Drawable to bitmap efficiently using Picasso onBitmapFailed() method - android

I'm using target as callback mechanism (with Picasso).
private Target target = new Target() {
#Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
// loading of the bitmap was a success
// TODO do some action with the bitmap
}
#Override
public void onBitmapFailed(Drawable errorDrawable) {
// loading of the bitmap failed
// TODO do some action/warning/error message
}
#Override
public void onPrepareLoad(Drawable placeHolderDrawable) {
}
};
Picasso
.with(context)
.load(...)
.into(target);
I want to load placeholder if bitmap fails to load, here:
#Override
public void onBitmapFailed(Drawable errorDrawable) {
}
My drawable placeholder is located locally in res/drawable folder.
Which is the best way to do the convertion from DRAWABLE to BITMAP?
FIRST WAY, (Alot of people suggests on SO this way):
Bitmap placeholderIcon = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.placeholder);
SECOND WAY, (I think it should be more memory effiecient)
#Override
public void onBitmapFailed(Drawable errorDrawable) {
errorDrawable = getResources().getDrawable(R.drawable.poster_placeholder);
Bitmap placeholderIcon = ((BitmapDrawable) errorDrawable).getBitmap();
}

Related

Load image from URI as layout background

I have used Picasso to load an image from my company's CDN into a ImageView:
ImageView imgView;
//...
Picasso.with(context).load(Uri.parse(url)).into(imgView);
But now I need load an image as a layout background:
RelativeLayout theLayout;
//...
Picasso.with(context).load(Uri.parse(url)).into(...);
Is it possible with Picasso? If not, should I use a ImageView instead of Relativelayout?

you can use glide to download bitmap and set it as background from any layout.
Glide
.with(getApplicationContext())
.load("https://www.google.es/images/srpr/logo11w.png")
.asBitmap()
.into(new SimpleTarget<Bitmap>(100,100) {
#Override
public void onResourceReady(Bitmap resource, GlideAnimation glideAnimation) {
Drawable dr = new BitmapDrawable(resource);
theLayout.setBackgroundDrawable(dr);
// Possibly runOnUiThread()
}
});
but the better way is to use imageView on top of relativelayout and make it match_parent and show image on this imageview. this will help you directly use glide or picaso to load image in image view without memory errors.

Picasso.with(getActivity()).load(your url).into(new Target(){
#Override
public void onBitmapLoaded(Bitmap bitmap, LoadedFrom from) {
yourlayout.setBackground(new BitmapDrawable(context.getResources(), bitmap));
}
edit:
you may need to override following methods as well
#Override
public void onBitmapFailed(final Drawable errorDrawable) {
Log.e("TAG", "Failed");
}
#Override
public void onPrepareLoad(final Drawable placeHolderDrawable) {
Log.e("TAG", "Prepare Load");
}
}

Yes. You can use Picasso for this. Please check following code :
Picasso.with(getActivity()).load(Uri.parse(url)).into(new Target(){
#Override
public void onBitmapLoaded(Bitmap bitmap, LoadedFrom from) {
relativeLayout.setBackground(new BitmapDrawable(context.getResources(), bitmap));
}
#Override
public void onBitmapFailed(final Drawable errorDrawable) {
Log.d("TAG", "FAILED");
}
#Override
public void onPrepareLoad(final Drawable placeHolderDrawable) {
Log.d("TAG", "Prepare Load");
}
})

Holding strong reference to Picasso Target does not work

I am using Picasso to add an icon to my actionbar. I've read that in order to load the image every time I need to make my Target of strong reference and for that I've used final. But, again, it goes into onPrepareLoad and never reaches onBitmapLoaded.
What am I doing wrong?
private void setLogoToActionBar() {
final Target target = new Target() {
#Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
Log.d("DEBUG", "onBitmapLoaded");
Drawable d = new BitmapDrawable(getResources(), bitmap);
actionBar.setIcon(d);
}
#Override
public void onBitmapFailed(Drawable errorDrawable) {
Log.d("DEBUG", "onBitmapFailed");
}
#Override
public void onPrepareLoad(Drawable placeHolderDrawable) {
Log.d("DEBUG", "onPrepareLoad");
actionBar.setIcon(placeHolderDrawable);
}
};
Picasso.with(getContext()).load(mShop.getClientLogo()).placeholder(R.drawable.shop_asset).resize(100, 100).into(target);
}

