青海医院网站建设公司,网站篡改搜索引擎js,郑州企业网站优化,商城网站都有哪 些功能查了好多资料#xff0c;发现还是不全#xff0c;干脆自己整理吧#xff0c;至少保证在我的做法正确的#xff0c;以免误导读者#xff0c;也是给自己做个记录吧#xff01; 首先先看一个小例子#xff0c;接着讲授理原 TabTest.java view plaincopy to clipboardpr…查了好多资料发现还是不全干脆自己整理吧至少保证在我的做法正确的以免误导读者也是给自己做个记录吧 首先先看一个小例子接着讲授理原 TabTest.java view plaincopy to clipboardprint? package org.hualang.tab; import android.app.Activity; import android.app.TabActivity; import android.graphics.Color; import android.os.Bundle; import android.widget.TabHost; import android.widget.Toast; import android.widget.TabHost.OnTabChangeListener; public class TabTest extends TabActivity { /** Called when the activity is first created. */ TabHost tabhost; Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //获得TabHost对象 tabhost getTabHost(); //为TabHost添加签标 //新建一个newTabSpec(newTabSpec) //设置其签标和标图setIndicator //设置容内setContent tabhost.addTab(tabhost.newTabSpec(tab1) .setIndicator(TAB 1,getResources().getDrawable(R.drawable.img1)) .setContent(R.id.text1)); tabhost.addTab(tabhost.newTabSpec(tab2) .setIndicator(TAB 2,getResources().getDrawable(R.drawable.img2)) .setContent(R.id.text2)); tabhost.addTab(tabhost.newTabSpec(tab3) .setIndicator(TAB 3,getResources().getDrawable(R.drawable.img3)) .setContent(R.id.text3)); //设置TabHost的背景颜色 //tabhost.setBackgroundColor(Color.argb(150,22,70,150)); //设置TabHost的背景图片资源 tabhost.setBackgroundResource(R.drawable.bg0); //设置前当示显哪个签标 tabhost.setCurrentTab(0); //签标换切事件处理setOnTabChangedListener tabhost.setOnTabChangedListener(new OnTabChangeListener() { public void onTabChanged(String tabId) { Toast toastToast.makeText(getApplicationContext(), 现在是tabId签标, Toast.LENGTH_SHORT); toast.show(); } }); } } main.xml ?xml version1.0 encodingutf-8? TabHost xmlns:androidhttp://schemas.android.com/apk/res/android android:idandroid:id/tabhost android:layout_widthfill_parent android:layout_heightfill_parent LinearLayout android:orientationvertical android:layout_widthfill_parent android:layout_heightfill_parent TabWidget android:idandroid:id/tabs android:layout_widthfill_parent android:layout_heightwrap_content / FrameLayout android:idandroid:id/tabcontent android:layout_widthfill_parent android:layout_heightfill_parent TextView android:idid/text1 android:layout_widthfill_parent android:layout_heightfill_parent android:text选项卡1 / TextView android:idid/text2 android:layout_widthfill_parent android:layout_heightfill_parent android:text选项卡2 / TextView android:idid/text3 android:layout_widthfill_parent android:layout_heightfill_parent android:text选项卡3 / /FrameLayout /LinearLayout /TabHost Android TabWidget的实现可以分为二种一种是应用准标TabActivity实现另外一种可以自定义方法实现种这方法实现起来对相较比复杂但对于要实现较比多元化的view是很好的这里我们简略看下源码 一、通用做法 继承TabActivity实现自己的TabActivity [java] view plaincopy import android.app.Activity; import android.app.TabActivity; import android.content.Intent; import android.os.Bundle; import android.widget.TabHost; import android.widget.TabHost.OnTabChangeListener; public class TabWidgetDemo2 extends TabActivity implements OnTabChangeListener { private TabHost mTabHost; Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.tabwidgetdemo2); mTabHost getTabHost(); mTabHost.setOnTabChangedListener(this); setupTab1(); setupTab2(); mTabHost.setCurrentTab(1); } private void setupTab2() { // TODO Auto-generated method stub Intent intent new Intent(); intent.setAction(Intent.ACTION_MAIN); intent.setClass(this, TabWidget2.class); mTabHost.addTab(mTabHost.newTabSpec(TabWidget2) .setIndicator(TabWidget2,getResources().getDrawable(R.drawable.icon)) .setContent(intent)); } private void setupTab1() { // TODO Auto-generated method stub Intent intent new Intent(); intent.setAction(Intent.ACTION_MAIN); intent.setClass(this, TabWidget1.class); mTabHost.addTab(mTabHost.newTabSpec(TabWidget1) .setIndicator(TabWidget1,getResources().getDrawable(R.drawable.icon)) .setContent(intent)); } public void onTabChanged(String tabId) { // TODO Auto-generated method stub Activity activity getLocalActivityManager().getActivity(tabId); if (activity ! null) { activity.onWindowFocusChanged(true); } } } 二个tab对应的Activity先看TabWidget1这个类在第二种实现中还会用到因此我们可以看到对Action的判断。 [java] view plaincopy import android.app.Activity; import android.content.Intent; import android.os.Bundle; import com.android.exampledemo.R; import com.android.exampledemo.util.DemoUtils; public class TabWidget1 extends Activity { Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); Intent intent this.getIntent(); if (intent.getAction().equals(Intent.ACTION_MAIN)){ setContentView(R.layout.tabwidgetdemo2_1); } else { setContentView(R.layout.tabwidget_1); DemoUtils.updateButtonBar((Activity)this,R.id.contactstab); } } } 再看一下TabWidget2这个Activity我们在第二种实现方法中也会用到。 [java] view plaincopy import com.android.exampledemo.R; import com.android.exampledemo.util.DemoUtils; import android.app.Activity; import android.content.Intent; import android.os.Bundle; public class TabWidget2 extends Activity { Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); Intent intent this.getIntent(); if (intent.getAction().equals(Intent.ACTION_MAIN)){ setContentView(R.layout.tabwidgetdemo2_1); } else { setContentView(R.layout.tabwidget_2); DemoUtils.updateButtonBar((Activity)this,R.id.groupstab); } } } 最后就是各个Activity对应的layout 1.tabwidgetdemo2.xml [xhtml] view plaincopy ?xml version1.0 encodingutf-8? TabHost xmlns:androidhttp://schemas.android.com/apk/res/android android:idandroid:id/tabhost android:layout_widthfill_parent android:layout_heightfill_parent LinearLayout android:orientationvertical android:layout_widthfill_parent android:layout_heightfill_parent TabWidget android:idandroid:id/tabs android:layout_widthfill_parent android:layout_height68dip android:paddingLeft1dip android:paddingRight1dip android:paddingTop4dip / FrameLayout android:idandroid:id/tabcontent android:layout_widthfill_parent android:layout_height0dip android:layout_weight1 / /LinearLayout /TabHost 2.二个sub tab对应的layout [xhtml] view plaincopy Layout1 ?xml version1.0 encodingutf-8? LinearLayout xmlns:androidhttp://schemas.android.com/apk/res/android android:layout_widthfill_parent android:layout_heightfill_parent android:background#FFF TextView android:idid/textview android:layout_widthwrap_content android:layout_heightwrap_content android:textTab Widget first /TextView /LinearLayout Layout2 ?xml version1.0 encodingutf-8? LinearLayout xmlns:androidhttp://schemas.android.com/apk/res/android android:layout_widthfill_parent android:layout_heightfill_parent android:background#FFF TextView android:idid/textview android:layout_widthwrap_content android:layout_heightwrap_content android:textTab Widget second /TextView /LinearLayout 方法2 先创立一个Activity TabWidgetDemo [c-sharp] view plaincopy 1.TabWidgetDemo.java import com.android.exampledemo.R; import com.android.exampledemo.util.DemoUtils; import android.app.Activity; import android.content.Context; import android.content.SharedPreferences; import android.os.Bundle; //not use tabhost to organized public class TabWidgetDemo extends Activity { Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); //int activeTab DemoUtils.getIntPref(this, activetab, R.id.artisttab); SharedPreferences prefs getSharedPreferences(getPackageName(), Context.MODE_PRIVATE); int activeTab