小编Aru*_*ria的帖子

我有一个透明背景的相对布局,其中包含图像,文本等,当我通过使用绘图缓存或画布捕获其位图时,透明颜色转换为黑色我尝试了很多方法,但没有成功...

rl_mainCanvesLayout.setDrawingCacheBackgroundColor(Color.TRANSPARENT);
Bitmap bitmap =Bitmap.createBitmap(rl_mainCanvesLayout.getDrawingCache());
rl_mainCanvesLayout.setDrawingCacheEnabled(false);
Bitmap bitmap = Bitmap.createBitmap(rl_mainCanvesLayout.getDrawingCache());

private String savebitmap(Bitmap bitmap, String filename) {
    String dir = Environment.getExternalStorageDirectory() + File.separator  + "abc";
    File file_dir = new File(dir);
    file_dir.mkdir();
    FileOutputStream outStream = null;
    File file = new File(dir, filename + ".jpg");
    if (file.exists()) {
        file.delete();
        file = new File(dir, filename + ".jpg");
        Log.e("file exist", "" + file + ",Bitmap= " + filename);
    }
    try {
        outStream = new FileOutputStream(file);
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outStream);
        outStream.flush();
        outStream.close();

    } catch (Exception e) …