通用图像加载器:OutOfMemory 错误

Question

我正在使用 universal-image-loader-1.6.2.jar(最新的)。我正在尝试使用此库下载并缓存该图像。我要从服务器下载 47 张图片，总共 5.22 Mb。我的最大图片尺寸为 720X480，大小约为 143kb。运行良好直到 40-41 张图像之后出现错误

11-02 16:30:12.150: E/ImageLoader(31033): null
11-02 16:30:12.150: E/ImageLoader(31033): java.lang.OutOfMemoryError
11-02 16:30:12.150: E/ImageLoader(31033):   at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
11-02 16:30:12.150: E/ImageLoader(31033):   at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:493)
11-02 16:30:12.150: E/ImageLoader(31033):   at com.nostra13.universalimageloader.core.ImageDecoder.decode(ImageDecoder.java:83)
11-02 16:30:12.150: E/ImageLoader(31033):   at com.nostra13.universalimageloader.core.LoadAndDisplayImageTask.saveImageOnDisc(LoadAndDisplayImageTask.java:218)
11-02 16:30:12.150: E/ImageLoader(31033):   at com.nostra13.universalimageloader.core.LoadAndDisplayImageTask.tryLoadBitmap(LoadAndDisplayImageTask.java:138)
11-02 16:30:12.150: E/ImageLoader(31033):   at com.nostra13.universalimageloader.core.LoadAndDisplayImageTask.run(LoadAndDisplayImageTask.java:72)
11-02 16:30:12.150: E/ImageLoader(31033):   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:442)
11-02 16:30:12.150: E/ImageLoader(31033):   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
11-02 16:30:12.150: E/ImageLoader(31033):   at java.util.concurrent.FutureTask.run(FutureTask.java:137)
11-02 16:30:12.150: E/ImageLoader(31033):   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
11-02 16:30:12.150: E/ImageLoader(31033):   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
11-02 16:30:12.150: E/ImageLoader(31033):   at java.lang.Thread.run(Thread.java:856)
11-02 16:30:47.170: E/Adreno200-ES20(31033): <qgl2DrvAPI_glUseProgram:1318>: **** 31033: glUseProgram(3)
11-02 16:30:47.170: E/Adreno200-ES20(31033): <qgl2DrvAPI_glUseProgram:1318>: **** 31033: glUseProgram(6)

我在 git-hub 上看到并实现了关于 OOM 的建议。我跟着他们，但我仍然遇到错误。这是我的代码

if (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED))
        cacheDir=new File(android.os.Environment.getExternalStorageDirectory(),"neongall");
    else
        cacheDir=context.getCacheDir();
    if(!cacheDir.exists())
        cacheDir.mkdirs();

    ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context)
    .threadPoolSize(3)
    .threadPriority(Thread.NORM_PRIORITY - 1)
    .memoryCache(new WeakMemoryCache())
    .denyCacheImageMultipleSizesInMemory()
    .offOutOfMemoryHandling()
    .discCacheExtraOptions(720, 480, CompressFormat.JPEG, 75)
    .discCache(new UnlimitedDiscCache(cacheDir)) // You can pass your own disc cache implementation
    .discCacheFileNameGenerator(new HashCodeFileNameGenerator())
    .imageDownloader(new URLConnectionImageDownloader(120 * 1000, 120 * 1000)) // connectTimeout (5 s), readTimeout (20 s)
    .defaultDisplayImageOptions(DisplayImageOptions.createSimple())
    .enableLogging()
    .build();
    //Initialize ImageLoader with created configuration. Do it once on Application start.
    imageLoader.init(config);


    options = new DisplayImageOptions.Builder()
    .cacheOnDisc()
    .imageScaleType(ImageScaleType.IN_SAMPLE_POWER_OF_2)
    .displayer(new RoundedBitmapDisplayer(10))
    .build();

提前致谢。

Answer 1

首先你的配置:

ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context)
.threadPoolSize(3) // equal to default value
.threadPriority(Thread.NORM_PRIORITY - 1) // equal to default value
.memoryCache(new WeakMemoryCache())
.denyCacheImageMultipleSizesInMemory()
.offOutOfMemoryHandling()
.discCacheExtraOptions(720, 480, CompressFormat.JPEG, 75)
.discCache(new UnlimitedDiscCache(cacheDir)) // You can pass your own disc cache implementation
.discCacheFileNameGenerator(new HashCodeFileNameGenerator()) // equal to default value
.imageDownloader(new URLConnectionImageDownloader(120 * 1000, 120 * 1000)) // connectTimeout (5 s), readTimeout (20 s)
.defaultDisplayImageOptions(DisplayImageOptions.createSimple()) // equal to default value
.enableLogging()
.build();

等于

ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context)
.memoryCache(new WeakMemoryCache())
.denyCacheImageMultipleSizesInMemory()
.offOutOfMemoryHandling()
.discCacheExtraOptions(720, 480, CompressFormat.JPEG, 75)
.discCache(new UnlimitedDiscCache(cacheDir))
.imageDownloader(new URLConnectionImageDownloader(120 * 1000, 120 * 1000))
.enableLogging()
.build();

不要从自述文件复制配置!

为什么要关闭 OutOfMemory 处理？如果您这样做，那么您应该在 ImageLoadingListener.onLoadingFailed(FailReason.OUT_OF_MEMORY) 中自行处理 OOM 错误。

我给你的建议:

• 删除配置中的.offOutOfMemoryHandling()选项
• 删除配置中的 .discCacheExtraOptions(720, 480, CompressFormat.JPEG, 75) 选项
• 在显示选项中使用 .imageScaleType(ImageScaleType.IN_SAMPLE_INT)
• 你真的需要 RoundedBitmapDisplayer 吗？请参阅文档，它会在舍入期间在内存中创建额外的位图。尽可能避免使用它。