文章目录

• • • 一、类微信界面的功能
    • 二、top布局
    • 三、bottom布局
    • 四、中间布局
    • 五、activity_main.xml
    • 六、MainActivity
    • 七、其余Java文件（分别调用四个界面）
    • • 1.weixinFragment
      • 2.frdFragment
      • 3.contactFragment
      • 4.settingsFragment
    • 八、运行界面

一、类微信界面的功能

1.可展示出四个可切换界面：微信、朋友、通讯录、设置；
2.上方栏标题居中，界面中间显示内容，内容随下方栏的选择而切换，下方栏可点击切换，点击过的界面的图标为绿色，没有点击的界面的图标为灰色；
3.主要从top、bottom、中间布局以及MainActivity四个方面分析。

二、top布局

在res文件夹的layout中新建top.xml，将标题栏的内容居中，并将背景色调为黑色，文字调为白色。

<?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"//颜色编码都是六位
    android:orientation="vertical">

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="@string/app_name"
        android:textColor="#ffffff"
        android:textSize="20sp" />
</LinearLayout>

三、bottom布局

1.将图标文件夹粘贴到drawable中；
2.在res文件夹的layout中新建bottom.xml，拖入TextView拖入ImageButton后会调用drawable，选取所需的图标；
3.复制粘贴四个并调整水平平铺布局。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="80dp"
    android:background="@drawable/bottom_bar"
    android:orientation="horizontal"
    android:baselineAligned="false">

    <LinearLayout
        android:id="@+id/id_tab_weixin"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:gravity="center"
        android:layout_weight="1"
        android:orientation="vertical">

        <ImageButton
            android:id="@+id/id_tab_weixin_img"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="#000000"
            android:clickable="false"
            android:contentDescription="@string/app_name"
            app:srcCompat="@drawable/tab_weixin_pressed" />

        <TextView
            android:id="@+id/textView1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:text="微信"
            android:gravity="center"
            android:textColor="#ffffff"
            android:clickable="false"
            android:textSize="15sp" />
    </LinearLayout>

    <LinearLayout
        android:id="@+id/id_tab_frd"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:gravity="center"
        android:orientation="vertical">

        <ImageButton
            android:id="@+id/id_tab_frd_img"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="#000000"
            android:clickable="false"
            android:contentDescription="@string/app_name"
            app:srcCompat="@drawable/tab_find_frd_normal" />

        <TextView
            android:id="@+id/textView2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:text="朋友"
            android:gravity="center"
            android:clickable="false"
            android:textColor="#ffffff"
            android:textSize="15sp" />
    </LinearLayout>

    <LinearLayout
        android:id="@+id/id_tab_contact"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:gravity="center"
        android:orientation="vertical">

        <ImageButton
            android:id="@+id/id_tab_contact_img"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="#000000"
            android:clickable="false"
            android:contentDescription="@string/app_name"
            app:srcCompat="@drawable/tab_address_normal" />

        <TextView
            android:id="@+id/textView3"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:text="通讯录"
            android:gravity="center"
            android:textColor="#ffffff"
            android:clickable="false"
            android:textSize="15sp" />

    </LinearLayout>

    <LinearLayout
        android:id="@+id/id_tab_settings"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:gravity="center"
        android:orientation="vertical">

        <ImageButton
            android:id="@+id/id_tab_settings_img"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="#000000"
            android:clickable="false"
            android:contentDescription="@string/app_name"
            app:srcCompat="@drawable/tab_settings_normal" />

        <TextView
            android:id="@+id/textView4"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:text="设置"
            android:gravity="center"
            android:textColor="#ffffff"
            android:clickable="false"
            android:textSize="15sp" />
    </LinearLayout>
</LinearLayout>

四、中间布局

四个tab.xml分别对应四个界面的中间内容，此处是第一个微信界面的。

<?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:gravity="center"
    android:orientation="horizontal">

    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:gravity="center"
        android:layout_weight="1"
        android:text="这是微信聊天界面"
        android:textSize="25sp" />
</LinearLayout>

五、activity_main.xml

activity_main.xml里需要加上FrameLayout(重叠布局)和include

<?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" />
    
    <FrameLayout
        android:id="@+id/id_content"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1">
        
