Android，如何为ImageButton实现圆角，然后以编程方式更改颜色？

Question

I have ImageButton on the layout of my application and I want to have rounded corners for this ImageButton , so I'm using style like:

<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <stroke android:width="1dp"
        android:color="@android:color/black" />
    <corners android:radius="15dp" />
    <solid android:color="@android:color/black"/>
</shape>

and then I'm using android:background="@drawable/my_rounded_shape.xml"/>

The problem is that after this I want to change background color from black to some custom color, but I can't modify style programmatically and there is no way to generate new style with corners but with different color and apply to my ImageButton .

Could you clarify is there any way to do it or any workaround?

Answer 1

Try it: Create another XML Shape With Name For Example "SS" and with your new properties

<shape xmlns:android="http://schemas.android.com/apk/res/android">
<stroke android:width="2dp"
    android:color="@android:color/red" />
<corners android:radius="10dp" />
<solid android:color="@android:color/blue"/>

After then

Button b = (Button) (findViewById(R.id.button1));
    b.setBackgroundDrawable(getResources().getDrawable(R.drawable.ss));

Answer 2

After some time I came up with solution for my case - in my Java code I do something like:

GradientDrawable drawable = (GradientDrawable) imageButton.getBackground();
drawable.setColor(color);

This allows me to save rounded corners described in my "shape" and change background color at the same time.