我希望 onclicklistener 方法打開與對象相關的活動：entidad1、entidad2 或 entidad3。MainActivity.java 上的 OnRecipe 方法，如果 entidad1 出現，它會帶我到 x 活動，如果 entidad2 出現在 y 活動等，關于如何做的任何想法，因為現在它需要我所有entidad1 活動的時間。我想這一定與使用優先級來決定打開哪個而不是位置有關。那是我的適配器：package com.test.platos_4;import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.RatingBar;import android.widget.TextView;import java.util.List;public class Adaptador2 extends RecyclerView.Adapter<Adaptador2.ViewHolder>{ private List<Entidad2> listItems; private OnRecipeListener mOnRecipeListener; public Adaptador2(List<Entidad2> listItems, OnRecipeListener onRecipeListener) { this.listItems = listItems; this.mOnRecipeListener = onRecipeListener; } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.elemento_lista2, parent, false); return new ViewHolder(view, mOnRecipeListener); } @Override public void onBindViewHolder(ViewHolder viewholder, int position) { int resource = listItems.get(position).getImgFoto(); String title = listItems.get(position).getTitulo(); String time = listItems.get(position).getTiempo(); int barra = listItems.get(position).getRating(); //int fondo = listItems.get(position).getColorfondo(); viewholder.setData(resource, title, time, barra); // por si necesito color de fondo viewholder.setData(resource, title, time, barra, fondo); } @Override public int getItemCount() { return listItems.size(); } class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener { private ImageView imgFoto; private TextView titulo; private TextView tiempo; private RatingBar ratingBar; }
1 回答
UYOU
TA貢獻1878條經驗 獲得超4個贊
您正在嘗試按優先級區分您的項目，但您正在將項目位置從適配器傳遞給您的活動。您需要傳遞點擊項目的優先級而不是其位置。我已經更改了您的 Adaptor2 類
package com.test.platos_4;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.RatingBar;
import android.widget.TextView;
import java.util.List;
public class Adaptador2 extends RecyclerView.Adapter<Adaptador2.ViewHolder>
{
private List<Entidad2> listItems;
private OnRecipeListener mOnRecipeListener;
public Adaptador2(List<Entidad2> listItems, OnRecipeListener onRecipeListener) {
this.listItems = listItems;
this.mOnRecipeListener = onRecipeListener;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.elemento_lista2, parent, false);
return new ViewHolder(view, mOnRecipeListener);
}
@Override
public void onBindViewHolder(ViewHolder viewholder, int position) {
Entidad2 entidad = listItems.get(position);
int resource = entidad.getImgFoto();
String title = entidad.getTitulo();
String time = entidad.getTiempo();
int barra = entidad.getRating();
final int priority = entidad.getPriority();
//int fondo = listItems.get(position).getColorfondo();
viewholder.setData(resource, title, time, barra);
//You can pass the clicked item's priority back to your activity like this
viewholder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mOnRecipeListener.OnRecipe(priority);
}
});
// por si necesito color de fondo viewholder.setData(resource, title, time, barra, fondo);
}
@Override
public int getItemCount() {
return listItems.size();
}
class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private ImageView imgFoto;
private TextView titulo;
private TextView tiempo;
private RatingBar ratingBar;
//private ImageView colorfondo;
OnRecipeListener onRecipeListener;
public ViewHolder(View itemView, OnRecipeListener onRecipeListener) {
super(itemView);
imgFoto = itemView.findViewById(R.id.imgFoto);
titulo = itemView.findViewById(R.id.tvTitulo);
tiempo = itemView.findViewById(R.id.tvTiempo);
ratingBar = itemView.findViewById(R.id.ratingBarVerd);
//colorfondo = itemView.findViewById(R.id.colorfondo);
//This is useless
//this.onRecipeListener = onRecipeListener;
}
//por si necesito color de fondo private void setData(int resource, String title, String time, int barra, int fondo){
private void setData(int resource, String title, String time, int barra){
imgFoto.setImageResource(resource);
titulo.setText(title);
tiempo.setText(time);
ratingBar.setRating(barra);
//colorfondo.setImageResource(fondo);
}
@Override
public void onClick(View v) {
}
}
public interface OnRecipeListener{
void OnRecipe(int priority);
}
}
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