    </FrameLayout>

    <include layout="@layout/bottom" />
</LinearLayout>

六、MainActivity

函数具体作用代码中有注释

package com.example.mywechat;

import androidx.appcompat.app.AppCompatActivity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;

import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.widget.ImageButton;
import android.widget.LinearLayout;

public class MainActivity extends AppCompatActivity implements View.OnClickListener{ 

    private LinearLayout mTabweixin;
    private LinearLayout mTabfrd;
    private LinearLayout mTabcontact;
    private LinearLayout mTabsetting;

    private ImageButton mImgWeixin;
    private ImageButton mImgFrd;
    private ImageButton mImgcontact;
    private ImageButton mImgSettings;

    private Fragment mTab05;
    private Fragment mTab01 = new weixinFragment();
    private Fragment mTab02 = new frdFragment();
    private Fragment mTab03 = new contactFragment();
    private Fragment mTab04 = new settingsFragment();

    private FragmentManager fm;

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

        initView();
        initEvent();
        initFragment();
        selectfragment(0);
    }

    private void initFragment(){ 
    //fragment的切换
        fm = getFragmentManager();
        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 initEvent(){ 
        mTabweixin.setOnClickListener(this);
        mTabfrd.setOnClickListener(this);
        mTabcontact.setOnClickListener(this);
        mTabsetting.setOnClickListener(this);
    }

    private void initView() { 
    //改变图标的颜色
        mTabweixin = (LinearLayout)findViewById(R.id.id_tab_weixin);
        mTabfrd = (LinearLayout)findViewById(R.id.id_tab_frd);
        mTabcontact = (LinearLayout)findViewById(R.id.id_tab_contact);
        mTabsetting = (LinearLayout)findViewById(R.id.id_tab_settings);

        mImgWeixin = (ImageButton)findViewById(R.id.id_tab_weixin_img);
        mImgFrd = (ImageButton) findViewById(R.id.id_tab_frd_img);
        mImgcontact = (ImageButton)findViewById(R.id.id_tab_contact_img);
        mImgSettings = (ImageButton)findViewById(R.id.id_tab_settings_img);
    }

    private void selectfragment(int i){ 
    //显示选中界面的内容，选中界面图标为绿色
        FragmentTransaction transaction = fm.beginTransaction();
        hideFragment(transaction);
        switch (i){ 
            case 0:
                Log.d("setSelect","1");
                transaction.show(mTab01);
                mImgWeixin.setImageResource(R.drawable.tab_weixin_pressed);
                break;
            case 1:
                transaction.show(mTab02);
                mImgFrd.setImageResource(R.drawable.tab_find_frd_pressed);
                break;
            case 2:
                transaction.show(mTab03);
                mImgcontact.setImageResource(R.drawable.tab_address_pressed);
                break;
            case 3:
                transaction.show(mTab04);
                mImgSettings.setImageResource(R.drawable.tab_settings_pressed);
                break;
            default:
                break;
        }
        transaction.commit();
    }

    private void hideFragment(FragmentTransaction transaction) { 
    //把没有使用的界面的内容隐藏
        transaction.hide(mTab01);
        transaction.hide(mTab02);
        transaction.hide(mTab03);
        transaction.hide(mTab04);
    }

    @Override
    public void onClick(View view) { 
    //监听函数，监听到底是哪一个图标被击中从而显示哪一个界面的内容
        resetimg();
        switch (view.getId()){ 
            case R.id.id_tab_weixin:
                selectfragment(0);
                break;
            case R.id.id_tab_frd:
                selectfragment(1);
                break;
            case R.id.id_tab_contact:
                selectfragment(2);
                break;
            case R.id.id_tab_settings:
                selectfragment(3);
                break;
        }
    }

    public void resetimg(){ 
    //没有使用的界面的图标为灰色
        mImgWeixin.setImageResource(R.drawable.tab_weixin_normal);
        mImgFrd.setImageResource(R.drawable.tab_find_frd_normal);
        mImgcontact.setImageResource(R.drawable.tab_address_normal);
        mImgSettings.setImageResource(R.drawable.tab_settings_normal);
    }
}

