Question

怎么解决安卓开发的滑动事件冲突

Answer 1

需求：一个ViewGroup中有多个控件，类似于常见的底部Tab布局，这几个子布局之间既可以点击切换，也可以左右滑动切换
实现：自定义父控件，在onInterceptTouchEvent方法中判断是否点击还是滑动，如果判断是点击，则直接交给child来响应点击事件去；如果是滑动，则
拦截事件，并通过回调传递给调用者处理。
优点：该控件只对触摸事件的分发做了相应处理，适用于各种滑动与点击冲突的情况....
使用：直接将该控件作为父布局即可，通过setmSetOnSlideListener回调处理对应滑动事件

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.ViewConfiguration;
import android.widget.RelativeLayout;

public class MyRadioRelativeLayout extends RelativeLayout {

public MyRadioRelativeLayout(Context context) {
this(context, null);
}

public MyRadioRelativeLayout(Context context, AttributeSet attrs,
int defStyleAttr) {
super(context, attrs, defStyleAttr);
initView();
}

public MyRadioRelativeLayout(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}

private void initView() {

}

private boolean mScrolling;
private float touchDownX;

@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
touchDownX = event.getX();
mScrolling = false;
break;
case MotionEvent.ACTION_MOVE:
if (Math.abs(touchDownX - event.getX()) >= ViewConfiguration.get(
getContext()).getScaledTouchSlop()) {
mScrolling = true;
} else {
mScrolling = false;
}
break;
case MotionEvent.ACTION_UP:
mScrolling = false;
break;
}
return mScrolling;
}

float x1 = 0;
float x2 = 0;
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
return true;
case MotionEvent.ACTION_MOVE:

break;
case MotionEvent.ACTION_UP:
x2 = event.getX();
if (touchDownX - x2 > DensityUtil.dip2px(getContext(), 40)) {
if(mSetOnSlideListener!=null){
mSetOnSlideListener.onRightToLeftSlide();
}
}
if (touchDownX - x2 < -DensityUtil.dip2px(getContext(), 40)) {
if(mSetOnSlideListener!=null){
mSetOnSlideListener.onLeftToRightSlide();
}
}
break;
}

return super.onTouchEvent(event);
}

private setOnSlideListener mSetOnSlideListener;

public setOnSlideListener getmSetOnSlideListener() {
return mSetOnSlideListener;
}

public void setmSetOnSlideListener(setOnSlideListener mSetOnSlideListener) {
this.mSetOnSlideListener = mSetOnSlideListener;
}

public interface setOnSlideListener{
void onRightToLeftSlide();
void onLeftToRightSlide();
}

}