Android uses activity to monitor the sliding of fingers up, down, left and right
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Android
Use the ontouchevent method of activity to monitor the sliding of fingers up, down, left and right
The ontouchevent method of activity is applied to monitor the finger click event. When the finger slides, it will press first, slide to another place and then lift up. We can calculate the direction the user slides in according to the pressed coordinates and the raised coordinates.
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