OptionMenu ContextMenu 实现长按弹出和点击弹出

package com.example.mvvm;

import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {
    private Button btn;
    private TextView tvresute;
    private Button menu;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn = findViewById(R.id.btn);
        tvresute =findViewById(R.id.tvresute);
        menu = findViewById(R.id.menu);
        menu.setOnCreateContextMenuListener(this);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                btn.setText("下载中....");
                Toast.makeText(MainActivity.this,"下载中",Toast.LENGTH_SHORT).show();
            }
        });
        tvresute.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
               String num = "输出值";
                Intent intent = new Intent(MainActivity.this, Resute.class);
                intent.putExtra("MSG",num);
                startActivity(intent);
            }
        });
//        menu.setOnClickListener(new View.OnClickListener() {
//            @Override
//            public void onClick(View v) {
//                Log.d("输出","d");
//            }
//        });
    }
@Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo){
        super.onCreateContextMenu(menu,v,menuInfo);
    menu.add(0,2,0,"添加1");
        menu.add(0,3,0,"删除");
}
@Override
public boolean onContextItemSelected(MenuItem item){
    switch (item.getItemId()){
        case 2:
            Log.d("添加","成功");
            break;
        case 3:
            Log.d("删除","成功");
            break;
        default:
            break;
    }
    return super.onOptionsItemSelected(item);
}



    @Override
    public boolean onCreateOptionsMenu(Menu menu){
//        menu.add(0,2,0,"添加1");
//        menu.add(0,3,0,"删除");
        MenuInflater menuInflater = getMenuInflater();
        menuInflater.inflate(R.menu.menu_mian,menu);
    return super.onCreateOptionsMenu(menu);
    }
    @Override
    public boolean onOptionsItemSelected(MenuItem item){
        switch (item.getItemId()){
            case R.id.add:
                Log.d("添加","成功");
                break;
            case R.id.add2:
                Log.d("删除","成功");
                break;
            default:
                break;
        }
        return super.onOptionsItemSelected(item);
    }

}