Android中實現底部Tabhost【附源碼】

這個主要是實現底部的tabhost方式，tabhost就是有幾個標簽滑動的一個控件。activity繼承TabActivity
其他不多說了，直接上代碼

1. public class main extends TabActivity {
2. private TabHost tabHost;
3. private TabWidget tabWidget;
4. Field mBottomLeftStrip;
5. Field mBottomRightStrip;
7. @Override
8. public void onCreate(Bundle savedInstanceState) {
9. super.onCreate(savedInstanceState);
10. setContentView(R.layout.main);
12. makeTab();
13. }
15. public void makeTab() {
16. if (this.tabHost == null) {
17. tabHost = getTabHost();
18. tabWidget = getTabWidget();
19. tabHost.setup();
20. tabHost.bringToFront();
22. TabSpec firsttab = tabHost.newTabSpec("firsttab");
23. TabSpec sencondtab = tabHost.newTabSpec("sencondtab");
24. TabSpec thirdtab = tabHost.newTabSpec("thirdtab");
26. firsttab.setIndicator("first",
27. getResources().getDrawable(R.drawable.first)).setContent(
28. new Intent(this, first.class));
29. sencondtab.setIndicator("second",
30. getResources().getDrawable(R.drawable.second)).setContent(
31. new Intent(this, second.class));
32. thirdtab.setIndicator("third",
33. getResources().getDrawable(R.drawable.third)).setContent(
34. new Intent(this, third.class));
36. tabHost.addTab(firsttab);
37. tabHost.addTab(sencondtab);
38. tabHost.addTab(thirdtab);
40. if (Integer.valueOf(Build.VERSION.SDK) <= 7) {
41. try {
42. mBottomLeftStrip = tabWidget.getClass().getDeclaredField(
43. "mBottomLeftStrip");
44. mBottomRightStrip = tabWidget.getClass().getDeclaredField(
45. "mBottomRightStrip");
46. if (!mBottomLeftStrip.isAccessible()) {
47. mBottomLeftStrip.setAccessible(true);
48. }
49. if (!mBottomRightStrip.isAccessible()) {
50. mBottomRightStrip.setAccessible(true);
51. }
52. mBottomLeftStrip.set(tabWidget,
53. getResources().getDrawable(R.drawable.linee));
54. mBottomRightStrip.set(tabWidget, getResources()
55. .getDrawable(R.drawable.linee));
57. } catch (Exception e) {
58. e.printStackTrace();
59. }
60. } else {
61. try {
62. mBottomLeftStrip = tabWidget.getClass().getDeclaredField(
63. "mLeftStrip");
64. mBottomRightStrip = tabWidget.getClass().getDeclaredField(
65. "mRightStrip");
66. if (!mBottomLeftStrip.isAccessible()) {
67. mBottomLeftStrip.setAccessible(true);
68. }
69. if (!mBottomRightStrip.isAccessible()) {
70. mBottomRightStrip.setAccessible(true);
71. }
72. mBottomLeftStrip.set(tabWidget,
73. getResources().getDrawable(R.drawable.linee));
74. mBottomRightStrip.set(tabWidget, getResources()
75. .getDrawable(R.drawable.linee));
76. } catch (Exception e) {
77. e.printStackTrace();
78. }
79. }
81. for (int i = 0; i < tabWidget.getChildCount(); i++) {
83. View view = tabWidget.getChildAt(i);
84. if (tabHost.getCurrentTab() == i) {
85. view.setBackgroundDrawable(getResources().getDrawable(
86. R.drawable.focus));
87. } else {
88. view.setBackgroundDrawable(getResources().getDrawable(
89. R.drawable.unfocus));
90. }
91. }
93. tabHost.setOnTabChangedListener(new OnTabChangeListener() {
95. @Override
96. public void onTabChanged(String tabId) {
97. for (int i = 0; i < tabWidget.getChildCount(); i++) {
98. View view = tabWidget.getChildAt(i);
99. Toast.makeText(main.this, tabId, Toast.LENGTH_SHORT).show();
100. if (tabHost.getCurrentTab() == i) {
101. view.setBackgroundDrawable(getResources()
102. .getDrawable(R.drawable.focus));
103. } else {
104. view.setBackgroundDrawable(getResources()
105. .getDrawable(R.drawable.unfocus));
106. }
107. }
108. }
109. });
110. }
111. }
112. }