Android中RecyclerView的item中控件的点击事件添加删除一行、上移下移一行的代码实现

Demo展示图片

布局代码

  注：为了显示水波纹效果，minSdkVersion设置为21。代码没有适配5.0以下，如果要适配5.0以下，可参考：Android开发中的水波纹效果实现 http://blog.csdn.net/zxc514257857/article/details/73200900

// (layout)activity_main.xml
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.text.recyclerviewdemo.MainActivity">

<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:overScrollMode="never"
android:scrollbars="none"/>

</RelativeLayout>
----------------------------------------------------------------------------------------
// (layout)recyclerview_item.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/recyclerview_bg">

<TextView
android:id="@+id/num"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
android:layout_margin="10dp"
android:textColor="#fff"/>

<TextView
android:id="@+id/data"
android:layout_toLeftOf="@+id/ll"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:layout_marginRight="50dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
android:textColor="@color/colorPrimaryDark"/>

<LinearLayout
android:id="@+id/ll"
android:layout_alignParentRight="true"
android:layout_width="wrap_content"
<
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span class="hljs-attribute" style="color:rgb(102,0,102);">android:layout_height="wrap_content"
android:orientation="horizontal">

<TextView
android:id="@+id/add"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="添加"
android:textSize="20sp"
android:layout_margin="10dp"
android:background="@drawable/ripple_bg"
android:clickable="true"
android:textColor="#fff"/>

<TextView
android:id="@+id/del"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="删除"
android:textSize="20sp"
android:layout_margin="10dp"
android:background="@drawable/ripple_bg"
android:clickable="true"
android:textColor="#fff"/>

<TextView
android:id="@+id/up"
android:layout_width="35dp"
android:layout_height="wrap_content"
android:text="↑"
android:textSize="20sp"
android:gravity="center"
android:layout_margin="10dp"
android:background="@drawable/ripple_bg"
android:clickable="true"
android:textColor="#fff"/>

<TextView
android:id="@+id/down"
android:layout_width="35dp"
android:layout_height="wrap_content"
android:text="↓"
android:textSize="20sp"
android:gravity="center"
android:layout_margin="10dp"
android:background="@drawable/ripple_bg"
android:clickable="true"
android:textColor="#fff"/>

</LinearLayout>
</RelativeLayout>
----------------------------------------------------------------------------------------
// (layout)recyclerview_bg.xml
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="@color/colorAccent"/>
<stroke android:width="1dp" android:color="@color/colorPrimaryDark"/>
</shape>
</item>
</selector>
----------------------------------------------------------------------------------------
// (layout)ripple_bg.xml
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="@color/colorPrimaryDark">

</ripple>

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逻辑代码

  注：需在module中的dependencies节点下添加：

compile 'com.yanzhenjie:recyclerview-swipe:1.0.4'

1

// MyAdapter
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.yanzhenjie.recyclerview.swipe.SwipeMenuAdapter;
import java.util.List;

public class MyAdapter extends SwipeMenuAdapter<MyAdapter.MyViewHolder> {
private List<String> strList;
private OnItemClickListener mOnItemClickListener;

public MyAdapter(List<String> strList){
this.strList = strList;
}

public void setOnItemClickListener(OnItemClickListener onItemClickListener){
this.mOnItemClickListener = onItemClickListener;
}

@Override
public View onCreateContentView(ViewGroup parent, int viewType) {
return LayoutInflater.from(parent.getContext()).inflate(R.layout.recyclerview_item, parent, false);
}

@Override
public MyAdapter.MyViewHolder onCompatCreateViewHolder(View realContentView, int viewType) {
MyViewHolder myViewHolder = new MyViewHolder(realContentView);
myViewHolder.mOnItemClickListener = mOnItemClickListener;
return myViewHolder;
}

@Override
public void onBindViewHolder(MyAdapter.MyViewHolder holder, int position) {
holder.num.setText((position + 1) + "");
holder.data.setText(strList.get(position));
}

