Android仿微信界面--使用Fragment实现(慕课网笔记)

2022-08-25 14:33:52

1 效果图

这里我们没有实现滑动切换view的功能
2 具体实现：
2.1 布局文件:top.xml, bottom.xml,tab01.xml,tab02.xml,tab03.xml,tab04.xml
具体请参考上述博客
2.2 新建4个Fragment，WeixinFragment，FrdFragment,AddressFragment,SettingFragment，分别对应tab01.xml,tab02.xml,tab03.xml,tab04.xml，其中这个Fragment是android.support.v4.app下面的（为了更好的兼容低版本的安卓设备），此时注意，以下凡是用到的Fragment都要是android.support.v4.app下的，这样不易出问题。
WeixinFragment

package com.example.imooc_weixinfragment;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

public class WeixinFragment extends Fragment {

    @Override

    public View onCreateView(LayoutInflater inflater, ViewGroup container,

            Bundle savedInstanceState) {

        //引入我们的布局

        return inflater.inflate(R.layout.tab01, container, false);

    }

}

FrdFragment

package com.example.imooc_weixinfragment;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

public class FrdFragment extends Fragment {

    @Override

    public View onCreateView(LayoutInflater inflater, ViewGroup container,

            Bundle savedInstanceState) {

        //引入我们的布局

        return inflater.inflate(R.layout.tab02, container, false);

    }

}

AddressFragment

package com.example.imooc_weixinfragment;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

public class AddressFragment extends Fragment {

    @Override

    public View onCreateView(LayoutInflater inflater, ViewGroup container,

            Bundle savedInstanceState) {

        //引入我们的布局

        return inflater.inflate(R.layout.tab03, container, false);

    }

}

SettingFragment

package com.example.imooc_weixinfragment;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

public class SettingFragment extends Fragment {

    @Override

    public View onCreateView(LayoutInflater inflater, ViewGroup container,

            Bundle savedInstanceState) {

        //引入我们的布局

        return inflater.inflate(R.layout.tab04, container, false);

    }

}

activity_main.xml，这里我们使用FrameLayout代替viewPager

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    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_weight=""

        android:layout_width="match_parent"

        android:layout_height="0dp">

    </FrameLayout>

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

</LinearLayout>

2.3 MainActivity

package com.example.imooc_weixinfragment;

import android.app.Activity;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.support.v4.app.FragmentActivity;

import android.support.v4.app.FragmentManager;

import android.support.v4.app.FragmentTransaction;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.Window;

import android.view.View.OnClickListener;

import android.widget.ImageButton;

import android.widget.LinearLayout;

//我们使用的是android v4包下的fragment,这里必须要继承自FragmentActivity，而不是Activity

public class MainActivity extends FragmentActivity implements OnClickListener{

    //底部的4个导航控件

    private LinearLayout mTabWeixin;

    private LinearLayout mTabFrd;

    private LinearLayout mTabAddress;

    private LinearLayout mTabSetting;

    //底部4个导航控件中的图片按钮

    private ImageButton mImgWeixin;

    private ImageButton mImgFrd;

    private ImageButton mImgAddress;

    private ImageButton mImgSetting;

    //初始化4个Fragment

    private Fragment tab01;

    private Fragment tab02;

    private Fragment tab03;

    private Fragment tab04;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        requestWindowFeature(Window.FEATURE_NO_TITLE);

        setContentView(R.layout.activity_main);

        initView();//初始化所有的view

        initEvents();

        setSelect();//默认显示微信聊天界面

    }

    private void initEvents() {

        mTabWeixin.setOnClickListener(this);

        mTabFrd.setOnClickListener(this);

        mTabAddress.setOnClickListener(this);

        mTabSetting.setOnClickListener(this);

