Android SDK ImageButton 在 Gravity.Right 时拉伸
我有这样的代码：
ImageButton call = new ImageButton(context);
call.setId(9001+result.index);
call.setBackgroundResource(R.drawable.small_call);
LinearLayout.LayoutParams call_params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT
);
call.setLayoutParams(call_params);
它按照我想要的方式渲染按钮，但是当我这样做时：
ImageButton call = new ImageButton(context);
call.setId(9001+result.index);
call.setBackgroundResource(R.drawable.small_call);
LinearLayout.LayoutParams call_params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT,
Gravity.CENTER_VERTICAL | Gravity.RIGHT
);
call.setLayoutParams(call_params);
它会拉伸图像，弄乱纵横比，并使其模糊/像素化。
那么，像第一个代码片段中那样渲染图像，但将按钮放置在第二个代码片段放置的位置的正确方法是什么？
提前致谢。
I have this code:
ImageButton call = new ImageButton(context);
call.setId(9001+result.index);
call.setBackgroundResource(R.drawable.small_call);
LinearLayout.LayoutParams call_params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT
);
call.setLayoutParams(call_params);
It renders the button the way I want it, but when I do this:
ImageButton call = new ImageButton(context);
call.setId(9001+result.index);
call.setBackgroundResource(R.drawable.small_call);
LinearLayout.LayoutParams call_params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT,
Gravity.CENTER_VERTICAL | Gravity.RIGHT
);
call.setLayoutParams(call_params);
It stretches the image, messing up the aspect ratio, and makes it blurry/pixelated.
So what is the correct way to render the image as in the first code snippet, but place the button where the second code snippet puts it?
Thanks in advance.
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使用
RelativeLayout或FrameLayout而不是LinearLayout。另请参阅LinearLayout 中的layout_gravity。
这是一个教程：Android 中相对布局的视觉指南。
Use
RelativeLayoutorFrameLayoutinstead ofLinearLayout.See also layout_gravity in LinearLayout.
This is a tutorial: A Visual Guide to Relative Layouts In Android.