我正在使用此代码,它完全按照我的意愿工作.但是我必须在双击时实现另一个功能,并且想要禁用双击缩放(但保持缩放缩放功能).
webView.getSettings().setLoadWithOverviewmode(true); webView.getSettings().setUseWideViewPort(true); webView.getSettings().setLayoutAlgorithm(LayoutAlgorithm.NORMAL); webView.getSettings().setBuiltInZoomControls(true); webView.getSettings().setSupportZoom(true); webView.setInitialScale(1);
试图手动计算比例,没有运气(这感觉很复杂).
Disable Double Tap Zoom/Unzoom on a webview
Android Webview – Webpage should fit the device screen
有没有办法使用setUseWideViewPort和Zoomcontrolls但只禁用或覆盖双击缩放？
解决方法
最好的解决方案,只需从MyWebView扩展您的WebView
public class HelpWebView extends WebView {
private GestureDetector gestureDetector;
private AtomicBoolean mPreventAction = new AtomicBoolean(false);
private AtomicLong mPreventActionTime = new AtomicLong(0);
public HelpWebView(Context context) {
super(context);
gestureDetector = new GestureDetector(context,new GestureListener());
}
public HelpWebView(Context context,AttributeSet attrs) {
super(context,attrs);
gestureDetector = new GestureDetector(context,AttributeSet attrs,int defStyle) {
super(context,attrs,defStyle);
gestureDetector = new GestureDetector(context,int defStyle,boolean privateBrowsing) {
super(context,defStyle,privateBrowsing);
gestureDetector = new GestureDetector(context,new GestureListener());
}
@Override
public boolean onTouchEvent(MotionEvent event) {
int index = (event.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK) >> MotionEvent.ACTION_POINTER_INDEX_SHIFT;
int pointId = event.getPointerId(index);
// just use one(first) finger,prevent double tap with two and more fingers
if (pointId == 0){
gestureDetector.onTouchEvent(event);
if (mPreventAction.get()){
if (System.currentTimeMillis() - mPreventActionTime.get() > ViewConfiguration.getDoubleTapTimeout()){
mPreventAction.set(false);
} else {
return true;
}
}
return super.onTouchEvent(event);
} else {
return true;
}
}
private class GestureListener extends GestureDetector.SimpleOnGestureListener {
@Override
public boolean onDoubleTap(MotionEvent e) {
mPreventAction.set(true);
mPreventActionTime.set(System.currentTimeMillis());
return true;
}
@Override
public boolean onDoubleTapEvent(MotionEvent e) {
mPreventAction.set(true);
mPreventActionTime.set(System.currentTimeMillis());
return true;
}
}
}
