如何同步容器内动态水平滚动视图的滚动视图位置? [英] How do I synchronize scrollview positions of dynamic horizontal scroll views inside a container?
本文介绍了如何同步容器内动态水平滚动视图的滚动视图位置?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在我的一项活动中有一个父容器，它调用它的子容器，其中包含一个作为对象之一的水平滚动视图.有点像回收视图，其中放置了行对象，其中有一个由水平滚动视图组成的公共行/项目布局.
我的目标是同步水平滚动视图的位置，这样，当我在其中一个对象上从位置 1 水平滚动到位置 2 时，包含水平滚动视图的所有其他项目都会从位置 1 更新到位置 2.
这是我的主要容器代码:(活动代码)
for (int index = 0; index 其中容器是包含以下布局的布局，因为它是子布局:(上面的代码迭代此布局以生成后续行)
<线性布局android:layout_width="match_parent"android:layout_height="wrap_content"机器人:方向=垂直"><相对布局android:layout_width="match_parent"机器人:背景=#232527"android:layout_marginStart="16dp"android:layout_marginEnd="16dp"android:layout_height="109dp"><图像视图android:id="@+id/roomDefaultIcon"android:layout_width="116dp"android:layout_height="82dp"android:src="@drawable/75"android:contentDescription="@string/default_room_icon_content_description"/><线性布局android:id="@+id/titleLayout"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical|center"android:layout_toEndOf="@id/roomDefaultIcon"android:layout_marginStart="16dp"机器人:方向=垂直"><文本视图android:id="@+id/roomNameLabel"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textColor="@color/white"android:layout_marginTop="20dp"android:textStyle="粗体"android:textSize="14sp"android:text="@string/tech_room"/><文本视图android:id="@+id/roomInfoLabel"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textColor="@color/TextInfoColor"机器人:可见性=消失"android:text="(42 人)"/></LinearLayout><水平滚动视图android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_below="@+id/roomDefaultIcon"android:id="@+id/horizontal_timebar_view"android:fillViewport="true"><com.roombooking.androidview.TimeBarViewandroid:id="@+id/mainTimeBarView"android:layout_width="wrap_content"android:layout_height="50dp"机器人:方向=水平"><Button android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="按钮一"机器人:可见性=隐形"/><Button android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="按钮二"机器人:可见性=隐形"/><Button android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="按钮三"机器人:可见性=隐形"/><Button android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="按钮四"机器人:可见性=隐形"/></com.roombooking.androidview.TimeBarView></HorizontalScrollView></RelativeLayout></LinearLayout><视图切换器android:id="@+id/modeSwitcher"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:inAnimation="@animator/fadein"android:outAnimation="@animator/fadeout"><线性布局android:id="@+id/normalMode"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_gravity="center_vertical"机器人:layout_marginBottom="10dp"android:layout_marginEnd="0dp"机器人:layout_marginRight="0dp"android:layout_marginTop="10dp"机器人:方向=水平"机器人:可见性=可见"android:weightSum="9" ><按钮android:id="@+id/bookNowButton"android:layout_width="100dp"android:layout_height="wrap_content"机器人:layout_gravity="中心"机器人:layout_weight="3"android:layout_marginStart="10dp"android:background="@drawable/button_background"机器人:焦点=真"android:text="@string/book_now"android:textColor="@android:color/white"android:layout_marginLeft="10dp"/><文本视图android:id="@+id/roomStatusLabel"android:layout_width="0dp"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:layout_marginLeft="20dp"android:layout_marginStart="20dp"机器人:layout_weight="5"android:minWidth="100dp"工具:文本=<状态>"/><按钮android:id="@+id/日历按钮"android:layout_width="24dp"android:layout_height="24dp"android:layout_gravity="center_vertical|开始"android:background="@drawable/calendar_small_grey"android:focusable="true"/></LinearLayout><线性布局android:id="@+id/bookingMode"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_gravity="center_vertical"机器人:重力=center_vertical"机器人:方向=垂直"android:paddingBottom="8dp"><图像按钮android:id="@+id/cancelButton"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="顶部|结束"android:layout_marginEnd="10dp"机器人:layout_marginRight="10dp"android:layout_marginTop="10dp"android:background="@drawable/close_button_states"android:contentDescription="@string/cancel_reservation"/><com.roombooking.android.view.CustomTimeSpanPicker2android:id="@+id/timeSpanPicker2"android:layout_width="wrap_content"android:layout_height="wrap_content"机器人:layout_gravity="中心"android:layout_marginBottom="16dp"/><自动完成文本视图android:id="@+id/autoCompleteTextView1"android:layout_width="230dp"android:layout_height="wrap_content"机器人:layout_gravity="中心"机器人:layout_marginBottom="10dp"android:layout_marginLeft="10dp"机器人:layout_marginRight="10dp"android:layout_marginTop="10dp"android:completionHint="你的名字"机器人:完成阈值=2"android:hint="@string/hint_your_name"android:imeOptions="actionDone"android:inputType="textCapWords|textFilter"机器人:线=1"机器人:maxLines =1"android:textColor="@color/button_color"android:textColorHint="@color/CalendarWeekTextColor"/><文本视图机器人:layout_gravity="中心"android:id="@+id/hintText"android:layout_width="wrap_content"android:layout_height="wrap_content"机器人:可见性=消失"android:text="@string/hintText"android:textColor="@color/CalendarWeekTextColor"/><按钮android:id="@+id/reserveButton"android:layout_width="wrap_content"android:layout_height="wrap_content"机器人:layout_gravity="中心"机器人:layout_marginBottom="10dp"android:layout_marginTop="10dp"android:background="@drawable/button_background"机器人:焦点=真"android:text="@string/button_reserve"android:textColor="@android:color/white"/><文本视图android:id="@+id/newRoomStatusLabel"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical|开始"android:layout_marginLeft="20dp"android:layout_marginStart="20dp"机器人:layout_weight="5"android:textColor="@android:color/black"android:minWidth="100dp"/><按钮android:id="@+id/newCalendarButton"android:layout_width="24dp"android:layout_height="24dp"android:layout_gravity="center_vertical|end"android:background="@drawable/calendar_small_grey"android:focusable="true"/></LinearLayout></ViewSwitcher></LinearLayout>我的焦点是包含时间条的 HorizontalScrollView，其位置为 1 到 10.例如，如果我滚动到位置 5，接下来的后续行的滚动条位置也应为 5，但我无法同步他们.知道我的代码中可能缺少什么吗?仅供参考，这里是 LobbyReservationRowView 类代码片段:
