如何开始片段2而不是片段1在视图寻呼机

Question

你好我正在一个android应用程序有一个视图分页器和三个片段，默认情况下，应用程序在片段1上启动，但我希望它启动在片段2上。我如何在android中做到这一点？

继承人我viewpager代码：

package com.learn2crack.tab; 

import android.support.v4.app.Fragment; 
import android.support.v4.app.FragmentManager; 
import android.support.v4.app.FragmentPagerAdapter; 
import android.support.v4.app.FragmentStatePagerAdapter; 

public class TabPagerAdapter extends FragmentPagerAdapter { 
    // Declare the number of ViewPager pages 
     final int PAGE_COUNT = 3; 

    public TabPagerAdapter(FragmentManager fm) { 
     super(fm); 
     // TODO Auto-generated constructor stub 
    } 

    @Override 
    public Fragment getItem(int arg) { 
     switch (arg) { 
     case 0: 
      //Fragement for Calculator 
      return new FragmentTab1(); 
     case 1: 
      //Fragment for Calender 
      return new FragmentTab2(); 
     case 2: 
      //Fragment for Phone 
      return new FragmentTab3(); 
     } 
     return null; 

    } 

    @Override 
    public int getCount() { 
     // TODO Auto-generated method stub 
     return PAGE_COUNT; 
    } 


    } 

，如果你需要我的继承人的主要活动：

package com.learn2crack.tab; 

import android.os.Bundle; 
import android.app.ActionBar; 
import android.app.FragmentTransaction; 
import android.content.ComponentName; 
import android.content.Intent; 
import android.content.pm.ActivityInfo; 
import android.support.v4.app.FragmentActivity; 
import android.support.v4.view.ViewPager; 
import android.view.View; 
import android.view.Window; 


import com.d4a.tobias1.R; 
import com.learn2crack.pager.Launchalot; 

public class MainActivity extends FragmentActivity { 
    ViewPager Tab; 
    TabPagerAdapter TabAdapter; 
    ActionBar actionBar; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     getWindow().requestFeature(Window.FEATURE_ACTION_BAR); 
     getActionBar().hide(); 
     setRequestedOrientation (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); 
     setContentView(R.layout.activity_main); 

     TabAdapter = new TabPagerAdapter(getSupportFragmentManager()); 

     Tab = (ViewPager)findViewById(R.id.pager); 
     Tab.setOnPageChangeListener(
       new ViewPager.SimpleOnPageChangeListener() { 
        @Override 
        public void onPageSelected(int position) { 

         actionBar = getActionBar(); 
         actionBar.setSelectedNavigationItem(position);     } 
       }); 
     Tab.setAdapter(TabAdapter); 

     actionBar = getActionBar(); 
     //Enable Tabs on Action Bar 
     actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); 
     ActionBar.TabListener tabListener = new ActionBar.TabListener(){ 

      @Override 
      public void onTabReselected(android.app.ActionBar.Tab tab, 
        FragmentTransaction ft) { 
       // TODO Auto-generated method stub 

      } 

      @Override 
      public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) { 

       Tab.setCurrentItem(tab.getPosition()); 
      } 

      @Override 
      public void onTabUnselected(android.app.ActionBar.Tab tab, 
        FragmentTransaction ft) { 
       // TODO Auto-generated method stub 

      }}; 
      //Add New Tab 
      actionBar.addTab(actionBar.newTab().setTabListener(tabListener)); 
      actionBar.addTab(actionBar.newTab().setTabListener(tabListener)); 
      actionBar.addTab(actionBar.newTab().setTabListener(tabListener)); 

    } 
    /** Called when the user clicks the apps button */ 
    public void apps(View view) { 
     Intent myIntent1 = new Intent(MainActivity.this, Launchalot.class); 
    // Intent myIntent1 = new Intent(MainActivity.this, Main.class); 
     MainActivity.this.startActivity(myIntent1); 
    } 


    /** Called when the user clicks the notes button */ 
    public void notes(View view) { 
     Intent intent = new Intent(Intent.ACTION_MAIN); 
     intent.setComponent(new ComponentName("com.d4a.notes","com.example.note.NoteList")); 
     intent.putExtra("grace", "Hi"); 
     startActivity(intent); 


    } 

    /** Called when the user clicks the play button */ 
    public void play(View view) { 
     Intent launchIntent = getPackageManager().getLaunchIntentForPackage("com.android.vending"); 
     startActivity(launchIntent); 
     } 



    /** Called when the user clicks the web button */ 
    public void web(View view) { 
     Intent intent = new Intent(Intent.ACTION_MAIN); 
     intent.setComponent(new ComponentName("com.d4a.pegasus","acr.browser.barebones.activities.BrowserActivity")); 
     intent.putExtra("grace", "Hi"); 
     startActivity(intent); 

    } 

     /** Called when the user clicks the email button */ 
public void email(View view) { 
     Intent intent = new Intent(Intent.ACTION_MAIN); 
     intent.setComponent(new ComponentName("com.d4a.eMailTime","com.fsck.k9.activity.Accounts")); 
     intent.putExtra("grace", "Hi"); 
     startActivity(intent); 

} 

/** Called when the user clicks the sms button */ 
public void chat(View view) { 
    Intent intent = new Intent(Intent.ACTION_MAIN); 
    intent.setComponent(new ComponentName("com.d4a.sms","de.ub0r.android.smsdroid.ConversationListActivity")); 
    intent.putExtra("grace", "Hi"); 
    startActivity(intent); 


} 



} 

任何帮助将是惊人的

在此先感谢！

Answer 1

您是否试过调用tab.setCurrentItem（1）;在onCreate（）结束？