本文主要是介绍TabHost两种实现方式及各个方法的作用,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
android开发tabhost的两种方式
找了好多资料,最后总结一下,以后用到的话可以查阅
TabHost ,它是一个用来存放多个Tab标签的容器。其方法setup主要完成的功能便是实例化TabHost的TabWidget和TabContent。
各个方法的作用:
要用到tab组件,布局layout中必须有TabHost文件,它有一个id,比如 android:id="@+id/tabhost" 或者android:id="@android:id/tabhost"
在TabHost中一般必须有TabWidget,这个主要是用来处理tab的位置、属性等。一般还有FrameLayout组件,用于定义显示的在Tab下显示的组件。
例如:
TabHost tabs = (TabHost) findViewById(R.id.tabhost);
tabs.setup();
TabHost.TabSpec spec = tabs.newTabSpec("tag1");
spec.setContent(R.id.tab1);
spec.setIndicator("Clock");
tabs.addTab(spec);
其中tabs.newTabSpec("tag1")用来new一个tab,同时标记这个tab的tag
setContent()用来处理点击这个tab后的动作,可以是这个Activity下的一个组件,如setContent(R.id.tab1),也可以是一个intent,比如:setContent(new Intent(this, SubTab.class))
setIndicator()用来标记这个tab的名字,可以是setIndicator("Clock"),也可以包含其他的属性,如图片:setIndicator( "商场",getResources().getDrawable(android.R.drawable.arrow_down_float))
tabs.addTab(spec)将这个tab添加如TabHost
例子一枚:
package com.my.tabwidget;
- import java.util.ArrayList;
- import java.util.List;
- import android.app.TabActivity;
- import android.graphics.Color;
- import android.os.Bundle;
- import android.view.Gravity;
- import android.view.View;
- import android.widget.ImageView;
- import android.widget.LinearLayout;
- import android.widget.TabHost;
- import android.widget.TabHost.OnTabChangeListener;
- import android.widget.TextView;
- @SuppressWarnings("deprecation")
- public class MainActivity extends TabActivity {
- //声明TabHost对象
- TabHost mTabHost;
- public List<ImageView> imageList = new ArrayList<ImageView>();
- /** Called when the activity is first created. */
- @Override
- public void onCreate(Bundle savedInstanceState)
- {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- //取得TabHost对象
- mTabHost = getTabHost();
- /* 为TabHost添加标签 */
- //新建一个newTabSpec(newTabSpec)
- //设置其标签和图标(setIndicator)
- //设置内容(setContent)
- mTabHost.addTab(mTabHost.newTabSpec("tab_test1")
- .setIndicator(composeLayout("TAB_1", R.drawable.img1))
- .setContent(R.id.textview1));
- mTabHost.addTab(mTabHost.newTabSpec("tab_test2")
- .setIndicator(composeLayout("TAB_2", R.drawable.img2))
- .setContent(R.id.textview2));
- mTabHost.addTab(mTabHost.newTabSpec("tab_test3")
- .setIndicator(composeLayout("TAB_3", R.drawable.img3))
- .setContent(R.id.textview3));
- //设置TabHost的背景颜色
- //mTabHost.setBackgroundColor(Color.argb(150, 22, 70, 150));
- //设置TabHost的背景图片资源
- //mTabHost.setBackgroundResource(R.drawable.image1);
- //设置当前显示哪一个标签
- mTabHost.setCurrentTab(0);
- imageList.get(0).setImageDrawable(getResources().getDrawable(R.drawable.img01));
-
- //标签切换事件处理,setOnTabChangedListener
- mTabHost.setOnTabChangedListener(new OnTabChangeListener()
- {
- // TODO Auto-generated method stub
- @Override
- public void onTabChanged(String tabId)
- {
- // 设置所有选项卡的图片为未选中图片
- imageList.get(0).setImageDrawable(getResources().getDrawable(R.drawable.img1));
- imageList.get(1).setImageDrawable(getResources().getDrawable(R.drawable.img2));
- imageList.get(2).setImageDrawable(getResources().getDrawable(R.drawable.img3));
- if (tabId.equalsIgnoreCase("tab_test1")) {
- imageList.get(0).setImageDrawable(getResources().getDrawable(R.drawable.img01));
- // 移动底部背景图片
- //moveTopSelect(0);
- } else if (tabId.equalsIgnoreCase("tab_test2")) {
- imageList.get(1).setImageDrawable(getResources().getDrawable(R.drawable.img02));
- // 移动底部背景图片
- //moveTopSelect(1);
- } else if (tabId.equalsIgnoreCase("tab_test3")) {
- imageList.get(2).setImageDrawable(getResources().getDrawable(R.drawable.img03));
- // 移动底部背景图片
- //moveTopSelect(2);
- }
- }
- });
- }
- /**
- * 这个设置Tab标签本身的布局,需要TextView和ImageView不能重合 s:是文本显示的内容 i:是ImageView的图片位置
- */
- public View composeLayout(String s, int i) {
- // 定义一个LinearLayout布局
- LinearLayout layout = new LinearLayout(this);
- // 设置布局垂直显示
- layout.setOrientation(LinearLayout.VERTICAL);
- ImageView iv = new ImageView(this);
- imageList.add(iv);
- iv.setImageResource(i);
- //设置图片布局
- LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, 50);
- lp.setMargins(0, 0, 0, 0);
- layout.addView(iv, lp);
- // 定义TextView
- TextView tv = new TextView(this);
- tv.setGravity(Gravity.CENTER);
- tv.setSingleLine(true);
- tv.setText(s);
- tv.setTextColor(Color.BLACK);
- tv.setTextSize(10);
- //设置Text布局
- layout.addView(tv, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
- return layout;
- }
- }
第一种:
不用继承TabActivity,在布局文件中定义TabHost即可,但是TabWidget的id必须是
@android:id/tabs,FrameLayout的id必须是@android:id/tabcontent。TabHost的id可以自定义.
