setCompoundDrawables

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今天做更新提示功能时,需要在有更新时展示更新标记如下:
在这里插入图片描述
这个布局是framLayout里面放两个textview,在有更新时右侧textview显示“new”图标。
所以图标需要代码里动态设置,我就直接使用方法setCompoundDrawables():

Drawable drawableLeft = ContextCompat.getDrawable(getActivity(),R.drawable.new_version_icon);
Drawable drawableRight = ContextCompat.getDrawable(getActivity(),R.drawable.right_arrow_icon);
mVersionInfoTv.setCompoundDrawables(drawableLeft,null,drawableRight,null);

来设置左侧和右侧图标,但是设置后却不会显示。
解决方法:
在这个方法前调用setBounds():

Drawable drawableLeft = ContextCompat.getDrawable(getActivity(),R.drawable.new_version_icon);
Drawable drawableRight = ContextCompat.getDrawable(getActivity(),R.drawable.right_arrow_icon);

drawableLeft.setBounds( 0, 0, drawableLeft.getMinimumWidth(),drawableLeft.getMinimumHeight());
drawableRight.setBounds( 0, 0, drawableRight.getMinimumWidth(),drawableRight.getMinimumHeight());

mVersionInfoTv.setCompoundDrawables(drawableLeft,null,drawableRight,null);

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转载自blog.csdn.net/cui130/article/details/84976316
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