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

• 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);
      }
  }