问题描述
在我的RecyclerView中,有很多对象,包括Switch.如果我知道要切换哪个开关的索引(位置),如何在RecyclerView中切换其中一个开关?
In my RecyclerView, there's plenty of objects, including Switch. How do I toggle one of the switch in the RecyclerView, if I know the index (location) of which switch I want to toggle?
以防万一,这是我的RecyclerView的内容
Just in case, here's the content of my RecyclerView
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/cvExpenses"
android:layout_height="wrap_content"
android:layout_width="match_parent"
card_view:cardCornerRadius="5dp"
android:layout_margin="5dp"
card_view:cardBackgroundColor="#009dde"
>
<LinearLayout
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="4dip">
<TextView
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="0"
android:visibility="gone"
android:id="@+id/tvGuestID" />
<TextView
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="0.7"
android:id="@+id/tvGuestName"
android:textColor="#ffffff" />
<Switch
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="0.3"
android:id="@+id/swCheckIn"
android:clickable="true"
android:textOff="no"
android:textOn="yes" />
</LinearLayout>
</android.support.v7.widget.CardView>
这是上面的视图在其中加载的xml
and here's the xml in which the view above is loaded
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
android:background="#ff26b4e9">
<android.support.v7.widget.RecyclerView
android:id="@+id/rvGuestList"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/svSearchGuest" />
</RelativeLayout>
推荐答案
在列表视图中,您可能刚刚完成((Switch)findViewById(R.id.swCheckIn)).toggle();
In a listview you could have just done((Switch)findViewById(R.id.swCheckIn)).toggle();
但是在RecyclerView中,您必须使用ViewHolders.假设您已设置ViewHolder(如果没有,建议您查看RecyclerView教程),则可以在onBindViewHolder中执行以下操作:
but in a RecyclerView you have to use ViewHolders. Assuming you have your ViewHolder set up (if you don't, I recommend looking up a RecyclerView tutorial), you'd do the following in onBindViewHolder:
@Override
public void onBindViewHolder(VH viewHolder, int position)
...
if (viewIsToBetoggled(position)) {
viewHolder.swCheckin.toggle();
}
...
}
这篇关于以编程方式在recyclerview中拨动开关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!