【Android(安卓)UI设计与开发】第08期:底部菜单栏(三)Fragment+FragmentTabHost实现仿新浪微博底部菜单栏
16lz
2021-01-25
转载请注明出处:http://blog.csdn.net/yangyu20121224/article/details/9016223
在上一篇文章中,我们花了大量的篇幅来讲解Fragment这个新引进类的使用,目的就是为了让大家能够牢牢的掌握它的使用方法,以便读者在今后的开发中能够熟练的使用它。
一、实现效果图
二、项目工程结构
三、详细代码编写
1、主tab布局界面,main_tab_layout:
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <FrameLayout android:id="@+id/realtabcontent" android:layout_width="fill_parent" android:layout_height="0dip" android:layout_weight="1" /> <android.support.v4.app.FragmentTabHost android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="@drawable/maintab_toolbar_bg"> <FrameLayout android:id="@android:id/tabcontent" android:layout_width="0dp" android:layout_height="0dp" android:layout_weight="0" /> </android.support.v4.app.FragmentTabHost></LinearLayout>
2、Tab按钮选项布局,tab_item_view.xml:
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" > <ImageView android:id="@+id/imageview" android:layout_width="wrap_content" android:layout_height="wrap_content" android:focusable="false" android:padding="3dp" android:src="@drawable/tab_home_btn"> </ImageView> <TextView android:id="@+id/textview" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="首页" android:textSize="10sp" android:textColor="#ffffff"> </TextView></LinearLayout>
3、fragment布局界面,这里只列出一个,fragment_1.xml:
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" > <ImageView android:id="@+id/imageview" android:layout_width="fill_parent" android:layout_height="fill_parent" android:scaleType="fitCenter" android:src="@drawable/xianjian01" > </ImageView></LinearLayout>
4、Tab选项的自定义按钮资源文件,列出其中一个按钮,tab_home_btn:
<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/icon_home_sel" android:state_selected="true"/> <item android:drawable="@drawable/icon_home_nor"/></selector>
5、Tab选项按钮背景资源文件,selector_tab_background.xml:
<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/home_btn_bg" android:state_pressed="true"/> <item android:drawable="@drawable/home_btn_bg" android:state_selected="true"/></selector>
6、主Activity类,MainTabActivity.java:
package com.yangyu.mycustomtab02;import android.os.Bundle;import android.support.v4.app.FragmentActivity;import android.support.v4.app.FragmentTabHost;import android.view.LayoutInflater;import android.view.View;import android.widget.ImageView;import android.widget.TabHost.TabSpec;import android.widget.TextView;/** * @author yangyu *功能描述:自定义TabHost */public class MainTabActivity extends FragmentActivity{//定义FragmentTabHost对象private FragmentTabHost mTabHost;//定义一个布局private LayoutInflater layoutInflater;//定义数组来存放Fragment界面private Class fragmentArray[] = {FragmentPage1.class,FragmentPage2.class,FragmentPage3.class,FragmentPage4.class,FragmentPage5.class};//定义数组来存放按钮图片private int mImageViewArray[] = {R.drawable.tab_home_btn,R.drawable.tab_message_btn,R.drawable.tab_selfinfo_btn, R.drawable.tab_square_btn,R.drawable.tab_more_btn};//Tab选项卡的文字private String mTextviewArray[] = {"首页", "消息", "好友", "广场", "更多"};public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main_tab_layout); initView(); } /** * 初始化组件 */private void initView(){//实例化布局对象layoutInflater = LayoutInflater.from(this);//实例化TabHost对象,得到TabHostmTabHost = (FragmentTabHost)findViewById(android.R.id.tabhost);mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent);//得到fragment的个数int count = fragmentArray.length;for(int i = 0; i < count; i++){//为每一个Tab按钮设置图标、文字和内容TabSpec tabSpec = mTabHost.newTabSpec(mTextviewArray[i]).setIndicator(getTabItemView(i));//将Tab按钮添加进Tab选项卡中mTabHost.addTab(tabSpec, fragmentArray[i], null);//设置Tab按钮的背景mTabHost.getTabWidget().getChildAt(i).setBackgroundResource(R.drawable.selector_tab_background);}}/** * 给Tab按钮设置图标和文字 */private View getTabItemView(int index){View view = layoutInflater.inflate(R.layout.tab_item_view, null);ImageView imageView = (ImageView) view.findViewById(R.id.imageview);imageView.setImageResource(mImageViewArray[index]);TextView textView = (TextView) view.findViewById(R.id.textview);textView.setText(mTextviewArray[index]);return view;}}
7、Fragment页面,FragmentPage1.java:
package com.yangyu.mycustomtab02;import android.os.Bundle;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;public class FragmentPage1 extends Fragment{@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {return inflater.inflate(R.layout.fragment_1, null);}}
源码下载地址
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