com.qozix.tileview.graphics.BitmapDecoderHttp Maven / Gradle / Ivy

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The TileView widget is a subclass of ViewGroup that provides a mechanism to asynchronously display tile-based images, with additional functionality for 2D dragging, flinging, pinch or double-tap to zoom, adding overlaying Views (markers), built-in Hot Spot support, dynamic path drawing, multiple levels of detail, and support for any relative positioning or coordinate system.

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package com.qozix.tileview.graphics;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import com.qozix.tileview.graphics.BitmapDecoder;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

public class BitmapDecoderHttp implements BitmapDecoder {

	private static final BitmapFactory.Options OPTIONS = new BitmapFactory.Options();
	static {
		OPTIONS.inPreferredConfig = Bitmap.Config.RGB_565;
	}
	
	@Override
	public Bitmap decode( String fileName, Context context ) {
		
		try {
			URL url = new URL(fileName);
			try {
				HttpURLConnection connection = (HttpURLConnection) url.openConnection();
				InputStream input = connection.getInputStream();
				if ( input != null ) {
					try {
						return BitmapFactory.decodeStream( input, null, OPTIONS );										
					} catch ( OutOfMemoryError oom ) {
						// oom - you can try sleeping (this method won't be called in the UI thread) or try again (or give up)
					} catch ( Exception e ) {
						// unknown error decoding bitmap
					}
				}
			} catch ( IOException e ) {
				// io error
			}			
		} catch ( MalformedURLException e1 ) {
			// bad url
		}
		return null;
	}


}