通用图像加载器：OutOfMemory 错误答案

【问题标题】：Universal-Image-Loader: OutOfMemory Error通用图像加载器：OutOfMemory 错误
【发布时间】：2012-10-23 01:05:08
【问题描述】：

我正在使用universal-image-loader-1.6.2.jar（最新版本）。我正在尝试使用此库下载和缓存该图像。我有 47 张图片要从服务器下载，总共 5.22 Mb。我的最大图片尺寸为 720X480，大小约为 143kb。它运行良好，直到 40-41 图像之后它给出错误

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 上看到并实施了关于 OOM 的建议。我跟着他们，我仍然收到错误。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。

【问题讨论】：

标签： universal-image-loader

【解决方案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();

不要从自述文件中复制配置！

你为什么关闭 OutOfMemory 处理？如果您这样做，那么您应该在ImageLoadingListener.onLoadingFailed(FailReason.OUT_OF_MEMORY) 中自己处理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)
您真的需要 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。

【讨论】：