android - 单击按钮时，将多个值从 recyclerview 传递到主要活动

问题描述

我正在开发一个健身房应用程序，项目显示如下。布局中有添加按钮和下一步按钮。当我单击回收站视图中的添加按钮时，按钮的文本更改为添加和删除按钮，如下图所示。现在，当我单击下一个按钮时，所有添加的项目文本都必须传递给我的 mainActivity。

我不知道该怎么做。这是图像

这是我的 recyclerviewAdapter

public class myAdapter extends RecyclerView.Adapter<myAdapter.MyView> {
private ArrayList<String> ex_name;
private ArrayList<Integer> ex_img;
private Context context;


public myAdapter(ArrayList<String> ex_name, ArrayList<Integer> ex_img, Context context) {
    this.ex_name = ex_name;
    this.ex_img = ex_img;
    this.context = context;
}


@NonNull
@Override
public myAdapter.MyView onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_view, parent, false);
    return new MyView(v);
}

@Override
public void onBindViewHolder(@NonNull myAdapter.MyView holder, int position) {
    holder.ex_name.setText(ex_name.get(position));
    holder.ex_img.setImageResource(ex_img.get(position));
}

@Override
public int getItemCount() {

    return ex_name.size();
}


public class MyView extends RecyclerView.ViewHolder {
    public TextView ex_name;
    public ImageView ex_img;
    public Button add, remove;

    public MyView(@NonNull View itemView) {
        super(itemView);
        ex_name = itemView.findViewById(R.id.card_exeName);
        ex_img = itemView.findViewById(R.id.card_exeImg);
        add = itemView.findViewById(R.id.add_btn);
        remove = itemView.findViewById(R.id.remove_btn);

        add.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                add.setText("Added");
                remove.setVisibility(View.VISIBLE);


            }
        });
        remove.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                remove.setVisibility(View.INVISIBLE);
                add.setText("Add");

            }
        });

    }
}

这是我的 MainActivity

  private RecyclerView recycler_view;
private RecyclerView.Adapter adapter;
private ArrayList<String> ex_name;
private ArrayList<Integer> ex_img;
private String select_ex_name;

Intent intent;
TextView exName;
Button next;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_exercise);
    exName = findViewById(R.id.exe_name);
    next = findViewById(R.id.next_btn);
    intent = getIntent();
    ex_name = new ArrayList<>();
    ex_img = new ArrayList<Integer>();
    select_ex_name = intent.getStringExtra("Excercise_name");

    if (select_ex_name.equals("biceps")) {
        exName.setText("Biceps");
        ex_name.add("Fat-Grip Hammer Curl");
        ex_img.add(R.drawable.bicpes_1);
        ex_name.add("EZ-Bar Preacher Curl");
        ex_img.add(R.drawable.biceps_2);
        ex_name.add("Reverse Curl");
        ex_img.add(R.drawable.biceps_3);
        ex_name.add("Wide-Grip Curl");
        ex_img.add(R.drawable.biceps_4);
        ex_name.add("Close-Grip Curl");
        ex_img.add(R.drawable.biceps_5);
        ex_name.add("Hammer Curl");
        ex_img.add(R.drawable.biceps_6);
        ex_name.add("Dip");
        ex_img.add(R.drawable.biceps_7);
        ex_name.add("Behind-the-Back Cable Curl");
        ex_img.add(R.drawable.biceps_8);
        ex_name.add("Side Curl with Band");
        ex_img.add(R.drawable.biceps_9);

