Question

我需要将准备好的布局保存到外部存储器中的图像文件

目前我已尝试获取布局，启用绘图缓存，传递到位图并保存在文件中

LayoutInflater inflate = LayoutInflater.from(this);
    View view = inflate.inflate(R.layout.to_send, null);
    view.setDrawingCacheEnabled(true);
    Bitmap returnedBitmap;
    if (view.getMeasuredHeight() <= 0) {
        view.measure(ViewGroup.LayoutParams.WRAP_CONTENT,ViewGroup.LayoutParams.WRAP_CONTENT);
        returnedBitmap = Bitmap.createBitmap(view.getMeasuredWidth(), view.getMeasuredHeight(), Bitmap.Config.ARGB_8888);
        returnedBitmap.recycle();
        Canvas c = new Canvas(returnedBitmap);
        view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
        view.draw(c);
    }
    else {
        returnedBitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(returnedBitmap);
        Drawable bgDrawable = view.getBackground();
        if (bgDrawable != null)
            bgDrawable.draw(canvas);
        else
            canvas.drawColor(Color.WHITE);
        view.draw(canvas);
    }
    //Bitmap bitmap = content.getDrawingCache();
    File fPath = Environment.getExternalStorageDirectory();
    File f = new File(fPath + "Send.png");
    try {
        if (!f.exists()) {
            f.createNewFile();
        }
        FileOutputStream strm = new FileOutputStream(f);
        returnedBitmap.compress(Bitmap.CompressFormat.PNG, 80, strm);
        strm.close();
        //content.invalidate();
    }
    catch (Exception e){
        e.printStackTrace();
    } finally {
        view.setDrawingCacheEnabled(false);}

Answer 1

如果有人遇到同样的问题。这解决了我的问题。我只需要在Activity

中创建后获得布局

RelativeLayout shareLayout = (RelativeLayout) getActivity().findViewById(R.id.loveSpace);
shareLayout.setDrawingCacheEnabled(true);
shareLayout.buildDrawingCache();
Bitmap bm = shareLayout.getDrawingCache();
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100, bytes);

Answer 2

RelativeLayout rlMain = (RelativeLayout)findViewById(R.id.abc);

    rlMain.setDrawingCacheEnabled(true);
    Bitmap bitmap = rlMain.getDrawingCache();


    String file = getFilename();

    try {

        FileOutputStream ostream = new FileOutputStream(file);
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, ostream);
        ostream.close();
        rlMain.invalidate();

    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        rlMain.setDrawingCacheEnabled(false);
    }



    private String getFilename() {
    File file = new File(IMAGE_PATH);
    if (!file.exists()) {
        file.mkdirs();
    }
    String uriSting = (file.getAbsolutePath() + "/"
            + System.currentTimeMillis() + ".jpg");
    return uriSting;
}

将准备好的布局转换为位图并将其另存为文件中的图像

2 个答案: