Android Material风格的应用(一)--AppBar TabLayout

打造Material风格的Android应用

Android Material风格的应用(一)--AppBar TabLayout
Android Material风格的应用(二)--RecyclerView
Android Material风格的应用(三)--DrawerLayout
Android Material风格的应用(四)--FloatActionButton
Android Material风格的应用(五)--CollapsingToolbar

开发环境：

• JDK 8+
• Android Studio 2.2.2
  工程源码

Themes And Colors

主题颜色值 res/values/colors.xml

  <resources>
    <color name="colorPrimary">#3F51B5</color>
    <color name="colorPrimaryDark">#303F9F</color>
    <color name="colorAccent">#FF4081</color>
  </resources>

如此，添加一个Light主题风格的style res/values/styles.xml

  <style name="AppThemeBase" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
  </style>

使用 parent="Theme.AppCompat.Light.NoActionBar" 是在应用中去除ActionBar运行效果图

布局和动画

TabLayout

• 添加 Toolbar
  在res/layout/activity_main.xml和MainActivity.java中添加toolbar，这里使用CoordinatorLayout作为一个容器
  里面会包含TabLayout FloatingActionButton Toolbar等，引入design的支持库

  compile 'com.android.support:design:24.2.1'

  activity_main.xml

  <android.support.design.widget.CoordinatorLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:id="@+id/main_content">
  
  <android.support.design.widget.AppBarLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:id="@+id/app_bar_layout"
      android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
      <android.support.v7.widget.Toolbar
          android:layout_width="match_parent"
          android:layout_height="?attr/actionBarSize"
          android:id="@+id/toolbar"
          app:layout_scrollFlags="enterAlways|scroll"
          app:popupTheme="@style/ThemeOverlay.AppCompat.Light"></android.support.v7.widget.Toolbar>
  
      <android.support.design.widget.TabLayout
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:id="@+id/tabs">
       </android.support.design.widget.TabLayout>
      </TableLayout>
  </android.support.design.widget.AppBarLayout>
  
  </android.support.design.widget.CoordinatorLayout>

  MainActivity.java

  Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar);
  setSupportActionBar(toolbar);

• 添加TabLayout

  TabLayout tabLayout = (TabLayout)findViewById(R.id.tabs);
  tabLayout.addTab(tabLayout.newTab().setText("Tab 1"));
  tabLayout.addTab(tabLayout.newTab().setText("Tab 2"));
  tabLayout.addTab(tabLayout.newTab().setText("Tab 3"));

• 添加 Fragment 和 ViewPager
  在 activity_main.xml中添加ViewPager

  <android.support.v4.view.ViewPager
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:id="@+id/viewpager"
  app:layout_behavior="@string/appbar_scrolling_view_behavior">
  </android.support.v4.view.ViewPager>

  通过添加ViewPager和TabLayout联动，创建3个Fragment的类
  ListContentFragment.java TileContentFragment.java 和 CardContentFragment.java

  添加item_list.xml item_tile.xml item_card.xml

  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical" android:layout_width="match_parent"
  android:layout_height="match_parent">
  <TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="List"/>
  </LinearLayout>

  分别创建不同的Fragment文件和布局对应 ListContentFragment.java

  public class ListContentFragment extends Fragment{
  @Nullable
  @Override
  public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
      View v = inflater.inflate(R.layout.item_list,null);
      return v;
  }
  }

  TileContentFragment.java

  public class TileContentFragment extends Fragment{
  @Nullable
  @Override
  public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
      return inflater.inflate(R.layout.item_tile,null);
  }
  }

  CardContentFragment.java

  public class CardContentFragment extends Fragment{
  @Nullable
  @Override
  public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
      return inflater.inflate(R.layout.item_card,null);
  }
  }

  在MainActivity.java中添加ViewPager

  ViewPager viewPager = (ViewPager)findViewById(R.id.viewpager);
  setupViewPager(viewPager);
  
  private void setupViewPager(ViewPager viewPager){
      Adapter adapter = new Adapter(getSupportFragmentManager());
      adapter.addFragment(new ListContentFragment(),"List");
      adapter.addFragment(new TileContentFragment(),"Tile");
      adapter.addFragment(new CardContentFragment(),"Card");
      viewPager.setAdapter(adapter);
  }
  
  static class Adapter extends FragmentPagerAdapter{
    private final List<Fragment> fragmentList = new ArrayList<>();
    private final List<String> fragmentTitle = new ArrayList<>();
    public Adapter(FragmentManager fm) {
        super(fm);
    }
  
    @Override
    public Fragment getItem(int position) {
        return fragmentList.get(position);
    }
  
    @Override
    public int getCount() {
        return fragmentList.size();
    }
  
    public void addFragment(Fragment fragment,String title){
        fragmentList.add(fragment);
        fragmentTitle.add(title);
    }
  
    @Override
    public CharSequence getPageTitle(int position) {
        return fragmentTitle.get(position);
    }
  }