您可以在主网站上找到更详细的文档：
https://advancedrecyclerview.h6ah4i.com
以下内容是从文档中的swipeable 页面复制而来的：
步骤 1. 使适配器支持稳定的 ID
这一步非常重要。如果适配器没有返回稳定且唯一的 ID，则会导致一些奇怪的行为（错误的动画、NPE 等......）
class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
MyAdapter() {
setHasStableIds(true);
}
@Override
public long getItemId(int position) {
// requires static value, it means need to keep the same value
// even if the item position has been changed.
return mItems.get(position).getId();
}
}
步骤 2. 修改项目视图的布局文件
用另一个FrameLayout 包装内容视图，该@+id/container ID 为。
<!-- for itemView -->
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="56dp">
<!-- Content View(s) -->
<TextView
android:id="@android:id/text1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"/>
</FrameLayout>
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<!-- for itemView -->
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="56dp">
<!-- for getSwipeableContainerView() -->
<FrameLayout
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- Content View(s) -->
<TextView
android:id="@android:id/text1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"/>
</FrameLayout>
</FrameLayout>
第三步，修改ViewHolder
- 将父类更改为
AbstractSwipeableItemViewHolder。
- 实现
getSwipeableContainerView() 方法。
注意：AbstractSwipeableItemViewHolder 类是一个便利类，它实现了 `SwipeableItemViewHolder 的样板方法。
class MyAdapter ... {
static class MyViewHolder extends RecyclerView.ViewHolder {
TextView textView;
MyViewHolder(View v) {
super(v);
textView = (TextView) v.findViewById(android.R.id.text1);
}
}
...
}
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class MyAdapter ... {
static class MyViewHolder extends AbstractSwipeableItemViewHolder {
TextView textView;
FrameLayout containerView;
public MyViewHolder(View v) {
super(v);
textView = (TextView) v.findViewById(android.R.id.text1);
containerView = (FrameLayout) v.findViewById(R.id.container);
}
@Override
public View getSwipeableContainerView() {
return containerView;
}
}
}
第四步：实现SwipeableItemAdapter接口
class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
...
}
⏬⏬⏬
class MyAdapter
extends RecyclerView.Adapter<MyAdapter.MyViewHolder>
implements SwipeableItemAdapter<MyAdapter.MyViewHolder> {
@Override
public int onGetSwipeReactionType(MyViewHolder holder, int position, int x, int y) {
// Make swipeable to LEFT direction
return Swipeable.REACTION_CAN_SWIPE_LEFT;
}
@Override
public void onSetSwipeBackground(MyViewHolder holder, int position, int type) {
// You can set background color/resource to holder.itemView.
// The argument "type" can be one of the followings;
// - Swipeable.DRAWABLE_SWIPE_NEUTRAL_BACKGROUND
// - Swipeable.DRAWABLE_SWIPE_LEFT_BACKGROUND
// (- Swipeable.DRAWABLE_SWIPE_UP_BACKGROUND)
// (- Swipeable.DRAWABLE_SWIPE_RIGHT_BACKGROUND)
// (- Swipeable.DRAWABLE_SWIPE_DOWN_BACKGROUND)
if (type == Swipeable.DRAWABLE_SWIPE_LEFT_BACKGROUND) {
holder.itemView.setBackgroundColor(Color.YELLOW);
} else {
holder.itemView.setBackgroundColor(Color.TRANSPARENT);
}
}
@Override
public SwipeResultAction onSwipeItem(MyViewHolder holder, int position, int result) {
// Return sub class of the SwipeResultAction.
//
// Available base (abstract) classes are;
// - SwipeResultActionDefault
// - SwipeResultActionMoveToSwipedDirection
// - SwipeResultActionRemoveItem
// - SwipeResultActionDoNothing
// The argument "result" can be one of the followings;
//
// - Swipeable.RESULT_CANCELED
// - Swipeable.RESULT_SWIPED_LEFT
// (- Swipeable.RESULT_SWIPED_UP)
// (- Swipeable.RESULT_SWIPED_RIGHT)
// (- Swipeable.RESULT_SWIPED_DOWN)
if (result == Swipeable.RESULT_LEFT) {
return new SwipeResultActionMoveToSwipedDirection() {
// Optionally, you can override these three methods
// - void onPerformAction()
// - void onSlideAnimationEnd()
// - void onCleanUp()
};
} else {
return new SwipeResultActionDoNothing();
}
}
}
第五步，修改RecyclerView的初始化流程
在您的Activity / Fragment 中添加一些额外的初始化过程。
- 实例化
RecyclerViewSwipeManager。
- 创建一个包装好的适配器并将其设置为
RecyclerView。
- 将
RecyclerView 附加到RecyclerViewSwipeManager。
void onCreate() {
...
RecyclerView recyclerView = findViewById(R.id.recyclerView);
MyAdapter adapter = new MyAdapter();
recyclerView.setAdapter(adapter);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
}
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void onCreate() {
...
RecyclerView recyclerView = findViewById(R.id.recyclerView);
RecyclerViewSwipeManager swipeManager = new RecyclerViewSwipeManager();
MyAdapter adapter = new MyAdapter();
RecyclerView.Adapter wrappedAdapter = swipeManager.createWrappedAdapter(adapter);
recyclerView.setAdapter(wrappedAdapter);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
// disable change animations
((SimpleItemAnimator) mRecyclerView.getItemAnimator()).setSupportsChangeAnimations(false);
swipeManager.attachRecyclerView(recyclerView);
}
希望我的回答对你有帮助。