在我的应用程序中,我需要启动 RecyclerAdapter.class 并等待结果,但我无法编写行 setResult 并完成:
public static class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView title;
ImageView icon;
public MyViewHolder(View itemView) {
super(itemView);
title = (TextView) itemView.findViewById(R.id.list_title);
icon = (ImageView) itemView.findViewById(R.id.list_item);
icon.setOnClickListener(this);
}
@Override
public void onClick(View v) {
String selectedCountry;
int country = getPosition();
String ololo = Integer.toString(country);
Log.i("WORKS" ,"Выюрана страна под номером" +ololo);
switch (getPosition()) {
case 0:
selectedCountry = "ukr";
Log.i ("1" ,"" +selectedCountry);
Intent intent= new Intent();
intent.putExtra("country", selectedCountry);
break;
case 1:
selectedCountry = "by";
Log.i ("1" ,"" +selectedCountry);
break;
case 2:
selectedCountry = "rus";
Log.i ("1" ,"" +selectedCountry);
break;
case 3:
selectedCountry = "nrus";
Log.i ("1" ,"" +selectedCountry);
break;
}
//intent. putExtra("country")
}
}
我需要怎么写?请帮助我并解释我做错了什么 我需要从所有案例中设置结果
编辑:
public class RecyclerAdapterChooseCountry extends RecyclerView.Adapter<RecyclerAdapterChooseCountry.MyViewHolder> {
private LayoutInflater inflater;
List<CountryInformation> data = Collections.emptyList();
public RecyclerAdapterChooseCountry(Context context, List<CountryInformation> data) {
inflater = LayoutInflater.from(context);
this.data = data;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.country_list, parent, false);
MyViewHolder holder = new MyViewHolder(view, mActivity /*<- cant add this*/ );
return holder;
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
CountryInformation information = data.get(position);
holder.title.setText(information.title);
holder.icon.setImageResource(information.iconId);
}
@Override
public int getItemCount() {
return data.size();
}
public static class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView title;
ImageView icon;
private Activity mActivity;
public MyViewHolder(View itemView, Activity mActivity ) {
super(itemView);
title = (TextView) itemView.findViewById(R.id.list_title);
icon = (ImageView) itemView.findViewById(R.id.list_item);
icon.setOnClickListener(this);
this.mActivity = mActivity;
}
@Override
public void onClick(View v) {
String selectedCountry;
int country = getPosition();
String ololo = Integer.toString(country);
Log.i("WORKS", "Выюрана страна под номером" + ololo);
switch (getPosition()) {
case 0:
selectedCountry = "ukr";
Log.i("1", "" + selectedCountry);
Intent intent = new Intent();
intent.putExtra("country", selectedCountry);
mActivity.setResult(mActivity.RESULT_OK, intent);
mActivity.finish();
break;
case 1:
selectedCountry = "by";
Log.i("1", "" + selectedCountry);
break;
case 2:
selectedCountry = "rus";
Log.i("1", "" + selectedCountry);
break;
case 3:
selectedCountry = "nrus";
Log.i("1", "" + selectedCountry);
break;
}
}
}
最佳答案
Can't set method setResult in RecyclerAdapter
setResult
在 MyViewHolder
类中不可访问,因为 setResult在 Activity 类中定义
为了从非 Activity 类访问 setResult
,在创建 Adapter 对象时在 Adapter 构造函数中传递 Activity 上下文:
private Activity mActivity;
public MyViewHolder(View itemView,Activity mActivity) {
super(itemView);
/...your code here..
this.mActivity=mActivity;
}
使用 mActivity
访问 Button onClick 中的 setResult
关于android - 无法在 RecyclerAdapter 中设置方法 setResult,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/28560722/