android - Button Highlight -

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i have keypad have created app. problem is, have implement button highlight user slides finger through keys. have tried several ways, none works. default when user clicks on new button, android highlights me, when try move next button form current button, touch event not working. how achieve this.

use gesturedetector ontouchevent solve problem. , use canvas highlight specific location .this done based on values return motionevent.


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