Android基于ViewPager Fragment实现选项卡

先给大家展示效果图：

1.新建TestFragmen继承Fragment

public class TestFragment extends Fragment {
  private static final String TAG = "TestFragment";
  private String hello;// = "hello android";
  private String defaultHello = "default value";
  private Map<string, object=""> maplist;
  static TestFragment newInstance(String s, Map<string, object=""> map) {
    TestFragment newFragment = new TestFragment();
    // Bundle bundle = new Bundle();
    // bundle.putString("hello", s);
    // newFragment.setArguments(bundle);
    final SerializableMap myMap=new SerializableMap();
    myMap.setMap(map);
    Bundle bundle = new Bundle();
    bundle.putSerializable("map", myMap);
    newFragment.setArguments(bundle);
    return newFragment;
  }
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.d(TAG, "TestFragment-----onCreate");
    Bundle args = getArguments();
   // hello = args != null ? args.getString("hello") : defaultHello;
    Bundle bundle = getArguments();
    SerializableMap serializableMap = (SerializableMap) bundle.get("map");
    maplist =serializableMap.getMap();
  }
  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
    Log.d(TAG, "TestFragment-----onCreateView");
    View view = inflater.inflate(R.layout.lay1, container, false);
    // TextView viewhello = (TextView) view.findViewById(R.id.tv_hello);
    //viewhello.setText(maplist.get("userid")+"time");
    ListView lv = (ListView) view.findViewById(R.id.listView3);
    ContactAdapter hc = new ContactAdapter(getActivity().getApplicationContext(),getContact());
    lv.setAdapter(hc);
    lv.setCacheColorHint(0);
    return view;
  }
  private ArrayList<contact> getContact(){
    ArrayList<contact> hcList = new ArrayList<contact>();
    for(int i=0;i<10;i++)
    {
    Contact c0 = new Contact();
    c0.setTxPath(R.drawable.more_game+"");
    c0.setName(maplist.get("userid")+" 年龄："+maplist.get("age"));
    hcList.add(c0);
    }
    return hcList;
  }
  @Override
  public void onDestroy() {
    super.onDestroy();
    Log.d(TAG, "TestFragment-----onDestroy");
  }
}
</contact></contact></contact></string,></string,>

2.MyFragmentPagerAdapter继承FragmentPagerAdapter

public class MyFragmentPagerAdapter extends FragmentPagerAdapter {
  private ArrayList<fragment> fragmentsList;
  public MyFragmentPagerAdapter(FragmentManager fm) {
    super(fm);
  }
  public MyFragmentPagerAdapter(FragmentManager fm, ArrayList<fragment> fragments) {
    super(fm);
    this.fragmentsList = fragments;
  }
  @Override
  public int getCount() {
    return fragmentsList.size();
  }
  @Override
  public Fragment getItem(int arg0) {
    return fragmentsList.get(arg0);
  }
  @Override
  public int getItemPosition(Object object) {
    return super.getItemPosition(object);
  }
}
</fragment></fragment>

