Android開發教程：頁面切換測試

軟件平台:Windows 7 + Eclipse + SDK

設計思路:

兩個頁面:mian和ok,每個頁面上有一個按鍵,點擊則可以互相切換

源代碼:

main.xml源代碼:

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout xmlns:Android="http://schemas.android.com/apk/res/android"
3. android:orientation="vertical"
4. android:layout_width="fill_parent"
5. android:layout_height="fill_parent"
6. >
7. <TextView
8. android:layout_width="fill_parent"
9. android:layout_height="wrap_content"
10. android:text="@string/hello"
11. />
12. <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="下一頁面 "></Button>
13. </LinearLayout>

ok.xml源代碼:

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout
3. xmlns:android="http://schemas.android.com/apk/res/android"
4. android:layout_width="match_parent"
5. android:layout_height="match_parent">
6. <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="上一頁面 " android:id="@+id/button1"></Button>
7. </LinearLayout>

makechoice源代碼:

1. package com.makechoice;
3. import android.app.Activity;
4. import android.os.Bundle;
5. import android.view.View;
6. import android.widget.Button;
8. public class makechoice extends Activity
9. {
10. /** Called when the activity is first created. */
11. @Override
12. public void onCreate(Bundle savedInstanceState)
13. {
14. super.onCreate(savedInstanceState);
15. setContentView(R.layout.main);
16. Button btn = (Button)findViewById(R.id.button1);
17. btn.setOnClickListener(new Button.OnClickListener()
18. {
19. @Override
20. public void onClick(View v)
21. {
22. jump2ok();
23. }
24. });
25. }
27. //跳到ok頁面
28. public void jump2ok()
29. {
30. setContentView(R.layout.ok);
31. //當有按鍵按下跳到main頁面
32. Button btn = (Button)findViewById(R.id.button1);
33. btn.setOnClickListener(new Button.OnClickListener()
34. {
35. @Override
36. public void onClick(View v)
37. {
38. jump2main();
39. }
40. });
41. }
43. //跳到main頁面
44. public void jump2main()
45. {
46. setContentView(R.layout.main);
47. //當有按鍵按下跳到ok頁面
48. Button btn = (Button)findViewById(R.id.button1);
49. btn.setOnClickListener(new Button.OnClickListener()
50. {
51. @Override
52. public void onClick(View v)
53. {
54. jump2ok();
55. }
56. });
57. }
58. }

運行效果圖:

注意:

類R中存放的ID號為當前頁面的ID號,所以findViewById函數捕獲的控件也為當前頁面的控件