Picasso never calling completion handler while trying to load an image on Android

I am trying to load an image:
Picasso.with(SelectActivity.this).load(picture).into(new Target() {
#Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
bmp = bitmap;
findViewById(R.id.facebookButton).setEnabled(true);
continueToEditing();
}
#Override
public void onBitmapFailed(Drawable errorDrawable) {
findViewById(R.id.facebookButton).setEnabled(true);
}
#Override
public void onPrepareLoad(Drawable placeHolderDrawable) {
}
});
picture is a valid string to a reachable, valid JPEG image. I've got everything inside a try/catch block and I've got breakpoints on onBitmapLoaded, onBitmapFailed, and try/catch's catch block.
However, none of this is called. There is also nothing in logcat related to this, too. What am I doing wrong?

Try keeping a strong reference to the Target object as a class variable and give it a try.
E.g.
Target target;// Class variable
//Now define this on your onCreate method
target = new Target() {
#Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
bmp = bitmap;
findViewById(R.id.facebookButton).setEnabled(true);
continueToEditing();
}
#Override
public void onBitmapFailed(Drawable errorDrawable) {
findViewById(R.id.facebookButton).setEnabled(true);
}
#Override
public void onPrepareLoad(Drawable placeHolderDrawable) {
}
});
//Now set the target on the Piccaso load LOC
Picasso.with(SelectActivity.this).load(picture).into(target);

Unable to download the bitmap to a target using Picasso?

I am trying to load the bitmaps to an arraylist as follows:
Picasso.with(context).load(url).into(new Target(){
#Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
//mainLayout.setBackground(new BitmapDrawable(context.getResources(), bitmap));
photos.add(bitmap);
}
#Override
public void onBitmapFailed(final Drawable errorDrawable) {
Log.d("TAG", "FAILED");
}
#Override
public void onPrepareLoad(final Drawable placeHolderDrawable) {
Log.d("TAG", "Prepare Load");
}
});
But why is the onBitmapLoaded method never called?

Picasso, doesn't hold strong references to new Target() it will be garbage collected
look over this

android get Drawable image after picasso loaded

I am using Picasso library to load image from url. The code I used is below.
Picasso.with(getContext()).load(url).placeholder(R.drawable.placeholder)
.error(R.drawable.placeholder).into(imageView);
What I wanna do is to get the image that loaded from url. I used
Drawable image = imageView.getDrawable();
However, this will always return placeholder image instead of the image load from url. Do you guys have any idea? How should I access the drawable image that it's just loaded from url.
Thanks in advance.

This is because the image is loading asynchronously. You need to get the drawable when it is finished loading into the view:
Target target = new Target() {
#Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
imageView.setImageBitmap(bitmap);
Drawable image = imageView.getDrawable();
}
#Override
public void onBitmapFailed(Drawable errorDrawable) {}
#Override
public void onPrepareLoad(Drawable placeHolderDrawable) {}
};
Picasso.with(this).load("url").into(target);

mImageView.post(new Runnable() {
#Override
public void run() {
mPicasso = Picasso.with(mImageView.getContext());
mPicasso.load(IMAGE_URL)
.resize(mImageView.getWidth(), mImageView.getHeight())
.centerCrop()
.into(mImageView, new com.squareup.picasso.Callback() {
#Override
public void onSuccess() {
Drawable drawable = mImageView.getDrawable();
// ...
}
#Override
public void onError() {
// ...
}
});
}
});

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