3.MainActivity 要继承FragmentActivity

public class MainActivity extends FragmentActivity {
  private static final String TAG = "MainActivity";
  private ViewPager mPager;
  private ArrayList<fragment> fragmentsList;
  private ImageView ivBottomLine;
  private TextView tvTabActivity, tvTabGroups, tvTabFriends, tvTabChat;
  private int currIndex = 0;
  private int bottomLineWidth;
  private int offset = 0;
  private int position_one;
  private int position_two;
  private int position_three;
  private Resources resources;
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.main);
    resources = getResources();
    InitWidth();
    InitTextView();
    InitViewPager();
  }
  private void InitTextView() {
    tvTabActivity = (TextView) findViewById(R.id.tv_tab_activity);
    tvTabGroups = (TextView) findViewById(R.id.tv_tab_groups);
    tvTabFriends = (TextView) findViewById(R.id.tv_tab_friends);
    tvTabChat = (TextView) findViewById(R.id.tv_tab_chat);
    tvTabActivity.setOnClickListener(new MyOnClickListener(0));
    tvTabGroups.setOnClickListener(new MyOnClickListener(1));
    tvTabFriends.setOnClickListener(new MyOnClickListener(2));
    tvTabChat.setOnClickListener(new MyOnClickListener(3));
  }
  private void InitViewPager() {
    mPager = (ViewPager) findViewById(R.id.vPager);
    fragmentsList = new ArrayList<fragment>();
    Map<string, object=""> paramMap = new HashMap<string, object="">();
    paramMap.put("userid","小洪");
    paramMap.put("age",23);
    Map<string, object=""> paramMap2 = new HashMap<string, object="">();
    paramMap2.put("userid","vatty");
    paramMap2.put("age",24);
    Map<string, object=""> paramMap3 = new HashMap<string, object="">();
    paramMap3.put("userid","小明");
    paramMap3.put("age",25);
    Map<string, object=""> paramMap4 = new HashMap<string, object="">();
    paramMap4.put("userid","hongshengpeng.com");
    paramMap4.put("age",26);
    Fragment activityfragment = TestFragment.newInstance("Hello Activity.",paramMap);
    Fragment groupFragment = TestFragment.newInstance("Hello Group.",paramMap2);
    Fragment friendsFragment=TestFragment.newInstance("Hello Friends.",paramMap3);
    Fragment chatFragment=TestFragment.newInstance("Hello Chat.",paramMap4);
    fragmentsList.add(activityfragment);
    fragmentsList.add(groupFragment);
    fragmentsList.add(friendsFragment);
    fragmentsList.add(chatFragment);
    mPager.setAdapter(new MyFragmentPagerAdapter(getSupportFragmentManager(), fragmentsList));
    mPager.setCurrentItem(0);
    mPager.setOnPageChangeListener(new MyOnPageChangeListener());
  }
  private void InitWidth() {
    ivBottomLine = (ImageView) findViewById(R.id.iv_bottom_line);
    bottomLineWidth = ivBottomLine.getLayoutParams().width;
    Log.d(TAG, "cursor imageview width=" + bottomLineWidth);
    DisplayMetrics dm = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(dm);
    int screenW = dm.widthPixels;
    offset = (int) ((screenW / 4.0 - bottomLineWidth) / 2);
    Log.i("MainActivity", "offset=" + offset);
    position_one = (int) (screenW / 4.0);
    position_two = position_one * 2;
    position_three = position_one * 3;
  }
  public class MyOnClickListener implements View.OnClickListener {
    private int index = 0;
    public MyOnClickListener(int i) {
      index = i;
    }
    @Override
    public void onClick(View v) {
      mPager.setCurrentItem(index);
    }
  };
  public class MyOnPageChangeListener implements OnPageChangeListener {
    @Override
    public void onPageSelected(int arg0) {
      Animation animation = null;
      switch (arg0) {
      case 0:
        if (currIndex == 1) {
          animation = new TranslateAnimation(position_one, 0, 0, 0);
          tvTabGroups.setTextColor(resources.getColor(R.color.lightwhite));
        } else if (currIndex == 2) {
          animation = new TranslateAnimation(position_two, 0, 0, 0);
          tvTabFriends.setTextColor(resources.getColor(R.color.lightwhite));
        } else if (currIndex == 3) {
          animation = new TranslateAnimation(position_three, 0, 0, 0);
          tvTabChat.setTextColor(resources.getColor(R.color.lightwhite));
        }
        tvTabActivity.setTextColor(resources.getColor(R.color.white));
        break;
      case 1:
        if (currIndex == 0) {
          animation = new TranslateAnimation(0, position_one, 0, 0);
          tvTabActivity.setTextColor(resources.getColor(R.color.lightwhite));
        } else if (currIndex == 2) {
          animation = new TranslateAnimation(position_two, position_one, 0, 0);
          tvTabFriends.setTextColor(resources.getColor(R.color.lightwhite));
        } else if (currIndex == 3) {
          animation = new TranslateAnimation(position_three, position_one, 0, 0);
          tvTabChat.setTextColor(resources.getColor(R.color.lightwhite));
        }
        tvTabGroups.setTextColor(resources.getColor(R.color.white));
        break;
      case 2:
        if (currIndex == 0) {
          animation = new TranslateAnimation(0, position_two, 0, 0);
          tvTabActivity.setTextColor(resources.getColor(R.color.lightwhite));
        } else if (currIndex == 1) {
          animation = new TranslateAnimation(position_one, position_two, 0, 0);
          tvTabGroups.setTextColor(resources.getColor(R.color.lightwhite));
        } else if (currIndex == 3) {
          animation = new TranslateAnimation(position_three, position_two, 0, 0);
          tvTabChat.setTextColor(resources.getColor(R.color.lightwhite));
        }
        tvTabFriends.setTextColor(resources.getColor(R.color.white));
        break;
      case 3:
        if (currIndex == 0) {
          animation = new TranslateAnimation(0, position_three, 0, 0);
          tvTabActivity.setTextColor(resources.getColor(R.color.lightwhite));
        } else if (currIndex == 1) {
          animation = new TranslateAnimation(position_one, position_three, 0, 0);
          tvTabGroups.setTextColor(resources.getColor(R.color.lightwhite));
        } else if (currIndex == 2) {
          animation = new TranslateAnimation(position_two, position_three, 0, 0);
          tvTabFriends.setTextColor(resources.getColor(R.color.lightwhite));
        }
        tvTabChat.setTextColor(resources.getColor(R.color.white));
        break;
      }
      currIndex = arg0;
      animation.setFillAfter(true);
      animation.setDuration(300);
      ivBottomLine.startAnimation(animation);
    }
    @Override
    public void onPageScrolled(int arg0, float arg1, int arg2) {
    }
    @Override
    public void onPageScrollStateChanged(int arg0) {
    }
  }
}</string,></string,></string,></string,></string,></string,></string,></string,></fragment></fragment>

