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本文實例講述了Android編程之ActionBar Tabs用法。分享給大家供大家參考,具體如下:
這里主要實現(xiàn)用Tab切換不同的Fragment,點(diǎn)擊View顯示or隱藏ActionBar,把ActionBar 設(shè)為透明,使界面更加友好,詳細(xì)代碼見資源里的ActionBarTabs。
ActionBar Tab主要用于Fragment之間的切換,其必須要設(shè)置ActionBar.TabListener,詳細(xì)代碼如下
ActionBarActivity.Java:
import android.app.ActionBar; import android.app.Activity; import android.app.FragmentTransaction; import android.app.ActionBar.Tab; import android.os.Bundle; import android.os.CountDownTimer; import android.view.MotionEvent; import android.view.Window; public class ActionBarActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //使ActionBar變得透明 requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY); setContentView(R.layout.main); final ActionBar actionBar = getActionBar(); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); // remove the activity title to make space for tabs actionBar.setDisplayShowTitleEnabled(false); AFragment aFragment = new AFragment(); actionBar.addTab(actionBar.newTab().setText("Tab-A") .setTabListener(new ListenerA(aFragment))); BFragment bFragment = new BFragment(); actionBar.addTab(actionBar.newTab().setText("Tab-B") .setTabListener(new ListenerB(bFragment))); } //點(diǎn)擊顯示or隱藏ActionBar public boolean onTouchEvent(MotionEvent event){ ActionBar bar = getActionBar(); switch(event.getAction()){ case MotionEvent.ACTION_UP: if(bar.isShowing()) bar.hide(); else bar.show(); break; default: break; } return true; } private class ListenerA implements ActionBar.TabListener { private AFragment mFragment; // Called to create an instance of the listener when adding a new tab public ListenerA(AFragment fragment) { mFragment = fragment; } public void onTabSelected(Tab tab, FragmentTransaction ft) { ft.add(R.id.fragment, mFragment, null); } public void onTabUnselected(Tab tab, FragmentTransaction ft) { ft.remove(mFragment); } public void onTabReselected(Tab tab, FragmentTransaction ft) { // do nothing } } } private class ListenerB implements ActionBar.TabListener { private BFragment mFragment; // Called to create an instance of the listener when adding a new tab public ListenerB(BFragment fragment) { mFragment = fragment; } public void onTabSelected(Tab tab, FragmentTransaction ft) { ft.add(R.id.fragment, mFragment, null); } public void onTabUnselected(Tab tab, FragmentTransaction ft) { ft.remove(mFragment); } public void onTabReselected(Tab tab, FragmentTransaction ft) { // do nothing } } } }
其中涉及到兩個Fragment,在前面Fragment的筆記中講過,這里就不再贅述。類AFragment實現(xiàn)如下,BFragment實現(xiàn)與這類似:
public class AFragment extends Fragment { public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.alayout, container, false); } }
更多關(guān)于Android相關(guān)內(nèi)容感興趣的讀者可查看本站專題:《Android開發(fā)入門與進(jìn)階教程》、《Android調(diào)試技巧與常見問題解決方法匯總》、《Android基本組件用法總結(jié)》、《Android視圖View技巧總結(jié)》、《Android布局layout技巧總結(jié)》及《Android控件用法總結(jié)》
希望本文所述對大家Android程序設(shè)計有所幫助。
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