RecycleView realizes item sideslip deletion and drag
- 2021-12-09 10:14:37
- OfStack
In this paper, we share the specific code of RecycleView to realize item sideslip deletion and drag for your reference. The specific contents are as follows
1. Add dependencies
// Side slip deletion dependency
implementation 'com.yanzhenjie.recyclerview:support:1.3.2'
2. Layout files
The controls used here are: com. yanzhenjie. recyclerview. SwipeRecyclerView
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<com.yanzhenjie.recyclerview.SwipeRecyclerView
android:id="@+id/srv"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
3. Code implementation
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.DividerItemDecoration;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import com.google.gson.Gson;
import com.yanzhenjie.recyclerview.SwipeRecyclerView;
import com.yanzhenjie.recyclerview.touch.OnItemMoveListener;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class MainActivity extends AppCompatActivity {
SwipeRecyclerView srv; // Control
List<JavaBean.DataBean> dataAll = new ArrayList<>(); // A collection of stored data
MyAdapter myAdapter; // Adapter
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initialize control
initView();
// Get data , Data can be simulated , Not on display
initData();
// Monitor events
initListener();
}
// TODO 3 Monitor events
private void initListener() {
srv.setItemViewSwipeEnabled(true); // Sideslip deletion Default off
srv.setLongPressDragEnabled(true); // Drag-and-drop sort Default off
// Drag-and-drop monitor
srv.setOnItemMoveListener(new OnItemMoveListener() {
// This method is used in the Item Called when the swap position is dragged and dropped.
@Override
public boolean onItemMove(RecyclerView.ViewHolder srcHolder, RecyclerView.ViewHolder targetHolder) {
// No. 1 1 Parameters are to be exchanged for Item , No. 2 Of the target location Item .
int adapterPosition = srcHolder.getAdapterPosition();
int adapterPosition1 = targetHolder.getAdapterPosition();
// swap Exchange data and update adapter .
Collections.swap(dataAll, adapterPosition, adapterPosition1);
myAdapter.notifyItemMoved(adapterPosition, adapterPosition1);
return true;// Return true , indicating that the data exchange is successful, ItemView You can swap places.
}
// This method is used in the Item Called on sideslip deletion.
@Override
public void onItemDismiss(RecyclerView.ViewHolder srcHolder) {
// Removes the Item Corresponding data, and refresh Adapter .
int position = srcHolder.getAdapterPosition();
dataAll.remove(position);
myAdapter.notifyItemRemoved(position);
}
});
}
//TODO 2 Get data
private void initData() {
// The data obtained by callback here
OkgoData.getInstance().getDataByOkGo(new DataCallBack() {
@Override
public void getDataJson(String json) {
List<JavaBean.DataBean> data = new Gson().fromJson(json, JavaBean.class).getData();
dataAll.clear();
dataAll.addAll(data);
myAdapter.setNewData(dataAll);
myAdapter.notifyDataSetChanged(); // Adapter notification update
}
});
}
//TODO 1 Initialize control
private void initView() {
srv = findViewById(R.id.srv); // Find the control
// Add an underline
DividerItemDecoration decoration = new DividerItemDecoration(this, DividerItemDecoration.VERTICAL);
srv.addItemDecoration(decoration);
// Add adapter
myAdapter = new MyAdapter(R.layout.layout_adapter_item, dataAll);
srv.setAdapter(myAdapter);
// Add layout management It must be added or it cannot be displayed
LinearLayoutManager layoutManager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
srv.setLayoutManager(layoutManager);
}
}
For other functions, please refer to: RecycleView sideslip deletion and drag