Android RecyclerView实现点击条目删除

2023-09-05 10:39:05 67

本文实例为大家分享了RecyclerView实现点击条目删除的具体代码，供大家参考，具体内容如下

MainActivity.java

publicclassMainActivityextendsAppCompatActivityimplementsView.OnClickListener{

privateButtonmButton1;
privateButtonmButton2;
privateButtonmButton3;
privateButtonmButton4;
privateButtonmButton5;
privateRecyclerViewmRecyclerView;
privateArrayListmList;
privateLinearLayoutManagermLinearLayoutManager;
privateRvAdaptermAdapter;


@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

findViews();

mList=newArrayList<>();
for(inti=0;i<20;i++){
mList.add(i+"item");
}

mAdapter=newRvAdapter(mList,this);
mRecyclerView.setAdapter(mAdapter);

//设置分割线
mRecyclerView.addItemDecoration(newDividerItemDecoration(this,DividerItemDecoration.VERTICAL));
//设置默认布局
mLinearLayoutManager=newLinearLayoutManager(this,LinearLayoutManager.VERTICAL,false);
mRecyclerView.setLayoutManager(mLinearLayoutManager);

mAdapter.setOnItemClickListener(newRvAdapter.OnItemClickListener(){
@Override
publicvoidonItemClick(intposition){
mAdapter.remove(position);
}

@Override
publicvoidonItemLongClick(intposition){

mAdapter.remove(position);
}
});

}

privatevoidfindViews(){

mRecyclerView=findViewById(R.id.rv);

mButton1=findViewById(R.id.b1);
mButton2=findViewById(R.id.b2);
mButton3=findViewById(R.id.b3);
mButton4=findViewById(R.id.b4);
mButton5=findViewById(R.id.b5);

mButton1.setOnClickListener(this);
mButton2.setOnClickListener(this);
mButton3.setOnClickListener(this);
mButton4.setOnClickListener(this);
mButton5.setOnClickListener(this);


}

@Override
publicvoidonClick(Viewview){
switch(view.getId()){
caseR.id.b1:

mAdapter.addData(3);
mRecyclerView.scrollToPosition(0);
break;
caseR.id.b2:

mAdapter.remove(mList.size()-1);
break;
caseR.id.b3:

mLinearLayoutManager=newLinearLayoutManager(this,LinearLayoutManager.VERTICAL,false);
mRecyclerView.setLayoutManager(mLinearLayoutManager);
break;
caseR.id.b4:

mRecyclerView.setLayoutManager(newGridLayoutManager(this,3));
//mRecyclerView.addItemDecoration(newandroid.support.v7.widget.DividerItemDecoration(this,DividerItemDecoration.HORIZONTAL));

break;
caseR.id.b5:

mRecyclerView.setLayoutManager(newStaggeredGridLayoutManager(2,StaggeredGridLayoutManager.VERTICAL));
break;
}
}
}

activity_main.xml

RvAdapter.java

publicclassRvAdapterextendsRecyclerView.Adapter{

privateListlists;
privateContextmContext;

publicRvAdapter(Listlists,Contextcontext){
this.lists=lists;
mContext=context;
}

@Override
publicViewHolderonCreateViewHolder(ViewGroupparent,intviewType){
Viewview=View.inflate(mContext,R.layout.item,null);
ViewHolderholder=newViewHolder(view);
returnholder;
}

publicvoidaddData(intposition){
lists.add(position,"ff");
notifyItemInserted(position);
}

publicvoidremove(inti){
lists.remove(i);
notifyItemRemoved(i);
notifyDataSetChanged();

}

publicinterfaceOnItemClickListener{//自定义接口回调设置点击事件
voidonItemClick(intposition);
voidonItemLongClick(intposition);
}

privateOnItemClickListenermOnItemClickListener;

publicvoidsetOnItemClickListener(OnItemClickListeneronItemClickListener){
mOnItemClickListener=onItemClickListener;
}

@Override
publicvoidonBindViewHolder(finalViewHolderholder,finalintposition){
holder.mTextView.setText(lists.get(position));

holder.itemView.setOnClickListener(newView.OnClickListener(){
@Override
publicvoidonClick(Viewview){

intps=holder.getLayoutPosition();
mOnItemClickListener.onItemClick(ps);
}
});

holder.itemView.setOnLongClickListener(newView.OnLongClickListener(){
@Override
publicbooleanonLongClick(Viewview){

intps=holder.getLayoutPosition();
mOnItemClickListener.onItemLongClick(ps);
returnfalse;
}
});

}


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

publicstaticclassViewHolderextendsRecyclerView.ViewHolder{
publicfinalTextViewmTextView;

publicViewHolder(ViewitemView){
super(itemView);
mTextView=(TextView)itemView.findViewById(R.id.tv);
}
}
}

build.gradle

implementation'com.android.support:recyclerview-v7:27.1.1'

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 RecyclerView实现点击条目删除

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