android - How to switch between buttons after a specific time interval? -

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i creating android app(am beginner) in phone dialer screen, buttons have highlighted 1 one after given time interval sequentially.i using android studio.

thanks in advance.:)

a suggestion either using handler or timer:

new android.os.handler().postdelayed( new runnable() {     public void run() {         // paint button x     } }, 5000);

or using

new timer().scheduleatfixedrate(new timertask(){ @override public void run(){       // paint button x    } }, 0, 5000);

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