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"?>
<selector
xmlns: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() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
// TODO Auto-generated method stub
switch(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
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