android - 如何在左侧制作带有可绘制对象的 TextView ，可以通过来自服务器的 url 以编程方式设置

Question

如何使 TextView 与左侧的 Drawable 可以从来自服务器的 url 以编程方式设置(drawable)。

Answer 1

好吧，第一步是从 URL 解码图像。

你可以这样做:

String yourUrl = "http://someUrl"; // insert your URL here

// connect, get an instance of the InputStream
HttpURLConnection connection = (HttpURLConnection) new URL(yourUrl).openConnection();
InputStream inputStream = connection.getInputStream();

// decode the stream into a Bitmap and create a Drawable from it
Bitmap tempBitmap = BitmapFactory.decodeStream(inputStream);
Drawable drawable = new BitmapDrawable(getResources(), tempBitmap);

然后，将其设置为 TextView 左侧的复合可绘制对象:

// the order is left, top, right, bottom, so you need to set the first param
yourTextView.setCompoundDrawables(drawable, null, null, null);