:55:29.028: E/AndroidRuntime(4034):     at dalvik.system.NativeStart.main(Native Method)

thank you so much!

4

2 回答 2

0

不要使用静态变量传递它，此规则通常适用于在活动之间共享数据（不是最终的）。

相反，将其传递到意图包中：

intent.putExtra("a bitmap", myBitmap);

如果这是一个大图像，您可能希望将其存储到文件中并在意图中传递文件路径。

于 2012-04-30T09:20:45.827 回答
0

错误 -

尝试使用回收的位图

当您尝试访问回收的位图时会发生此错误。因此，可能是您正在使用bitmap.recycle();然后尝试使用相同的位图，这是不可能的，您不能再次使用回收的位图。最好从中创建一个新的位图或设法不回收位图。

于 2012-04-30T09:21:30.927 回答