4.分别新建lay1.xml、 lay2.xml 、lay3.xml

lay1.xml

<!--?xml version="1.0" encoding="utf-8"?-->
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#fff" android:orientation="vertical">
  <textview android:id="@+id/tv_hello" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="TextView" android:visibility="gone">
   <listview android:id="@+id/listView3" android:layout_width="match_parent" android:layout_height="wrap_content" android:cachecolorhint="@android:color/transparent" android:divider="@drawable/reader_item_divider" android:listselector="@android:color/transparent">
        </listview>
</textview></linearlayout>

lay2.xml

<!--?xml version="1.0" encoding="utf-8"?-->
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:background="#FF8684">
</linearlayout>

lay3.xml与lay2.xml类型

<!--?xml version="1.0" encoding="utf-8"?-->
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:background="#1586FF">
</linearlayout>

main.xml

<!--?xml version="1.0" encoding="utf-8"?-->
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:umadsdk="http://schemas.android.com/apk/res/com.LoveBus" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical">
  <linearlayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical">
    <linearlayout android:layout_width="match_parent" android:layout_height="48dip" android:background="@drawable/android_title_bg">
      <imageview android:id="@+id/imageView1" android:layout_width="36dip" android:layout_height="36dip" android:layout_gravity="center_vertical" android:layout_marginleft="10dip" android:class="lazy" data-src="@drawable/more_game">
      <textview android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginleft="10dip" android:text="乐够GO" android:textappearance="?android:attr/textAppearanceLarge">
      <imageview android:id="@+id/imageView2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:paddingleft="10dip" android:class="lazy" data-src="@drawable/status_online" android:visibility="gone">
    </imageview></textview></imageview></linearlayout>
    <linearlayout android:id="@+id/linearLayout1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:paddingbottom="5dip" android:paddingtop="10dip" android:background="@color/coral">
      <textview android:id="@+id/tv_tab_activity" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1.0" android:gravity="center" android:text="@string/tab_1" android:textcolor="@color/white" android:textsize="18sp">
      <textview android:id="@+id/tv_tab_groups" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1.0" android:gravity="center" android:text="@string/tab_2" android:textcolor="@color/lightwhite" android:textsize="18sp">
      <textview android:id="@+id/tv_tab_friends" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1.0" android:gravity="center" android:text="@string/tab_3" android:textcolor="@color/lightwhite" android:textsize="18sp">
      <textview android:id="@+id/tv_tab_chat" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1.0" android:gravity="center" android:text="@string/tab_4" android:textcolor="@color/lightwhite" android:textsize="18sp">
    </textview></textview></textview></textview></linearlayout>
    <linearlayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="bottom" android:orientation="vertical" android:paddingbottom="3dip">
      <imageview android:id="@+id/iv_bottom_line" android:layout_width="40dip" android:layout_height="2dip" android:layout_marginleft="20dip" android:scaletype="matrix" android:class="lazy" data-src="#fff">
    </imageview></linearlayout>
  </linearlayout>
</android.support.v4.view.viewpager></linearlayout>