公共类 LobbyReservationRowView 扩展 FrameLayout 实现OnClickListener, OnItemClickListener, HorizontalScrollView.OnScrollChangeListener {@BindView(R.id.horizontal_timebar_view)HorizontalScrollView mHorizontalTimeBarView;@覆盖public void onScrollChange(View v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {mHorizontalTimeBarView.scrollTo(mHorizontalTimeBarView.getScrollX(),0);}}如果需要，很高兴分享整个示例项目
解决方案
你可以通过
I have a parent container in one of my activities which make a call to it's child containers consisting of a horizontal scrollview as one of the objects. Sort of like a recyclerview with row objects placed inside where there is a common row/item layout consisting of a horizontal scroll view.
My objective is to sync the positions of the horizontalscrollview such that, when i am scrolling horizontally on one of the objects from position 1 to position 2, all the other items containing horizontal scrollview get updated from position 1 to position 2.
Here's my main container code: (Activity code)
for (int index = 0; index < roomCount; index++) {
Room r2 = ((LobbyReservationRowView) container.getChildAt(index))
.getRoom();
// Log.d("Lobby", "sorting: " + r.getName() + ":" + r.isFree() +
// " -- " + r2.getName() + ":" + r2.isFree());
if (r.equals(r2)) {
Log.d("LobbyActivity", "duplicate room -- " + r.getEmail());
// XXX: minor logic error; same room
// someone else requested also an update, and we got rooms twice
container.removeViewAt(index);
container.addView(v, index);
added = true;
break;
} else if (roomCmp.compare(r, r2) < 0) {
container.addView(v, index);
added = true;
break;
}
}
if (!added) {
container.addView(v);
}
where container is the layout containing the following layout as it's child:( the above code iterates over this layout to generate subsequent rows)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="vertical"
android:gravity="center_vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:background="#232527"
android:layout_marginStart="16dp"
android:layout_marginEnd="16dp"
android:layout_height="109dp">
<ImageView
android:id="@+id/roomDefaultIcon"
android:layout_width="116dp"
android:layout_height="82dp"
android:src="@drawable/75"
android:contentDescription="@string/default_room_icon_content_description" />
<LinearLayout
android:id="@+id/titleLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|center"
android:layout_toEndOf="@id/roomDefaultIcon"
android:layout_marginStart="16dp"
android:orientation="vertical">
<TextView
android:id="@+id/roomNameLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/white"
android:layout_marginTop="20dp"
android:textStyle="bold"
android:textSize="14sp"
android:text="@string/tech_room" />
<TextView
android:id="@+id/roomInfoLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/TextInfoColor"
android:visibility="gone"
android:text="(42 persons)" />
</LinearLayout>
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/roomDefaultIcon"
android:id="@+id/horizontal_timebar_view"
android:fillViewport="true">
<com.roombooking.androidview.TimeBarView
android:id="@+id/mainTimeBarView"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:orientation="horizontal"
>
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button One"
android:visibility="invisible"/>
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button Two"
android:visibility="invisible"/>
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button Three"
android:visibility="invisible"/>
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button Four"
android:visibility="invisible"/>
</com.roombooking.androidview.TimeBarView>
</HorizontalScrollView>
</RelativeLayout>
</LinearLayout>
<ViewSwitcher
android:id="@+id/modeSwitcher"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:inAnimation="@animator/fadein"
android:outAnimation="@animator/fadeout">
<LinearLayout
android:id="@+id/normalMode"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginBottom="10dp"
android:layout_marginEnd="0dp"
android:layout_marginRight="0dp"
android:layout_marginTop="10dp"
android:orientation="horizontal"
android:visibility="visible"
android:weightSum="9" >
<Button
android:id="@+id/bookNowButton"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="3"
android:layout_marginStart="10dp"
android:background="@drawable/button_background"
android:focusable="true"
android:text="@string/book_now"
android:textColor="@android:color/white"
android:layout_marginLeft="10dp" />
<TextView
android:id="@+id/roomStatusLabel"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="20dp"
android:layout_marginStart="20dp"
android:layout_weight="5"
android:minWidth="100dp"