    }

    private void initView() {

        mTabWeixin = (LinearLayout)findViewById(R.id.id_tab_weixin);

        mTabFrd = (LinearLayout)findViewById(R.id.id_tab_frd);

        mTabAddress = (LinearLayout)findViewById(R.id.id_tab_address);

        mTabSetting = (LinearLayout)findViewById(R.id.id_tab_setting);

        mImgWeixin = (ImageButton)findViewById(R.id.id_tab_weixin_img);

        mImgFrd = (ImageButton)findViewById(R.id.id_tab_frd_img);

        mImgAddress = (ImageButton)findViewById(R.id.id_tab_address_img);

        mImgSetting = (ImageButton)findViewById(R.id.id_tab_setting_img);

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.

        getMenuInflater().inflate(R.menu.main, menu);

        return true;

    }

    @Override

    public boolean onOptionsItemSelected(MenuItem item) {

        // Handle action bar item clicks here. The action bar will

        // automatically handle clicks on the Home/Up button, so long

        // as you specify a parent activity in AndroidManifest.xml.

        int id = item.getItemId();

        if (id == R.id.action_settings) {

            return true;

        }

        return super.onOptionsItemSelected(item);

    }

    @Override

    public void onClick(View v) {

        resetImg();

        switch (v.getId()) {

        case R.id.id_tab_weixin://当点击微信按钮时，切换图片为亮色，切换fragment为微信聊天界面

            setSelect();

            break;

        case R.id.id_tab_frd:

            setSelect();

            break;

        case R.id.id_tab_address:

            setSelect();

            break;

        case R.id.id_tab_setting:

            setSelect();

            break;

        default:

            break;

        }

    }

    /*

     * 将图片设置为亮色的；切换显示内容的fragment

     * */

    private void setSelect(int i) {

        FragmentManager fm = getSupportFragmentManager();

        FragmentTransaction transaction = fm.beginTransaction();//创建一个事务

        hideFragment(transaction);//我们先把所有的Fragment隐藏了，然后下面再开始处理具体要显示的Fragment

        switch (i) {

        case :

            if (tab01 == null) {

                tab01 = new WeixinFragment();

                /*

                 * 将Fragment添加到活动中，public abstract FragmentTransaction add (int containerViewId, Fragment fragment)

                *containerViewId即为Optional identifier of the container this fragment is to be placed in. If 0, it will not be placed in a container.

                 * */

                transaction.add(R.id.id_content, tab01);//将微信聊天界面的Fragment添加到Activity中

            }else {

                transaction.show(tab01);

            }

            mImgWeixin.setImageResource(R.drawable.tab_weixin_pressed);

            break;

        case :

            if (tab02 == null) {

                tab02 = new FrdFragment();

                transaction.add(R.id.id_content, tab02);

            }else {

                transaction.show(tab02);

            }

            mImgFrd.setImageResource(R.drawable.tab_find_frd_pressed);

            break;

        case :

            if (tab03 == null) {

                tab03 = new AddressFragment();

                transaction.add(R.id.id_content, tab03);

            }else {

                transaction.show(tab03);

            }

            mImgAddress.setImageResource(R.drawable.tab_address_pressed);

            break;

        case :

            if (tab04 == null) {

                tab04 = new SettingFragment();

                transaction.add(R.id.id_content, tab04);

            }else {

                transaction.show(tab04);

            }

            mImgSetting.setImageResource(R.drawable.tab_settings_pressed);

            break;

        default:

            break;

        }

        transaction.commit();//提交事务

    }

    /*

     * 隐藏所有的Fragment

     * */

    private void hideFragment(FragmentTransaction transaction) {

        if (tab01 != null) {

            transaction.hide(tab01);

        }

        if (tab02 != null) {

            transaction.hide(tab02);

        }

        if (tab03 != null) {

            transaction.hide(tab03);

        }

        if (tab04 != null) {

            transaction.hide(tab04);

        }

    }

    private void resetImg() {

        mImgWeixin.setImageResource(R.drawable.tab_weixin_normal);

        mImgFrd.setImageResource(R.drawable.tab_find_frd_normal);

        mImgAddress.setImageResource(R.drawable.tab_address_normal);

        mImgSetting.setImageResource(R.drawable.tab_settings_normal);

    }

}

源码在这里：http://download.csdn.net/detail/hnyzwtf/9356533

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