如何使用 Android-Universal-Image-Loader 共享图像我有一个通过 imageloader 加载的图像视图,但为图像加载器提供了一个 URL,我认为图像加载器已经完成将图像从 URL 写入磁盘然后显示它
如何在不将其重新写入磁盘的情况下共享它?
item_zoom_image_view 是 ImageView selectedItemImage 是一个具有包含 URL ( http://... .)的属性的类
这是我的图像加载器配置:
public void initImageLoader(Context context) {
DisplayImageOptions options = new DisplayImageOptions.Builder()
.cacheOnDisc().imageScaleType(ImageScaleType.IN_SAMPLE_POWER_OF_2)
.bitmapConfig(Bitmap.Config.RGB_565)
.build();
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(
context).threadPriority(Thread.NORM_PRIORITY - 2)
.denyCacheImageMultipleSizesInMemory()
.discCacheFileNameGenerator(new Md5FileNameGenerator())
.defaultDisplayImageOptions(options)
.memoryCache(new WeakMemoryCache())
.denyCacheImageMultipleSizesInMemory()
.tasksProcessingOrder(QueueProcessingType.LIFO).build();
imgLoader = ImageLoader.getInstance();
imgLoader.init(config);
}
这是我显示图像的方式
ImageLoader imgLoader = AppData.imgLoader;
if (!selectedItemImage.getImageURL().trim().equals("")) {
imgLoader.displayImage(selectedItemImage.getImageURL(), item_zoom_image_view, new ImageLoadingListener() {
@Override
public void onLoadingStarted(String imageUri, View view) {
Progress.ShowProgressDialog(true);
currentImageURI = "";
}
@Override
public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
item_zoom_image_view.setImageResource(R.drawable.ic_artificial_flowers);
Progress.HideProgressDialog();;
currentImageURI = "";
}
@Override
public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
Progress.HideProgressDialog();;
currentImageURI = imageUri;
}
@Override
public void onLoadingCancelled(String imageUri, View view) {
item_zoom_image_view.setImageResource(R.drawable.ic_artificial_flowers);
Progress.HideProgressDialog();;
currentImageURI = "";
}
});
}
else
{
item_zoom_image_view.setImageResource(R.drawable.ic_artificial_flowers);
Progress.HideProgressDialog();;
currentImageURI = "";
}
这是我分享图像的方式:
void ShareImg() {
try {
Uri bmpUri = Uri.parse(currentImageURI);
if (bmpUri != null) {
// Construct a ShareIntent with link to image
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.putExtra(Intent.EXTRA_STREAM, bmpUri);
shareIntent.setType("image/*");
// Launch sharing dialog for image
startActivity(Intent.createChooser(shareIntent, "Share Image"));
} else {
// ...sharing failed, handle error
}
} catch (Exception e) {
}
}
问题是我在显示图像时使用的 URI (currentImageURI) 不正确或者我不知道但它显示的是黑色图像