Android load from URL to Bitmap

Question

I have a question about loading an image from a website. The code I use is:

Display display = getWindowManager().getDefaultDisplay();  int width = display.getWidth(); int height = display.getHeight(); Bitmap bit=null; try {     bit = BitmapFactory.decodeStream((InputStream)new URL("http://www.mac-wallpapers.com/bulkupload/wallpapers/Apple%20Wallpapers/apple-black-logo-wallpaper.jpg").getContent()); } catch (Exception e) {} Bitmap sc = Bitmap.createScaledBitmap(bit,width,height,true); canvas.drawBitmap(sc,0,0,null); 

But it always returns a null pointer exception and the program crashes out. The URL is valid, and it seems to work for everyone else. I'm using 2.3.1.

Answer 1

public static Bitmap getBitmapFromURL(String src) {     try {         URL url = new URL(src);         HttpURLConnection connection = (HttpURLConnection) url.openConnection();         connection.setDoInput(true);         connection.connect();         InputStream input = connection.getInputStream();         Bitmap myBitmap = BitmapFactory.decodeStream(input);         return myBitmap;     } catch (IOException e) {         // Log exception         return null;     } } 

Answer 2

If you are using Picasso or Glide or Universal-Image-Loader for load image from url.
You can simply get the loaded bitmap by

For Picasso (current version 2.71828)

Java code

Picasso.get().load(imageUrl).into(new Target() {     @Override     public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {         // loaded bitmap is here (bitmap)     }      @Override     public void onBitmapFailed(Drawable errorDrawable) { }      @Override     public void onPrepareLoad(Drawable placeHolderDrawable) {} }); 

Kotlin code

Picasso.get().load(url).into(object : com.squareup.picasso.Target {      override fun onBitmapLoaded(bitmap: Bitmap?, from: Picasso.LoadedFrom?) {          // loaded bitmap is here (bitmap)     }      override fun onPrepareLoad(placeHolderDrawable: Drawable?) {}      override fun onBitmapFailed(e: Exception?, errorDrawable: Drawable?) {} }) 

For Glide
Check How does one use glide to download an image into a bitmap?

For Universal-Image-Loader
Java code

imageLoader.loadImage(imageUrl, new SimpleImageLoadingListener()  {     @Override     public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage)      {          // loaded bitmap is here (loadedImage)     } });