我有一个图像库应用程序,我正在尝试从外部存储获取图像.我的应用程序可以在
Android模拟器上运行,但在真实设备(HTC OneX)上我有一些例外.
我的Log cat在这里.
07-25 17:17:49.027: E/dalvikvm-heap(3008): Out of memory on a 480016-byte allocation. 07-25 17:17:49.052: E/dalvikvm(3008): Out of memory: Heap Size=65571KB,Allocated=63717KB,Limit=65536KB 07-25 17:17:49.052: E/dalvikvm(3008): Extra info: Footprint=65315KB,Allowed Footprint=65571KB,Trimmed=0KB 07-25 17:17:49.052: E/MediaStore(3008): Failed to allocate memory for thumbnail content://media/external/images/thumbnails/300; java.lang.OutOfMemoryError: (Heap Size=65571KB,Allocated=63717KB) 07-25 17:17:49.142: E/dalvikvm-heap(3008): Out of memory on a 480016-byte allocation. 07-25 17:17:49.152: E/dalvikvm(3008): Out of memory: Heap Size=65571KB,Allocated=63718KB,Limit=65536KB 07-25 17:17:49.152: E/dalvikvm(3008): Extra info: Footprint=65315KB,Trimmed=0KB 07-25 17:17:49.152: E/MediaStore(3008): Failed to allocate memory for thumbnail content://media/external/images/thumbnails/300; java.lang.OutOfMemoryError: (Heap Size=65571KB,Allocated=63718KB) 07-25 17:17:49.302: E/dalvikvm-heap(3008): Out of memory on a 480016-byte allocation. 07-25 17:17:49.317: E/dalvikvm(3008): Out of memory: Heap Size=65571KB,Allocated=63749KB,Limit=65536KB 07-25 17:17:49.317: E/dalvikvm(3008): Extra info: Footprint=65315KB,Trimmed=0KB 07-25 17:17:49.327: E/AndroidRuntime(3008): FATAL EXCEPTION: AsyncTask #1 07-25 17:17:49.327: E/AndroidRuntime(3008): java.lang.RuntimeException: An error occured while executing doInBackground() 07-25 17:17:49.327: E/AndroidRuntime(3008): at android.os.AsyncTask$3.done(AsyncTask.java:299) 07-25 17:17:49.327: E/AndroidRuntime(3008): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273) 07-25 17:17:49.327: E/AndroidRuntime(3008): at java.util.concurrent.FutureTask.setException(FutureTask.java:124) 07-25 17:17:49.327: E/AndroidRuntime(3008): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307) 07-25 17:17:49.327: E/AndroidRuntime(3008): at java.util.concurrent.FutureTask.run(FutureTask.java:137) 07-25 17:17:49.327: E/AndroidRuntime(3008): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 07-25 17:17:49.327: E/AndroidRuntime(3008): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) 07-25 17:17:49.327: E/AndroidRuntime(3008): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) 07-25 17:17:49.327: E/AndroidRuntime(3008): at java.lang.Thread.run(Thread.java:864) 07-25 17:17:49.327: E/AndroidRuntime(3008): Caused by: java.lang.OutOfMemoryError: (Heap Size=65571KB,Allocated=63749KB) 07-25 17:17:49.327: E/AndroidRuntime(3008): at android.graphics.BitmapFactory.nativeDecodeByteArray(Native Method) 07-25 17:17:49.327: E/AndroidRuntime(3008): at android.graphics.BitmapFactory.decodeByteArray(BitmapFactory.java:552) 07-25 17:17:49.327: E/AndroidRuntime(3008): at android.media.ThumbnailUtils.createThumbnailFromEXIF(ThumbnailUtils.java:515) 07-25 17:17:49.327: E/AndroidRuntime(3008): at android.media.ThumbnailUtils.createImageThumbnail(ThumbnailUtils.java:102) 07-25 17:17:49.327: E/AndroidRuntime(3008): at android.provider.MediaStore$InternalThumbnails.getThumbnail(MediaStore.java:626) 07-25 17:17:49.327: E/AndroidRuntime(3008): at android.provider.MediaStore$Images$Thumbnails.getThumbnail(MediaStore.java:987) 07-25 17:17:49.327: E/AndroidRuntime(3008): at com.mimi.ngsbusproject.GalleryActivity.Gallery(GalleryActivity.java:92) 07-25 17:17:49.327: E/AndroidRuntime(3008): at