下面提供幾種將控制元件上的內容轉成bitmap的方式，根據需要選用

一imageview  轉bitmap  Bitmap image = ((BitmapDrawable)imageView.getDrawable()).getBitmap();   

二  可以控制大小

private static Bitmap convertViewToBitmap(View view) {
    view.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED), View.MeasureSpec.makeMeasureSpec
 
(0, View.MeasureSpec.UNSPECIFIED));
view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
view.buildDrawingCache();
Bitmap bitmap = view.getDrawingCache();
    return bitmap;
}

三 畫布方式轉換，測試沒問題

private static Bitmap createViewBitmap(View v) {
    Bitmap bitmap = Bitmap.createBitmap(v.getWidth(), 
 
v.getHeight(),
Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
v.draw(canvas);
    return bitmap;
}

private  static String getSDPath() {
    boolean hasSDCard = Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
    if (hasSDCard)
        return 
 
Environment.getExternalStorageDirectory().toString() + "/aasaving_picture";
    return null;
}

/**
 * 儲存圖片
 *
 * @param strFileName
*/
public  static  void saveImage(String strFileName, View view, Context  context) {

    if (getSDPath() == null) {
        Toast.makeText(context, "SD卡不存在", Toast.LENGTH_SHORT).show();
        return;
}
    Bitmap bitmap = createViewBitmap(view);
    if (bitmap == null) {
        Toast.makeText(context, "儲存失敗", Toast.LENGTH_SHORT).show();
        return;
}
    String strPath = getSDPath();
    try {
        File destDir = new File(strPath);
        if (!destDir.exists()) {
            Log.d("MagicMirror", "Dir not exist create it " + strPath);
destDir.mkdirs();
Log.d("MagicMirror", "Make dir success: " + strPath);
}

        File imageFile = new File(strPath + "/" + strFileName);
imageFile.createNewFile();
FileOutputStream fos = new FileOutputStream(imageFile);
bitmap.compress(Bitmap.CompressFormat.JPEG, 50, fos);
fos.flush();
fos.close();
Toast.makeText(context, "儲存成功", Toast.LENGTH_SHORT).show();
} catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
e.printStackTrace();
Toast.makeText(context, "儲存失敗", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
        // TODO Auto-generated catch block
Toast.makeText(context, "儲存失敗", Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
}