禁用＆安培;在Android中启用寻呼ViewPager [英] Disabling & Enabling Paging In ViewPager in Android

问题描述

我采用了android兼容包4版在我的应用程序中显示PDF页面。
我已经使用PagerAdapter＆放大器; ViewPager显示PDF页面喜欢横向滚动视图。

I am using android compatibility package version 4 for displaying pdf pages in my app. I have used PagerAdapter & ViewPager for displaying pdf pages like horizontal scroll view.

现在的问题是分页相关stuff.I是能够通过根据此线程<一的viewpager内检测孩子的停止寻呼href=\"http://stackoverflow.com/questions/6920137/android-viewpager-and-horizontalscrollview\">android: ViewPager和Horizo​​ntalScrollVIew ，但如何才能够达到回来时，用户触摸视图外。我用下面的code为CustomViewPager。

Now the problem is in paging related stuff.I am able to stop paging by detecting childs inside the viewpager according to this thread android: ViewPager and HorizontalScrollVIew, but how can I can enable that back when user touches outside of that view. I have used following code for CustomViewPager.

public class CustomViewPager extends ViewPager {

        private boolean enabled;
        private int childId;

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

        public void setChildId(int childId) {
            this.childId = childId;
        }

        @Override
        public boolean onInterceptTouchEvent(MotionEvent event) {
            boolean result = false;
            View scroll = getChildAt(childId);
            if (scroll != null) {
                Rect rect = new Rect();
                CommonLogic.logMessage("PDF Page Rectangle  ", TAG, Log.VERBOSE);
                scroll.getHitRect(rect);
                if (rect.contains((int) event.getX(), (int) event.getY())) {
                    setPagingEnabled(false);
                    result = true;
                }
            }
            return result;
        }

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

        public void setPagingEnabled(boolean enabled) {
            this.enabled = enabled;
        }
    }

在尝试将PDF页面之外触摸然后也是如果（滚动！= NULL）在这两个方向为真。

When try to touch outside the pdf page then also that if(scroll!=null) becomes true in both orientation.

任何一个可以帮助我如何启用回去，这样分页将ViewPager继续。

Can any one help me out how to enable it back so that paging will continue in ViewPager.

推荐答案

我是有需要捏放大页面图像文件类似的问题。简单地说孤男寡女共处一的方式，当图像放大到禁用分页，使它显示在整个图像时。我解决了它这样的，并认为你可以做类似的事情。
首先扩展：类MyViewPager扩展ViewPager {...}
然后在这个类中重写以下两种方法

I was having a similar problem with paging image files that need pinch to zoom. Simply put Needing a way to disable paging when image is zoomed in and enable it when the whole image is shown. I solved it like this and think you could do a similar thing. First extend : class MyViewPager extends ViewPager {...} And then in that class override following two methods

    @Override
public boolean onTouchEvent(MotionEvent event) {
    if (YOUR_CRITERIA_TOENABLE_DISABLE) {
        return true;

    } else {
        return super.onTouchEvent(event);
    }
}

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

请务必使用您的视图寻呼机在XML布局或code动态创建。

Be sure to use your view pager in xml layouts or dynamic creation from code.

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