Question

我有一个包含12个ImageView的Activity。在onCreate方法中，我使用 BitmapFactory.decodeStream（...）在这些ImageViews中加载了12张照片。

当我来到这个页面并返回10次时，我得到以下Out of Memory Exception。

为什么我会收到此错误，如何释放资源以防止此异常？

谢谢，

04-24 14:41:00.050: D/TextView(7586): Constructor - Got appearance for textColorPrimaryInverse
04-24 14:41:00.050: D/TextView(7586): Constructor -- Got mEditTextBackgroundColor
04-24 14:41:00.130: I/dalvikvm-heap(7586): Clamp target GC heap from 48.878MB to 48.000MB
04-24 14:41:00.130: D/dalvikvm(7586): GC_FOR_ALLOC freed 495K, 2% free 47950K/48775K, paused 44ms
04-24 14:41:00.130: I/dalvikvm-heap(7586): Forcing collection of SoftReferences for 404616-byte allocation
04-24 14:41:00.180: I/dalvikvm-heap(7586): Clamp target GC heap from 48.856MB to 48.000MB
04-24 14:41:00.180: D/dalvikvm(7586): GC_BEFORE_OOM freed 23K, 2% free 47926K/48775K, paused 48ms
04-24 14:41:00.180: E/dalvikvm-heap(7586): Out of memory on a 404616-byte allocation.
04-24 14:41:00.180: I/dalvikvm(7586): "main" prio=5 tid=1 RUNNABLE
04-24 14:41:00.180: I/dalvikvm(7586):   | group="main" sCount=0 dsCount=0 obj=0x40a54460 self=0x1ad5828
04-24 14:41:00.180: I/dalvikvm(7586):   | sysTid=7586 nice=0 sched=0/0 cgrp=default handle=1074742408
04-24 14:41:00.180: I/dalvikvm(7586):   | schedstat=( 14073874000 2242143000 19299 ) utm=1301 stm=106 core=1
04-24 14:41:00.180: I/dalvikvm(7586):   at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
04-24 14:41:00.180: I/dalvikvm(7586):   at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:493)
04-24 14:41:00.180: I/dalvikvm(7586):   at org.mabna.order.utils.Utilities.decodeFile(Utilities.java:1220)
04-24 14:41:00.180: I/dalvikvm(7586):   at org.mabna.order.businessLayer.db.BoInvProducts.getProductPhoto(BoInvProducts.java:107)
04-24 14:41:00.180: I/dalvikvm(7586):   at org.mabna.order.ui.ActProductsGallery.loadPageImages(ActProductsGallery.java:729)
04-24 14:41:00.180: I/dalvikvm(7586):   at org.mabna.order.ui.ActProductsGallery.selectItemInGallery(ActProductsGallery.java:611)
04-24 14:41:00.180: I/dalvikvm(7586):   at org.mabna.order.ui.ActProductsGallery.onCreate(ActProductsGallery.java:315)
04-24 14:41:00.180: I/dalvikvm(7586):   at android.app.Activity.performCreate(Activity.java:4465)
04-24 14:41:00.180: I/dalvikvm(7586):   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
04-24 14:41:00.180: I/dalvikvm(7586):   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
04-24 14:41:00.180: I/dalvikvm(7586):   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
04-24 14:41:00.180: I/dalvikvm(7586):   at android.app.ActivityThread.access$600(ActivityThread.java:123)
04-24 14:41:00.180: I/dalvikvm(7586):   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
04-24 14:41:00.180: I/dalvikvm(7586):   at android.os.Handler.dispatchMessage(Handler.java:99)
04-24 14:41:00.180: I/dalvikvm(7586):   at android.os.Looper.loop(Looper.java:137)
04-24 14:41:00.180: I/dalvikvm(7586):   at android.app.ActivityThread.main(ActivityThread.java:4424)
04-24 14:41:00.180: I/dalvikvm(7586):   at java.lang.reflect.Method.invokeNative(Native Method)
04-24 14:41:00.180: I/dalvikvm(7586):   at java.lang.reflect.Method.invoke(Method.java:511)
04-24 14:41:00.180: I/dalvikvm(7586):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
04-24 14:41:00.180: I/dalvikvm(7586):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
04-24 14:41:00.180: I/dalvikvm(7586):   at dalvik.system.NativeStart.main(Native Method)
04-24 14:41:00.180: D/skia(7586): --- decoder->decode returned false
04-24 14:41:00.180: D/AndroidRuntime(7586): Shutting down VM
04-24 14:41:00.180: W/dalvikvm(7586): threadid=1: thread exiting with uncaught exception (group=0x40a531f8)
04-24 14:41:00.180: E/AndroidRuntime(7586): FATAL EXCEPTION: main
04-24 14:41:00.180: E/AndroidRuntime(7586): java.lang.OutOfMemoryError
04-24 14:41:00.180: E/AndroidRuntime(7586):     at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:493)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at org.mabna.order.utils.Utilities.decodeFile(Utilities.java:1220)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at org.mabna.order.businessLayer.db.BoInvProducts.getProductPhoto(BoInvProducts.java:107)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at org.mabna.order.ui.ActProductsGallery.loadPageImages(ActProductsGallery.java:729)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at org.mabna.order.ui.ActProductsGallery.selectItemInGallery(ActProductsGallery.java:611)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at org.mabna.order.ui.ActProductsGallery.onCreate(ActProductsGallery.java:315)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at android.app.Activity.performCreate(Activity.java:4465)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at android.app.ActivityThread.access$600(ActivityThread.java:123)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at android.os.Handler.dispatchMessage(Handler.java:99)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at android.os.Looper.loop(Looper.java:137)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at android.app.ActivityThread.main(ActivityThread.java:4424)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at java.lang.reflect.Method.invokeNative(Native Method)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at java.lang.reflect.Method.invoke(Method.java:511)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
04-24 14:41:00.180: E/AndroidRuntime(7586):     at dalvik.system.NativeStart.main(Native Method)
04-24 14:41:01.350: I/Process(7586): Sending signal. PID: 7586 SIG: 9

Answer 1

或许，使用距您ImageViews最近的尺码解码图片（请参阅：Strange out of memory issue while loading an image to a Bitmap object）

Answer 2

听起来你正在以错误的方式切换活动并保持内存中的许多实例。您可以尝试在打开此活动的意图上设置FLAG_ACTIVITY_CLEAR_TOP，或者查看Activity life cycle以确定应该在何处加载图像。

Answer 3

您是否尝试过以下操作？

回收像这样的位图

@Override
public void onDestroy() {
super.onDestroy();
for (int i = 0; i < 5; i++) {
    TermElement e = theFiveGaugesInclRPMInPos4[i];
    e.background.recycle();
    e.background = null;
}
if (DEBUG)
    Log.i(this.getClass().getSimpleName(), " <<-"
        + Thread.currentThread().getStackTrace()[2].getMethodName());
}

重用位图我把它定义为静态，只是像这样初始化：

  if (faceTexture == null)
    faceTexture = BitmapFactory.decodeResource(getContext()
        .getResources(), faceTextureID);

使用DDMS检查内存使用情况

现在它不再崩溃了。

抱歉格式化 - 它只是不让我正确格式化代码 - 必须重启？： - （

内存不足致命异常

3 个答案: