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• 如何将图像Button放在X、和地点?
原标题:How to place ImageButton at x, y location?
  • 时间:2012-04-23 15:42:04
  •  标签:
  • android

I want to place ImageButton at x, y location of my view. The problem is that Android adds padding around image. Because I don t know exact size of padding, I cannot place image button at exact location. So, I want to remove padding. How can I remove padding around image programmatically? button.setPadding(0, 0, 0, 0) makes button width shorter and height longer than bitmap. button.getLayoutParams().width gives minus value. What I tried so far is like this.

protected class MyLayout extends RelativeLayout {
    Bitmap img;
    ImageButton button;

    public MyLayout(Context context) {
        button = new ImageButton(context);
        img = BitmapFactory.decodeResource(getResources(), R.drawable.img); 
        button.setImageBitmap(img);
        params = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
        button.setLayoutParams(params);
        params.setMargins(x, y, 0, 0);
        button.setBackgroundDrawable(null);
        addView(button, params);
    }
}       
问题回答

http://www.ohchr.org。

Use this...

     MarginLayoutParams marginParams = new MarginLayoutParams(image.getLayoutParams());  
     int left = someValue;
     int top = someValue;
     marginParams.setMargins(left, top, 0, 0);
     RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(marginParams);
     image.setLayoutParams(layoutParams);   




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