tabhost demo

package com.tab; import java.lang.reflect.Field; import android.app.AlertDialog; import android.app.TabActivity; import android.app.AlertDialog.Builder; import android.content.DialogInterface; import android.content.Intent; import android.content.res.ColorStateList; import android.content.res.XmlResourceParser; import android.os.Build; import android.os.Bundle; import android.util.Log; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.widget.ImageView; import android.widget.TabHost; import android.widget.TabWidget; import android.widget.TextView; import android.widget.Toast; import android.widget.TabHost.OnTabChangeListener; import android.widget.TabHost.TabContentFactory; import android.widget.TabHost.TabSpec; public class TabManager extends TabActivity { private TabManager th; private TabWidget tabWidget; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.tab_content); th = this; Constant.tabHost = (TabHost) findViewById(android.R.id.tabhost); LayoutInflater.from(this).inflate(R.layout.tabcontent, Constant.tabHost.getTabContentView(), true); tabWidget = Constant.tabHost.getTabWidget(); Constant.tabHost.addTab(Constant.tabHost.newTabSpec("tab1") .setIndicator( "Tab1", th.getResources().getDrawable( R.drawable.ic_menu_home_tab)).setContent( new Intent(this, Tab1.class))); Constant.tabHost.addTab(Constant.tabHost.newTabSpec("tab2") .setIndicator( "Tab2", th.getResources().getDrawable( R.drawable.ic_menu_camera_tab)).setContent( new Intent(this, Tab2.class))); Constant.tabHost.addTab(Constant.tabHost.newTabSpec("tab3") .setIndicator( "Tab3", th.getResources().getDrawable( R.drawable.ic_menu_search_tab)).setContent( new Intent(this, Tab3.class))); Constant.tabHost.addTab(Constant.tabHost.newTabSpec("tab4") .setIndicator( "Tab4", th.getResources().getDrawable( R.drawable.ic_menu_upload_tab)).setContent( new Intent(this, Tab4.class))); TabHost.TabSpec tabSpec = Constant.tabHost.newTabSpec("tab5") .setIndicator( "Tab6", th.getResources().getDrawable( R.drawable.ic_menu_preferences_tab)); tabSpec.setContent(R.id.imglay); Constant.tabHost.addTab(tabSpec); View view = tabWidget.getChildAt(4); view.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { AlertDialog.Builder builder = new Builder(TabManager.this); builder.setMessage("没有正常网络连接，请检查网络设置"); builder.setTitle("提示"); builder.setPositiveButton("确认", new android.content.DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub dialog.dismiss(); } }); builder.setNegativeButton("确认", new android.content.DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); builder.create().show(); } }); Constant.tabHost.setCurrentTab(0); // new Alert(th).setBuilder(1, null, Build.BOARD+"\n"+ // Build.BRAND+"\n"+Build.DEVICE+"\n"+Build.DISPLAY+"\n"+Build.FINGERPRINT+"\n"+ // Build.HOST+"\n"+Build.ID+"\n"+Build.MODEL+"\n"+Build.PRODUCT+"\n"+Build.TAGS+"\n"+Build.TIME+"\n"+ // Build.TYPE+"\n"+Build.USER+"\n"+Build.VERSION.RELEASE+":"+Build.VERSION.INCREMENTAL+":"+Build.VERSION.SDK, // null, null); Field mBottomLeftStrip; Field mBottomRightStrip; for (int i = 0; i < tabWidget.getChildCount(); i++) { /** * 此方法是为了去掉系统默认的色白的底角 在 TabWidget中mBottomLeftStrip、mBottomRightStrip * 都是私有变量，但是我们可以通过反射来获取 由于还不知道Android 2.2的接口是怎么样的，现在先加个判断好一些 */ if (Integer.parseInt(Build.VERSION.SDK) <= 5) { /* try { mBottomLeftStrip = tabWidget.getClass().getDeclaredField( "mBottomLeftStrip"); mBottomRightStrip = tabWidget.getClass().getDeclaredField( "mBottomRightStrip"); if (!mBottomLeftStrip.isAccessible()) { mBottomLeftStrip.setAccessible(true); } if (!mBottomRightStrip.isAccessible()) { mBottomRightStrip.setAccessible(true); } mBottomLeftStrip.set(tabWidget, getResources().getDrawable( R.drawable.tab_one_normal)); mBottomRightStrip.set(tabWidget, getResources() .getDrawable(R.drawable.tab_one_normal)); } catch (Exception e) { e.printStackTrace(); }*/ } else { // 貌似也可以去掉系统默认的色白的底角 Constant.tabHost.setPadding(Constant.tabHost.getPaddingLeft(), Constant.tabHost.getPaddingTop(), Constant.tabHost .getPaddingRight(), Constant.tabHost .getPaddingBottom()-1 );//原文是-5，我这边试了一下，-1最好。 } View v = tabWidget.getChildAt(i); // 设置tab背景颜色 v.setBackgroundResource(R.drawable.tab_indicator); // 设置tab中标题文字的颜色，不然默认为黑色 XmlResourceParser xpp = getResources().getXml( R.color.tab_font_selector); try { ColorStateList csl = ColorStateList.createFromXml( getResources(), xpp); TextView tv = (TextView) tabWidget.getChildAt(i).findViewById( android.R.id.title); tv.setTextColor(csl); } catch (Exception e) { } } Constant.tabHost.setOnTabChangedListener(new OnTabChangeListener() { public void onTabChanged(String tabId) { } }); } }