Android高仿网易新闻客户端之首页

关于实现网易新闻客户端的界面,以前写过很多博客,请参考:

Android实现网易新闻客户端效果

Android实现网易新闻客户端侧滑菜单(一)

Android实现网易新闻客户端侧滑菜单(二)

今天用ViewPager + FragmentAdapter + ViewPagerIndicator来实现。

ViewPagerIndicator是一款分页指标小部件兼容ViewPager,封装上做得非常不错,目前已为众多知名应用所使用。具体API的使用,大家可以下载官方demo示例研究研究就知道啦!

下载地址:https://github.com/JakeWharton/ViewPagerIndicator

sample是提供给我们的例子,library是库工程,我们需要将其作为我们自己项目的依赖库,我们新建一个Android工程,将library导入工程我就不介绍了。

注:Eclipse: 如果你新建的项目libs目录下面有android-support-v4.jar,你要将其删除,因为ViewPageIndicator里面有这个库,我们项目中不允许两个android-support-v4.jar,不删除我们的项目不能编译的。

Android Studio: 直接import module就行。

activity_main.xml

<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/activity_top" />

    <com.viewpagerindicator.TabPageIndicator
        android:id="@+id/indicator"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@android:color/transparent" >
    </com.viewpagerindicator.TabPageIndicator>

    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#EEF3FA">
    </android.support.v4.view.ViewPager>
</LinearLayout>
布局很简单,顶部引入了一个activity_top.xml的布局,具体内容可以自己定义。

MainActivity.java

package com.jackie.neteasenews;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;

import com.viewpagerindicator.TabPageIndicator;

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

public class MainActivity extends FragmentActivity {
    private TabPageIndicator mTabPageIndicator;
    private ViewPager mViewPager;
    private ViewPagerIndicatorAdapter mAdapter;

    private HeadlineFragment mHeadlineFragment;
    private EnjoyFragment mEnjoyFragment;
    private HotspotFragment mHotspotFragment;
    private SportFragment mSportFragment;
    private HouseFragment mHouseFragment;
    private List<Fragment> mFragmentList;

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

        initView();
    }

    private void initView() {
        mTabPageIndicator = (TabPageIndicator) findViewById(R.id.indicator);
        mViewPager = (ViewPager) findViewById(R.id.viewpager);

        mHeadlineFragment = new HeadlineFragment();
        mEnjoyFragment = new EnjoyFragment();
        mHotspotFragment = new HotspotFragment();
        mSportFragment = new SportFragment();
        mHouseFragment = new HouseFragment();

        mFragmentList = new ArrayList<>();
        mFragmentList.add(mHeadlineFragment);
        mFragmentList.add(mEnjoyFragment);
        mFragmentList.add(mHotspotFragment);
        mFragmentList.add(mSportFragment);
        mFragmentList.add(mHouseFragment);

        mAdapter = new ViewPagerIndicatorAdapter(getSupportFragmentManager(), mFragmentList);
        mViewPager.setAdapter(mAdapter);

        //实例化TabPageIndicator然后设置ViewPager与之关联
        mTabPageIndicator.setViewPager(mViewPager, 1);
    }
}
ViewPagerIndicatorAdapter.java
package com.jackie.neteasenews;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

import java.util.List;

public class ViewPagerIndicatorAdapter extends FragmentPagerAdapter {
    private List<Fragment> mFragmentList;

    public static String[] TITLES = new String[] { "头条", "娱乐", "热点", "体育", "房产" };

    public ViewPagerIndicatorAdapter(FragmentManager fm, List<Fragment> fragmentList) {
        super(fm);
        this.mFragmentList = fragmentList;
    }

    @Override
    public Fragment getItem(int position) {
        return mFragmentList.get(position);
    }

    @Override
    public int getCount() {
        return mFragmentList.size();
    }

    @Override
    public CharSequence getPageTitle(int position) {
        return TITLES[position];
    }
}
代码很简单,但是有一点,上面的Indicator是系统默认的,不太好看,所以还需要在styles.xml添加下面的样式:

<style name="StyledTabPageIndicator" parent="@android:style/Theme.Light">
        <item name="vpiTabPageIndicatorStyle">@style/CustomTabPageIndicator</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:animationDuration">5000</item>
        <item name="android:windowContentOverlay">@null</item>
  </style>

  <style name="CustomTabPageIndicator" parent="Widget">
        <item name="android:gravity">center</item>
        <item name="android:background">@drawable/tab_indicator</item>
        <!--<item name="android:background">@drawable/vpi__tab_indicator</item>-->
        <item name="android:paddingLeft">22dip</item>
        <item name="android:paddingRight">22dip</item>
        <item name="android:paddingTop">8dp</item>
        <item name="android:paddingBottom">8dp</item>
        <item name="android:textAppearance">@style/CustomTabPageIndicator.Text</item>
        <item name="android:textSize">16sp</item>
        <item name="android:maxLines">1</item>
   </style>

  <style name="CustomTabPageIndicator.Text" parent="Widget">
        <item name="android:textColor">@drawable/tab_text</item>
  </style>

注意:开发中过程中跟Fragment相关的类,导入包时会提示两个包android.app 和 android.support.v4.app,切记,要保证所有类都导入同一个包下的,否则会编译报错。

效果图如下:

Android高仿网易新闻客户端之首页_第1张图片

附上源码地址:

https://github.com/shineflower/NeteaseNews.git




你可能感兴趣的:(Android高仿网易新闻客户端之首页)