所以我正在使用 Sliding Up Panel Library在我的应用程序中,我正在尝试在滑动面板内实现 ScrollView
。由于滑动面板和 ScrollView 都是由垂直滚动条控制的,这给我带来了一些问题。
一旦面板一直向上滑动,并且当 ScrollView 滚动到顶部时,我已经通过切换面板的拖动 View 部分地使其工作。
我现在面临的问题是,当将面板滚动到顶部时,滚动不会像在 Google map 中那样转移到 ScrollView。 有点难以解释,请看这里的视频: www.youtube.com/watch?v=9MUsmQzusX8&feature=youtu.be
这是面板幻灯片监听器:
...
slidePanel.setEnableDragViewTouchEvents(true);
slidePanel.setPanelSlideListener(new SlidingUpPanelLayout.PanelSlideListener() {
@Override
public void onPanelSlide(View panel, float slideOffset) {
// Change the dragview to panelheader when panel is fully expanded
// I'm doing this here instead of in onPanelExpanded,
// because onPanelExpanded first gets called once scroll
// is released.
if (slideOffset <= 0) {
slidePanel.setDragView(layoutPanelTop);
}
// If the panel is not fully expanded set the whole
// panel as dragview
else if(slideOffset > 0) {
slidePanel.setDragView(layoutPanel);
}
}
}
@Override
public void onPanelExpanded(View panel) {
// layout.setDragView(layoutPanelTop);
panelCollapsed = false;
panelExpanded = true;
panelAnchored = false;
Log.v("TAG, "panelExpanded");
}
@Override
public void onPanelCollapsed(View panel) {
slidePanel.setDragView(layoutPanel);
panelCollapsed = true;
panelExpanded = false;
panelAnchored = false;
Log.v(TAG, "panelCollapsed");
}
@Override
public void onPanelAnchored(View panel) {
slidePanel.setDragView(layoutPanel);
panelCollapsed = false;
panelExpanded = false;
panelAnchored = true;
Log.v(TAG, "panelAnchored");
}
});
而且我已经通过扩展 scrollview 成功地创建了一个完全可用的 scrollview 监听器,它可以检测滚动方向以及 onDown 和 onUp 运动事件:
private boolean atScrollViewTop = false;
@Override
public void onScrollChanged(int scrollY) {
scrollY = Math.min(mMaxScrollY, scrollY);
if (scrollY <= 0) {
Log.v("myTag", "You at scrollview top");
atScrollViewTop = true;
} else {
atScrollViewTop = false;
}
mScrollSettleHandler.onScroll(scrollY);
switch (mState) {
case STATE_SCROLL_UP:
if (panelExpanded && atScrollViewTop) {
slidePanel.setDragView(layoutPanel);
} else {
slidePanel.setDragView(layoutPanelTop);
}
Log.v("myTag", "scrolling up");
break;
case STATE_SCROLL_DOWN:
slidePanel.setDragView(layoutPanelTop);
Log.v("myTag", "scrolling down");
break;
}
}
@Override
public void onDownMotionEvent() {
}
@Override
public void onUpOrCancelMotionEvent() {
}
过去两天我一直在为此苦苦挣扎..所以真的希望至少能得到一些指导。首先十分感谢。问候雅各布·哈特格。
最佳答案
抱歉延迟..我找到了解决方案。
image = (ImageView) findViewById(R.id.image); //Layout to slide
SlidingUpPanelLayout layout = (SlidingUpPanelLayout)
findViewById(R.id.sliding_layout);
layout.setDragView(image);
/*This method sets the layout to be used only
in the sliding panel, while all layouts children
are able to perform other functions such as scrolling */
这是布局
<..SlidingUpPanelLayout
android:id="@+id/sliding_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center" />
<LinearLayout
android:id="@+id/slide_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageView
android:id="@+id/image"
android:layout_width="match_parent"
android:layout_height="35dp"
android:background="@drawable/ec_image"/>
<!-- FINALLY SCROLLVIEW -->
<ScrollView .... />
希望有用。
关于java - Transfer scroll event from sliding view to ScrollView - Sliding panel with ScrollView 像谷歌地图,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19619964/