QQ界面

要先写四个布局和四个Fragment页面
MainActivity

package com.lwj.jinritoutiao;

import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.RadioGroup;

import com.lwj.jinritoutiao.fragment.Fragment_gridview;
import com.lwj.jinritoutiao.fragment.Fragment_listview;
import com.lwj.jinritoutiao.fragment.Fragment_morelistview;
import com.lwj.jinritoutiao.fragment.Fragment_xlistview;

public class MainActivity extends AppCompatActivity {

    private FragmentManager manager;
    private Fragment_listview fragment_listview;
    private Fragment_gridview fragment_gridview;
    private Fragment_xlistview fragment_xlistview;
    private Fragment_morelistview fragment_morelistview;
    private RadioGroup radioGroup;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //找控件
        radioGroup = findViewById(R.id.rg1);
        //获取管理者
        manager = getSupportFragmentManager();
        //开启
        FragmentTransaction transaction = manager.beginTransaction();
        //创建fragment对象
        fragment_listview = new Fragment_listview();
        fragment_gridview = new Fragment_gridview();
        fragment_xlistview = new Fragment_xlistview();
        fragment_morelistview = new Fragment_morelistview();
        //添加
        transaction.add(R.id.fm, fragment_listview);
        transaction.add(R.id.fm, fragment_gridview);
        transaction.add(R.id.fm, fragment_xlistview);
        transaction.add(R.id.fm, fragment_morelistview);
        //默认选中第一个
        radioGroup.check(radioGroup.getChildAt(0).getId());
        //显示及隐藏
        transaction.show(fragment_listview).hide(fragment_gridview).hide(fragment_morelistview).hide(fragment_xlistview);
        //提交
        transaction.commit();
        //监听事件
        radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup radioGroup, int i) {
                //开启
                FragmentTransaction transaction1 = manager.beginTransaction();
                switch (i) {
                    case R.id.rb1:
                        //显示及隐藏
                        transaction1.show(fragment_listview).hide(fragment_gridview).hide(fragment_morelistview).hide(fragment_xlistview);
                        break;
                    case R.id.rb2:
                        //显示及隐藏
                        transaction1.show(fragment_gridview).hide(fragment_listview).hide(fragment_morelistview).hide(fragment_xlistview);
                    break;
                    case R.id.rb3:
                        //显示及隐藏
                        transaction1.show(fragment_xlistview).hide(fragment_listview).hide(fragment_gridview).hide(fragment_morelistview);
                        break;
                    case R.id.rb4:
                        //显示及隐藏
                        transaction1.show(fragment_morelistview).hide(fragment_listview).hide(fragment_xlistview).hide(fragment_gridview);
                        break;
                }
                //提交
                transaction1.commit();
            }
        });

    }
}

效果图:
在这里插入图片描述

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转载自blog.csdn.net/qq_43797842/article/details/85758420
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