今天寫了個(gè)示例代碼,就是使用Actionbar類實(shí)現(xiàn)頂部標(biāo)簽切換功能。如果所示。


使用最新的adt工具,創(chuàng)建項(xiàng)目的時(shí)候都會(huì)帶一個(gè)android-support-v7-appcompat的類庫(kù)項(xiàng)目,
這個(gè)libproject中有我們要用的ActionBar,可以適配2.1的Android系統(tǒng)。
廢話不多說,直接上代碼。
1、修改activity_main.xml,增加ViewPager。
<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/pager" android:layout_width="match_parent" android:layout_height="match_parent"/>
2、修改MainActivity中的代碼,讓其繼承ActionBarActivity
public class MainActivity extends ActionBarActivity implements TabListener {3、創(chuàng)建TabsPagerAdapter繼承FragmentPagerAdapter
package com.example.tabswithswie.adatper;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import com.example.tabswithswie.fragments.AppFragment;
import com.example.tabswithswie.fragments.GamesFragment;
import com.example.tabswithswie.fragments.MoviesFragment;
public class TabsPagerAdapter extends FragmentPagerAdapter {
public TabsPagerAdapter(FragmentManager fm) {
super(fm);
// TODO Auto-generated constructor stub
}
@Override
public Fragment getItem(int index) {
switch (index) {
case 0:
return new AppFragment();
case 1:
return new GamesFragment();
case 2:
return new MoviesFragment();
}
return null;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return 3;
}
}4、創(chuàng)建AppFragment繼承android.support.v4.app.Fragment
package com.example.tabswithswie.fragments;
import com.example.tabswithswie.R;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class AppFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
return inflater.inflate(R.layout.fragment_app, container, false);
}
}5、創(chuàng)建布局文件fragment_app.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#43ff00ff" > <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:text="這個(gè)是應(yīng)用界面" android:textAppearance="?android:attr/textAppearanceLarge" /> </RelativeLayout>
6、創(chuàng)建GamesFragment繼承android.support.v4.app.Fragment
package com.example.tabswithswie.fragments;
import com.example.tabswithswie.R;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class GamesFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
return inflater.inflate(R.layout.fragment_game, container, false);
}
}7、創(chuàng)建布局文件fragment_game.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#9445f353"> <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:text="游戲" android:textAppearance="?android:attr/textAppearanceLarge" /> </RelativeLayout>
8、創(chuàng)建MoviesFragment繼承android.support.v4.app.Fragment
package com.example.tabswithswie.fragments;
import com.example.tabswithswie.R;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class MoviesFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
return inflater.inflate(R.layout.fragment_movie, container, false);
}
}9、創(chuàng)建布局文件fragment_movie.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#34fef443" > <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:text="視頻" android:textAppearance="?android:attr/textAppearanceLarge" /> </RelativeLayout>
10、回到 MainActivity類,添加Tabs到ActionBar中,并處理點(diǎn)擊滑動(dòng)事件。完整代碼
package com.example.tabswithswie;
import android.os.Bundle;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBar.Tab;
import android.support.v7.app.ActionBar.TabListener;
import android.support.v7.app.ActionBarActivity;
import com.example.tabswithswie.adatper.TabsPagerAdapter;
public class MainActivity extends ActionBarActivity implements TabListener {
private ViewPager viewPager;
private ActionBar actionBar;
private TabsPagerAdapter mTabsPagerAdapter;
private String[] tabs ={"應(yīng)用","游戲","視頻"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//獲取viewpager
viewPager = (ViewPager) findViewById(R.id.pager);
//實(shí)例化pageradapter
mTabsPagerAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mTabsPagerAdapter);
//獲取適配的actionbar
actionBar = getSupportActionBar();
//設(shè)置home按鈕不可點(diǎn)擊
actionBar.setHomeButtonEnabled(false);
//設(shè)置頂部導(dǎo)航的模式 -tabs
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
//添加標(biāo)簽
for(String tab:tabs)
{
actionBar.addTab(actionBar.newTab().setText(tab).setTabListener(this));
}
//設(shè)置ViewPager切換時(shí)候的監(jiān)聽事件
viewPager.setOnPageChangeListener(new OnPageChangeListener() {
@Override
public void onPageSelected(int position) {
//頁(yè)面滑動(dòng),頂部標(biāo)簽跟著改變
actionBar.setSelectedNavigationItem(position);
}
@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 onTabReselected(Tab arg0, FragmentTransaction arg1) {
// TODO Auto-generated method stub
}
@Override
public void onTabSelected(Tab tab, FragmentTransaction fragmentTransaction) {
//tab選中,切換viewpager
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(Tab arg0, FragmentTransaction arg1) {
// TODO Auto-generated method stub
}
}代碼就是這樣的,搞定收工了。示例代碼下載
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當(dāng)前標(biāo)題:Android之Actionbar頂部標(biāo)簽的使用-創(chuàng)新互聯(lián)
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