com.mimi.ngsbusproject.GalleryActivity.access$1(GalleryActivity.java:74) 07-25 17:17:49.327: E/AndroidRuntime(3008): at com.mimi.ngsbusproject.GalleryActivity$LoadGallery.doInBackground(GalleryActivity.java:58) 07-25 17:17:49.327: E/AndroidRuntime(3008): at com.mimi.ngsbusproject.GalleryActivity$LoadGallery.doInBackground(GalleryActivity.java:1) 07-25 17:17:49.327: E/AndroidRuntime(3008): at android.os.AsyncTask$2.call(AsyncTask.java:287) 07-25 17:17:49.327: E/AndroidRuntime(3008): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) 07-25 17:17:49.327: E/AndroidRuntime(3008): ... 5 more 07-25 17:17:50.062: E/WindowManager(3008): Activity com.mimi.ngsbusproject.GalleryActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@41ac90a8 that was originally added here 07-25 17:17:50.062: E/WindowManager(3008): android.view.WindowLeaked: Activity com.mimi.ngsbusproject.GalleryActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@41ac90a8 that was originally added here 07-25 17:17:50.062: E/WindowManager(3008): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:465) 07-25 17:17:50.062: E/WindowManager(3008): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:419) 07-25 17:17:50.062: E/WindowManager(3008): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:351) 07-25 17:17:50.062: E/WindowManager(3008): at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:171) 07-25 17:17:50.062: E/WindowManager(3008): at android.view.Window$LocalWindowManager.addView(Window.java:558) 07-25 17:17:50.062: E/WindowManager(3008): at android.app.Dialog.show(Dialog.java:282) 07-25 17:17:50.062: E/WindowManager(3008): at android.app.ProgressDialog.show(ProgressDialog.java:116) 07-25 17:17:50.062: E/WindowManager(3008): at android.app.ProgressDialog.show(ProgressDialog.java:99) 07-25 17:17:50.062: E/WindowManager(3008): at com.mimi.ngsbusproject.GalleryActivity$LoadGallery.onPreExecute(GalleryActivity.java:51) 07-25 17:17:50.062: E/WindowManager(3008): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586) 07-25 17:17:50.062: E/WindowManager(3008): at android.os.AsyncTask.execute(AsyncTask.java:534) 07-25 17:17:50.062: E/WindowManager(3008): at com.mimi.ngsbusproject.GalleryActivity.onCreate(GalleryActivity.java:43) 07-25 17:17:50.062: E/WindowManager(3008): at android.app.Activity.performCreate(Activity.java:5066) 07-25 17:17:50.062: E/WindowManager(3008): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1101) 07-25 17:17:50.062: E/WindowManager(3008): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2307) 07-25 17:17:50.062: E/WindowManager(3008): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) 07-25 17:17:50.062: E/WindowManager(3008): at android.app.ActivityThread.access$600(ActivityThread.java:151) 07-25 17:17:50.062: E/WindowManager(3008): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1331) 07-25 17:17:50.062: E/WindowManager(3008): at android.os.Handler.dispatchMessage(Handler.java:99) 07-25 17:17:50.062: E/WindowManager(3008): at android.os.Looper.loop(Looper.java:155) 07-25 17:17:50.062: E/WindowManager(3008): at android.app.ActivityThread.main(ActivityThread.java:5485) 07-25 17:17:50.062: E/WindowManager(3008): at java.lang.reflect.Method.invokeNative(Native Method) 07-25 17:17:50.062: E/WindowManager(3008): at java.lang.reflect.Method.invoke(Method.java:511) 07-25 17:17:50.062: E/WindowManager(3008): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028) 07-25 17:17:50.062: E/WindowManager(3008): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:795) 07-25 17:17:50.062: E/WindowManager(3008): at dalvik.system.NativeStart.main(Native Method) 07-25 17:17:50.962: E/dalvikvm-heap(3008): Out of memory on a 2264368-byte allocation. 