Question

是否可以在两个活动中为不同的不同工作调用相同的适配器这是我的RecyclerAdapter：从两个活动调用时只有区别在于：从Activity1.java开始：

        holder.Name.setText(arrayList.get(position).getName());

来自Activity2.java

        holder.Name.setText(arrayList.get(position).getVehicle());

所有其他代码是相同的，我如何使用相同的适配器进行不同的工作。

public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.MyViewHolder> {

private ArrayList<Contact> arrayList= new ArrayList<>();

public RecyclerAdapter(ArrayList<Contact> arrayList){

    this.arrayList= arrayList;

}

@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view= LayoutInflater.from(parent.getContext()).inflate(R.layout.item_view,parent,false);

    return new MyViewHolder(view);
}

@Override
public void onBindViewHolder (MyViewHolder holder, int position) {

    holder.Name.setText(arrayList.get(position).getName());
    int sync_status = arrayList.get(position).getSync_status();
    if(sync_status== DbContact.SYNC_STATUS_OK){
        holder.Sync_Status.setImageResource(R.drawable.success);

    }
    else {
        holder.Sync_Status.setImageResource(R.drawable.stopwatch);
    }

}

@Override
public int getItemCount() {
    return arrayList.size();
}

public static class MyViewHolder extends RecyclerView.ViewHolder{

    ImageView Sync_Status;
    TextView Name;

    public MyViewHolder(View itemView) {
        super(itemView);
        Sync_Status=(ImageView)itemView.findViewById(R.id.imgSync);
        Name=(TextView)itemView.findViewById(R.id.txtName);
    }
}
}

Answer 1

public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.MyViewHolder> {

private ArrayList<Contact> arrayList= new ArrayList<>();
private int whichActivity;

public RecyclerAdapter(ArrayList<Contact> arrayList, int activity){
    whichActivity = activity;
    this.arrayList= arrayList;
}

@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view= LayoutInflater.from(parent.getContext()).inflate(R.layout.item_view,parent,false);
    return new MyViewHolder(view);
}

@Override
public void onBindViewHolder (MyViewHolder holder, int position) {
    if(whichActivity == 0) {
        holder.Name.setText(arrayList.get(position).getName());
    }
    else {
        holder.Name.setText(arrayList.get(position).getVehicle());
    }
    int sync_status = arrayList.get(position).getSync_status();
    if(sync_status== DbContact.SYNC_STATUS_OK){
        holder.Sync_Status.setImageResource(R.drawable.success);

    }
    else {
        holder.Sync_Status.setImageResource(R.drawable.stopwatch);
    }

}

@Override
public int getItemCount() {
    return arrayList.size();
}

public static class MyViewHolder extends RecyclerView.ViewHolder{

    ImageView Sync_Status;
    TextView Name;

    public MyViewHolder(View itemView) {
        super(itemView);
        Sync_Status=(ImageView)itemView.findViewById(R.id.imgSync);
        Name=(TextView)itemView.findViewById(R.id.txtName);
    }
}
}

试试这段代码。现在，当您在 Activity1中创建RecyclerAdapter时，调用new RecyclerAdapter（arrayList，0），当您在 Activity2中创建RecyclerAdapter时，请调用new RecyclerAdapter（arrayList，1）。您只是将一个变量传递给构造函数，以便您的适配器知道它所处的活动，并且可以根据活动运行不同的逻辑。

如何以不同的方式在两个活动中使用相同的适配器

1 个答案: