Question

我想知道如何向TabLayout中的每个片段添加一些不同的数据，如数组？我的意思是fragment1显示array1，fragment2显示array2，fragment3显示array3

以下是我的Tablayout代码：

public class PoshtibaniActivity extends AppCompatActivity {

private Toolbar toolbar;
private ViewPager mPager;
private SlidingTabLayout mTabs;
private TabLayout tabLayout;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_poshtibani);
    toolbar = (Toolbar) findViewById(R.id.app_bar_empty);
    //setSupportActionBar(toolbar);
    toolbar.setTitle("پشتیبانی");
    setSupportActionBar(toolbar);

    getSupportActionBar().setHomeButtonEnabled(true);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    mPager = (ViewPager) findViewById(R.id.pager);
    setupViewPager(mPager);
    mPager.setCurrentItem(2);

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

}

private void setupViewPager(ViewPager viewPager) {
    ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
    adapter.addFragment(new FragmentOne(), "پیامهای دریافتی");
    adapter.addFragment(new FragmentTwo(), "پیامهای ارسالی");
    adapter.addFragment(new FragmentThree(), "ارسال پیام");
    viewPager.setAdapter(adapter);
}

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

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

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

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

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

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

Answer 1

你应该为每个片段使用SetArguement。

private void setupViewPager(ViewPager viewPager) {
   ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
   adapter.addFragment(new FragmentOne(), "پیامهای دریافتی",MY_ARRAY_1,MY_SEC_ARRAY_1);
   adapter.addFragment(new FragmentTwo(), "پیامهای ارسالی",MY_ARRAY_2,MY_SEC_ARRAY_2);
   adapter.addFragment(new FragmentThree(), "ارسال پیام",MY_ARRAY_3,MY_SEC_ARRAY_3);
   viewPager.setAdapter(adapter);
}

然后在您的适配器中：

public void addFragment(Fragment fragment, String title,Object data,ArrayList<MY_DATA_MODEL> array2) {
    Bundle mBundle=new Bundle();
    mBundle.put("dataArray",data);
    mBundle.put("dataArray2",array2);
    fragment.setArgument(mBundle);
    mFragmentList.add(fragment);
    mFragmentTitleList.add(title);
}

现在，在每个片段中，您应该覆盖setArguments并从中获取数据。

如果您想以捆绑和意图传递数据模型，请不要忘记将数据模型设为可分割。

Answer 2

查看寻呼机文件

  public class SamplePagerAdapter extends FragmentPagerAdapter {


  String[] title = {
    "stringA",
    "stringB",
    "stringC",
  }


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

    @Override
    public Fragment getItem(int position) {
  /** Show a Fragment based on the position of the current screen */
        if (position == 0) {
            return FragmentA.newInstance(title);
        } 
         else if(position==1)
          {
            return new FragmentB.newInstance(title);
          }

         else  { return FragmentC.newInstance(title);}
    }

    @Override
    public int getCount() {
        // Show 3 total pages.
        return 3;
    }
}

片段文件

public class FragmentA extends Fragment {


public static FragmentA newInstance(String [] s) {
    FragmentA A = new FragmentA();
    Bundle args = new Bundle();
    args.putStringArrayList("elist",s);
    A.setArgumentas(args);
    return A;
}

}


 public View onCreateView(LayoutInflater inflater,
     ViewGroup containerObject,
     Bundle savedInstanceState){
     //here is your arguments
     Bundle bundle=getArguments(); 

    //here is your list array 
    String[] myStrings=bundle.getStringArray("elist");   
 }



public class FragmentB extends Fragment {


public static FragmentB newInstance(String [] s) {
    FragmentB B = new FragmentB();
    Bundle args = new Bundle();
    args.putStringArrayList("elist",s);
    B.setArgumentas(args);
    return B;
}

}


 public View onCreateView(LayoutInflater inflater,
     ViewGroup containerObject,
     Bundle savedInstanceState){
     //here is your arguments
     Bundle bundle=getArguments(); 

    //here is your list array 
    String[] myStrings=bundle.getStringArray("elist");   
 }


public class FragmentC extends Fragment {


public static FragmentC newInstance(String [] s) {
    FragmentC C = new FragmentC();
    Bundle args = new Bundle();
    args.putStringArrayList("elist",s);
    C.setArgumentas(args);
    return C;
}

}


 public View onCreateView(LayoutInflater inflater,
     ViewGroup containerObject,
     Bundle savedInstanceState){
     //here is your arguments
     Bundle bundle=getArguments(); 

    //here is your list array 
    String[] myStrings=bundle.getStringArray("elist");   
 }

如何在3个选项卡中为3个片段添加不同的数据？

2 个答案: