Android 从 URL 加载到位图

xml

java
private class LoadBitmapTask extends AsyncTask {
    
    @Override
    protected Bitmap doInBackground(String... urls) {
        String imageUrl = urls[0];
        Bitmap bitmap = null;
        try {
            URL url = new URL(imageUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setDoInput(true);
            connection.connect();
            InputStream input = connection.getInputStream();
            bitmap = BitmapFactory.decodeStream(input);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return bitmap;
    }
    @Override
    protected void onPostExecute(Bitmap result) {
        if (result != null) {
            // 在这里设置位图到ImageView或其他UI元素中进行显示
        }
    }
}

java
String imageUrl = "https://example.com/image.jpg";
new LoadBitmapTask().execute(imageUrl);