Android-我使用StateListDrawable时的丑陋盒子

Question

I am using the following code -

StateListDrawable states2 = new StateListDrawable();
    states2.clearColorFilter();
    states2.addState(new int[] {android.R.attr.state_pressed},
        getResources().getDrawable(R.drawable.title_search_alt));
    //states.addState(new int[] {android.R.attr.state_focused},
    //    getResources().getDrawable(R.drawable.title_search_alt));
    states2.addState(new int[] { },
        getResources().getDrawable(R.drawable.inbox));
    ib2.setImageDrawable(states2);

However, when I run it, I get an ugly box surrounding my button. How do I get rid of it? I cannot use XML, so the solution has to be programmatic.

Edit:

looks like http://i56.tinypic.com/be645w.png supposed to look like http://i56.tinypic.com/14mdlwl.png

Answer 1

您需要使用android：background =“ @ null”将按钮的背景可绘制设置为其他值或空值

Answer 2

您可以只使用button.setBackgroundDrawable（states2） 。