Question

I have 400 images in my server database. I am able to get those images and display in my emulator. But it is taking lot of time to get the image from server. Hence I want to get the image asynchronously. How can I achieve that task? Help me regarding this…Will be thankful in advance….

I want to convert the following code to asynchronous task….

My Code:

public View getView(.......)
{
ImageView myimgview = (ImageView) view.findViewById(R.id.imageView100);
drawable = LoadImageFromWebOperations(v.getTag().toString());
myimgview.setImageDrawable(drawable);
---
---
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}

private Drawable LoadImageFromWebOperations(String url) {
try {
    InputStream is = (InputStream) new URL(url).getContent();
    Drawable d = Drawable.createFromStream(is, "image.png");
    return d;
    }
catch (Exception e) 
{
    System.out.println("Exc=" + e);
    return null;
}
} 

Answer 1

You can use a thread in combination with a handler:

public void setImageInThread(final ImageView imageView, final String url) {
    final Handler handler = new Handler() {
        @Override
        public void handleMessage(Message message) {
            Drawable result = (Drawable) message.obj;
            imageView.setImageDrawable(result);
        }
    };

    new Thread() {
        @Override
        public void run() {
            Drawable drawable = getDrawable(url);
            Message message = handler.obtainMessage(1, drawable);
            handler.sendMessage(message);
        }
    }.start();
}

Where getDrawable is your function to get images synchronously.