一个搜索栏增加触摸优先 [英] Increasing touch priority of a SeekBar

问题描述

我有一个搜索栏在 Horizo​​ntalScrollView 和我发现它很难抓住手柄，移动它。如果我完全不触及手柄， Horizo​​ntalScrollView 将接受和使用触摸事件。是否有增加的优先级的方式搜索栏所以它有触摸事件的正常范围或者这只是一个坏主意/设计，我应该避免？

I have a SeekBar inside a HorizontalScrollView and am finding it very hard to grab the handle and move it. If I don't touch exactly on the handle, the HorizontalScrollView will receive and consume the touch event. Is there a way to increase the priority of the SeekBar so it will have the normal "range" for touch events or is this just a bad idea/design and I should avoid it?

推荐答案

我做下面的解决是：

注意：我的滚动布局上锁，按如下说明： http://stackoverflow.com/ A /1067721分之5763815（只需付atention给我的回答有点低，我发现一点很重要）

NOTE: My scroll layout is lockable, as explained here: http://stackoverflow.com/a/5763815/1067721 (just pay atention to my answer a little bit lower, I found that bit to be important)

我再包我在的FrameLayout搜索栏能够拦截触摸事件：

I then wrapped my seekbar in a FrameLayout able to intercept touch events:

public class InterceptFrameLayout extends FrameLayout {

    private OnTouchListener mListener;

    public InterceptFrameLayout(Context context) {
        super(context);
    }

    public InterceptFrameLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public InterceptFrameLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    public boolean onInterceptTouchEvent (MotionEvent ev) {
        return onTouchEvent(ev);
    }

    @Override
    public void setOnTouchListener (View.OnTouchListener l) {
        mListener = l;
    }

    @Override
    public boolean onTouchEvent (MotionEvent ev) {
        if (mListener != null) {
            return mListener.onTouch(this, ev);
        } else {
            return super.onTouchEvent(ev);
        }
    }
}

然后，在我的片段，我实现了听众，让搜索栏消耗事件：

And then, on my Fragment, I implemented the listener and let the SeekBar consume the event:

    volWrapper.setOnTouchListener(new OnTouchListener() {           
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN: {
                    mHostingScroll.setScrollable(false);
                    break;
                }
                case MotionEvent.ACTION_UP: {
                    mHostingScroll.setScrollable(true);
                    break;
                }
            }
            return volumeBar.onTouchEvent(event);
        }
    });

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