Android - 任何用于将转发标签添加到位图的库

我一直在尝试制作一个照片共享应用程序，能够将您的图像和名称添加到图像中。我一整天都在用 Canvas 搞乱，但没有得到好的结果。我能够绘制名称和位图，但它们看起来不太好。

这就是为什么我在这里询问是否有任何库或代码可以帮助我制作类似于[this][1]的东西。我找不到任何东西。

编辑：抱歉没有添加我自己的代码

这是我最近尝试的代码

public void AddText(Position2D pos){
//Position2D is an enum having the 4 corners of the image
    bmWorking= bmOriginal.copy(Bitmap.Config.ARGB_8888,true);
    Canvas canvas = new Canvas(bmWorking);


    Paint paint = new Paint();
    paint.setColor(Color.WHITE);
    paint.setStyle(Paint.Style.FILL);
    Paint textPaint = new Paint();
    textPaint.setColor(Color.BLACK);
    float width = (35f/100f) * bmWorking.getWidth();
    float height = (width/16f) * 3;
    textPaint.setTextSize(height - 4);  //I wanted to have some space (margin) above and below the text
    textPaint.setTextAlign(Paint.Align.LEFT);
    float [] coords = getPositionCoords(pos, width, height);  //getPositionCoords returns a float array with the Left,Top,Right,Bottom position calculated based on the width and height
    canvas.drawRect(coords[0],coords[1], coords[2], coords[3],paint);
    username = "Haider Ali Punjabi";
    canvas.drawText(username, coords[0] ,coords[3], textPaint);
    bitmapView.setImageBitmap(bmWorking);

}

这是结果 https://i.stack.imgur.com/qNQ9I.png

UPDATE:@pskink 给了我这段代码 http://pastebin.com/JFYbDNLc效果很好

如果您想自定义它，则不要使用纯白色矩形（如原始代码中所示），而是使用Drawable结果可能是这样的：

代码：

// for int gravity: see android.view.Gravity, like Gravity.LEFT, Gravity.BOTTOM, etc
// for example:
// Bitmap out = addText(this, in, "Haider Ali Punjabi", android.R.drawable.alert_light_frame, Gravity.BOTTOM, new Point(10, 10));
public Bitmap addText(Context ctx, Bitmap in, String text, int resId, int gravity, Point pad) {
    if (pad == null) pad = new Point();

    Bitmap out = in.copy(Bitmap.Config.ARGB_8888, true);
    Canvas canvas = new Canvas(out);

    Paint textPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    textPaint.setColor(Color.BLACK);
    textPaint.setTextAlign(Paint.Align.LEFT);
//    textPaint.setTextSize(128);

    Rect inBounds = new Rect();
    textPaint.getTextBounds(text, 0, text.length(), inBounds);
    float scale = out.getWidth() * 0.35f / inBounds.width();

    Rect container = new Rect(0, 0, out.getWidth(), out.getHeight());
    Rect outBounds = new Rect();
    int w = (int) (inBounds.width() * scale);
    int h = (int) (inBounds.height() * scale);
    Gravity.apply(gravity, 2 * pad.x + w, 2 * pad.y + h, container, outBounds);

    Drawable dr = ctx.getResources().getDrawable(resId);
    Rect padding = new Rect();
    dr.getPadding(padding);
    dr.setBounds(outBounds.left - padding.left, outBounds.top - padding.top, outBounds.right + padding.right, outBounds.bottom + padding.bottom);
    dr.draw(canvas);
    Matrix matrix = new Matrix();
    RectF src = new RectF(inBounds);
    RectF dst = new RectF(outBounds);
    dst.inset(pad.x, pad.y);
    matrix.setRectToRect(src, dst, Matrix.ScaleToFit.CENTER);
    canvas.concat(matrix);
    canvas.drawText(text, 0, 0, textPaint);
    return out;
}