Android 安卓应用程序崩溃之谜

我已经创建了一个Android应用程序，可以在我的设备上完美运行。我已经将APK发送给某人，并且它也在他的设备上工作

有一次，他想修改应用程序中的某些内容。所以我把完整的源代码发给他

现在他告诉我源代码不适合他。它可以很好地编译，但是当它从Eclipse中运行它时，它会崩溃

我100%确信我已经给他发送了正确的代码，这对我来说很好。显然，这次坠机没有任何原因

我让他把logcat错误发给我，但我似乎没有发现问题

这是它的一部分：

05-06 08:56:10.954: D/dalvikvm(266): GC_FOR_ALLOC freed 2720K, 13% free 27384K/31239K, paused 40ms, total 42ms
05-06 08:56:11.224: D/dalvikvm(266): GC_FOR_ALLOC freed 4048K, 21% free 24747K/31239K, paused 35ms, total 37ms
05-06 08:56:11.224: I/dalvikvm-heap(266): Forcing collection of SoftReferences for 3785616-byte allocation
05-06 08:56:11.284: D/dalvikvm(266): GC_BEFORE_OOM freed 31K, 21% free 24715K/31239K, paused 54ms, total 54ms
05-06 08:56:11.284: E/dalvikvm-heap(266): Out of memory on a 3785616-byte allocation.
05-06 08:56:11.284: I/dalvikvm(266): "main" prio=5 tid=1 RUNNABLE
05-06 08:56:11.284: I/dalvikvm(266):   | group="main" sCount=0 dsCount=0 obj=0x2bc9b568 self=0x55569be0
05-06 08:56:11.284: I/dalvikvm(266):   | sysTid=266 nice=0 sched=0/0 cgrp=apps handle=716000068
05-06 08:56:11.284: I/dalvikvm(266):   | schedstat=( 4120000000 11950000000 1161 ) utm=335 stm=77 core=0
05-06 08:56:11.294: I/dalvikvm(266):   at android.graphics.Bitmap.nativeCreate(Native Method)
05-06 08:56:11.294: I/dalvikvm(266):   at android.graphics.Bitmap.createBitmap(Bitmap.java:640)
05-06 08:56:11.294: I/dalvikvm(266):   at android.graphics.Bitmap.createBitmap(Bitmap.java:620)
05-06 08:56:11.294: I/dalvikvm(266):   at com.android.launcher2.Cling.dispatchDraw(Cling.java:208)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.View.buildDrawingCache(View.java:12717)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.View.draw(View.java:13154)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.View.draw(View.java:13461)
05-06 08:56:11.294: I/dalvikvm(266):   at android.widget.FrameLayout.draw(FrameLayout.java:467)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.View.draw(View.java:13342)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2806)
05-06 08:56:11.294: I/dalvikvm(266):   at com.android.launcher2.DragLayer.dispatchDraw(DragLayer.java:743)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.View.draw(View.java:13461)
05-06 08:56:11.294: I/dalvikvm(266):   at android.widget.FrameLayout.draw(FrameLayout.java:467)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.View.draw(View.java:13342)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.View.draw(View.java:13340)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.View.draw(View.java:13340)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.View.draw(View.java:13461)
05-06 08:56:11.294: I/dalvikvm(266):   at android.widget.FrameLayout.draw(FrameLayout.java:467)
05-06 08:56:11.294: I/dalvikvm(266):   at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:2183)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewRootImpl.drawSoftware(ViewRootImpl.java:2258)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewRootImpl.draw(ViewRootImpl.java:2153)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2021)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1832)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4214)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.Choreographer.doCallbacks(Choreographer.java:555)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.Choreographer.doFrame(Choreographer.java:525)
05-06 08:56:11.294: I/dalvikvm(266):   at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
05-06 08:56:11.294: I/dalvikvm(266):   at android.os.Handler.handleCallback(Handler.java:615)
05-06 08:56:11.294: I/dalvikvm(266):   at android.os.Handler.dispatchMessage(Handler.java:92)
05-06 08:56:11.294: I/dalvikvm(266):   at android.os.Looper.loop(Looper.java:137)
05-06 08:56:11.294: I/dalvikvm(266):   at android.app.ActivityThread.main(ActivityThread.java:4745)
05-06 08:56:11.294: I/dalvikvm(266):   at java.lang.reflect.Method.invokeNative(Native Method)
05-06 08:56:11.294: I/dalvikvm(266):   at java.lang.reflect.Method.invoke(Method.java:511)
05-06 08:56:11.294: I/dalvikvm(266):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
05-06 08:56:11.294: I/dalvikvm(266):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
05-06 08:56:11.294: I/dalvikvm(266):   at dalvik.system.NativeStart.main(Native Method)
05-06 08:56:11.294: D/AndroidRuntime(266): Shutting down VM
05-06 08:56:11.294: W/dalvikvm(266): threadid=1: thread exiting with uncaught exception (group=0x2bc9a300)
05-06 08:56:11.334: E/AndroidRuntime(266): FATAL EXCEPTION: main
05-06 08:56:11.334: E/AndroidRuntime(266): java.lang.OutOfMemoryError
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.graphics.Bitmap.nativeCreate(Native Method)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.graphics.Bitmap.createBitmap(Bitmap.java:640)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.graphics.Bitmap.createBitmap(Bitmap.java:620)
05-06 08:56:11.334: E/AndroidRuntime(266):  at com.android.launcher2.Cling.dispatchDraw(Cling.java:208)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.View.buildDrawingCache(View.java:12717)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.View.draw(View.java:13154)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.View.draw(View.java:13461)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.widget.FrameLayout.draw(FrameLayout.java:467)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.View.draw(View.java:13342)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2806)
05-06 08:56:11.334: E/AndroidRuntime(266):  at com.android.launcher2.DragLayer.dispatchDraw(DragLayer.java:743)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.View.draw(View.java:13461)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.widget.FrameLayout.draw(FrameLayout.java:467)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.View.draw(View.java:13342)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.View.draw(View.java:13340)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.View.draw(View.java:13340)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.View.draw(View.java:13461)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.widget.FrameLayout.draw(FrameLayout.java:467)
05-06 08:56:11.334: E/AndroidRuntime(266):  at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:2183)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewRootImpl.drawSoftware(ViewRootImpl.java:2258)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewRootImpl.draw(ViewRootImpl.java:2153)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2021)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1832)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4214)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.Choreographer.doCallbacks(Choreographer.java:555)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.Choreographer.doFrame(Choreographer.java:525)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.os.Handler.handleCallback(Handler.java:615)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.os.Handler.dispatchMessage(Handler.java:92)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.os.Looper.loop(Looper.java:137)
05-06 08:56:11.334: E/AndroidRuntime(266):  at android.app.ActivityThread.main(ActivityThread.java:4745)
05-06 08:56:11.334: E/AndroidRuntime(266):  at java.lang.reflect.Method.invokeNative(Native Method)
05-06 08:56:11.334: E/AndroidRuntime(266):  at java.lang.reflect.Method.invoke(Method.java:511)
05-06 08:56:11.334: E/AndroidRuntime(266):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
05-06 08:56:11.334: E/AndroidRuntime(266):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
05-06 08:56:11.334: E/AndroidRuntime(266):  at dalvik.system.NativeStart.main(Native Method)
05-06 08:56:11.346: W/ActivityManager(152):   Force finishing activity com.android.launcher/com.android.launcher2.Launcher
05-06 08:56:11.449: E/libEGL(36): called unimplemented OpenGL ES API
05-06 08:56:11.449: E/libEGL(36): called unimplemented OpenGL ES API
05-06 08:56:11.449: E/libEGL(36): called unimplemented OpenGL ES API
05-06 08:56:11.449: E/libEGL(36): called unimplemented OpenGL ES API
05-06 08:56:11.449: E/libEGL(36): called unimplemented OpenGL ES API
05-06 08:56:11.449: E/libEGL(36): called unimplemented OpenGL ES API
05-06 08:56:11.449: E/libEGL(36): called unimplemented OpenGL ES API
05-06 08:56:11.449: E/libEGL(36): called unimplemented OpenGL ES API
05-06 08:56:11.449: E/libEGL(36): called unimplemented OpenGL ES API
05-06 08:56:11.449: E/libEGL(36): called unimplemented OpenGL ES API
05-06 08:56:11.449: W/WindowManager(152): Failure taking screenshot for (266x425) to layer 21005
05-06 08:56:11.954: W/ActivityManager(152): Activity pause timeout for ActivityRecord{2c584740 com.android.launcher/com.android.launcher2.Launcher}
05-06 08:56:11.954: I/ActivityManager(152): START {act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10000000 cmp=com.android.launcher/com.android.launcher2.Launcher u=0} from pid 0
05-06 08:56:22.035: W/ActivityManager(152): Activity idle timeout for ActivityRecord{2c57af08 com.android.launcher/com.android.launcher2.Launcher}