@Override
public int getItemCount() {
return strList == null ? 0 : strList.size();
}

class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
OnItemClickListener mOnItemClickListener;
TextView num;
TextView data;
TextView add;
TextView del;
TextView up;
TextView down;

public MyViewHolder(View itemView) {
super(itemView);
num = (TextView) itemView.findViewById(R.id.num);
data = (TextView) itemView.findViewById(R.id.data);
add = (TextView) itemView.findViewById(R.id.add);
del = (TextView) itemView.findViewById(R.id.del);
up = (TextView) itemView.findViewById(R.id.up);
down = (TextView) itemView.findViewById(R.id.down);
add.setOnClickListener(this);
del.setOnClickListener(this);
up.setOnClickListener(this);
down.setOnClickListener(this);
}

@Override
public void onClick(View v) {
if (mOnItemClickListener != null) {
mOnItemClickListener.onItemClick(getAdapterPosition() , v);
}
}
}
}
----------------------------------------------------------------------------------------
// OnItemClickListener
import android.view.View;

public interface OnItemClickListener {
void onItemClick(int position , View v);
}
----------------------------------------------------------------------------------------
// MainActivity
import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

private static final String TAG = "MainActivity";
private RecyclerView mRecyclerView;
private Context mContext = MainActivity.this;
private List<String> mStrList;
private MyAdapter mMyAdapter;
private int clickTime = 0;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initData();
}

public void initData(){
mStrList = new ArrayList<>();
for (int i = 0 ; i < 20 ; i++){
mStrList.add(i + "");
}
mRecyclerView = (RecyclerView) findViewById(R.id.recyclerview);

LinearLayoutManager linearLayoutManager = new LinearLayoutManager(mContext);
linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
mRecyclerView.setLayoutManager(linearLayoutManager);
mMyAdapter = new MyAdapter(mStrList);
// 设置item及item中控件的点击事件
mMyAdapter.setOnItemClickListener(onItemClickListener);
mRecyclerView.setAdapter(mMyAdapter);
}

/**
* Item点击监听
*/
private OnItemClickListener onItemClickListener = new OnItemClickListener() {
@Override
public void onItemClick(int position , View v) {
switch (v.getId()){
case R.id.add:
clickTime++;
Toast.makeText(mContext, "增:" + position, Toast.LENGTH_SHORT).show();
mStrList.add(position+ 1 , "增" + clickTime);
mMyAdapter.notifyDataSetChanged();
Log.i(TAG , "mStrList:" + mStrList.toString());
break;

case R.id.del:
Toast.makeText(mContext, "删:" + position, Toast.LENGTH_SHORT).show();
mStrList.remove(position);
mMyAdapter.notifyDataSetChanged();
break;

case R.id.up:
if(position == 0){
Toast.makeText(mContext, "已经在顶部,无法移动!:" + position, Toast.LENGTH_SHORT).show();
}else if(position > 0 && position <= mStrList.size()-1){
Toast.makeText(mContext, "上:" + position, Toast.LENGTH_SHORT).show();
swap(mStrList , position , position-1);
mMyAdapter.notifyDataSetChanged();
}
break;

case R.id.down:
if(position == mStrList.size()-1){
Toast.makeText(mContext, "已经在底部,无法移动!:" + position, Toast.LENGTH_SHORT).show();
}else if(position >= 0 && position < mStrList.size()-1){
Toast.makeText(mContext, "下:" + position, Toast.LENGTH_SHORT).show();
swap(mStrList , position , position+1);
mMyAdapter.notifyDataSetChanged();
}
break;
}
}
};

/**
* 集合中两个元素的交换操作
* @param list
* @param oldPosition
* @param newPosition
* @param <T>
*/
public static <T> void swap(List<T> list, int oldPosition, int newPosition){
if(null == list){
throw new IllegalStateException("The list can not be empty...");
}
T tempElement = list.get(oldPosition);

// 向前移动，前面的元素需要向后移动
if(oldPosition < newPosition){
for(int i = oldPosition; i < newPosition; i++){
list.set(i, list.get(i + 1));
}
list.set(newPosition, tempElement);
}
// 向后移动，后面的元素需要向前移动
if(oldPosition > newPosition){
for(int i = oldPosition; i > newPosition; i--){
list.set(i, list.get(i - 1));
}
list.set(newPosition, tempElement);
}
}
}

Demo下载请移步：http://download.csdn.net/detail/zxc514257857/9878510