tools:text="<status>" />
<Button
android:id="@+id/calendarButton"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_gravity="center_vertical|start"
android:background="@drawable/calendar_small_grey"
android:focusable="true" />
</LinearLayout>
<LinearLayout
android:id="@+id/bookingMode"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:gravity="center_vertical"
android:orientation="vertical"
android:paddingBottom="8dp">
<ImageButton
android:id="@+id/cancelButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top|end"
android:layout_marginEnd="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp"
android:background="@drawable/close_button_states"
android:contentDescription="@string/cancel_reservation" />
<com.roombooking.android.view.CustomTimeSpanPicker2
android:id="@+id/timeSpanPicker2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="16dp" />
<AutoCompleteTextView
android:id="@+id/autoCompleteTextView1"
android:layout_width="230dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp"
android:completionHint="Your name"
android:completionThreshold="2"
android:hint="@string/hint_your_name"
android:imeOptions="actionDone"
android:inputType="textCapWords|textFilter"
android:lines="1"
android:maxLines="1"
android:textColor="@color/button_color"
android:textColorHint="@color/CalendarWeekTextColor"/>
<TextView
android:layout_gravity="center"
android:id="@+id/hintText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone"
android:text="@string/hintText"
android:textColor="@color/CalendarWeekTextColor"/>
<Button
android:id="@+id/reserveButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="10dp"
android:layout_marginTop="10dp"
android:background="@drawable/button_background"
android:focusable="true"
android:text="@string/button_reserve"
android:textColor="@android:color/white" />
<TextView
android:id="@+id/newRoomStatusLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|start"
android:layout_marginLeft="20dp"
android:layout_marginStart="20dp"
android:layout_weight="5"
android:textColor="@android:color/black"
android:minWidth="100dp"
/>
<Button
android:id="@+id/newCalendarButton"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_gravity="center_vertical|end"
android:background="@drawable/calendar_small_grey"
android:focusable="true" />
</LinearLayout>
</ViewSwitcher>
</LinearLayout>
My point of focus is the HorizontalScrollView containing the timebar, which has positions 1 to 10. If I scroll to position 5 for example, the next subsequent rows should have the scrollbar position at 5 aswell, but I am not able to sync them. Any idea what could be missing from my code? Just for reference , here's LobbyReservationRowView class code snippet:
public class LobbyReservationRowView extends FrameLayout implements
OnClickListener, OnItemClickListener, HorizontalScrollView.OnScrollChangeListener {
@BindView(R.id.horizontal_timebar_view)
HorizontalScrollView mHorizontalTimeBarView;
@Override
public void onScrollChange(View v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
mHorizontalTimeBarView.scrollTo(mHorizontalTimeBarView.getScrollX(),0);
}
}
Happy to share the entire sample project if need be
解决方案
You can achieve the synchronized scrolling with LiveData from Android Architecture Components. Declare an interface
interface LobbyReservationHSVListener{
void updateScrollPosition(int scrollX);
}
Declare a MutableLiveData variable and implement the LobbyReservationHSVListener in your activity like below:
public class HorizontalActivity extends AppCompatActivity implements
LobbyReservationHSVListener {
MutableLiveData<Integer> hsvPosition = new MutableLiveData<Integer>();
@Override
public void updateScrollPosition(int scrollX) {
hsvPosition.setValue(scrollX);
}
}
In onCreate in your activity start observing the MutableLiveData you declared. Whenever its value changes, loop through all children views of container and update their scroll positions.
hsvPosition.observe(this,new Observer<Integer>() {
@Override
public void onChanged(Integer integer) {
for(int i=0; i<container.getChildCount();i++){
HorizontalScrollView hsv = container.getChildAt(i).findViewById(R.id.horizontal_timebar_view);
hsv.smoothScrollTo(integer,0);
}
}
});
In your LobbyReservationRowView create a function to set the LobbyReservationHSVListener object and call updateScrollPosition whenever scroll changes.
public class LobbyReservationRowView extends FrameLayout implements
OnClickListener, OnItemClickListener, HorizontalScrollView.OnScrollChangeListener {
private LobbyReservationHSVListener hsvUpdateListener;
@BindView(R.id.horizontal_timebar_view)
HorizontalScrollView mHorizontalTimeBarView;
public void setHSVUpdateListener(LobbyReservationHSVListener hsvUpdateListener){
this.hsvUpdateListener = hsvUpdateListener;
}
@Override
public void onScrollChange(View v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
hsvUpdateListener.updateScrollPosition(scrollX);
}
}
Don't forget to call setHSVUpdateListener(this) on your LobbyReservationRowView object whenever adding it to your container
You should get something like this:
这篇关于如何同步容器内动态水平滚动视图的滚动视图位置?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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