java - 使用 Universal-Image-Downloader 下载图像时出现 SecurityException

Question

在我的应用程序中，我使用通用图像下载器 BaseImageDownloader 类来同步加载图库的内容。对于来自 Imageloader.getInstance().loadImage 异步函数的相同内容，它不会给出任何安全异常并加载图像但是当我尝试使用 BaseImageDownloader 同步下载它时(Imageloader.getInstance().loadImage() 也一样)我得到了这个安全异常

09-02 18:49:43.971: W/System.err(4244): java.lang.SecurityException: Permission Denial: reading com.android.gallery3d.provider.GalleryProvider uri content://com.google.android.gallery3d.provider/picasa/item/5879964074642783474 from pid=4244, uid=10064 requires com.google.android.gallery3d.permission.GALLERY_PROVIDER, or grantUriPermission()
09-02 18:49:43.971: W/System.err(4244):     at android.os.Parcel.readException(Parcel.java:1425)
09-02 18:49:43.971: W/System.err(4244):     at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:185)
09-02 18:49:43.971: W/System.err(4244):     at android.database.DatabaseUtils.readExceptionWithFileNotFoundExceptionFromParcel(DatabaseUtils.java:148)
09-02 18:49:43.971: W/System.err(4244):     at android.content.ContentProviderProxy.openTypedAssetFile(ContentProviderNative.java:617)
09-02 18:49:43.971: W/System.err(4244):     at android.content.ContentResolver.openTypedAssetFileDescriptor(ContentResolver.java:717)
09-02 18:49:44.011: W/System.err(4244):     at android.content.ContentResolver.openAssetFileDescriptor(ContentResolver.java:614)
09-02 18:49:44.011: W/System.err(4244):     at android.content.ContentResolver.openInputStream(ContentResolver.java:449)
09-02 18:49:44.011: W/System.err(4244):     at com.nostra13.universalimageloader.core.download.BaseImageDownloader.getStreamFromContent(BaseImageDownloader.java:156)
09-02 18:49:44.011: W/System.err(4244):     at com.nostra13.universalimageloader.core.download.BaseImageDownloader.getStream(BaseImageDownloader.java:88)
09-02 18:49:44.011: W/System.err(4244):     at com.uploader.data.UploadImageData.decodeSampledBitmapFromStream(UploadImageData.java:80)

我还搜索了代码，您没有在配置或其他地方获得任何许可，这是什么原因？

public Bitmap decodeSampledBitmapFromStream(String path, int reqWidth, int reqHeight) throws IOException {
        BaseImageDownloader downloader = new BaseImageDownloader(getApplicationContext());
        InputStream stream = downloader.getStream(path, null);
        final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(stream, new Rect(-1,-1,-1,-1), options);
        stream.close();
        options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

        options.inJustDecodeBounds = false;
        stream = downloader.getStream(path, null);
        Bitmap bitmap = BitmapFactory.decodeStream(stream, new Rect(-1,-1,-1,-1), options);
        stream.close();
        return bitmap;
    }

Answer 1

这不是 UIL 的错误 see here .根据this问题你应该在第一次加载时将图像加载到内部存储中，然后从那里读取图像。