如何更改按钮状态直到按下另一个按钮？

Question

I have a button that has a drawable XML file set as the background, this is so that when the button is pressed the background colour and outline of the button is change. However it does not stay like this, after a second it goes back to what it is before. How do I get it to stay with the changed colours until a different button is pressed?

<item android:state_pressed="true" >
    <shape>
        <solid
            android:color="#99000000" />
        <stroke
            android:width="1dp"
            android:color="#489d73" />
    </shape>
</item>
<item>
    <shape>
        <gradient
            android:startColor="#66000000"
            android:endColor="#66000000"
            android:angle="270" />

    </shape>
</item>

Answer 1

Create background drawables for each button state. Then when clicking another button change view's background programmatically.

Answer 2

如果希望按钮在更改之前保持其颜色，则必须以编程方式更改其背景。

Answer 3

您可以像这样以编程方式更改按钮背景。

btn.setBackgroundResource(R.drawable.buttondrawable)