这回要介绍的是Android的Tab控件,Tab控件可以达到分页的效果,让一个屏幕的内容尽量丰富,当然也会增加开发的复杂程度,在有必要的时候再使用。Android的Tab控件使用起来有点奇怪,必须包含和按照以下的顺序:
TabHost控件->TabWidget(必须命名为tabs)->FrameLayout(必须命名为tabcontent)。
接下来贴出本例运行的截图:
main.xml的源码:
- <? xml version = "1.0" encoding = "utf-8" ?>
- < TabHost android:layout_width = "fill_parent"
- android:layout_height = "fill_parent" xmlns:android = "http://schemas.android.com/apk/res/android" android:id = "@android:id/TabHost1" >
- < TabWidget android:id = "@android:id/tabs"
- android:layout_height = "wrap_content" android:layout_width = "fill_parent" >
- </ TabWidget >
- < FrameLayout android:id = "@android:id/tabcontent"
- android:paddingTop = "65px" android:layout_width = "fill_parent" android:layout_height = "fill_parent" >
- < LinearLayout android:layout_height = "wrap_content" android:id = "@+id/Tab1" android:orientation = "vertical" android:layout_width = "fill_parent" >
- < EditText android:layout_height = "wrap_content" android:id = "@+id/edtTab1" android:layout_width = "fill_parent" > </ EditText >
- < Button android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:id = "@+id/btnTab1" android:text = "Tab1" > </ Button >
- </ LinearLayout >
- < LinearLayout android:layout_height = "wrap_content" android:id = "@+id/Tab2" android:layout_width = "fill_parent" android:orientation = "horizontal" >
- < EditText android:layout_height = "wrap_content" android:id = "@+id/edtTab2" android:layout_width = "wrap_content" android:layout_weight = "300" > </ EditText >
- < Button android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:id = "@+id/btnTab2" android:text = "Tab2" > </ Button > </ LinearLayout >
- </ FrameLayout >
- </ TabHost >
程序源码:
- package com.testTab;
- import android.app.TabActivity;
- import android.os.Bundle;
- import android.view.View;
- import android.widget.Button;
- import android.widget.EditText;
- import android.widget.TabHost;
- import android.widget.TabHost.TabSpec;
- public class testTab extends TabActivity { //基于TabActivity构建
- Button btnTab1,btnTab2;
- EditText edtTab1,edtTab2;
- /** Called when the activity is first created. */
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super .onCreate(savedInstanceState);
- setContentView(R.layout.main);
- TabHost tabs = getTabHost();
- //设置Tab1
- TabSpec tab1 = tabs.newTabSpec("tab1" );
- tab1.setIndicator("tab1" ); // 设置tab1的名称
- tab1.setContent(R.id.Tab1); // 关联控件
- tabs.addTab(tab1); // 添加tab1
- btnTab1=(Button)this .findViewById(R.id.btnTab1);
- edtTab1=(EditText)this .findViewById(R.id.edtTab1);
- btnTab1.setOnClickListener(new ClickEvent());
- //设置Tab2
- TabSpec tab2 = tabs.newTabSpec("tab2" );
- tab2.setIndicator("tab2" );
- tab2.setContent(R.id.Tab2);
- tabs.addTab(tab2);
- btnTab2=(Button)this .findViewById(R.id.btnTab2);
- edtTab2=(EditText)this .findViewById(R.id.edtTab2);
- btnTab2.setOnClickListener(new ClickEvent());
- tabs.setCurrentTab(0 );
- }
- class ClickEvent implements View.OnClickListener {
- @Override
- public void onClick(View v) {
- if (v==btnTab1)
- {
- edtTab1.setText("tab1" );
- }
- else if (v==btnTab2)
- {
- edtTab2.setText("tab2" );
- }
- }
- }
- }