冲刺第八天

继续优化，这一阶段今天完成，准备开始整合


之前底部导航的优化代码
`package com.example.yibaifen;

import androidx.appcompat.app.AppCompatActivity;
import androidx.viewpager2.widget.ViewPager2;

import android.content.Intent;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.widget.RadioGroup;
import android.widget.Toast;

import com.example.yibaifen.R;
public class Mainpage extends AppCompatActivity {

private ViewPager2 viewPager;
private RadioGroup radioGroup;
private MyFragmentAdapter adapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.mainpage);
    //获得用户id
    Intent intent = getIntent();
    String user = intent.getStringExtra("user");
    System.out.println(user);
    viewPager = findViewById(R.id.viewPager);
    radioGroup = findViewById(R.id.radioGroup);

//配置滑动和页面的适配器
adapter = new MyFragmentAdapter(this,user);
viewPager.setAdapter(adapter);

    // 设置RadioGroup的点击监听器
    radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(RadioGroup group, int checkedId) {
            if (checkedId == R.id.radioButtonHome) {
                viewPager.setCurrentItem(0);

            }
            else if(checkedId == R.id.radioButtonMy)
            {
                viewPager.setCurrentItem(1);
            }
            else if(checkedId == R.id.radioButtonOrg)
            {
                viewPager.setCurrentItem(2);
            }
            // 为其他RadioButton添加对应的case
        }
    });

    // 让ViewPager2的变化同步到RadioGroup
    viewPager.registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
        @Override
        public void onPageSelected(int position) {
            radioGroup.check(getRadioButtonIdByPosition(position));
        }
    });
}

// 辅助方法，根据ViewPager的位置找到对应的RadioButton的ID
private int getRadioButtonIdByPosition(int position) {
    switch (position) {
        case 0:
            return R.id.radioButtonHome;
        case 1:
            return R.id.radioButtonMy;
        case 2:
            return R.id.radioButtonOrg;
        // 添加更多case
        default:
            return R.id.radioButtonHome;
    }
}

}`