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你遇到的问题很常见：当你的应用程序试图为你正在使用的位图分配空间时，它的内存不足

有一些技术你可以在谷歌的Android程序员文档网站上找到。比如说

为了避免错误，这也是一个非常好的函数，来自Google docs：

public static int calculateInSampleSize(
            BitmapFactory.Options options, int reqWidth, int reqHeight) {
    // Raw height and width of image
    final int height = options.outHeight;
    final int width = options.outWidth;
    int inSampleSize = 1;

    if (height > reqHeight || width > reqWidth) {

        // Calculate ratios of height and width to requested height and width
        final int heightRatio = Math.round((float) height / (float) reqHeight);
        final int widthRatio = Math.round((float) width / (float) reqWidth);

        // Choose the smallest ratio as inSampleSize value, this will guarantee
        // a final image with both dimensions larger than or equal to the
        // requested height and width.
        inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
    }

    return inSampleSize;
}

 public static Bitmap decodeSampledBitmapFromResource(Resources res, int resId,
        int reqWidth, int reqHeight) {

    // First decode with inJustDecodeBounds=true to check dimensions
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeResource(res, resId, options);

    // Calculate inSampleSize
    options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

    // Decode bitmap with inSampleSize set
    options.inJustDecodeBounds = false;
    return BitmapFactory.decodeResource(res, resId, options);
}

它的作用是：

验证位图的高度和宽度，而不实际将其加载到内存中 调整采样大小，使其适合内存，但保持所需的尺寸 尝试将AVD中的VM堆内存增加为64

在菜单中选择 窗口=>Android虚拟设备管理器=>选择您使用的avd=>单击编辑按钮

在旧版本的ADT中

在新版本的ADT中

---

当您创建新的AVD时，默认情况下需要24个VM堆。但是您的应用程序需要更多内存，因此，您将其设置为64。

看起来位图占用了太多内存。他添加图像了吗？OutOfMemoryError…..问题是：我的原始源代码没有使用任何图像。他告诉我，他现在只是想编译我的源代码。这不是有点问题吗？我理解这个问题的方式是，它在实际设备上崩溃，并且您不能在实际设备上更改堆的参数，对吗？如果有什么不同的话，我建议他在AVD上配置一个与他朋友的设备具有相同特征的图像，这样他就可以看到他的应用程序在何处以及如何崩溃。