ps：ViewPager + Fragment实现滑动标签页

ViewPager 结合Fragment实现一个Activity里包含多个可滑动的标签页，每个标签页可以有独立的布局及响应。

activity_main.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
  xmlns:tools="http://schemas.android.com/tools" 
  android:layout_width="match_parent" 
  android:layout_height="match_parent" 
  android:orientation="vertical"> 
  <LinearLayout  
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:orientation="horizontal"> 
    <TextView  
      android:id="@+id/tv_guid1" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_weight="1.0" 
      android:gravity="center" 
      android:text="特性1" 
      android:textSize="18sp"/> 
    <TextView  
      android:id="@+id/tv_guid2"  
      android:layout_width="wrap_content"  
      android:layout_height="wrap_content"  
      android:layout_weight="1.0"  
      android:gravity="center"  
      android:text="特性2"   
      android:textSize="18sp"/>  
    <TextView  
      android:id="@+id/tv_guid3"  
      android:layout_width="wrap_content"  
      android:layout_height="wrap_content"  
      android:layout_weight="1.0"  
      android:gravity="center"  
      android:text="特性3 "   
      android:textSize="18sp"/>  
    <TextView  
      android:id="@+id/tv_guid4"  
      android:layout_width="wrap_content"  
      android:layout_height="wrap_content"  
      android:layout_weight="1.0"  
      android:gravity="center"  
      android:text="特性4"   
      android:textSize="18sp"/> 
  </LinearLayout> 
  <ImageView  
    android:id="@+id/cursor" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:scaleType="matrix" 
    android:class="lazy" data-src="@drawable/cursor"/> 
  <android.support.v4.view.ViewPager 
    android:id="@+id/viewpager" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:flipInterval="30" 
    android:persistentDrawingCache="animation"/> 
</LinearLayout> 

MainActivity.java

package com.example.viewpagernfragment; 
import java.util.ArrayList; 
import android.graphics.BitmapFactory; 
import android.graphics.Matrix; 
import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.support.v4.app.FragmentActivity; 
import android.support.v4.view.ViewPager; 
import android.support.v4.view.ViewPager.OnPageChangeListener; 
import android.util.DisplayMetrics; 
import android.view.Menu; 
import android.view.View; 
import android.view.animation.Animation; 
import android.view.animation.TranslateAnimation; 
import android.widget.ImageView; 
import android.widget.TextView; 
import android.widget.Toast; 
public class MainActivity extends FragmentActivity { 
  private ViewPager mPager; 
  private ArrayList<Fragment> fragmentList; 
  private ImageView image; 
  private TextView view1, view2, view3, view4; 
  private int currIndex;//当前页卡编号 
  private int bmpW;//横线图片宽度 
  private int offset;//图片移动的偏移量 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    InitTextView(); 
    InitImage(); 
    InitViewPager(); 
  } 
   
  public void InitTextView(){ 
    view1 = (TextView)findViewById(R.id.tv_guid1); 
    view2 = (TextView)findViewById(R.id.tv_guid2); 
    view3 = (TextView)findViewById(R.id.tv_guid3); 
    view4 = (TextView)findViewById(R.id.tv_guid4); 
    view1.setOnClickListener(new txListener(0)); 
    view2.setOnClickListener(new txListener(1)); 
    view3.setOnClickListener(new txListener(2)); 
    view4.setOnClickListener(new txListener(3)); 
  } 
  public class txListener implements View.OnClickListener{ 
    private int index=0; 
    public txListener(int i) { 
      index =i; 
    } 
    @Override 
    public void onClick(View v) { 
      // TODO Auto-generated method stub 
      mPager.setCurrentItem(index); 
    } 
  } 
   
  public void InitImage(){ 
    image = (ImageView)findViewById(R.id.cursor); 
    bmpW = BitmapFactory.decodeResource(getResources(), R.drawable.cursor).getWidth(); 
    DisplayMetrics dm = new DisplayMetrics(); 
    getWindowManager().getDefaultDisplay().getMetrics(dm); 
    int screenW = dm.widthPixels; 
    offset = (screenW/4 - bmpW)/2; 
    //imgageview设置平移，使下划线平移到初始位置（平移一个offset） 
    Matrix matrix = new Matrix(); 
    matrix.postTranslate(offset, 0); 
    image.setImageMatrix(matrix); 
  } 
   
  public void InitViewPager(){ 
    mPager = (ViewPager)findViewById(R.id.viewpager); 
    fragmentList = new ArrayList<Fragment>(); 
    Fragment btFragment= new ButtonFragment(); 
    Fragment secondFragment = TestFragment.newInstance("this is second fragment"); 
    Fragment thirdFragment = TestFragment.newInstance("this is third fragment"); 
    Fragment fourthFragment = TestFragment.newInstance("this is fourth fragment"); 
    fragmentList.add(btFragment); 
    fragmentList.add(secondFragment); 
    fragmentList.add(thirdFragment); 
    fragmentList.add(fourthFragment); 
    //给ViewPager设置适配器 
    mPager.setAdapter(new MyFragmentPagerAdapter(getSupportFragmentManager(), fragmentList)); 
    mPager.setCurrentItem(0);//设置当前显示标签页为第一页 
    mPager.setOnPageChangeListener(new MyOnPageChangeListener());//页面变化时的监听器 
  } 
  public class MyOnPageChangeListener implements OnPageChangeListener{ 
    private int one = offset *2 +bmpW;//两个相邻页面的偏移量 
    @Override 
    public void onPageScrolled(int arg0, float arg1, int arg2) { 
      // TODO Auto-generated method stub 
    } 
    @Override 
    public void onPageScrollStateChanged(int arg0) { 
      // TODO Auto-generated method stub 
    } 
    @Override 
    public void onPageSelected(int arg0) { 
      // TODO Auto-generated method stub 
      Animation animation = new TranslateAnimation(currIndex*one,arg0*one,0,0);//平移动画 
      currIndex = arg0; 
      animation.setFillAfter(true);//动画终止时停留在最后一帧，不然会回到没有执行前的状态 
      animation.setDuration(200);//动画持续时间0.2秒 
      image.startAnimation(animation);//是用ImageView来显示动画的 
      int i = currIndex + 1; 
      Toast.makeText(MainActivity.this, "您选择了第"+i+"个页卡", Toast.LENGTH_SHORT).show(); 
    } 
  } 
  @Override 
  public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.main, menu); 
    return true; 
  } 
} 

