Android跳转后端

package com.hui.weblab;

import androidx.appcompat.app.AppCompatActivity;


import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
    //声明控件
    private TextView mTVWebRoom;
    private TextView mTVBook;
    private TextView mTVSc;
    private TextView mTVOur;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //获取控件
        mTVWebRoom = findViewById(R.id.shouye_webroom);
        mTVBook = findViewById(R.id.shouye_book);
        mTVSc = findViewById(R.id.shouye_sc);
        mTVOur = findViewById(R.id.shouye_our);

        //实现直接跳转 method1
        setListener();
    }
    private void setListener(){
        //OnCLike 点击事件
        OnClick onClick=new OnClick();
        //对每一个按钮进行setONclickListener
        mTVWebRoom.setOnClickListener(onClick);
        mTVBook.setOnClickListener(onClick);
        mTVSc.setOnClickListener(onClick);
        mTVOur.setOnClickListener(onClick);
    }
    private class OnClick implements View.OnClickListener{

        @Override
        public void onClick(View v) {
            Intent intent=null;
            switch (v.getId()){
                case R.id.shouye_webroom:
                    intent = new Intent(MainActivity.this,WebRoomActivity.class);
                    break;
                case R.id.shouye_book:
                    intent = new Intent(MainActivity.this,BookActivity.class);
                    break;
                case R.id.shouye_sc:
                    intent = new Intent(MainActivity.this,ScActivity.class);
                    break;
                case R.id.shouye_our:
                    intent = new Intent(MainActivity.this,OurActivity.class);
                    break;
            }
            startActivity(intent);
        }
    }