Android的左/右轻扫手势的WebView活动（与单击链接和垂直srolling） [英] Android left/right swipe gesture in WebView activity (with clicking on links and vertical srolling)

问题描述

解决的，解决方法是下面。

SOLVED, solution is underneath.

我想在web视图替换键导航至2滑动手势 - 左，右轻扫。该<一href="http://stackoverflow.com/questions/4139288/android-how-to-handle-right-to-left-swipe-gestures">Android:如何正确处理向左滑动手势链接真的帮了我，但我遇到的一个问题 - 执行本code我无法点击链接/或滚动的WebView活动throught加载网页后（我用的第一次从可能的答案回答）。

I want to replace buttons for navigation in webview to 2 swipe gestures - left and right swipe. This Android: How to handle right to left swipe gestures link really helped me, but I encountered problem - after implementing this code I was unable to click on links/ or scroll throught loaded webpage in webview activity(I have used 1st answer from possible answers).

后来我发现，在这个问题的另一个答案是类似的东西 - HTTP - 如何在列表视图滚动：//计算器。 COM / A /三百二十七万二千四百四十九分之二千万五千四百八十一，但我不能让它运行。在logcat中我得到这个调试信息： http://s27.postimg.org/5qfipgi1v/message.png

Then I found out that in another answer in this question is something similar - how to scroll in listview - http://stackoverflow.com/a/20005481/3272449, but I wasn't able to get it running. In logcat i get this debug info: http://s27.postimg.org/5qfipgi1v/message.png

这是我OnSwipeTouchListener：

This is my OnSwipeTouchListener:

import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;

public class OnSwipeTouchListener implements OnTouchListener {

private final GestureDetector gestureDetector = new GestureDetector(new GestureListener());

public boolean onTouch(final View view, final MotionEvent motionEvent) {
    return gestureDetector.onTouchEvent(motionEvent);
}

private final class GestureListener extends SimpleOnGestureListener {

    private static final int SWIPE_THRESHOLD = 100;
    private static final int SWIPE_VELOCITY_THRESHOLD = 100;

    @Override
    public boolean onDown(MotionEvent e) {
        return true;
    }

    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
        boolean result = false;
        try {
            float diffY = e2.getY() - e1.getY();
            float diffX = e2.getX() - e1.getX();
            if (Math.abs(diffX) > Math.abs(diffY)) {
                if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
                    if (diffX > 0) {
                        onSwipeRight();
                    } else {
                        onSwipeLeft();
                    }
                }
            }
        } catch (Exception exception) {
            exception.printStackTrace();
        }
        return result;
    }
}

public void onSwipeRight() {
}

public void onSwipeLeft() {
}

public GestureDetector getGestureDetector(){
    return  gestureDetector;
}
}

和我的WebView活动（剥离）：

And my webview activity(stripped):

public class WebViewActivity extends Activity {
private WebView browser;
    private OnSwipeTouchListener onSwipeTouchListener;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.webview);
            onSwipeTouchListener = new OnSwipeTouchListener() {
public void onSwipeRight() {
    Toast.makeText(WebViewActivity.this, "right", Toast.LENGTH_SHORT).show();
}
public void onSwipeLeft() {
    Toast.makeText(WebViewActivity.this, "left", Toast.LENGTH_SHORT).show();
}
};

browser.setOnTouchListener(onSwipeTouchListener);
} // end of onCreate
@Override
public boolean dispatchTouchEvent(MotionEvent ev){
    onSwipeTouchListener.getGestureDetector().onTouchEvent(ev); 
        return super.dispatchTouchEvent(ev);   
}
} // end of WebViewActivity

如何使左/右刷卡，垂直srolling和点击链接在同一时间工作？

How to make left/right swiping, vertical srolling and clicking on links working at the same time?

解决方案：同解决的问题：  一扔手势和web视图Android中

SOLUTION: Same solved question: Fling Gesture and Webview in Android

推荐答案

我不与 GestureDetector 来可靠地诊断问题非常熟悉。有一件事你可以尝试是克隆事件：

I'm not familiar enough with the GestureDetector to reliably diagnose your problem. One thing you could try is cloning the event:

@Override
public boolean dispatchTouchEvent(MotionEvent ev){
    onSwipeTouchListener.getGestureDetector().onTouchEvent(MotionEvent.obtain(ev)); 
    return super.dispatchTouchEvent(ev);   
}

如果做不到这一点的另一种方式处理这个是使用<一个href="http://developer.android.com/reference/android/webkit/WebView.html#onOverScrolled%28int,%20int,%20boolean,%20boolean%29"相对=nofollow> onOverScrolled 代替 GestureDetector ：

@Override
protected void onOverScrolled (int scrollX, int scrollY, boolean clampedX, boolean clampedY) {
    if (scrollX > (getWidth() + THRESHOLD) && clampedX) {
        onSwipeLeft();
    }
    if (scrollX < - THRESHOLD && clampedX) {
        onSwipeRight();
    }
    super.onOverScrolled(scrollX, scrollY, clampedX, clampedY);
}

这并不认为你的内容是不正常滚动的横盘整理，但。

This does assume that your content is not normally scrollable sideways though.

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