Question

我已经开发了一个在Android 2.1版本上运行良好的应用程序但是当我在Android 4.0版本上启动它时它不会运行并抛出这样的堆栈跟踪：


09-26 19:45:10.961: E/AndroidRuntime(785): FATAL EXCEPTION: main
09-26 19:45:10.961: E/AndroidRuntime(785): java.lang.OutOfMemoryError
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.graphics.Bitmap.nativeCreate(Native Method)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.graphics.Bitmap.createBitmap(Bitmap.java:605)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.graphics.Bitmap.createBitmap(Bitmap.java:551)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.graphics.Bitmap.createScaledBitmap(Bitmap.java:437)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.graphics.BitmapFactory.finishDecode(BitmapFactory.java:524)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:499)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:351)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:773)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.content.res.Resources.loadDrawable(Resources.java:1937)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.content.res.Resources.getDrawable(Resources.java:664)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.widget.ImageView.resolveUri(ImageView.java:542)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.widget.ImageView.setImageResource(ImageView.java:315)
09-26 19:45:10.961: E/AndroidRuntime(785):  at com.deedatech.AnimalsNameForKids.AnimalsNameForKidsActivity.onCreate(AnimalsNameForKidsActivity.java:85)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.app.Activity.performCreate(Activity.java:4465)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1919)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1980)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.app.ActivityThread.access$600(ActivityThread.java:122)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1146)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.os.Handler.dispatchMessage(Handler.java:99)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.os.Looper.loop(Looper.java:137)
09-26 19:45:10.961: E/AndroidRuntime(785):  at android.app.ActivityThread.main(ActivityThread.java:4340)
09-26 19:45:10.961: E/AndroidRuntime(785):  at java.lang.reflect.Method.invokeNative(Native Method)
09-26 19:45:10.961: E/AndroidRuntime(785):  at java.lang.reflect.Method.invoke(Method.java:511)
09-26 19:45:10.961: E/AndroidRuntime(785):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
09-26 19:45:10.961: E/AndroidRuntime(785):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
09-26 19:45:10.961: E/AndroidRuntime(785):  at dalvik.system.NativeStart.main(Native   Method)

我只是不明白为什么会发生这种情况，因为同样的程序在Android 2.1版本上运行完美但在4.0版本上抛出outOfMemoryError。如果你有一些想法请帮忙..

Answer 1

如果要从UI线程解码位图，则存在获取outOfMemoryError的风险。尝试将解码流更改为asynTask。

Answer 2

与Anis所说的相反，在不同的线程上解码你的Bitmap不会帮助你避免内存不足（OOM）错误，你仍然在向你的应用程序加载完全相同数量的数据。

您需要缩小要加载的图像的大小，或者对其进行缩减采样，以便不加载所有数据，有关详细信息，请查看Loading Large Bitmaps Efficiently。

viewflipper不适用于4.0

2 个答案: