Question

我有一个MainActivity，持有10个片段。我想禁用在特定页面中从右向左滑动并显示弹出窗口，而使用取消和确认按钮，单击确认将转到下一个片段。我通过MainActivity中的OnTouch实现实现了这一目标。但是片段在生成弹出窗口之前正在移动。我在Stackoverflow的其他答案中尝试了很多，但没有运气。 dispatchTouchEvent()，OnTouchIntercept()，OnTouchEvent()有帮助吗？

这是为viewpager实现的OnTouch方法。

@Override
        public boolean onTouch(View v, MotionEvent event) {

            int action = event.getActionMasked();
            float finalX;
            float finalY;
            switch (action) {

                case MotionEvent.ACTION_DOWN:
                    initialX = event.getX();
                    initialY = event.getY();
                    //Log.i(TAG, "Action was DOWN");
                    return true;

                /*case MotionEvent.ACTION_MOVE:
                    //Log.i(TAG, "Action was MOVE");
                    finalX = event.getX();
                    finalY = event.getY();

                    if (initialX > finalX) {
                        //Log.i(TAG, "Left to Right swipe performed");
                        return true;
                    }
                    else return false;*/

                case MotionEvent.ACTION_UP:

                    finalX = event.getX();
                    finalY = event.getY();

                    //Log.i(TAG, "Action was UP");

                    if (initialX < finalX) {
                        Log.i(TAG, "Left to Right swipe performed");
                        return false;
                        //mViewPager2.setCurrentItem(mViewPager2.getCurrentItem()-1);
                    }

                    if (initialX > finalX) {
                        Log.i(TAG, "Right to Left swipe performed");
                        int a = mViewPager2.getCurrentItem();
                        if(a==0||a==1||a==2||a==4||a==6){
                            displayPopup();
                            return true;
                        }
                        else if(a==7 && screenPreferences.getInt("user_login",0) == 0){
                            displayPopup();
                            return true;
                        }
                        else return false;

                    }

                    if (initialY < finalY) {
                        //Log.i(TAG, "Up to Down swipe performed");
                        return true;
                    }

                    if (initialY > finalY) {
                        //Log.i(TAG, "Down to Up swipe performed");
                        return true;
                    }
                    break;

                case MotionEvent.ACTION_CANCEL:
                    //Log.i(TAG,"Action was CANCEL");
                    break;

                case MotionEvent.ACTION_OUTSIDE:
                    //Log.i(TAG, "Movement occurred outside bounds of current screen element");
                    break;
            }
            return false;
        }

Answer 1

我想在特定页面中禁用从右到左的滑动

您可以使用自定义ViewPager执行此操作，使用方法setPagingEnabled禁用/启用滑动

public class CustomViewPager extends ViewPager {

    private boolean enabled;

    public AHBottomNavigationViewPager(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.enabled = false;
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (this.enabled) {
            return super.onTouchEvent(event);
        }

        return false;
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent event) {
        if (this.enabled) {
            return super.onInterceptTouchEvent(event);
        }

        return false;
    }

    /**
     * Enable or disable the swipe navigation
     * @param enabled
     */
    public void setPagingEnabled(boolean enabled) {
        this.enabled = enabled;
    }
}

由于您成功检测到了滑动，因此您可以应用代码在状态下显示弹出窗口禁用刷取viewpager以显示弹出窗口，然后您可以控制单击确认/取消弹出窗口以设置下一个片段。

在ViewPager中从左向右滑动时显示弹出窗口，并且不应移动弹出页面

1 个答案: