我正在将网站加载到android webview中,我想提高滚动性能。换句话说,我想为用户提供更快,更流畅的滚动。有任何想法吗? 预先感谢
答案 0 :(得分:0)
您是否声明要在应用程序清单中进行软件渲染(或通过设置WebView的图层类型)?也许尝试硬件模式
webView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
答案 1 :(得分:0)
将WebView嵌入到HorizontalScrollView内的片段中时,我还遇到了滚动缓慢,滚动不稳定的情况,但是在其他情况下也似乎发生了这种情况。经过数天的反复试验,这似乎是可行的解决方案。关键部分是OnTouchListener;我不认为WebView设置那么重要。这是违反直觉的,但是您必须明确告诉WebView滚动...似乎是一个Android错误。
WebView myWebView;
VelocityTracker mVelocityTracker;
myWebView.setOnTouchListener(new WebViewOnTouchListener());
private class WebViewOnTouchListener implements View.OnTouchListener {
float currY = 0;
float yVeloc = 0f;
WebView localWebView = myWebView;
@Override
public boolean onTouch(View v, MotionEvent event) {
int index = event.getActionIndex();
int action = event.getActionMasked();
int pointerId = event.getPointerId(index);
switch(action){
case MotionEvent.ACTION_DOWN:
if (mVelocityTracker == null) {
// Retrieve a new VelocityTracker object to watch the velocity
// of a motion.
mVelocityTracker = VelocityTracker.obtain();
} else {
// Reset the velocity tracker back to its initial state.
mVelocityTracker.clear();
}
mVelocityTracker.addMovement(event);
currY = event.getY();
break;
case MotionEvent.ACTION_MOVE:
mVelocityTracker.addMovement(event);
mVelocityTracker.computeCurrentVelocity(1000);
yVeloc = mVelocityTracker.getYVelocity(pointerId);
float y = event.getY();
localWebView.scrollBy(0, (int) (currY - y));
currY = y;
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
localWebView.flingScroll(0, -(int)yVeloc);
break;
}
return true;
}
}