使用Android Studio制作一个类微信APP界面的框架
系统是win10，sdk是Android 33

创建一个新项目，语言为java

将UI素材文件导入（复制直接在drawable中粘贴）到drawable中
全部选是

在layout的XML中创建一个新的Layout XML file

拖动一个Textview修改文本为WeChat

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="65dp"android:gravity="center"android:background="#000000"android:orientation="vertical"><TextViewandroid:id="@+id/textView"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_horizontal"android:text="WeChat"android:textColor="#ffffff"android:textSize="20sp" />
</LinearLayout>

同样的操作，创建一个新的XML文件命名为bottom


先创建一个LinearLayout（vertical）
拖动textView和ImageBottom在LinearLayout中

选择你要导入的图片****就是之前导入到drawable中的

    <ImageButtonandroid:id="@+id/id_tab_weixin_img"android:layout_width="match_parent"android:layout_height="80dp"android:contentDescription="@string/app_name"android:background="#000000"app:srcCompat="@drawable/tab_weixin_pressing"android:scaleType="centerInside"/><TextViewandroid:id="@+id/textView1"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="对话"android:gravity="center"android:textColor="#ffffff"android:textSize="15dp" />
</LinearLayout>

修改文本背景和bottom背景

android:scaleType="centerInside"

如果图片格式不匹配，这行代码能将图片完整居中显示
将bottom挪到文本上方

同时复制粘贴三次LinearLayout，在代码行修改文本，名字，和图片

最后显示为这样

在layout中创建XML文件activity_main

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><include layout="@layout/top" /><FrameLayoutandroid:id="@+id/id_content"android:layout_width="match_parent"android:layout_height="0dp"android:layout_weight="1"></FrameLayout><include layout="@layout/bottom"/>
</LinearLayout>

最后形成这样的效果

创建四个XML文件填充各个界面的空白

创建4个Fragment

在最后把tab02的位置的代码替换成tab02

最后MainActivity

package com.example.work;import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.widget.ImageButton;import com.example.work.ContactBlankFragment;
import com.example.work.MeBlankFragment;
import com.example.work.SettingBlankFragment;
import com.example.work.WeChatBlankFragment;public class MainActivity extends AppCompatActivity implements View.OnClickListener{private Fragment mTab01 = new WeChatBlankFragment();private Fragment mTab02 = new ContactBlankFragment();private Fragment mTab03 = new MeBlankFragment();private Fragment mTab04 = new SettingBlankFragment();private ImageButton mImgMessage;private ImageButton mImgFriend;private ImageButton mImgAddress;private ImageButton mImgSetting;private FragmentManager fm;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.activity_main);initView();initFragment();initEvent();setSelect(0);}private void setSelect(int i) {FragmentTransaction transaction = fm.beginTransaction();hideFragment(transaction);switch (i) {case 0:transaction.show(mTab01);mImgMessage.setImageResource(R.drawable.tab_weixin_pressing);break;case 1:transaction.show(mTab02);mImgFriend.setImageResource(R.drawable.tab_adress_pressing);break;case 2:transaction.show(mTab03);mImgAddress.setImageResource(R.drawable.tab_me_pressing);break;case 3:transaction.show(mTab04);mImgSetting.setImageResource(R.drawable.tab_setting_pressing);break;default:break;}transaction.commit();}private void hideFragment(FragmentTransaction transaction) {transaction.hide(mTab01);transaction.hide(mTab02);transaction.hide(mTab03);transaction.hide(mTab04);}private void initEvent() {mImgMessage.setOnClickListener(this);mImgFriend.setOnClickListener(this);mImgAddress.setOnClickListener(this);mImgSetting.setOnClickListener(this);}private void initFragment() {fm = getSupportFragmentManager();FragmentTransaction transaction = fm.beginTransaction();transaction.add(R.id.id_content,mTab01);transaction.add(R.id.id_content,mTab02);transaction.add(R.id.id_content,mTab03);transaction.add(R.id.id_content,mTab04);transaction.commit();}private void initView() {mImgMessage = findViewById(R.id.id_tab_weixin_img);mImgFriend = findViewById(R.id.id_tab_frd_img);mImgAddress = findViewById(R.id.id_tab_contact_img);mImgSetting = findViewById(R.id.id_tab_setting_img);}public void onClick(View v){Log.d("onClick","1");resetImg();switch (v.getId()){case R.id.id_tab_weixin_img:Log.d("onClick", "2");setSelect(0);break;case R.id.id_tab_frd_img:setSelect(1);break;case R.id.id_tab_contact_img:setSelect(2);break;case R.id.id_tab_setting_img:setSelect(3);break;default:break;}}private void resetImg() {mImgMessage.setImageResource(R.drawable.tab_weixin_normal);mImgFriend.setImageResource(R.drawable.tab_adress_normal);mImgAddress.setImageResource(R.drawable.tab_me_normal);mImgSetting.setImageResource(R.drawable.tab_setting_normal);}
}

最后提交一下代码仓库的地址
https://gitee.com/makiro/work/tree/57be5f3592f957a26730e6d4889ed368e3d75198