实例介绍
【实例简介】
【实例截图】
通过TabWidget实现
实现方式二:隐藏TabWidget,通过RadioGroup和RadioButton实现底部菜单栏
实现方式一:通过TabWidget实现
这种方式主要是在布局中将TabWidget标签嵌套在RelativeLayout中,并且在TabWidget标签中中设置 android:layout_alignParentBottom="true"
另外,下划线和选项卡之间的线去除的方法时在TabWidget标签中设置属性android:tabStripEnabled="false"
xml:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | <? xml version = "1.0" encoding = "utf-8" ?> android:id = "@android:id/tabhost" android:layout_width = "fill_parent" android:layout_height = "fill_parent" android:orientation = "vertical" > < FrameLayout android:id = "@android:id/tabcontent" android:layout_width = "fill_parent" android:layout_height = "fill_parent" android:padding = "5dp" ></ FrameLayout > < RelativeLayout android:layout_width = "fill_parent" android:layout_height = "fill_parent" > <!-- tabStripEnabled属性去掉底部下划线与选项卡间的下划线 --> <!-- layout_alignParentBottom属性即可将其放在底部菜单栏,注意,必须在RelativeLayout里 --> < TabWidget android:id = "@android:id/tabs" android:tabStripEnabled = "false" android:background = "#6E6E6E" android:layout_width = "fill_parent" android:layout_height = "wrap_content" android:layout_alignParentBottom = "true" ></ TabWidget > </ RelativeLayout > </ TabHost > |
实现代码如下
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | package com.loulijun.demo1; import android.app.TabActivity; import android.content.Intent; import android.os.Bundle; import android.widget.TabHost; public class Demo1Activity extends TabActivity { /** Called when the activity is first created. */ private TabHost tabhost; private Intent intent1, intent2, intent3, intent4; @Override public void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.main); tabhost = getTabHost(); intent1 = new Intent(Demo1Activity. this , One. class ); tabhost.addTab(tabhost.newTabSpec( "one" ) .setIndicator( "电话" ,getResources().getDrawable(android.R.drawable.ic_menu_call)) .setContent(intent1)); intent2 = new Intent(Demo1Activity. this , Two. class ); tabhost.addTab(tabhost.newTabSpec( "two" ) .setIndicator( "相机" ,getResources().getDrawable(android.R.drawable.ic_menu_camera)) .setContent(intent2)); intent3 = new Intent(Demo1Activity. this , Three. class ); tabhost.addTab(tabhost.newTabSpec( "three" ) .setIndicator( "分享" ,getResources().getDrawable(android.R.drawable.ic_menu_share)) .setContent(intent3)); intent4 = new Intent(Demo1Activity. this , Four. class ); tabhost.addTab(tabhost.newTabSpec( "four" ) .setIndicator( "更多" ,getResources().getDrawable(android.R.drawable.ic_menu_more)) .setContent(intent4)); } } |
实现方式二:隐藏TabWidget,通过RadioGroup和RadioButton实现底部菜单栏
这种方式更漂亮,也更灵活,网上基本用的是这种方式,通过setCurrentTabByTag来切换不同的选项卡
main.xml:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | <? xml version = "1.0" encoding = "utf-8" ?> android:id = "@android:id/tabhost" android:layout_width = "fill_parent" android:layout_height = "fill_parent" > < 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:layout_width = "fill_parent" android:layout_height = "wrap_content" android:layout_weight = "0.0" android:visibility = "gone" /> < RadioGroup android:id = "@ id/main_tab" android:background = "@drawable/maintab_toolbar_bg" android:orientation = "horizontal" android:layout_width = "fill_parent" android:layout_height = "wrap_content" android:gravity = "center_vertical" android:layout_gravity = "bottom" > < RadioButton android:layout_marginTop = "2.0dip" android:text = "@string/main_home" android:drawableTop = "@drawable/icon_1_n" android:id = "@ id/radio_button0" style = "@style/main_tab_bottom" /> < RadioButton android:layout_marginTop = "2.0dip" android:text = "@string/main_news" android:drawableTop = "@drawable/icon_2_n" android:id = "@ id/radio_button1" style = "@style/main_tab_bottom" /> < RadioButton android:layout_marginTop = "2.0dip" android:text = "@string/main_my_info" android:drawableTop = "@drawable/icon_3_n" android:id = "@ id/radio_button2" style = "@style/main_tab_bottom" /> < RadioButton android:layout_marginTop = "2.0dip" android:text = "@string/menu_search" android:drawableTop = "@drawable/icon_4_n" android:id = "@ id/radio_button3" style = "@style/main_tab_bottom" /> < RadioButton android:layout_marginTop = "2.0dip" android:text = "@string/more" android:drawableTop = "@drawable/icon_5_n" android:id = "@ id/radio_button4" style = "@style/main_tab_bottom" /> </ RadioGroup > </ LinearLayout > </ TabHost > |