谷歌官方认为，ViewPager应该和Fragment一起使用时，此时ViewPager的适配器是FragmentPagerAdapter，当你实现一个FragmentPagerAdapter,你必须至少覆盖以下方法:

getCount()

getItem()

如果ViewPager没有和Fragment一起，ViewPager的适配器是PagerAdapter，它是基类提供适配器来填充页面ViewPager内部，当你实现一个PagerAdapter,你必须至少覆盖以下方法:

instantiateItem(ViewGroup, int)
destroyItem(ViewGroup, int, Object)
getCount()
isViewFromObject(View, Object)
[java] view plaincopy
package com.example.viewpagernfragment; 
import java.util.ArrayList; 
import android.support.v4.app.Fragment; 
import android.support.v4.app.FragmentManager; 
import android.support.v4.app.FragmentPagerAdapter; 
public class MyFragmentPagerAdapter extends FragmentPagerAdapter{ 
  ArrayList<Fragment> list; 
  public MyFragmentPagerAdapter(FragmentManager fm,ArrayList<Fragment> list) { 
    super(fm); 
    this.list = list; 
  } 
  @Override 
  public int getCount() { 
    return list.size(); 
  } 
  @Override 
  public Fragment getItem(int arg0) { 
    return list.get(arg0); 
  } 
} 
[java] view plaincopy
package com.example.viewpagernfragment; 
import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.Button; 
import android.widget.Toast; 
public class ButtonFragment extends Fragment{ 
  Button myButton; 
  @Override 
  public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) { 
    View rootView = inflater.inflate(R.layout.guide_1, container, false);//关联布局文件 
    myButton = (Button)rootView.findViewById(R.id.mybutton);//根据rootView找到button 
    //设置按键监听事件 
    myButton.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
        // TODO Auto-generated method stub 
        Toast.makeText(ButtonFragment.this.getActivity(), "button is click!", Toast.LENGTH_SHORT).show(); 
      } 
    }); 
    return rootView; 
  } 
} 
[java] view plaincopy
package com.example.viewpagernfragment; 
import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.TextView; 
public class TestFragment extends Fragment { 
  private static final String TAG = "TestFragment"; 
  private String hello;// = "hello android"; 
  private String defaultHello = "default value"; 
  static TestFragment newInstance(String s) { 
    TestFragment newFragment = new TestFragment(); 
    Bundle bundle = new Bundle(); 
    bundle.putString("hello", s); 
    newFragment.setArguments(bundle); 
    //bundle还可以在每个标签里传送数据 
    return newFragment; 
  } 
  @Override 
  public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) { 
    Log.d(TAG, "TestFragment-----onCreateView"); 
    Bundle args = getArguments(); 
    hello = args != null ? args.getString("hello") : defaultHello; 
    View view = inflater.inflate(R.layout.guide_2, container, false); 
    TextView viewhello = (TextView) view.findViewById(R.id.tv); 
    viewhello.setText(hello); 
    return view; 
  } 
} 
<?xml version="1.0" encoding="UTF-8"?>  
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  
  android:layout_width="fill_parent"  
  android:layout_height="fill_parent"  
  android:background="#ff0000ff" >  
  <Button  
    android:id="@+id/mybutton" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="hit me" 
    android:gravity="center"/> 
</RelativeLayout>  
[html] view plaincopy
<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
  android:layout_width="fill_parent" 
  android:layout_height="fill_parent" 
  android:orientation="vertical" 
  android:background="#158684" > 
  <TextView 
    android:id="@+id/tv" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="TextView" /> 
</RelativeLayout> 

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