Android RecycleView使用（CheckBox全选、反选、单选）

2023-09-25 05:31:05 55

本文实例为大家分享了CheckBox全选、反选、单选的具体代码，供大家参考，具体内容如下

MainActiivity

packagecom.bwie.day06;

importandroid.support.v7.app.AppCompatActivity;
importandroid.os.Bundle;
importandroid.support.v7.widget.LinearLayoutManager;
importandroid.support.v7.widget.RecyclerView;
importandroid.view.View;

importcom.bwie.day06.myadapter.MyAdapter;

publicclassMainActivityextendsAppCompatActivity{

privateMyAdaptermyAdapter;
privateLinearLayoutManagerlinearLayoutManager;

@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//初始化控件
RecyclerViewrecyclerView=(RecyclerView)findViewById(R.id.recyclerview);
//在加载数据之前配置
linearLayoutManager=newLinearLayoutManager(this);
recyclerView.setLayoutManager(linearLayoutManager);
//创建一个适配器
myAdapter=newMyAdapter();
recyclerView.setAdapter(myAdapter);


}

publicvoidbtnAll(Viewview){
myAdapter.All();
}

publicvoidbtnner(Viewview){
myAdapter.neverall();
}
}

Adapter

packagecom.bwie.day06.myadapter;

importandroid.support.v7.widget.RecyclerView;
importandroid.view.LayoutInflater;
importandroid.view.View;
importandroid.view.ViewGroup;
importandroid.widget.CheckBox;
importandroid.widget.TextView;

importcom.bwie.day06.R;

importjava.util.ArrayList;
importjava.util.HashMap;
importjava.util.Map;
importjava.util.Set;


publicclassMyAdapterextendsRecyclerView.Adapter{
//这个是checkbox的Hashmap集合
privatefinalHashMapmap;
//这个是数据集合
privatefinalArrayListlist;

publicMyAdapter(){
map=newHashMap<>();
list=newArrayList<>();
for(inti=0;i<30;i++){
//添加30条数据
list.add("这是条目"+i);
map.put(i,false);
}

}

/**
*全选
*/
publicvoidAll(){
Set>entries=map.entrySet();
booleanshouldall=false;
for(Map.Entryentry:entries){
Booleanvalue=entry.getValue();
if(!value){
shouldall=true;
break;
}
}
for(Map.Entryentry:entries){
entry.setValue(shouldall);
}
notifyDataSetChanged();
}

/**
*反选
*/
publicvoidneverall(){
Set>entries=map.entrySet();
for(Map.Entryentry:entries){
entry.setValue(!entry.getValue());
}
notifyDataSetChanged();
}

/**
*单选
*
*@parampostion
*/
publicvoidsinglesel(intpostion){
Set>entries=map.entrySet();
for(Map.Entryentry:entries){
entry.setValue(false);
}
map.put(postion,true);
notifyDataSetChanged();
}

//这里主要初始化布局控件
@Override
publicMyViewHolderonCreateViewHolder(ViewGroupparent,intviewType){
RecyclerView.LayoutManagerlayoutManager=((RecyclerView)parent).getLayoutManager();
//初始化布局文件
Viewinflate=LayoutInflater.from(parent.getContext()).inflate(R.layout.check,parent,false);
returnnewMyViewHolder(inflate);
}

@Override
publicvoidonBindViewHolder(finalMyViewHolderholder,finalintposition){
//放入集合中的值
holder.txt.setText(list.get(position));
holder.checkBox.setChecked(map.get(position));
holder.checkBox.setOnClickListener(newView.OnClickListener(){

@Override
publicvoidonClick(Viewv){
map.put(position,!map.get(position));
//刷新适配器
notifyDataSetChanged();
//单选
//singlesel(position);

}
});

}

@Override
publicintgetItemCount(){
returnlist.size();
}

publicclassMyViewHolderextendsRecyclerView.ViewHolder{
ViewitemView;
privateTextViewtxt;
privateCheckBoxcheckBox;

//初始化控件
publicMyViewHolder(ViewitemView){
super(itemView);
this.itemView=itemView;
txt=(TextView)itemView.findViewById(R.id.txt);
checkBox=(CheckBox)itemView.findViewById(R.id.cbox);
}
}
}

main.xml

Check.xml

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。

Android RecycleView使用（CheckBox全选、反选、单选）

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