SOLVED,解决方案在下面。
我想将Webview中的导航按钮替换为2个滑动手势-左和右滑动。这个Android: How to handle right to left swipe gestures链接确实帮助了我,但我遇到了问题-实现此代码后,我无法在Webview活动中点击链接/或滚动加载的网页(我已经使用了可能答案中的第一个答案)。
然后我发现在这个问题的另一个答案是类似的东西-如何在listview中滚动-https://stackoverflow.com/a/20005481/3272449,但我无法让它运行.在logcat中,我得到了以下调试信息:http://s27.postimg.org/5qfipgi1v/message.png
这是我的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):
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
如何使左右滑动、垂直滚动和点击链接同时工作?
解决方案:同样的问题:Fling Gesture and Webview in Android
1条答案
按热度按时间zf2sa74q1#
我对
GestureDetector
不够熟悉,无法可靠地诊断您的问题。您可以尝试克隆事件:如果无法做到这一点,另一种方法是使用onOverScrolled而不是
GestureDetector
:这确实假设您的内容通常不能横向滚动。