您好,登錄后才能下訂單哦!
今天寫了個示例代碼,就是使用Actionbar類實現頂部標簽切換功能。如果所示。
使用最新的adt工具,創建項目的時候都會帶一個android-support-v7-appcompat的類庫項目,
這個libproject中有我們要用的ActionBar,可以適配2.1的Android系統。
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="這個是應用界面" android:textAppearance="?android:attr/textAppearanceLarge" /> </RelativeLayout>
6、創建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,并處理點擊滑動事件。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); //實例化pageradapter mTabsPagerAdapter = new TabsPagerAdapter(getSupportFragmentManager()); viewPager.setAdapter(mTabsPagerAdapter); //獲取適配的actionbar actionBar = getSupportActionBar(); //設置home按鈕不可點擊 actionBar.setHomeButtonEnabled(false); //設置頂部導航的模式 -tabs actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); //添加標簽 for(String tab:tabs) { actionBar.addTab(actionBar.newTab().setText(tab).setTabListener(this)); } //設置ViewPager切換時候的監聽事件 viewPager.setOnPageChangeListener(new OnPageChangeListener() { @Override public void onPageSelected(int position) { //頁面滑動,頂部標簽跟著改變 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
免責聲明:本站發布的內容(圖片、視頻和文字)以原創、轉載和分享為主,文章觀點不代表本網站立場,如果涉及侵權請聯系站長郵箱:is@yisu.com進行舉報,并提供相關證據,一經查實,將立刻刪除涉嫌侵權內容。