用ImageLoder加载图片

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注意了：千万不要忘了给ImageLoder初始化还有不要忘了倒包

public class ImageLoder extends AsyncTask<String,Void,Bitmap>{    public interface  ImageBall{        void callBitmap(Bitmap bitmap);    }    private ImageBall imageBall;    public ImageLoder(ImageBall imageBall) {        this.imageBall = imageBall;    }    @Override    protected void onPostExecute(Bitmap bitmap) {        imageBall.callBitmap(bitmap);    }    @Override    protected Bitmap doInBackground(String... params) {        try {            String str=  params[0];            URL url=new URL(str);            HttpURLConnection connection= (HttpURLConnection) url.openConnection();            connection.setReadTimeout(5000);            connection.setRequestMethod("GET");            connection.setConnectTimeout(5000);          int code=  connection.getResponseCode();            if (code==200){             InputStream si= connection.getInputStream();                return BitmapFactory.decodeStream(si);            }        } catch (Exception e) {            e.printStackTrace();        }        return null;    }}

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