高仿微信5.2.1主界面架构 包含消息通知

首先这是转的：

转载请标明出处：http://blog.csdn.net/lmj623565791/article/details/25708045

一哥们去新疆前给了我个任务，就是整这东西，哥们回来了，赶紧做了个，哈哈，可惜没给我带切糕。

新版微信的效果，一眼看上去准备用ViewpagerIndicator来实现，但是需要在Indicator的后面添加消息通知（BadgeView），可惜没有办法自定义Indicator，最后还是自己写了个实现。

主结构:ViewPager和FragmentPagerAdapter

效果图：

1、主布局文件

<?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:background="#eee"
    android:orientation="vertical" >

    <include layout="@layout/top1"/>
    <include layout="@layout/top2"/>

    <android.support.v4.view.ViewPager
        android:id="@+id/id_viewpager"
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:layout_weight="1" >
    </android.support.v4.view.ViewPager>


</LinearLayout>

2、top2.xml

<?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="wrap_content"
    android:orientation="vertical" >

    <LinearLayout
        android:id="@+id/lllayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <LinearLayout
            android:id="@+id/id_tab_liaotian_ly"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/guide_round"
            android:gravity="center"
            android:orientation="horizontal"
            android:padding="10dip" >

            <TextView
                android:id="@+id/id_liaotian"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:gravity="center"
                android:text="聊天"
                android:textColor="@color/green"
                android:textSize="15dip" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/id_tab_faxian_ly"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/guide_round"
            android:clickable="true"
            android:gravity="center"
             android:orientation="horizontal"
            android:padding="10dip"
            android:saveEnabled="false" >

            <TextView
                android:id="@+id/id_faxian"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:gravity="center"
                android:text="发现"
                android:textColor="@color/black"
                android:textSize="15dip" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/id_tab_tongxunlu_ly"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/guide_round"
            android:focusable="false"
            android:gravity="center"
             android:orientation="horizontal"
            android:padding="10dip" >

            <TextView
                android:id="@+id/id_tongxunlu"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:gravity="center"
                android:text="通讯录"
                android:textColor="@color/black"
                android:textSize="15dip" />
        </LinearLayout>
    </LinearLayout>

    <ImageView
        android:id="@+id/id_tab_line"
        android:layout_width="200dp"
        android:layout_height="wrap_content"
        android:background="@drawable/vpi__tab_selected_pressed_holo" >
    </ImageView>

</LinearLayout>

这个布局也很简单，在布局中加入了一个ImageView，这个会在程序中动态计算宽度，作为Tab的引导线。

3、主程序

package com.example.mainframework04;

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

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Gravity;
import android.widget.FrameLayout;
import android.widget.FrameLayout.LayoutParams;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.jauker.widget.BadgeView;

public class MainActivity extends FragmentActivity
{
    private ViewPager mViewPager;
    private FragmentPagerAdapter mAdapter;
    private List<Fragment> mFragments = new ArrayList<Fragment>();

    /**
     * 顶部三个LinearLayout
     */
    private LinearLayout mTabLiaotian;
    private LinearLayout mTabFaxian;
    private LinearLayout mTabTongxunlun;

    /**
     * 顶部的三个TextView
     */
    private TextView mLiaotian;
    private TextView mFaxian;
    private TextView mTongxunlu;

    /**
     * 分别为每个TabIndicator创建一个BadgeView
     */
    private BadgeView mBadgeViewforLiaotian;
    private BadgeView mBadgeViewforFaxian;
    private BadgeView mBadgeViewforTongxunlu;

    /**
     * Tab的那个引导线
     */
    private ImageView mTabLine;
    /**
     * ViewPager的当前选中页
     */
    private int currentIndex;
    /**
     * 屏幕的宽度
     */
    private int screenWidth;

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

        mViewPager = (ViewPager) findViewById(R.id.id_viewpager);

        initView();

        initTabLine();

        /**
         * 初始化Adapter
         */
        mAdapter = new FragmentPagerAdapter(getSupportFragmentManager())
        {
            @Override
            public int getCount()
            {
                return mFragments.size();
            }

            @Override
            public Fragment getItem(int arg0)
            {
                return mFragments.get(arg0);
            }
        };

        mViewPager.setAdapter(mAdapter);

        /**
         * 设置监听
         */
        mViewPager.setOnPageChangeListener(new OnPageChangeListener()
        {

            @Override
            public void onPageSelected(int position)
            {
                // 重置所有TextView的字体颜色
                resetTextView();
                switch (position)
                {
                case 0:
                    /**
                     * 设置消息通知
                     */
                    mTabLiaotian.removeView(mBadgeViewforLiaotian);
                    mBadgeViewforLiaotian.setBadgeCount(5);
                    mTabLiaotian.addView(mBadgeViewforLiaotian);
                    mLiaotian.setTextColor(getResources().getColor(R.color.green));
                    break;
                case 1:
                    /**
                     * 设置消息通知
                     */
                    mFaxian.setTextColor(getResources().getColor(R.color.green));
                    mTabFaxian.removeView(mBadgeViewforFaxian);
                    mBadgeViewforFaxian.setBadgeCount(15);
                    mTabFaxian.addView(mBadgeViewforFaxian);
                    break;
                case 2:
                    mTongxunlu.setTextColor(getResources().getColor(R.color.green));

                    break;
                }

                currentIndex = position;
            }

            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels)
            {
                /**
                 * 利用position和currentIndex判断用户的操作是哪一页往哪一页滑动
                 * 然后改变根据positionOffset动态改变TabLine的leftMargin
                 */
                if (currentIndex == 0 && position == 0)// 0->1
                {
                    LinearLayout.LayoutParams lp = (android.widget.LinearLayout.LayoutParams) mTabLine
                            .getLayoutParams();
                    lp.leftMargin = (int) (positionOffset * (screenWidth * 1.0 / 3) + currentIndex * (screenWidth / 3));
                    mTabLine.setLayoutParams(lp);

