6.17 3

package com.zhen.accountbook;

import android.os.Bundle;
import android.view.View;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.viewpager.widget.ViewPager;
import com.google.android.material.tabs.TabLayout;
import com.zhen.accountbook.adapter.RecordPagerAdapter;
import com.zhen.accountbook.frag_record.InFragment;
import com.zhen.accountbook.frag_record.OutFragment;

import java.util.ArrayList;
import java.util.List;

public class RecordActivity extends AppCompatActivity {
    TabLayout tabLayout;
    ViewPager viewPager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_record);
//        1、查找控件
        tabLayout = findViewById(R.id.record_tabs);
        viewPager = findViewById(R.id.record_vp);
//        2、设置ViewPaper加载页面
        initPager();
    }

    private void initPager() {
//        初始化(fragment) ViewPaper的集合
        List<Fragment> fragmentList = new ArrayList<>();
//        创建收入和支出页面，放在fragment当中
        OutFragment outFragment = new OutFragment();
        InFragment inFragment = new InFragment();
        fragmentList.add(outFragment);
        fragmentList.add(inFragment);
        //创建适配器
        RecordPagerAdapter recordPagerAdapter = new RecordPagerAdapter(getSupportFragmentManager(), fragmentList);


        //设置适配器对象
        viewPager.setAdapter(recordPagerAdapter);
//将TabLayout和ViewPaper进行关联
        tabLayout.setupWithViewPager(viewPager);
    }

    public void onClick(View view) {
        if (view.getId() == R.id.record_iv_back) {
            finish();
        }
    }
}