drawable/home_btn_bg.xml:切换时的效果:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | <? xml version = "1.0" encoding = "UTF-8" ?> < selector < item android:state_focused = "true" android:state_enabled = "true" android:state_pressed = "false" android:drawable = "@drawable/home_btn_bg_s" /> < item android:state_enabled = "true" android:state_pressed = "true" android:drawable = "@drawable/home_btn_bg_s" /> < item android:state_enabled = "true" android:state_checked = "true" android:drawable = "@drawable/home_btn_bg_d" /> < item android:drawable = "@drawable/transparent" /> </ selector > string/dimens.xml 尺寸文件: <? xml version = "1.0" encoding = "utf-8" ?> < resources > < dimen name = "bottom_tab_padding_drawable" >2.0dip</ dimen > < dimen name = "bottom_tab_padding_up" >5.0dip</ dimen > < dimen name = "bottom_tab_font_size" >10.0dip</ dimen > </ resources > string/drawables.xml 设置为透明: <? xml version = "1.0" encoding = "utf-8" ?> < resources > < item type = "drawable" name = "transparent" >#00000000</ item > </ resources > string/styles.xml 样式文件: <? xml version = "1.0" encoding = "utf-8" ?> < resources > < style name = "main_tab_bottom" > < item name = "android:textSize" >@dimen/bottom_tab_font_size</ item > < item name = "android:textColor" >#ffffffff</ item > < item name = "android:ellipsize" >marquee</ item > < item name = "android:gravity" >center_horizontal</ item > < item name = "android:background" >@drawable/home_btn_bg</ item > < item name = "android:paddingTop" >@dimen/bottom_tab_padding_up</ item > < item name = "android:layout_width" >fill_parent</ item > < item name = "android:layout_height" >wrap_content</ item > < item name = "android:button" >@null</ item > < item name = "android:singleLine" >true</ item > < item name = "android:drawablePadding" >@dimen/bottom_tab_padding_drawable</ item > < item name = "android:layout_weight" >1.0</ item > </ style > </ resources > |
代码实现:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | import android.app.TabActivity; import android.content.Intent; import android.os.Bundle; import android.view.Window; import android.widget.RadioGroup; import android.widget.TabHost; import android.widget.RadioGroup.OnCheckedChangeListener; public class MainTabActivity extends TabActivity implements OnCheckedChangeListener{ private RadioGroup mainTab; private TabHost tabhost; private Intent iHome; private Intent iNews; private Intent iInfo; private Intent iSearch; private Intent iMore; @Override public void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.main); mainTab=(RadioGroup)findViewById(R.id.main_tab); mainTab.setOnCheckedChangeListener( this ); tabhost = getTabHost(); iHome = new Intent( this , HomeActivity. class ); tabhost.addTab(tabhost.newTabSpec( "iHome" ) .setIndicator(getResources().getString(R.string.main_home), getResources().getDrawable(R.drawable.icon_1_n)) .setContent(iHome)); iNews = new Intent( this , NewsActivity. class ); tabhost.addTab(tabhost.newTabSpec( "iNews" ) .setIndicator(getResources().getString(R.string.main_news), getResources().getDrawable(R.drawable.icon_2_n)) .setContent(iNews)); iInfo = new Intent( this , MyInfoActivity. class ); tabhost.addTab(tabhost.newTabSpec( "iInfo" ) .setIndicator(getResources().getString(R.string.main_my_info), getResources().getDrawable(R.drawable.icon_3_n)) .setContent(iInfo)); iSearch = new Intent( this ,SearchActivity. class ); tabhost.addTab(tabhost.newTabSpec( "iSearch" ) .setIndicator(getResources().getString(R.string.menu_search), getResources().getDrawable(R.drawable.icon_4_n)) .setContent(iSearch)); iMore = new Intent( this , MoreActivity. class ); tabhost.addTab(tabhost.newTabSpec( "iMore" ) .setIndicator(getResources().getString(R.string.more), getResources().getDrawable(R.drawable.icon_5_n)) .setContent(iMore)); } @Override public void onCheckedChanged(RadioGroup group, int checkedId) { switch (checkedId){ case R.id.radio_button0: this .tabhost.setCurrentTabByTag( "iHome" ); break ; case R.id.radio_button1: this .tabhost.setCurrentTabByTag( "iNews" ); break ; case R.id.radio_button2: this .tabhost.setCurrentTabByTag( "iInfo" ); break ; case R.id.radio_button3: this .tabhost.setCurrentTabByTag( "iSearch" ); break ; case R.id.radio_button4: this .tabhost.setCurrentTabByTag( "iMore" ); break ; } } } |
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