tabhost使用

Posted 2020-06-13

Tabhost用法

使用方法一:使用同一个布局文件

在xml中如此定义tabhost：

<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"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.hello.MainActivity" >

 

    <TabHost

        android:id="@+id/mytabhost"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:layout_alignParentBottom="true"

        android:layout_alignParentLeft="true" >

 

        <LinearLayout

            android:layout_width="match_parent"

            android:layout_height="match_parent"

            android:orientation="vertical" >

 

            <TabWidget

                android:id="@android:id/tabs"

                android:layout_width="match_parent"

                android:layout_height="wrap_content" >

            </TabWidget>

 

            <FrameLayout

                android:id="@android:id/tabcontent"

                android:layout_width="match_parent"

                android:layout_height="match_parent" >

 

                <LinearLayout

                    android:id="@+id/tab1"

                    android:layout_width="match_parent"

                    android:layout_height="match_parent"

                    android:orientation="vertical" >

                    <TextView

                        android:id="@+id/text1"

                    android:layout_width="match_parent"

                    android:layout_height="match_parent"

                    android:text="hellllllll"></TextView>

                </LinearLayout>

 

                <LinearLayout

                    android:id="@+id/tab2"

                    android:layout_width="match_parent"

                    android:layout_height="match_parent"

                    android:orientation="vertical">

                    <TextView

                        android:id="@+id/text2"

                    android:layout_width="match_parent"

                    android:layout_height="match_parent"

                    android:text="hellllllll"></TextView>

                </LinearLayout>

 

                <LinearLayout

                    android:id="@+id/tab3"

                    android:layout_width="match_parent"

                    android:layout_height="match_parent"

                    android:orientation="vertical">

                    <ImageView

                         android:id="@+id/img1"

                       android:layout_width="wrap_content"

                        android:layout_height="wrap_content"

                         android:src="@drawable/ic_launcher"/>

                </LinearLayout>

               

            </FrameLayout>

        </LinearLayout>

    </TabHost>

 

</RelativeLayout>

对应的activity中这么写：

public class Tabs extends ActionBarActivity{

 

         TabHost tabHost=null;

         TabSpec spec=null;

         @Override

         protected void onCreate(Bundle savedInstanceState) {

                   // TODO Auto-generated method stub

                   super.onCreate(savedInstanceState);

                   setContentView(R.layout.tabs);

                   tabHost=(TabHost)findViewById(R.id.mytabhost);

                   tabHost.setup();//这句必须写，不然崩溃

                   //实现标签、id、设置content，三者缺一不可，最后将其添加到tabhost

                  

                   spec=tabHost.newTabSpec("tag1");

                   spec.setIndicator("课程");

                   spec.setContent(R.id.tab1);

                   tabHost.addTab(spec);

                  

                   spec=tabHost.newTabSpec("tag2");

                   spec.setIndicator("论坛");

                   spec.setContent(R.id.tab2);

                   tabHost.addTab(spec);

                  

                   spec=tabHost.newTabSpec("tag3");

                   spec.setIndicator("我的");

                   spec.setContent(R.id.tab3);

                   tabHost.addTab(spec);

         }

}

也可以通过以下java代码创建一个新的tab

spec=tabHost.newTabSpec("tag4");

        spec.setContent(new TabHost.TabContentFactory() {

               

            @Override

            public View createTabContent(String tag) {

                // TODO Auto-generated method stub

                TextView textView=new TextView(Tabs.this);

                textView.setText("123456");

                return textView;

            }

        });

        spec.setIndicator("new");

        tabHost.addTab(spec);

设置content的三种方式：

1）  使用布局文件

2）  用TabHost.TabContentFactory(如上面的java代码)

3）  用启动另一个布局的intent对象

以上三者均可以作为setContent的参数

设置indicator

可以是字符串、布局文件、图片。

 

注意：

1）  xml中FrameLayout中定义的布局，要都使用，如果不是用的话就会造成，未使用的布局和其他标签重合的现象。如下：

 

使用方法二：每个tab用不同的布局文件，使用LayoutInflater动态加载

Xml：

Tab1：

<LinearLayout 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"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.tabhost.MainActivity"

    android:orientation="vertical"

    android:id="@+id/tab1">

 

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/app_name" />

 

</LinearLayout>

Tab2:

<LinearLayout 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"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.tabhost.MainActivity"

    android:orientation="vertical"

    android:id="@+id/tab2">

 

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="第二个tab" />

 

</LinearLayout>

activity_main.xml:

<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"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.tabhost.MainActivity" >

 

    <TabHost

        android:id="@+id/tabhost"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginTop="22dp" >

 

        <LinearLayout

            android:layout_width="match_parent"

            android:layout_height="match_parent"

            android:orientation="vertical" >

 

            <TabWidget

                android:id="@android:id/tabs"

                android:layout_width="match_parent"

                android:layout_height="wrap_content" >

            </TabWidget>

 

            <FrameLayout

                android:id="@android:id/tabcontent"

                android:layout_width="match_parent"

                android:layout_height="match_parent" >

 

            </FrameLayout>

        </LinearLayout>

    </TabHost>

 

</RelativeLayout>

Activity:

MainActivity:

package com.example.tabhost;

 

import android.support.v7.app.ActionBarActivity;

import android.text.Layout;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.Menu;

import android.view.MenuItem;

import android.view.ViewGroup;

import android.widget.TabHost;

 

public class MainActivity extends ActionBarActivity {

 

        

         @Override

         protected void onCreate(Bundle savedInstanceState) {

                   super.onCreate(savedInstanceState);

                   setContentView(R.layout.activity_main);

                  

                   TabHost tabHost=(TabHost)findViewById(R.id.tabhost);

                   tabHost.setup();

                  

                   LayoutInflater inflater=LayoutInflater.from(this);

                   inflater.inflate(R.layout.tab1, tabHost.getTabContentView());//getTabContentView返回framelayout对应的view

                   inflater.inflate(R.layout.tab2, tabHost.getTabContentView());

                  

                   tabHost.addTab(tabHost.newTabSpec("状元").setContent(R.id.tab1).setIndicator("状元"));

                   tabHost.addTab(tabHost.newTabSpec("榜眼").setContent(R.id.tab2).setIndicator("榜眼"));

                  

         }

 

        

}