prefs.getInt(activetab, R.id.contactstab); if (activeTab ! R.id.contactstab activeTab ! R.id.groupstab) { activeTab R.id.contactstab; } DemoUtils.activateTab(this, activeTab); } } 2.DemoUtils import android.app.Activity; import android.content.Intent; import android.net.Uri; import android.view.View; import android.widget.TabWidget; import com.android.exampledemo.R; public class DemoUtils { static int sActiveTabIndex -1; public static void activateTab(Activity a,int active_id){ Intent intent new Intent(Intent.ACTION_PICK); switch (active_id) { case R.id.contactstab: intent.setDataAndType(Uri.EMPTY, vnd.android.cursor.dir/tb_contacts); break; case R.id.groupstab: intent.setDataAndType(Uri.EMPTY, vnd.android.cursor.dir/tb_groups); break; default: return; } intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); a.startActivity(intent); a.finish(); a.overridePendingTransition(0,0); } public static void updateButtonBar(Activity a, int highlight) { final TabWidget ll (TabWidget) a.findViewById(R.id.buttonbar); for (int i ll.getChildCount() - 1; i 0; i--) { View v ll.getChildAt(i); boolean isActive (v.getId() highlight); if (isActive) { ll.setCurrentTab(i); sActiveTabIndex i; } v.setTag(i); v.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { int id v.getId(); if (id ll.getChildAt(sActiveTabIndex).getId()) { return; } activateTab((Activity)ll.getContext(),id ); ll.setCurrentTab((Integer) v.getTag()); }}); } } } 二个Tab sub activity前一方法中经已给出这里我们只需要看一下layout的实现就能够了 1buttonbar.xml [xhtml] view plaincopy ?xml version1.0 encodingutf-8? TabWidget xmlns:androidhttp://schemas.android.com/apk/res/android android:idid/buttonbar android:layout_widthmatch_parent android:layout_heightwrap_content TextView android:idid/contactstab android:focusabletrue android:drawableTopdrawable/icon android:backgrounddrawable/buttonbarbackground android:textContacts android:textColorcolor/tab_indicator_text android:textAppearance?android:attr/textAppearanceSmall android:paddingTop7dip android:paddingBottom2dip android:gravitycenter android:layout_weight1 android:layout_marginLeft-3dip android:layout_marginRight-3dip android:layout_widthmatch_parent android:layout_height84dip android:singleLinetrue android:ellipsizemarquee / TextView android:idid/groupstab android:focusabletrue android:drawableTopdrawable/icon android:backgrounddrawable/buttonbarbackground android:textGroup android:textColorcolor/tab_indicator_text android:textAppearance?android:attr/textAppearanceSmall android:paddingTop7dip android:paddingBottom2dip android:gravitycenter android:layout_weight1 android:layout_marginLeft-3dip android:layout_marginRight-3dip android:layout_widthmatch_parent android:layout_height84dip android:singleLinetrue android:ellipsizemarquee / /TabWidget 2tabwidget_1.xml [xhtml] view plaincopy ?xml version1.0 encodingutf-8? LinearLayout xmlns:androidhttp://schemas.android.com/apk/res/android android:layout_widthfill_parent android:layout_heightfill_parent include layoutlayout/battonbar / ExpandableListView android:idid/android:list android:layout_widthfill_parent android:layout_heightwrap_content android:footerDividersEnabledtrue android:fadeScrollbarstrue android:drawSelectorOnToptrue /ExpandableListView /LinearLayout 3 tabwidget_2.xml [xhtml] view plaincopy ?xml version1.0 encodingutf-8? LinearLayout xmlns:androidhttp://schemas.android.com/apk/res/android android:layout_widthfill_parent android:layout_heightfill_parent include layoutlayout/battonbar / /LinearLayout 文章结束给大家分享下程序员的一些笑话语录 真正的程序员喜欢兼卖爆米花他们利用CPU散发出的热量做爆米花可以根据米花爆裂的速度听出正在运行什么程序。 转载于:https://www.cnblogs.com/jiangu66/archive/2013/04/14/3020375.html
