我是靠谱客的博主 微笑唇彩,这篇文章主要介绍TabHost与Activity,现在分享给大家,希望可以做个参考。

1、mainactivity 的layout:

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<?xml version="1.0" encoding="utf-8"?> <TabHost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent" > <LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <FrameLayout android:id="@android:id/tabcontent" android:layout_width="fill_parent" android:layout_height="0dp" android:layout_weight="1" > </FrameLayout> <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical" > <TabWidget android:id="@android:id/tabs" android:layout_width="fill_parent" android:layout_height="wrap_content" > </TabWidget> </LinearLayout> </LinearLayout> </TabHost>


 

2、selector.xml

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<?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" > <View android:id="@+id/tabIndicator" android:layout_width="fill_parent" android:layout_height="3dp" android:background="#a70000" /> <View android:id="@+id/tabDivider" android:layout_width="fill_parent" android:layout_height="1dp" android:background="#2b2e39" /> <LinearLayout android:id="@+id/tabView" android:layout_width="fill_parent" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" android:padding="7dp" > <ImageView android:id="@+id/tab_iv_icon" android:layout_width="30px" android:layout_height="30px" android:scaleType="fitCenter" android:src="@drawable/ic_launcher" /> <TextView android:id="@+id/tab_tv_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="15.0sp" /> </LinearLayout> </LinearLayout>

 

3、MainActivity

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package com.example.tabhostdemo; import android.os.Bundle; import android.app.Activity; import android.app.TabActivity; import android.content.Intent; import android.view.Menu; import android.view.View; import android.widget.TabHost; import android.widget.TabWidget; import android.widget.TextView; import android.widget.TabHost.OnTabChangeListener; import android.widget.TabHost.TabSpec; public class MainActivity extends TabActivity{ private TabHost tabHost; private TabWidget tabWidget; private int preTabId = 0; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tabHost = this.getTabHost(); tabWidget = this.getTabWidget(); tabHost.setFocusable(true); tabHost.setOnTabChangedListener(new OnTabChangeListener() { @Override public void onTabChanged(String tabId) { // TODO Auto-generated method stub int tId = Integer.parseInt(tabId); if(tId != preTabId) { setTabBg(tId, true); setTabBg(preTabId, false); preTabId = tId; } } }); Intent intent = new Intent(this, Activity1.class); tabHost.addTab(buildTabSpec("0", "标签1", intent)); intent = new Intent(this, Activity2.class); tabHost.addTab(buildTabSpec("1", "标签2", intent)); intent = new Intent(this, Activity3.class); tabHost.addTab(buildTabSpec("2", "标签3", intent)); intent = new Intent(this, Activity4.class); tabHost.addTab(buildTabSpec("3", "标签4", intent)); } private TabSpec buildTabSpec(String tabId, String tag1, Intent intent) { try { View view = View.inflate(this, R.layout.selector, null); ((TextView) view.findViewById(R.id.tab_tv_text)).setText(tag1); if(tabId.equals("0")){ view.findViewById(R.id.tabIndicator).setVisibility(View.VISIBLE); view.findViewById(R.id.tabDivider).setVisibility(View.INVISIBLE); } else{ view.findViewById(R.id.tabIndicator).setVisibility(View.INVISIBLE); view.findViewById(R.id.tabDivider).setVisibility(View.VISIBLE); } return tabHost.newTabSpec(tabId).setIndicator(view).setContent(intent); } catch (Exception e) { e.printStackTrace(); } return null; } private void setTabBg(int tabId, boolean isSelected){ System.out.println("tabId:" + tabId); View myTabView = tabWidget.getChildTabViewAt(tabId); View tabIndicator = myTabView.findViewById(R.id.tabIndicator); View tabDivider = myTabView.findViewById(R.id.tabDivider); View tabView = myTabView.findViewById(R.id.tabView); if(isSelected){ tabIndicator.setVisibility(View.VISIBLE); tabDivider.setVisibility(View.INVISIBLE); tabView.setBackgroundColor(0x14161d); } else{ tabIndicator.setVisibility(View.INVISIBLE); tabDivider.setVisibility(View.VISIBLE); tabView.setBackgroundColor(0x272c39); } } }



 

最后

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