html5 国内网站建设/网站加速

UI系列教程第四课：微信TAB界面的实现

今天蓝老师给童鞋们带来的是微信TAB界面的实现

如效果图所示，这种TAB页面的效果是大多数应用都会涉及到的

思路一般就两种activitygrounp+radionbutton或tabwidget+radionbutton

Radionbutton定制性较强，所以推荐使用它们

而对于tab项效果其实就是top图selector+background图selector+文字selector

这样效果基本就全了，废话不多说，直接上xml布局

<?xml version="1.0" encoding="utf-8"?>
<TabHost android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent"xmlns:android="http://schemas.android.com/apk/res/android"><LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"><FrameLayout android:id="@android:id/tabcontent" android:layout_width="fill_parent" android:layout_height="0.0dip" android:layout_weight="1.0" /><TabWidget android:id="@android:id/tabs" android:visibility="gone" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="0.0" /><RadioGroup android:id="@+id/main_radiogroup"android:gravity="center_vertical"android:layout_gravity="bottom" android:orientation="horizontal"android:paddingBottom="2dip"android:paddingTop="8dp"android:background="@drawable/mmfooter_bg"android:layout_width="fill_parent" android:layout_height="wrap_content"><RadioButton android:id="@+id/main_tab_weixin" android:checked="true" android:text="@string/main_title" android:drawableTop="@drawable/tab_weixin"android:textColor="@color/tab_text"style="@style/MMTabButton" />	<RadioButton android:id="@+id/main_tab_address" android:text="@string/main_contact" android:drawableTop="@drawable/tab_address" android:textColor="@color/tab_text"style="@style/MMTabButton" /><RadioButton android:id="@+id/main_tab_find_friend" android:text="@string/main_addcontact" android:drawableTop="@drawable/tab_find_frd"android:textColor="@color/tab_text" style="@style/MMTabButton" /><RadioButton android:id="@+id/main_tab_settings" android:text="@string/main_setting" android:drawableTop="@drawable/tab_settings" android:textColor="@color/tab_text"style="@style/MMTabButton" /></RadioGroup></LinearLayout></TabHost>

本例采用tabwidget+radionbutton方式，布局里将TabWidget隐藏，用radiongrounp取而代之

看radionbutton的配置

<RadioButton android:id="@+id/main_tab_weixin" android:checked="true" android:text="@string/main_title" android:drawableTop="@drawable/tab_weixin"android:textColor="@color/tab_text"style="@style/MMTabButton" />	

android:drawableTop="@drawable/tab_weixin"

Top图selector

<?xml version="1.0" encoding="utf-8"?>
<selectorxmlns:android="http://schemas.android.com/apk/res/android"><item android:state_enabled="true" android:state_checked="true" android:drawable="@drawable/tab_weixin_pressed" /><item android:drawable="@drawable/tab_weixin_normal" />
</selector>

android:textColor="@color/tab_text"

文字selector

<?xml version="1.0" encoding="utf-8" ?> 
<selector xmlns:android="http://schemas.android.com/apk/res/android"><item android:state_checked="true" android:color="@color/white"/><item android:color="#ff666666"/>   
</selector>

style="@style/MMTabButton"

Radionbutton风格，整体风格定制

    <style name="tab_item_text_style"><item name="android:textSize">12.0dip</item><item name="android:textColor">@color/tab_text</item><item name="android:ellipsize">marquee</item>       <item name="android:singleLine">true</item></style><style name="MMTabButton"><item name="android:textAppearance">@style/tab_item_text_style</item> <item name="android:gravity">center_horizontal</item><item name="android:background">@drawable/tab_bg</item><item name="android:layout_width">0.0dip</item><item name="android:layout_height">wrap_content</item><item name="android:button">@null</item><item name="android:layout_weight">1.0</item></style>

至此，效果全部实现...

再看activity的实现：

public class WeiXinTabActivity extends TabActivity {/** Called when the activity is first created. */private TabHost		m_tabHost;		private RadioGroup  m_radioGroup;public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main_tab);init();}private void init(){m_tabHost = getTabHost();int count = Constant.mTabClassArray.length;		for(int i = 0; i < count; i++){	TabSpec tabSpec = m_tabHost.newTabSpec(Constant.mTextviewArray[i]).setIndicator(Constant.mTextviewArray[i]).setContent(getTabItemIntent(i));m_tabHost.addTab(tabSpec);}m_radioGroup = (RadioGroup) findViewById(R.id.main_radiogroup);m_radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(RadioGroup group, int checkedId) {// TODO Auto-generated method stubswitch(checkedId){case R.id.main_tab_weixin:m_tabHost.setCurrentTabByTag(Constant.mTextviewArray[0]);break;case R.id.main_tab_address:m_tabHost.setCurrentTabByTag(Constant.mTextviewArray[1]);break;case R.id.main_tab_find_friend:m_tabHost.setCurrentTabByTag(Constant.mTextviewArray[2]);break;case R.id.main_tab_settings:m_tabHost.setCurrentTabByTag(Constant.mTextviewArray[3]);break;}}});((RadioButton) m_radioGroup.getChildAt(0)).toggle();}private Intent getTabItemIntent(int index){Intent intent = new Intent(this, Constant.mTabClassArray[index]);return intent;}

public class Constant {public static String mTextviewArray[] = {"微信", "通讯录", "朋友", "设置"};public static Class mTabClassArray[]= {Activity1.class,Activity2.class,Activity3.class,Activity4.class};
}

这样就将tabwidget和radionbutton无缝链接起来了，一目了然有木有~

附上链接工程：

http://download.csdn.net/detail/geniuseoe2012/4516524

欲知更多Android-UI技巧，请关注窝的下一堂课,更多精彩尽在http://blog.csdn.net/geniuseoe2012