07-25 17:17:50.967: E/dalvikvm(3008): Out of memory: Heap Size=65571KB,Allocated=63787KB,Limit=65536KB 07-25 17:17:50.967: E/dalvikvm(3008): Extra info: Footprint=65315KB,Trimmed=0KB 07-25 17:17:50.967: E/AndroidRuntime_2_crash(3008): crash in the same process: main 07-25 17:17:50.967: E/AndroidRuntime_2_crash(3008): java.lang.OutOfMemoryError: (Heap Size=65571KB,Allocated=63787KB) 07-25 17:17:50.967: E/AndroidRuntime_2_crash(3008): at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method) 07-25 17:17:50.967: E/AndroidRuntime_2_crash(3008): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:626) 07-25 17:17:50.967: E/AndroidRuntime_2_crash(3008): at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:473) 07-25 17:17:50.967: E/AndroidRuntime_2_crash(3008): at android.graphics.BitmapFactory.decodeResource(BitmapFactory.java:502) 07-25 17:17:50.967: E/AndroidRuntime_2_crash(3008): at com.mimi.ngsbusproject.LuancherActivity.decodeSampledBitmapFromResource(LuancherActivity.java:147) 07-25 17:17:50.967: E/AndroidRuntime_2_crash(3008): at com.mimi.ngsbusproject.LuancherActivity.AnimateandSlideShow(LuancherActivity.java:113) 07-25 17:17:50.967: E/AndroidRuntime_2_crash(3008): at com.mimi.ngsbusproject.LuancherActivity.access$0(LuancherActivity.java:106) 07-25 17:17:50.967: E/AndroidRuntime_2_crash(3008): at com.mimi.ngsbusproject.LuancherActivity$2.run(LuancherActivity.java:84)
我的代码在这里.
final String[] columns = { MediaStore.Images.Media.DATA,MediaStore.Images.Media._ID };
Cursor image_cursor;
image_cursor = managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,columns,null,null);
int image_column_index = image_cursor
.getColumnIndex(MediaStore.Images.Media._ID);
count = image_cursor.getCount();
thumbnails = new Bitmap[count];
arrPath = new String[count];
try {
for (int i = 0; i < count; i++) {
image_cursor.moveToPosition(i);
int id = image_cursor.getInt(image_column_index);
int dataColumnIndex = image_cursor
.getColumnIndex(MediaStore.Images.Media.DATA);
thumbnails[i] = MediaStore.Images.Thumbnails.getThumbnail(
getApplicationContext().getContentResolver(),id,MediaStore.Images.Thumbnails.MINI_KIND,null);
arrPath[i] = image_cursor.getString(dataColumnIndex);
}
} catch (Exception e) {
e.printStackTrace();
}
抱歉我的语言.谢谢.
解决方法
你的部分：
count = image_cursor.getCount(); thumbnails = new Bitmap[count];
可能导致这个.要创建位图内存效率,您应该使用BitmapOptions
试试这个：
Bitmap bm; bm = Bitmap.createScaledBitmap(BitmapFactory.decodeFile(filepath),100,true); mPicture = new ImageView(context); mPicture.setImageBitmap(bm);
看到
Strange out of memory issue while loading an image to a Bitmap object
看起来这两个日志可能会给你提示：
Failed to allocate memory for thumbnail
content://media/external/images/thumbnails/300;
.
android.graphics.BitmapFactory.nativeDecodeByteArray(Native Method)
07-25 17:17:49.327: E/AndroidRuntime(3008): at
android.graphics.BitmapFactory.decodeByteArray(BitmapFactory.java:552)
07-25 17:17:49.327: E/AndroidRuntime(3008): at
android.media.ThumbnailUtils.createThumbnailFromEXIF
你的画廊是否包含很多大图片？
在这种情况下,您的Cursor没有问题,但在位图方面您的内存管理问题！
此外,您应该在清单中拥有此权限：
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
也可以看看
http://developer.android.com/training/displaying-bitmaps/load-bitmap.html
