Although I am quite late answering this question. Hope this helps someone who is stuck in this problem.
You don't need to make the bucket public. You can directly show the image via Glide. Here is my repo to load image from amazon s3 bucket via Glide.
https://github.com/jontyankit/Glide-Amazon-Image-Load
You need to override GlideModule and register our component
public class CustomGlideModule implements GlideModule {
@Override
public void applyOptions(Context context, GlideBuilder builder) {
builder.setDecodeFormat(DecodeFormat.PREFER_ARGB_8888);
}
@Override
public void registerComponents(Context context, Glide glide) {
glide.register(ImageModel.class, InputStream.class, new ImageLoader.Factory());
}
}
Make custom ModelLoader class. This class fetches the image on the basis of model described above instead of URL
public class ImageLoader implements ModelLoader<ImageModel, InputStream> {
private final ModelCache<ImageModel, ImageModel> mModelCache;
public ImageLoader(ModelCache<ImageModel, ImageModel> mModelCache) {
this.mModelCache = mModelCache;
}
@Override
public DataFetcher<InputStream> getResourceFetcher(ImageModel model, int width, int height) {
ImageModel imageModel = model;
if (mModelCache != null) {
imageModel = mModelCache.get(model, 0, 0);
if (imageModel == null) {
mModelCache.put(model, 0, 0, model);
imageModel = model;
}
}
return new ImageFetcher(imageModel);
}
public static class Factory implements ModelLoaderFactory<ImageModel, InputStream> {
private final ModelCache<ImageModel, ImageModel> mModelCache = new ModelCache<>(500);
@Override
public ModelLoader<ImageModel, InputStream> build(Context context, GenericLoaderFactory factories) {
return new ImageLoader(mModelCache);
}
@Override
public void teardown() {
}
}
}
And at last make custom class DataFetcher. public InputStream loadData(Priority priority) is the method which will download image from Amazon.
public class ImageFetcher implements DataFetcher<InputStream> {
private final ImageModel imageModel;
private InputStream mInputStream;
boolean downloadComplete = false;
int transferId = 0;
public ImageFetcher(ImageModel imageModel) {
this.imageModel = imageModel;
}
@Override
public InputStream loadData(Priority priority) throws Exception {
return fetchStream(imageModel);
}
private InputStream fetchStream(final ImageModel imageModel) {
TransferUtility transferUtility = AmazonClient.getClient().getTransferUtility();
TransferObserver bolomessages = transferUtility.download(imageModel.getBucketName(), imageModel.getId(), new File(imageModel.getLocalPath()));
transferId = bolomessages.getId();
bolomessages.setTransferListener(new TransferListener() {
@Override
public void onStateChanged(int id, TransferState state) {
Log.wtf("AWSS3", "onStateChanged = " + state);
if (state == TransferState.COMPLETED) {
File initialFile = new File(imageModel.getLocalPath());
try {
mInputStream = new FileInputStream(initialFile);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
downloadComplete = true;
}
}
@Override
public void onProgressChanged(int id, long bytesCurrent, long bytesTotal) {
}
@Override
public void onError(int id, Exception ex) {
// do something
Log.wtf("AWSS3", "onError");
ex.printStackTrace();
downloadComplete = true;
}
});
while (!downloadComplete){}
return mInputStream;
}
@Override
public void cleanup() {
if (mInputStream != null) {
try {
mInputStream.close();
} catch (IOException e) {
e.printStackTrace();
} finally {
mInputStream = null;
}
}
}
@Override
public String getId() {
return imageModel.getId();
}
@Override
public void cancel() {
AmazonClient.getClient().getTransferUtility().cancel(transferId);
}
}