    } else if (select_ex_name.equals("chest")) {
        exName.setText("Chest");
        ex_name.add("Barbell Bench Press");
        ex_img.add(R.drawable.chest_1);
        ex_name.add("Dumbbell Bench Press");
        ex_img.add(R.drawable.chest_2);
        ex_name.add("Smith Machine Incline Press");
        ex_img.add(R.drawable.chest_3);
        ex_name.add("Incline Dumbbell Flye");
        ex_img.add(R.drawable.chest_4);
        ex_name.add("Cable Crossover");
        ex_img.add(R.drawable.chest_5);
        ex_name.add("Incline Dumbbell Press");
        ex_img.add(R.drawable.chest_6);
        ex_name.add("Chest Press Machine");
        ex_img.add(R.drawable.chest_7);
        ex_name.add("Dumbbell Flye");
        ex_img.add(R.drawable.chest_8);
        ex_name.add("Low-Cable Crossover");
        ex_img.add(R.drawable.chest_9);
    } else if (select_ex_name.equals("back")) {
        exName.setText("Back");
        ex_name.add("Deadlift");
        ex_img.add(R.drawable.back_1);
        ex_name.add(" Incline Dumbbell Row");
        ex_img.add(R.drawable.back_2);
        ex_name.add("Trap-Bar Deadlift");
        ex_img.add(R.drawable.back_3);
        ex_name.add("Cable Row");
        ex_img.add(R.drawable.back_4);
        ex_name.add("Yates Row");
        ex_img.add(R.drawable.back_5);
        ex_name.add(" Bentover Row to Neck");
        ex_img.add(R.drawable.back_6);
        ex_name.add("Close-Grip Pull-Down");
        ex_img.add(R.drawable.back_7);
        ex_name.add(" Single-Arm Dumbbell Row");
        ex_img.add(R.drawable.back_8);


    } else if (select_ex_name.equals("triceps")) {
        exName.setText("Triceps");
        ex_name.add("Diamond Pushup");
        ex_img.add(R.drawable.tri_1);
        ex_name.add("Neutral-Grip Triceps Extension");
        ex_img.add(R.drawable.tri_2);
        ex_name.add("Reverse Curl");
        ex_img.add(R.drawable.tri_3);
        ex_name.add("Pullover/Triceps Extension");
        ex_img.add(R.drawable.tri_4);
        ex_name.add("Decline Triceps Extension");
        ex_img.add(R.drawable.tri_5);
        ex_name.add("Close-Grip Bench Press");
        ex_img.add(R.drawable.tri_6);
        ex_name.add(" Lying Triceps Extension");
        ex_img.add(R.drawable.tri_7);
        ex_name.add("Underhand Kickback");
        ex_img.add(R.drawable.tri_8);

    } else if (select_ex_name.equals("legs")) {
        exName.setText("Legs");
        ex_name.add("Leg Press");
        ex_img.add(R.drawable.legs1);
        ex_name.add("Pause Squat");
        ex_img.add(R.drawable.leg_2);
        ex_name.add("Reverse Lunge");
        ex_img.add(R.drawable.leg_3);
        ex_name.add("Dumbbell Squat");
        ex_img.add(R.drawable.leg_4);
        ex_name.add("Barbell Hip Thrust");
        ex_img.add(R.drawable.leg_5);
        ex_name.add("Seated Calf Raise");
        ex_img.add(R.drawable.leg_6);
        ex_name.add("Front Squat");
        ex_img.add(R.drawable.leg_7);
        ex_name.add("Romanian Deadlift");
        ex_img.add(R.drawable.leg_8);
        ex_name.add("Squart");
        ex_img.add(R.drawable.leg_9);
    } else if (select_ex_name.equals("shoulder")) {
        exName.setText("Shoulder");
        ex_name.add("Barbell Overhead Press");
        ex_img.add(R.drawable.shoulder_1);
        ex_name.add("Standing Dumbbell Fly");
        ex_img.add(R.drawable.shoulder_2);
        ex_name.add(" Face Pull");
        ex_img.add(R.drawable.shoulder_3);
        ex_name.add("High Pull");
        ex_img.add(R.drawable.shoulder_4);
        ex_name.add("Seated Dumbbell Clean");
        ex_img.add(R.drawable.shoulder_5);
        ex_name.add(" Clean and Press");
        ex_img.add(R.drawable.shoulder_6);
        ex_name.add("Snatch-Grip High Pull");
        ex_img.add(R.drawable.shoulder_7);
        ex_name.add("Machine Shoulder Press");
        ex_img.add(R.drawable.shoulder_8);

    }
    recycler_view = findViewById(R.id.recyclerView);
    recycler_view.setHasFixedSize(true);
    recycler_view.setLayoutManager(new LinearLayoutManager(this));
    adapter = new myAdapter(ex_name, ex_img, exerciseActivity.this);
    recycler_view.setAdapter(adapter);
    next.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

        }
    });
}

}

标签： androidandroid-recyclerview

android - 单击按钮时，将多个值从 recyclerview 传递到主要活动

问题描述

解决方案

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