使用按钮在 RecycleView 中动态添加项目 [英] Adding Items in RecycleView Dynamically using a button
本文介绍了使用按钮在 RecycleView 中动态添加项目的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个按钮(保存联系人)来保存联系人，按下该按钮时可以从编辑文本中获取姓名和电子邮件，并且应该在回收视图中动态添加 1 个列表项
I have a button(save contact) to save contacts ,the button when pressed get name and email from edit text and should dynamically add 1 list item in recycle view
保存按钮在片段中
这是我提取的名字
company_name=(EditText)view.findViewById(R.id.edittext_companyname_createMeeting);
当我点击铅时，它应该添加到现有的回收视图中
When i click on lead it should add in the existing recycleview
leads.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
newValueAdapter.newAddeddata(company_name.getText().toString());*/
}
});
回收视图已经有一个arraylist，我如何向arraylist添加新值并再次调用oncreate
The recycle view already have a arraylist,how do i add new value to the arraylist and again call oncreate
我试图提取公司名称并将其发送到该回收站视图的适配器，但它不起作用
I tried to extract company name and send it to the adapter of that recycler view but it dint work
RecyclerView 的适配器
Adapter of RecyclerView
public class NewleadsAdapter extends RecyclerView.Adapter<NewleadsAdapter.MyViewHolder> {
Context context;
LayoutInflater inflater;
int positionbundle;
ArrayList<NewleadsPOJO> datalist;
public NewleadsAdapter(Context context, ArrayList<NewleadsPOJO> datalist,int positionbundle){
this.context=context;
this.datalist=datalist;
this.positionbundle=positionbundle;
}
/* public NewleadsAdapter(){}*/
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view=LayoutInflater.from(context).inflate(R.layout.custom_new_leads,parent,false);
MyViewHolder myViewHolder=new MyViewHolder(view);
return myViewHolder;
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
holder.leads_company.setText(datalist.get(position).getLeads_company());
holder.leads_date.setText(datalist.get(position).getLeads_date());
holder.leads_time.setText(datalist.get(position).getLeads_time());
if (positionbundle == 1){
/* holder.icon1.setVisibility(View.GONE);*/
holder.icon1.setImageResource(R.drawable.taskcompletednewblue);
}else{}
Log.e("Create_meetingdate_ArrayList:", datalist.get(0).getLeads_company()); /* Arrays.deepToString(data.toArray())*/
System.out.println(datalist.get(0).getLeads_company());
}
@Override
public int getItemCount() {
return datalist.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder{
TextView leads_company,leads_date,leads_time;
ImageView icon1;
public MyViewHolder(View itemView) {
super(itemView);
leads_company=(TextView)itemView.findViewById(R.id.leads_company);
leads_date=(TextView)itemView.findViewById(R.id.leads_date);
leads_time=(TextView)itemView.findViewById(R.id.leads_time);
icon1=(ImageView)itemView.findViewById(R.id.leads_info);
}
}
/*public void newAddeddata(String company_name){
NewleadsPOJO newValue=new NewleadsPOJO();
newValue.setLeads_company(company_name);
datalist.add(datalist.size(),newValue);
}*/
}
创建meetingfrag.java
Createmeetingfrag.java
public class CreateMeetingFrag extends Fragment {
TextView leads,cold,warm,hot,closed;
EditText company_name,email,date,time;
public CreateMeetingFrag() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, final ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view= inflater.inflate(R.layout.fragment_create_meeting, container, false);
company_name=(EditText)view.findViewById(R.id.edittext_companyname_createMeeting);
leads=(TextView)view.findViewById(R.id.meeting_leads);
cold=(TextView)view.findViewById(R.id.meeting_cold);
warm=(TextView)view.findViewById(R.id.meeting_warm);
hot=(TextView)view.findViewById(R.id.meeting_hot);
closed=(TextView)view.findViewById(R.id.meeting_closed);
leads.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//getSavedValues();
/* NewleadsAdapter newValueAdapter=new NewleadsAdapter();
newValueAdapter.newAddeddata(company_name.getText().toString());*/
NewleadsAdapter newValue=new NewleadsAdapter();
newValue.newAddeddata(company_name.getText().toString());
setDefaultValues();
leads.setBackgroundColor(getResources().getColor(R.color.blue));
Toast.makeText(getActivity(),"leads clicked and saved",Toast.LENGTH_SHORT).show();
leads.setTextColor(getResources().getColor(R.color.white));
}
});
cold.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
setDefaultValues();
cold.setBackgroundColor(getResources().getColor(R.color.blue));
Toast.makeText(getActivity(),"leads clicked",Toast.LENGTH_SHORT).show();
cold.setTextColor(getResources().getColor(R.color.white));
}
});
warm.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
setDefaultValues();
warm.setBackgroundColor(getResources().getColor(R.color.blue));
Toast.makeText(getActivity(),"leads clicked",Toast.LENGTH_SHORT).show();
warm.setTextColor(getResources().getColor(R.color.white));
}
});
hot.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
setDefaultValues();
hot.setBackgroundColor(getResources().getColor(R.color.blue));
Toast.makeText(getActivity(),"leads clicked",Toast.LENGTH_SHORT).show();
hot.setTextColor(getResources().getColor(R.color.white));
}
});
closed.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
setDefaultValues();
closed.setBackgroundColor(getResources().getColor(R.color.blue));
Toast.makeText(getActivity(),"leads clicked",Toast.LENGTH_SHORT).show();
closed.setTextColor(getResources().getColor(R.color.white));
}
});
return view;
}
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public void setDefaultValues(){
leads.setBackgroundColor(getResources().getColor(R.color.white));
cold.setBackgroundColor(getResources().getColor(R.color.white));
warm.setBackgroundColor(getResources().getColor(R.color.white));
hot.setBackgroundColor(getResources().getColor(R.color.white));
closed.setBackgroundColor(getResources().getColor(R.color.white));
closed.setTextColor(getResources().getColor(R.color.black_semi_transparent));
hot.setTextColor(getResources().getColor(R.color.black_semi_transparent));
warm.setTextColor(getResources().getColor(R.color.black_semi_transparent));
cold.setTextColor(getResources().getColor(R.color.black_semi_transparent));
leads.setTextColor(getResources().getColor(R.color.black_semi_transparent));
leads.setBackground(getResources().getDrawable(R.drawable.bordder_button));
closed.setBackground(getResources().getDrawable(R.drawable.bordder_button));
hot.setBackground(getResources().getDrawable(R.drawable.bordder_button));
warm.setBackground(getResources().getDrawable(R.drawable.bordder_button));
cold.setBackground(getResources().getDrawable(R.drawable.bordder_button));
}
}
推荐答案
将此方法添加到您的适配器并调用按钮单击.
Add this method to your adapter and call on button click.
public void newAddeddata(String company_name){
NewleadsPOJO newValue=new NewleadsPOJO();
newValue.setLeads_company(company_name);
datalist.add(newValue);
notifyDataSetChanged();
}
将以下方法添加到 NewLeadFrag
Add following method to NewLeadFrag
public NewleadsAdapter getAdapter(){
return adapter;
}
现在在 Createmeetingfrag
now in Createmeetingfrag
leads.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
NewLeadFrag fragment = getFragmentManager().findFragmentByTag("NewLeadFrag_TAG"); //set tag of fragment when you add with fragment manager. and if you are using support library use getSupportFragmentManager()
if(fragment!= null){
fragment.getAdapter().newAddeddata(company_name.getText().toString());
}
}
});
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