android - 如何保存在 webview 中显示的图像？

Question

我想将webview中显示的图片保存到本地存储，webview应该已经缓存了它显示的图片，如何访问缓存的图片并将它们保存到本地存储中？

Answer 1

WebView webView = new WebView(this);
//your image is in webview

Picture picture = webView.capturePicture();
Canvas canvas = new Canvas();
picture.draw(canvas);
Bitmap image = Bitmap.createBitmap(picture.getWidth(),
picture.getHeight(),Config.ARGB_8888);
canvas.drawBitmap(mimage, 0, 0, null);
if(image != null) {
    ByteArrayOutputStream mByteArrayOS = new
    ByteArrayOutputStream();
    image.compress(Bitmap.CompressFormat.JPEG, 90, mByteArrayOS);
    try {
        fos = openFileOutput("image.jpg", MODE_WORLD_WRITEABLE);
        fos.write(mByteArrayOS.toByteArray());
        fos.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

尝试上面的方法从 webView 捕获图像