Question

我有一个页面，其第一部分包含动画。当用户滑动时，动画进入并出现webview。在向上滑动时，webview将继续显示动画。由于webview正在消耗触摸，我将覆盖webview触摸并将其传递给gesturedetector对象。但我真正想要的是在webview和gesturedetector之间切换控件。现在，gesturedetector工作或webview工作，但它不能一起工作。有什么帮助吗？

这就是我现在正在做的事情：

    webView.setOnTouchListener(new View.OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // TODO Auto-generated method stub

            return gestureDetector.onTouchEvent(event);
            // return false;

        }
    });

手势检测器处理动画和webview之间的滑动：

    gestureDetector = new GestureDetector(getActivity(),
            new GestureDetector.SimpleOnGestureListener() {
                /* Function to pause the video on tap */
                @Override
                public boolean onSingleTapConfirmed(MotionEvent e) {
                    /* On Touch event pressed play and pause the videoplayer */
                    return true;
                }

                /*
                 * OnDown() has to return true for the fling methof to take
                 * place
                 */
                @Override
                public boolean onDown(MotionEvent e) {
                    return true;
                }

                @Override
                public boolean onFling(MotionEvent e1, MotionEvent e2,
                        float velocityX, float velocityY) {

Answer 1

将GestureDetector与自定义网络视图一起使用..

webView.setGestureDetector（new GestureDetector（new CustomeGestureDetector（）））;

手势检测器：

private class CustomeGestureDetector extends SimpleOnGestureListener {      
    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
        if(e1 == null || e2 == null) return false;
        if(e1.getPointerCount() > 1 || e2.getPointerCount() > 1) return false;
        else {
            try { // right to left swipe .. go to next page
                if(e1.getX() - e2.getX() > 100 && Math.abs(velocityX) > 800) {
                    //do your stuff
                    return true;
                } //left to right swipe .. go to prev page
                else if (e2.getX() - e1.getX() > 100 && Math.abs(velocityX) > 800) {
                    //do your stuff
                    return true;
                } //bottom to top, go to next document
                else if(e1.getY() - e2.getY() > 100 && Math.abs(velocityY) > 800 
                        && webView.getScrollY() >= webView.getScale() * (webView.getContentHeight() - webView.getHeight())) {
                    //do your stuff
                    return true;
                } //top to bottom, go to prev document
                else if (e2.getY() - e1.getY() > 100 && Math.abs(velocityY) > 800 ) {
                    //do your stuff
                    return true;
                } 
            } catch (Exception e) { // nothing
            }
            return false;
        }
    }
}

自定义网络视图

public final class CustomWebView extends WebView {

private GestureDetector gestureDetector;

/**
 * @param context
 * @param attrs
 * @param defStyle
 */
public CustomWebView(Context context) {
    super(context);
}

/**
 * @param context
 * @param attrs
 * @param defStyle
 */
public CustomWebView(Context context, AttributeSet attrs) {
    super(context, attrs);
}

/**
 * @param context
 * @param attrs
 * @param defStyle
 */
public CustomWebView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}

/* 
 * @see android.webkit.WebView#onScrollChanged(int, int, int, int)
 */
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt) {
    super.onScrollChanged(l, t, oldl, oldt);
}

/* 
 * @see android.webkit.WebView#onTouchEvent(android.view.MotionEvent)
 */
@Override
public boolean onTouchEvent(MotionEvent ev) {
    return gestureDetector.onTouchEvent(ev) || super.onTouchEvent(ev);
}

public void setGestureDetector(GestureDetector gestureDetector) {
    this.gestureDetector = gestureDetector;
}
}

WebView与滑动手势

1 个答案: