Android 網路圖片轉Drawable

1.有一張網路圖片路徑

private void initAudio(){

new DownloadImageTask().execute(YouTubeUtil.getYoutubePic(youtubeId));

}

2. 透過異步下載

private class DownloadImageTask extends AsyncTask<String, Void, Drawable> {

protected Drawable doInBackground(String... urls) {

return loadImageFromNetwork(urls[0]);

}

protected void onPostExecute(Drawable result) {

tracks.add(new Track("Track 0", "Artist 0", result));

// mImageView.setImageDrawable(result);

}

}

3.內建工具轉換

private Drawable loadImageFromNetwork(String urladdr){

Drawable drawable = null;

try{

//judge if has picture locate or not according to filename

drawable = Drawable.createFromStream(new URL(urladdr).openStream(), "image.jpg");

}catch(Exception e){

Log.d("test",e.getMessage());

}

if(drawable == null){

Log.d("test","null drawable");

}else{

Log.d("test","not null drawable");

}

return drawable;

}