由于最近在做墨水屏的相关工作，ViewPager自带的滑动效果在墨水屏上表现的很不好，残影太重了。所以禁止自带的滑动效果，用接口来接管相关逻辑实现自处理。

import android.content.Context;

import android.util.AttributeSet;

import android.view.MotionEvent;

import androidx.annotation.NonNull;

import androidx.annotation.Nullable;

import androidx.viewpager.widget.ViewPager;

/**

* Created by Hu.Lei on 2019年11月28日, 0028.

* 禁止滑动

*/

public class NoSlidingViewPager extends ViewPager {

float beforeX = 0;

float lastX = 0;

public NoSlidingViewPager(@NonNull Context context) {

super(context);

}

public NoSlidingViewPager(@NonNull Context context, @Nullable AttributeSet attrs) {

super(context, attrs);

}

@Override

public boolean onInterceptTouchEvent(MotionEvent ev) {

int action = ev.getAction();

if (action == MotionEvent.ACTION_DOWN){

beforeX = ev.getX();

Utils.log("NoSlidingViewPager(ACTION_DOWN): x轴方向：beforeX --> " + beforeX);

} else if (action == MotionEvent.ACTION_UP){

lastX = ev.getX();

Utils.log("NoSlidingViewPager(ACTION_UP): x轴方向：beforeX --> " + beforeX + " lastX --> " + lastX);

if (beforeX == lastX){ // 点击事件

return super.onInterceptTouchEvent(ev);

} else {

if (beforeX > lastX){ // 向左滑动

if (listener != null){

listener.onLeftFling();

}

} else if (beforeX < lastX){ // 向右滑动

if (listener != null){

listener.onRightFling();

}

}

beforeX = 0;

lastX = 0;

return true;

}

}

return false;

}

public interface FlingListener{

void onLeftFling();

void onRightFling();

}

private FlingListener listener;

public void setFlingListener(FlingListener listener){

this.listener = listener;

}

}