七、其余Java文件（分别调用四个界面）

1.weixinFragment

package com.example.mywechat;

import android.os.Bundle;

import android.app.Fragment;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;


public class weixinFragment extends Fragment { 

    // TODO: Rename parameter arguments, choose names that match
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
    private static final String ARG_PARAM1 = "param1";
    private static final String ARG_PARAM2 = "param2";

    // TODO: Rename and change types of parameters
    private String mParam1;
    private String mParam2;

    public weixinFragment() { 
        // Required empty public constructor
    }

    
    // TODO: Rename and change types and number of parameters
    public static weixinFragment newInstance(String param1, String param2) { 
        weixinFragment fragment = new weixinFragment();
        Bundle args = new Bundle();
        args.putString(ARG_PARAM1, param1);
        args.putString(ARG_PARAM2, param2);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState);
        if (getArguments() != null) { 
            mParam1 = getArguments().getString(ARG_PARAM1);
            mParam2 = getArguments().getString(ARG_PARAM2);
        }
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) { 
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.tab01, container, false);
    }
}

2.frdFragment

package com.example.mywechat;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import android.app.Fragment;


public class frdFragment extends Fragment { 

    // TODO: Rename parameter arguments, choose names that match
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
    private static final String ARG_PARAM1 = "param1";
    private static final String ARG_PARAM2 = "param2";

    // TODO: Rename and change types of parameters
    private String mParam1;
    private String mParam2;

    public frdFragment() { 
        // Required empty public constructor
    }

    
    // TODO: Rename and change types and number of parameters
    public static frdFragment newInstance(String param1, String param2) { 
        frdFragment fragment = new frdFragment();
        Bundle args = new Bundle();
        args.putString(ARG_PARAM1, param1);
        args.putString(ARG_PARAM2, param2);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState);
        if (getArguments() != null) { 
            mParam1 = getArguments().getString(ARG_PARAM1);
            mParam2 = getArguments().getString(ARG_PARAM2);
        }
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) { 
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.tab02, container, false);
    }
}

3.contactFragment

package com.example.mywechat;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import android.app.Fragment;


public class contactFragment extends Fragment { 

    // TODO: Rename parameter arguments, choose names that match
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
    private static final String ARG_PARAM1 = "param1";
    private static final String ARG_PARAM2 = "param2";

    // TODO: Rename and change types of parameters
    private String mParam1;
    private String mParam2;

    public contactFragment() { 
        // Required empty public constructor
    }

    
    // TODO: Rename and change types and number of parameters
    public static contactFragment newInstance(String param1, String param2) { 
        contactFragment fragment = new contactFragment();
        Bundle args = new Bundle();
        args.putString(ARG_PARAM1, param1);
        args.putString(ARG_PARAM2, param2);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState);
        if (getArguments() != null) { 
            mParam1 = getArguments().getString(ARG_PARAM1);
            mParam2 = getArguments().getString(ARG_PARAM2);
        }
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) { 
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.tab03, container, false);
    }
}

4.settingsFragment

package com.example.mywechat;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import android.app.Fragment;


public class settingsFragment extends Fragment { 

    // TODO: Rename parameter arguments, choose names that match
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
    private static final String ARG_PARAM1 = "param1";
    private static final String ARG_PARAM2 = "param2";

    // TODO: Rename and change types of parameters
    private String mParam1;
    private String mParam2;

    public settingsFragment() { 
        // Required empty public constructor
    }

    
    // TODO: Rename and change types and number of parameters
    public static settingsFragment newInstance(String param1, String param2) { 
        settingsFragment fragment = new settingsFragment();
        Bundle args = new Bundle();
        args.putString(ARG_PARAM1, param1);
        args.putString(ARG_PARAM2, param2);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState);
        if (getArguments() != null) { 
            mParam1 = getArguments().getString(ARG_PARAM1);
            mParam2 = getArguments().getString(ARG_PARAM2);
        }
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) { 
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.tab04, container, false);
    }
}

八、运行界面

源码GitHub的地址：
链接: https://github.com/GODFF556/MyWechat.