布局学习——妙用TabHost

<TabHostandroid:id="@android:id/tabhost"android:layout_width="fill_parent"android:layout_height="fill_parent"

xmlns:android="http://schemas.android.com/apk/res/android">

<LinearLayoutandroid:orientation="vertical"android:layout_width="fill_parent"android:layout_height="fill_parent">

<FrameLayoutandroid:id="@android:id/tabcontent"android:layout_width="fill_parent"android:layout_height="0.0dip"android:layout_weight="1.0"/>

<TabWidgetandroid:id="@android:id/tabs"android:visibility="gone"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_weight="0.0"/>

<RadioGroupandroid:gravity="center_vertical"android:layout_gravity="bottom"android:orientation="horizontal"android:id="@id/main_radio"android:background="@drawable/maintab_toolbar_bg"android:layout_width="fill_parent"android:layout_height="wrap_content">

<RadioButtonandroid:text="@string/main_home"android:checked="true"android:id="@+id/radio_button0"android:layout_marginTop="2.0dip"android:drawableTop="@drawable/icon_1_n"style="@style/main_tab_bottom"/>

<RadioButtonandroid:id="@+id/radio_button1"android:layout_marginTop="2.0dip"android:text="@string/main_news"android:drawableTop="@drawable/icon_2_n"style="@style/main_tab_bottom"/>

<RadioButtonandroid:id="@+id/radio_button2"android:layout_marginTop="2.0dip"android:text="@string/main_my_info"android:drawableTop="@drawable/icon_3_n"style="@style/main_tab_bottom"/>

<RadioButtonandroid:id="@+id/radio_button3"android:layout_marginTop="2.0dip"android:text="@string/menu_search"android:drawableTop="@drawable/icon_4_n"style="@style/main_tab_bottom"/>

<RadioButtonandroid:id="@+id/radio_button4"android:layout_marginTop="2.0dip"android:text="@string/more"android:drawableTop="@drawable/icon_5_n"style="@style/main_tab_bottom"/>

</RadioGroup>

</LinearLayout>

<itemname="android:textSize">@dimen/bottom_tab_font_size</item>

<itemname="android:textColor">#ffffffff</item>

<itemname="android:ellipsize">marquee</item>

<itemname="android:gravity">center_horizontal</item>

<itemname="android:background">@drawable/home_btn_bg</item>

<itemname="android:paddingTop">@dimen/bottom_tab_padding_up</item>

<itemname="android:layout_width">fill_parent</item>

<itemname="android:layout_height">wrap_content</item>

<itemname="android:button">@null</item>

<itemname="android:singleLine">true</item>

<itemname="android:drawablePadding">@dimen/bottom_tab_padding_drawable</item>

<itemname="android:layout_weight">1.0</item>

xmlns:android="http://schemas.android.com/apk/res/android">

<itemandroid:state_focused="true"android:state_enabled="true"android:state_pressed="false"android:drawable="@drawable/home_btn_bg_s"/>

<itemandroid:state_enabled="true"android:state_pressed="true"android:drawable="@drawable/home_btn_bg_s"/>

<itemandroid:state_enabled="true"android:state_checked="true"android:drawable="@drawable/home_btn_bg_d"/>

<itemandroid:drawable="@drawable/transparent"/>

OnCheckedChangeListener{

privateTabHostmHost;

privateIntentmMBlogIntent;

privateIntentmMoreIntent;

privateIntentmInfoIntent;

privateIntentmSearchIntent;

privateIntentmUserInfoIntent;

@Override

protectedvoidonCreate(BundlesavedInstanceState){

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);

setContentView(R.layout.maintabs);

//~~~~~~~~~~~~初始化

this.mMBlogIntent=newIntent(this,HomeListActivity.class);

this.mSearchIntent=newIntent(this,SearchSquareActivity.class);

this.mInfoIntent=newIntent(this,MessageGroup.class);

this.mUserInfoIntent=newIntent(this,MyInfoActivity.class);

this.mMoreIntent=newIntent(this,MoreItemsActivity.class);

initRadios();

setupIntent();

}

/**

*初始化底部按钮

*/

privatevoidinitRadios(){

((RadioButton)findViewById(R.id.radio_button0)).setOnCheckedChangeListener(this);

((RadioButton)findViewById(R.id.radio_button1)).setOnCheckedChangeListener(this);

((RadioButton)findViewById(R.id.radio_button2)).setOnCheckedChangeListener(this);

((RadioButton)findViewById(R.id.radio_button3)).setOnCheckedChangeListener(this);

((RadioButton)findViewById(R.id.radio_button4)).setOnCheckedChangeListener(this);

}

/**

*切换模块

*/

@Override

publicvoidonCheckedChanged(CompoundButtonbuttonView,booleanisChecked){

if(isChecked){

switch(buttonView.getId()){

caseR.id.radio_button0:

this.mHost.setCurrentTabByTag("mblog_tab");

break;

caseR.id.radio_button1:

this.mHost.setCurrentTabByTag("message_tab");

break;

caseR.id.radio_button2:

this.mHost.setCurrentTabByTag("userinfo_tab");

break;

caseR.id.radio_button3:

this.mHost.setCurrentTabByTag("search_tab");

break;

caseR.id.radio_button4:

this.mHost.setCurrentTabByTag("more_tab");

break;

}

}

}

privatevoidsetupIntent(){

this.mHost=getTabHost();

TabHostlocalTabHost=this.mHost;

localTabHost.addTab(buildTabSpec("mblog_tab",R.string.main_home,

R.drawable.icon_1_n,this.mMBlogIntent));

localTabHost.addTab(buildTabSpec("message_tab",R.string.main_news,

R.drawable.icon_2_n,this.mInfoIntent));

localTabHost.addTab(buildTabSpec("userinfo_tab",R.string.main_my_info,

R.drawable.icon_3_n,this.mUserInfoIntent));

localTabHost.addTab(buildTabSpec("search_tab",R.string.menu_search,

R.drawable.icon_4_n,this.mSearchIntent));

localTabHost.addTab(buildTabSpec("more_tab",R.string.more,

R.drawable.icon_5_n,this.mMoreIntent));

}

privateTabHost.TabSpecbuildTabSpec(Stringtag,intresLabel,intresIcon,

finalIntentcontent){

returnthis.mHost

.newTabSpec(tag)

.setIndicator(getString(resLabel),

getResources().getDrawable(resIcon))

.setContent(content);