Develop Reference

Glide image from gallery to bitmap variable

I have a variable Bitmap image. I have imageButton in my fragment. I can change image of imageButton with Glide.with().load().into(). But I want not to just change image but to save it into Bitmap variable so I can use it for some other task. I tried this
Bitmap image = Glide.with(getContext()).asBitmap().load(imagePath).submit().get();
imageButton.setImageBitmap(image);
But image of imageButton does not change. What's wrong with first line then? Because I am pretty sure that problem is there but don't understand yet what is exactly wrong.
A solution is to do
Bitmap image = BitmapFactory.
decodeStream(getContext().
getContentResolver().
openInputStream(selectedImage));
imageButton.setImageBitmap(image);
Where selectedImage is Uri selectedImage = data.getData() of onActivityResult method, but it will be total mess because of size of bitmap, so we have to use createScaledBitmap, I don't like it. For some reason Bitmap image = BitmapFactory.decodeFile(imagePath) doesn't work, imageButton just becomes tiny grey square, and I didn't find a solution for this.

first of all why are using the imageButton..use imageView it will good than
imagebutton and it will work

I don't know if you should even think about doing this in some serious project but for now it did what needs to be done for me. Earlier I declared private Bitmap jopa.
Glide.with(getContext()).asBitmap().
load(selectedImage).override(500,500).
into(new CustomTarget<Bitmap>()
{
#Override
public void onResourceReady(#NonNull Bitmap resource, #Nullable Transition<? super Bitmap> transition) {
imgShare.setImageBitmap(resource);
jopa = ((BitmapDrawable)imgShare.getDrawable()).getBitmap();
}
#Override
public void onLoadCleared(#Nullable Drawable placeholder) {
}
});
Now Bitmap jopa can be used for other tasks. I hope. Tested it to change picture of another imageview, it worked, so I'll pray it will work further. Full onActivityResult code here. Don't want question to get too messy

Clickable image layers with transparent background

I have two images with transparent background.
I added both to the layout view.
I need to assign an onClickListener to each image.
The problem is that only the topmost image is firing the click event (is like if the top most image cover the rest and don't care about its transparent background). Both images are .png with transparent background
Here is the code:
ImageView img1, img2;
RelativeLayout l = (RelativeLayout)findViewById(R.id.layout1);
bm1 = BitmapFactory.decodeResource(getResources(), R.drawable.image1);
bm2 = BitmapFactory.decodeResource(getResources(), R.drawable.image2);
img1 = new ImageView(this);
img1.setImageBitmap(bm1);
l.addView(img1);
img2 = new ImageView(this);
img2.setImageBitmap(bm2);
l.addView(img1);
img1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v)
{
//code to process when img1 is clicked
}
});
img2.setOnClickListener(new View.OnClickListener() {
public void onClick(View v)
{
//code to process when img2 is clicked
}
});
In this example, only img2 is firing the event.
I need that both img2 and img1 can fire their events.
Thanks in advance for your help.

If the transparent background of one image covers the second, then the first will respond as being clicked, because the transparent background is counted as part of the image.
Perhaps the simplest answer would be a little bit of photo-editing to remove some of the transparent background. Crop the images a bit.

Android - add image from a class to a layout

So basicaly the theory is this: i want to create a class that holds a bitmap, which is loaded from a resource. then i want to create a new object of that class and add it to a layout.
So far i've managed to do everything except idk, how to add the bitmap to a layout.
And i want it to be displayed on an existing layout.
bitmap class:
class BitmapView extends View
{
public BitmapView(Context context)
{
super(context);
}
#Override
public void onDraw(Canvas canvas) {
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.wave);
// canvas.drawColor(Color.BLACK);
canvas.drawBitmap(bmp, 10, 10, null);
}
}
and i call it with setContentView(new BitmapView(this));
but this draws the picture over the whole screen. i want it to display the background that was set in a previous layout. Also is there any way i can set bitmap size?
Thanks

Use an Imageview for displaying bitmap
ImageView imgView=new ImageView(context);
imgView.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
imgView.setBitmapImage(bitmap); //Your bitmap goes here.
setContentView(imgView);

use setImageBitmap(bmp). Put an ImageView inside your layout. Reference it with ImageView im = (ImageView) findViewById(R.id.myBitmapId);. When you create your bitmap simply do im.setImageBitmap(bmp);

Resize Imageview and fitXY

I am resizing an ImageView and auto fitting the image to it, I need this for zoom in and out for image, this is the way i wish to implement this because the image is already 2048x2048 and I cant re-size it. Bu the code only works once for some reason, second click does not do anything. If you have other ideas or suggestions I would love to hear them. Thank you.
ImageView map = (ImageView) findViewById(R.id.imageViewMap);
Bitmap mapIm = BitmapFactory.decodeResource(getResources(),R.drawable.myMap);
map.setImageBitmap(mapIm); //first view
zoomIn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
map.getLayoutParams().height = counter*5000 ;
map.getLayoutParams().width = counter*5000;
BitmapDrawable bmd = new BitmapDrawable(mapIm);
map.setImageDrawable(bmd);
bmd = null;
counter++;
}
});

For zooming your image view
imageview.setScaleType(ScaleType.FIT_XY);
or you can try the following link hope it may help you
zoomableimageview
try this hope it may help you
example zoom

Getting error on bitmap.recycle() in my app

I am creating a app with 160 plus images all are between 150 and 300KB. And after testing the app in crashes giving me a out of memory error. I have read posts on here about that but when i implement bitmap.recycle() it gives a me a red line underneath the bitmap.
heres my code:
next.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
final ImageView imageView = (ImageView) findViewById(R.id.iM1);
imageView.setImageResource(R.drawable.sample);
bitmap.recycle();
slider.animateClose();
}
});
Can anyone plese help?

You have to have a BitMap to call bitmap.recycle(). BitMap.recycle() removes the bitmap you have write before the .recycle().
Example:
Bitmap someBit= new Bitmap (this);
someBit.recycle();
Based on the code above this is the right answear.