Android - 带自定义视图选项卡的tablayout - 无法应用可绘制选择器

Question

我想在gradle中使用compile'c​​om.android.support：design：25.3.1'在tablayout中设置自定义选项卡。

我想使用选择器，以便在单击某个选项卡时根据其状态进行更改。

所以我尝试了失败以下内容：

这是我的活动XML：

<ViewPager 
    android:id="@+id/pager" 
    android:layout_width="match_parent" 
    android:layout_height="0dp" 
    android:layout_weight="1" 
    android:background="@color/white"/> 

<android.support.design.widget.TabLayout 
    android:id="@+id/tabLayout" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    app:tabMode="fixed" 
    app:tabGravity="fill" 
    style="@style/MyCustomTabLayout" 
    /> 

这里是我使用的tabLayout风格：

<style name="MyCustomTabLayout" parent="Widget.Design.TabLayout"> 
     <item name="tabIndicatorColor">@android:color/transparent</item> 
    </style> 

它隐藏了下划线。

这里是我的家标签我的选择之一：

这里是自定义视图，我为每个标签：

<ImageView 
    android:id="@+id/iv_imgview" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_gravity="center" 
    tools:src="@drawable/home_tab_selector" 

    /> 

<TextView 
    android:id="@+id/tv_tab_name" 
    android:layout_gravity="center" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    tools:text="HOME" 
    /> 

和这里是创建tablayout的代码的一部分：

for (int i = 0; i < NUM_OF_TABS; i++) 
      tabLayout.addTab(tabLayout.newTab()); 

     adapter = new LandingPagerAdapter(getApplicationContext(),getSupportFragmentManager(), tabLayout.getTabCount()); 

     //Adding adapter to pager 
     viewPager.setAdapter(adapter); 

     tabLayout.addOnTabSelectedListener(this); 
     tabLayout.setupWithViewPager(viewPager); 

     // Iterate over all tabs and set the custom view 
     for (int i = 0; i < tabLayout.getTabCount(); i++) { 
      TabLayout.Tab tab = tabLayout.getTabAt(i); 
      tab.setCustomView(adapter.getTabView(i)); 
     } 

     tabLayout.getTabAt(0).select(); 

最后这里负责应用选择器和自定义视图中getTabView方法：

public class LandingPagerAdapter extends FragmentStatePagerAdapter { 

    private final Context context; 
    //integer to count number of tabs 
    int tabCount; 
    private Fragment mCurrentFragment; 

    private String[] tabTitles = new String[]{"Home", "tab2"}; 

    // configure tab icons 
    int[] imageTabResId = { 
      R.drawable.home_tab_selector, 
      R.drawable.tab_two_selector,; 

    //Constructor to the class 
    public LandingPagerAdapter(Context context, FragmentManager fm, int tabCount) { 
     super(fm); 
     this.context = context; 
     this.tabCount = tabCount; 
    } 

    @Override 
    public Fragment getItem(int position) { 
     switch (position) { 
      case 0: 
       TabHomeContainerFragment tab1 = new TabHomeContainerFragment(); 
       return tab1; 
      case 1: 
       TabTwoContainerFragment tab2 = new TabTwoContainerFragment();; //Todo: these should all be containers 
       return tab2; 
      default: 
       return null; 
     } 
    } 

    //Overriden method getCount to get the number of tabs 
    @Override 
    public int getCount() { 
     return tabCount; 
    } 

    public Fragment getCurrentFragment() { 
     return mCurrentFragment; 
    } 

    @Override 
    public void setPrimaryItem(ViewGroup container, int position, Object object) { 
     if (getCurrentFragment() != object) { 
      mCurrentFragment = ((Fragment) object); 
     } 
     super.setPrimaryItem(container, position, object); 
    } 

    @Override 
    public CharSequence getPageTitle(int position) { 
     return tabTitles[position]; 
    } 

    public View getTabView(int position) { 
     // Given you have a custom layout in `res/layout/custom_tab.xml` with a TextView and ImageView 
     View v = LayoutInflater.from(context).inflate(R.layout.custom_landingpagetab, null); 
     TextView tv = (TextView) v.findViewById(R.id.tv_tab_name); 
     tv.setText(tabTitles[position]); 
     ImageView img = (ImageView) v.findViewById(R.id.iv_imgview); 
     img.setImageDrawable(ContextCompat.getDrawable(getApplicationContext(),imageTabResId[position])); 
     return v; 
    } 

} 

通知在getTabView我将图像资源设置为类字段中数组的选择器。 但是我一直在测试的api上的设备上没有任何反应。

Answer 1

我结束了删除选择器的方法，只是从选项卡得到我的customView。那么我可以改变它的视图元素。我在一个数组中选择了一组图像并选择了另一组图像。

然后当将该翼片切换基于标签位置的图像之间i开关：

@Override 
    public void onTabSelected(TabLayout.Tab tab) { 
     viewPager.setCurrentItem(tab.getPosition()); 
     ImageView iv = (ImageView) tab.getCustomView().findViewById(R.id.iv_imgview); 
     TextView tv = (TextView) tab.getCustomView().findViewById(R.id.tv_tab_name); 

     iv.setImageDrawable(ContextCompat.getDrawable(this, imageTabResId_selected[tab.getPosition()])); 
     tv.setTextColor(ContextCompat.getColor(this, R.color.black)); 

    } 
@Override 
public void onTabUnselected(TabLayout.Tab tab) { 
    ImageView iv = (ImageView) tab.getCustomView().findViewById(R.id.iv_imgview); 
    TextView tv = (TextView) tab.getCustomView().findViewById(R.id.tv_tab_name); 

    iv.setImageDrawable(ContextCompat.getDrawable(this, imageTabResId[tab.getPosition()])); 
    tv.setTextColor(ContextCompat.getColor(this, R.color.tabs_default_text)); 

} 

@Override 
public void onTabReselected(TabLayout.Tab tab) { 

}