Android之實現底部TabHost

先說布局文件，如下：利用Android:layout_alignParentBottom="true" 實現底部顯示

1. <?xml version="1.0" encoding="utf-8"?>
2. <TabHost xmlns:android="http://schemas.android.com/apk/res/android"
3. android:id="@android:id/tabhost"
4. android:orientation="vertical"
5. android:layout_width="fill_parent"
6. android:layout_height="fill_parent">
7. <RelativeLayout
8. android:background="@drawable/g"
9. android:layout_width="fill_parent"
10. android:layout_height="fill_parent">
11. <TabWidget android:id="@android:id/tabs"
12. android:layout_width="fill_parent"
13. android:layout_height="wrap_content"
14. android:layout_alignParentBottom="true">
15. </TabWidget>
16. <FrameLayout android:id="@android:id/tabcontent"
17. android:layout_width="fill_parent"
18. android:layout_height="fill_parent">
19. <RelativeLayout android:id="@+id/tabFirst"
20. android:layout_width="fill_parent"
21. android:layout_height="fill_parent"
22. android:orientation="vertical">
23. <AnalogClock
24. android:id="@+id/widget31"
25. android:layout_width="wrap_content"
26. android:layout_height="wrap_content"
27. android:layout_centerInParent="true">
28. </AnalogClock>
29. </RelativeLayout>>
30. <RelativeLayout android:id="@+id/tabSecond"
31. android:layout_width="fill_parent"
32. android:layout_height="fill_parent"
33. android:orientation="vertical">
34. <DigitalClock
35. android:layout_centerInParent="true"
36. android:layout_width="wrap_content"
37. android:layout_height="wrap_content">
38. </DigitalClock>
39. </RelativeLayout>
40. </FrameLayout>
41. </RelativeLayout>
42. </TabHost>

1. package com.cloay;
3. import android.app.TabActivity;
4. import android.graphics.Color;
5. import android.os.Bundle;
6. import android.widget.TabHost;
7. import android.widget.TabHost.OnTabChangeListener;
8. import android.widget.Toast;
10. public class TabTestActivity extends TabActivity {
11. TabHost tabHost;
12. @Override
13. public void onCreate(Bundle savedInstanceState) {
14. super.onCreate(savedInstanceState);
15. setContentView(R.layout.main);
16. //獲取TabHost對象
17. tabHost = getTabHost();
18. // tabHost.setup();
19. //新建一個newTabSpec,設置標簽和圖標(setIndicator),設置內容(setContent)
20. tabHost.addTab(tabHost.newTabSpec("Test one").setIndicator("",getResources().getDrawable(android.R.drawable.ic_menu_call)).setContent(R.id.tabFirst));
21. tabHost.addTab(tabHost.newTabSpec("Test two").setIndicator("",getResources().getDrawable(android.R.drawable.ic_menu_camera)).setContent(R.id.tabSecond));
22. //設置TabHost的背景顏色
23. tabHost.setBackgroundColor(Color.argb(150,22,70,150));
24. //設置TabHost的背景圖片資源
25. // tabHost.setBackgroundResource(R.drawable.bg);
26. //設置當前現實哪一個標簽
27. tabHost.setCurrentTab(0); //0為標簽ID
28. //標簽切換處理，用setOnTabChangedListener
29. tabHost.setOnTabChangedListener(new OnTabChangeListener(){
30. public void onTabChanged(String tabId){
31. Toast.makeText(TabTestActivity.this, "This is a Test!", Toast.LENGTH_LONG).show();
32. }
33. });
34. }
35. }