                } else if (currentIndex == 1 && position == 0) // 1->0
                {
                    LinearLayout.LayoutParams lp = (android.widget.LinearLayout.LayoutParams) mTabLine
                            .getLayoutParams();
                    lp.leftMargin = (int) (-(1 - positionOffset) * (screenWidth * 1.0 / 3) + currentIndex
                            * (screenWidth / 3));
                    mTabLine.setLayoutParams(lp);

                } else if (currentIndex == 1 && position == 1) // 1->2
                {
                    LinearLayout.LayoutParams lp = (android.widget.LinearLayout.LayoutParams) mTabLine
                            .getLayoutParams();
                    lp.leftMargin = (int) (positionOffset * (screenWidth * 1.0 / 3) + currentIndex * (screenWidth / 3));
                    mTabLine.setLayoutParams(lp);
                } else if (currentIndex == 2 && position == 1) // 2->1
                {
                    LinearLayout.LayoutParams lp = (android.widget.LinearLayout.LayoutParams) mTabLine
                            .getLayoutParams();
                    lp.leftMargin = (int) (-(1 - positionOffset) * (screenWidth * 1.0 / 3) + currentIndex
                            * (screenWidth / 3));
                    mTabLine.setLayoutParams(lp);

                }

            }

            @Override
            public void onPageScrollStateChanged(int state)
            {
            }
        });

        mViewPager.setCurrentItem(1);

    }

    /**
     * 根据屏幕的宽度，初始化引导线的宽度
     */
    private void initTabLine()
    {
        mTabLine = (ImageView) findViewById(R.id.id_tab_line);
        DisplayMetrics outMetrics = new DisplayMetrics();
        getWindow().getWindowManager().getDefaultDisplay().getMetrics(outMetrics);
        screenWidth = outMetrics.widthPixels;
        LinearLayout.LayoutParams lp = (android.widget.LinearLayout.LayoutParams) mTabLine.getLayoutParams();
        lp.width = screenWidth / 3;
        mTabLine.setLayoutParams(lp);
    }

    /**
     * 重置颜色
     */
    protected void resetTextView()
    {
        mLiaotian.setTextColor(getResources().getColor(R.color.black));
        mFaxian.setTextColor(getResources().getColor(R.color.black));
        mTongxunlu.setTextColor(getResources().getColor(R.color.black));
    }

    /**
     * 初始化控件，初始化Fragment
     */
    private void initView()
    {

        mTabLiaotian = (LinearLayout) findViewById(R.id.id_tab_liaotian_ly);
        mTabFaxian = (LinearLayout) findViewById(R.id.id_tab_faxian_ly);
        mTabTongxunlun = (LinearLayout) findViewById(R.id.id_tab_tongxunlu_ly);

        mLiaotian = (TextView) findViewById(R.id.id_liaotian);
        mFaxian = (TextView) findViewById(R.id.id_faxian);
        mTongxunlu = (TextView) findViewById(R.id.id_tongxunlu);

        MainTab01 tab01 = new MainTab01();
        MainTab02 tab02 = new MainTab02();
        MainTab03 tab03 = new MainTab03();
        mFragments.add(tab01);
        mFragments.add(tab02);
        mFragments.add(tab03);

        mBadgeViewforFaxian = new BadgeView(this);
        mBadgeViewforLiaotian = new BadgeView(this);
        mBadgeViewforTongxunlu = new BadgeView(this);
    }
}

主要就是为ViewPager设置 FragmentPagerAdapter，然后添加切换的监听，生成BadgeView，这里没有使用 BadgeView.setTargetView(targetView)，因为我希望通知显示在文本的后面，setTargetView可能只能设置显 示位置为目标控件的内部位置。

再次就是TabLine的跟随手指的效果，首先会根据Tab页的数量 为TabLine设置宽度，然后在onPageScrolled中根据position，positionOffset，currentIndex，判断 用户当前手指滑动的方向，然后根据positionOffset这个百分比乘以TabLine的宽度，动态设置TabLine的leftMargin实现 跟随手指移动的效果。

4、每个Fragment的代码

package com.example.mainframework04;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class MainTab01 extends Fragment
{

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
    {
        return  inflater.inflate(R.layout.main_tab_01, container, false);

    }

}

3个标签页基本一致，不重复贴了。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/ly_main_weixin"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#fcfcfc"
    android:orientation="vertical" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:gravity="center"
        android:text="this is first tab !"
        android:textColor="#000000"
        android:textSize="30sp"
        />

</LinearLayout>

Fragment的布局文件，同样三个基本一致。

好了，结束，看起来挺复杂，实现起来还可以。代码写得比较仓促，有啥不足地方请指出来。最后求留言，求赞~

源码点击下载

包含BadgeView的完整代码点击下载