xml布局:
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:id="@+id/hometabs"
- android:orientation="vertical"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent">
- <TabHost android:id="@+id/tabhost"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content">
- <LinearLayout
- android:orientation="vertical"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent">
- <TabWidget android:id="@android:id/tabs"
- android:orientation="horizontal"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content">
- </TabWidget>
- <FrameLayout android:id="@android:id/tabcontent"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content">
- <TextView android:id="@+id/view1"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"/>
- <TextView android:id="@+id/view2"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"/>
- <TextView android:id="@+id/view3"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"/>
- </FrameLayout>
- </LinearLayout>
- </TabHost>
- </LinearLayout>
- java代码:
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.hometabs);
- TabHost tabHost = (TabHost) findViewById(R.id.tabhost);
- tabHost.setup();
- TabWidget tabWidget = tabHost.getTabWidget();
- tabHost.addTab(tabHost.newTabSpec("tab1")
- .setIndicator("tab1", getResources().getDrawable(R.drawable.mumule))
- .setContent(R.id.view1));
- tabHost.addTab(tabHost.newTabSpec("tab3")
- .setIndicator("tab3")
- .setContent(R.id.view3));
- tabHost.addTab(tabHost.newTabSpec("tab2")
- .setIndicator("tab2")
- .setContent(R.id.view2));
- final int tabs = tabWidget.getChildCount();
- Log.i(TAG, "***tabWidget.getChildCount() : " + tabs);
- final int tabWidth = 90;
- final int tabHeight = 45;
- for (int i = 0; i < tabs; i++) {
- /* final View view = tabWidget.getChildAt(i);
- view.getLayoutParams().width = tabWidth;
- view.getLayoutParams().height = tabHeight;
- final TextView tv = (TextView) view.findViewById(android.R.id.title);
- tv.setTextColor(this.getResources().getColorStateList(android.R.color.black));
- MarginLayoutParams tvMLP = (MarginLayoutParams)tv.getLayoutParams();
- tvMLP.bottomMargin = 8;*/
- }
- }
第二种:
第一种:继承TabActivity,从TabActivity中用getTabHost()方法获取TabHost。只要定义具体Tab内容布局就行了.
xml布局:
- <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="fill_parent" android:layout_height="fill_parent">
- <LinearLayout android:id="@+id/widget_layout_Blue"
- android:layout_width="fill_parent" android:layout_height="fill_parent"
- android:orientation="vertical" >
- <EditText android:id="@+id/widget34" android:layout_width="fill_parent"
- android:layout_height="wrap_content" android:text="EditText"
- android:textSize="18sp">
- </EditText>
- <Button android:id="@+id/widget30" android:layout_width="wrap_content"
- android:layout_height="wrap_content" android:text="Button">
- </Button>
- </LinearLayout>
- <LinearLayout android:id="@+id/widget_layout_red"
- android:layout_width="fill_parent" android:layout_height="fill_parent"
- android:orientation="vertical" >
- <AnalogClock android:id="@+id/widget36"
- android:layout_width="wrap_content" android:layout_height="wrap_content">
- </AnalogClock>
- </LinearLayout>
- <LinearLayout android:id="@+id/widget_layout_green"
- android:layout_width="fill_parent" android:layout_height="fill_parent"
- android:orientation="vertical">
- <RadioGroup android:id="@+id/widget43"
- android:layout_width="166px" android:layout_height="98px"
- android:orientation="vertical">
- <RadioButton android:id="@+id/widget44"
- android:layout_width="wrap_content" android:layout_height="wrap_content"
- android:text="RadioButton">
- </RadioButton>
- <RadioButton android:id="@+id/widget45"
- android:layout_width="wrap_content" android:layout_height="wrap_content"
- android:text="RadioButton">
- </RadioButton>
- </RadioGroup>
- </LinearLayout>
- </FrameLayout>
- java代码:
- super.onCreate(savedInstanceState);
- myTabhost=this.getTabHost();
- //get Tabhost
- LayoutInflater.from(this).inflate(R.layout.main, myTabhost.getTabContentView(), true);
- myTabhost.setBackgroundColor(Color.argb(150, 22, 70, 150));
- myTabhost
- .addTab(myTabhost.newTabSpec("One")// make a new Tab
- .setIndicator("A")
- // set the Title and Icon
- .setContent(R.id.widget_layout_Blue));
- // set the layout
- myTabhost
- .addTab(myTabhost.newTabSpec("Two")// make a new Tab
- .setIndicator("B",
- getResources().getDrawable(R.drawable.mumule))
- // set the Title and Icon
- .setContent(R.id.widget_layout_green));
- // set the layout
- myTabhost
- .addTab(myTabhost.newTabSpec("Three")// make a new Tab
- .setIndicator("C",
- getResources().getDrawable(R.drawable.notepad))
- // set the Title and Icon
- .setContent(R.id.widget_layout_red));
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