记录一下底部选项卡的实现,很常见的代码,大神勿嘲笑。
说一下思路,在activity底部要放上FragmentTabHost放上选项,几个无所谓,每个选项卡都对应一个fragment,点击选项卡颜色改变可以用selector(选择器)来实现,焦点选中的时候一个颜色,失去焦点的时候,另一个颜色。
首先,activity布局
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.sdtz.wenmingweifang.MainActivity"> <FrameLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:id="@+id/fl"> </FrameLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:background="#ffffff" android:gravity="center" android:orientation="vertical"> <android.support.v4.app.FragmentTabHost android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@+id/fl" android:id="@+id/tabHost"> </android.support.v4.app.FragmentTabHost> </LinearLayout> </RelativeLayout>
acitivity中主要代码的代码,其中view1,view2.....就是选项卡的内容,一般就是一张图片,下面一段文字(首页啥的),标红的部分,就是每个界面的fragment,可以在各个fragment中写每个界面的代码
tabHost = (FragmentTabHost) findViewById(R.id.tabHost); view = LayoutInflater.from(getBaseContext()).inflate(R.layout.pop_window1,null); view1 = LayoutInflater.from(getBaseContext()).inflate(R.layout.shouye_view,null); view2 = LayoutInflater.from(getBaseContext()).inflate(R.layout.shouye_2_view,null); view3 = LayoutInflater.from(getBaseContext()).inflate(R.layout.shouye_3,null); view4 = LayoutInflater.from(getBaseContext()).inflate(R.layout.shouye_4,null); view5 = LayoutInflater.from(getBaseContext()).inflate(R.layout.shouye_5,null); try{ tabHost.setup(this,getSupportFragmentManager(),R.id.fl); Fragment mainFragment = new MianFragment(); TabHost.TabSpec tabSpec0 = tabHost.newTabSpec(str[0]).setIndicator(view1); tabHost.addTab(tabSpec0,mainFragment.getClass(),null); Fragment SecondFragment = new SencondFragment(); TabHost.TabSpec tabSpec2 = tabHost.newTabSpec(str[1]).setIndicator(view2); tabHost.addTab(tabSpec2,SecondFragment.getClass(),null); Fragment ShezhiFragmet = new ShezhiFragment(); TabHost.TabSpec tabSpec1 = tabHost.newTabSpec(str[2]).setIndicator(view3); tabHost.addTab(tabSpec1,ShezhiFragmet.getClass(),null); Fragment MoreFragment = new MoreFragment(); TabHost.TabSpec tabSpec4 = tabHost.newTabSpec(str[3]).setIndicator(view4); tabHost.addTab(tabSpec4,MoreFragment.getClass(),null); Fragment MeFragment = new MeFragment(); TabHost.TabSpec tabSpec5 = tabHost.newTabSpec(str[4]).setIndicator(view5); tabHost.addTab(tabSpec5,MeFragment.getClass(),null); }catch (Exception e){ e.printStackTrace(); }
下面是选项卡的xml,标志的部分就是 选择器,标记的部分就是选择器,用来选项卡的颜色变化
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <ImageView android:layout_marginTop="@dimen/y10" android:layout_width="match_parent" android:layout_height="20dp" android:src="@drawable/shouye_view_select" android:id="@+id/img"/> <TextView android:layout_marginBottom="@dimen/y10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:gravity="center" android:textColor="@drawable/shouye_1_text" android:textSize="12sp" android:text="首页"/> </LinearLayout>
选择器代码:
就是有两张不同颜色的图片,焦点选中和不选中切换不同的图片,android:state_selected="true",就是焦点选中,
文字的选择器也是一样,切换不同的颜色
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_selected="true" android:drawable="@drawable/home_on"> </item> <item android:drawable="@drawable/home"> </item> </selector>
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_selected="true" android:color="#fd0101"> </item> <item android:color="#000000"> </item> </selector>
至此,选项卡的代码已经基本完成,调试一下就可以运行了