當選擇tablayout

public class MainActivity extends AppCompatActivity { 

    private Toolbar toolbar; 
    private TabLayout tabLayout; 
    private ViewPager viewPager; 
    private int[] tabIcons = { 
      R.drawable.tab_1, 
      R.drawable.tab_2, 
      R.drawable.tab_3, 
      R.drawable.tab_4, 
      R.drawable.tab_5, 
      R.drawable.tab_6, 
      R.drawable.tab_7, 
      R.drawable.tab_8, 
      R.drawable.tab_9, 
      R.drawable.tab_10, 
      R.drawable.tab_11, 
      R.drawable.tab_12, 
      R.drawable.tab_13, 
      R.drawable.tab_14, 
      R.drawable.tab_15, 
      R.drawable.tab_16, 
      R.drawable.tab_17 


    }; 

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

     toolbar =(Toolbar)findViewById(R.id.toolbar); 
     setSupportActionBar(toolbar); 
     getSupportActionBar().setDefaultDisplayHomeAsUpEnabled(true); 

     viewPager = (ViewPager)findViewById(R.id.viewpager); 
     setupViewPager(viewPager); 

     tabLayout=(TabLayout)findViewById(R.id.tabs); 
     tabLayout.setupWithViewPager(viewPager); 
     setupTabIcons(); 

    } 




    private void setupTabIcons() { 
     tabLayout.getTabAt(0).setIcon(tabIcons[0]); 
     tabLayout.getTabAt(1).setIcon(tabIcons[1]); 
     tabLayout.getTabAt(2).setIcon(tabIcons[2]); 
     tabLayout.getTabAt(3).setIcon(tabIcons[3]); 
     tabLayout.getTabAt(4).setIcon(tabIcons[4]); 
     tabLayout.getTabAt(5).setIcon(tabIcons[5]); 
     tabLayout.getTabAt(6).setIcon(tabIcons[6]); 
     tabLayout.getTabAt(7).setIcon(tabIcons[7]); 
     tabLayout.getTabAt(8).setIcon(tabIcons[8]); 
     tabLayout.getTabAt(9).setIcon(tabIcons[9]); 
     tabLayout.getTabAt(10).setIcon(tabIcons[10]); 
     tabLayout.getTabAt(11).setIcon(tabIcons[11]); 
     tabLayout.getTabAt(12).setIcon(tabIcons[12]); 
     tabLayout.getTabAt(13).setIcon(tabIcons[13]); 
     tabLayout.getTabAt(14).setIcon(tabIcons[14]); 
     tabLayout.getTabAt(15).setIcon(tabIcons[15]); 
     tabLayout.getTabAt(16).setIcon(tabIcons[16]); 



    } 





    private void setupViewPager(ViewPager viewPager) { 
     ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager()); 
     adapter.addFragment(new OneFragment()); 
     adapter.addFragment(new TwoFragment()); 
     // adapter.addFragment(new ThreeFragment(),"THREE"); 
     adapter.addFragment(new ThreeFragment()); 
     adapter.addFragment(new FourFragment()); 
     adapter.addFragment(new FiveFragment()); 
     adapter.addFragment(new SixFragment()); 
     adapter.addFragment(new SevenFragment()); 
     adapter.addFragment(new EightFragment()); 
     adapter.addFragment(new NineFragment()); 
     adapter.addFragment(new TenFragment()); 

     adapter.addFragment(new ElevenFragment()); 
     adapter.addFragment(new TwelveFragment()); 
     adapter.addFragment(new ThirteenFragment()); 
     adapter.addFragment(new FourteenFragment()); 
     adapter.addFragment(new FifteenFragment()); 
     adapter.addFragment(new SixteenFragment()); 
     adapter.addFragment(new SeventeenFragment()); 

     viewPager.setAdapter(adapter); 


    } 


    class ViewPagerAdapter extends FragmentPagerAdapter{ 
     private final List<Fragment> mFragmentList = new ArrayList<>(); 
     // private final List<String> mFragmentTitleList = new ArrayList<>(); 

     public ViewPagerAdapter(FragmentManager fm) { 
      super(fm); 
     } 

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

     } 


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

     public void addFragment(Fragment fragment) { 
      mFragmentList.add(fragment); 
      // mFragmentTitleList.add(title); 
     } 

     @Override 
    public CharSequence getPageTitle(int position) { 
     //return mFragmentTitleList.get(position); 
      return null; 
    } 
} 


}

我想改變特定標籤的圖標點擊特定的標籤時或片段刷卡當選擇tablayout

來源

2017-06-02 user3578882

你試過使用tabLayout.getTabAt（0）.setIcon（tabIcons [0]）;在ViewPager的addOnPageChangeListener監聽器中？ –

你檢查我的答案了嗎？ –

創建這樣

圖標選擇選項卡如何更改標籤的圖標

<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
<item android:state_selected="true" android:drawable="@drawable/icon_dashboard_active"/> 
<item android:state_pressed="true" android:drawable="@drawable/icon_dashboard_active" /> 
<item android:drawable="@drawable/icon_dashboard" /> <!--<normal>-->

和標籤圖標使用可繪製的，而不是你正在使用的人。注意：你必須爲你想要的選擇要顯示圖標創建一個選擇，然後再取消

來源

2017-06-02 05:55:53

你有什麼例子嗎？ – user3578882

http://www.compiletimerror.com/2014/03/android-button-selector-tutorial-with.html創建可繪製選擇器的示例。爲示例中顯示的所有圖標創建選擇器，然後更改int [] tabIcons –

您應該使用addOnPageChangeListener

添加將調用監聽器每當頁變化或是遞增滾動的。

viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() 
{ 
     public void onPageScrollStateChanged(int state) { 
     } 

     public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { 
     } 

     public void onPageSelected(int position) { 
      Log.i("TAG", "position: " + position); 
      switch (position) { 
       case 0: 
        // CODE HERE 
        tabLayout.getTabAt(0).setIcon(tabIcons[0]); 
        break; 
       case 1: 
        // CODE HERE 
        tabLayout.getTabAt(0).setIcon(tabIcons[1]); 
        break; 
       case 2: 
        // CODE HERE 
        tabLayout.getTabAt(0).setIcon(tabIcons[2]); 
        break; 
      } 
     } 
});

來源

2017-06-02 05:57:20

tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() { 
      @Override 
      public void onTabSelected(TabLayout.Tab tab) { 

      tab.setIcon(tabIconsSelected[tab.getPosition()]); 

      } 

      @Override 
      public void onTabUnselected(TabLayout.Tab tab) { 
     tab.setIcon(tabIconsUnSelected[tab.getPosition()]); 
       } 
      } 

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

      } 
     });

您可以使用此way.Simply更改圖標點擊特定的標籤時。 tabIconsSelected和tabIconsUnSelected是包含特定圖像的ID的int數組

來源

2017-06-02 06:03:14

當選擇tablayout

回答

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