我正在使用这段代码,它完全符合我的要求。但是我必须在双击时实现另一个功能,并且想禁用双击缩放(但保留捏合缩放功能)。
webView.getSettings().setLoadWithOverviewMode(true);
webView.getSettings().setUseWideViewPort(true);
webView.getSettings().setLayoutAlgorithm(LayoutAlgorithm.NORMAL);
webView.getSettings().setBuiltInZoomControls(true);
webView.getSettings().setSupportZoom(true);
webView.setInitialScale(1);
尝试手动计算比例,但没有成功(对此感觉很复杂)。 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 但仅禁用或覆盖双击缩放?
最佳答案
最佳解决方案,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, new GestureListener());
}
public HelpWebView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
gestureDetector = new GestureDetector(context, new GestureListener());
}
public HelpWebView(Context context, AttributeSet attrs, int defStyle, boolean privateBrowsing) {
super(context, attrs, 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;
}
}
}
关于Android WebView 使用 setWideViewPort,禁用双击缩放但保持捏缩放?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10330296/