Android之在Layout中嵌入Activity

有些復雜的布局的實現，這裡可以提供一個思路，在布局中嵌入自己的Activity，直接貼源碼：

1.ActivityInLayoutDemoActivity.java:

1. package com.zhf.ActivityInLayoutDemo;
3. import java.util.HashMap;
4. import java.util.Map;
5. import Android.app.ActivityGroup;
6. import android.content.Intent;
7. import android.os.Bundle;
8. import android.view.View;
9. import android.view.ViewGroup;
10. import android.view.Window;
11. import android.view.View.OnClickListener;
12. import android.widget.Button;
13. import android.widget.LinearLayout;
14. /**
15. * 布局中嵌入Activity例子
16. * @author administrator
17. *
18. */
19. public class ActivityInLayoutDemoActivity extends ActivityGroup {
20. private LinearLayout container;
21. private Button click1;
22. private Button click2;
23. /**
24. * 子View管理
25. */
26. private Map<String, View> childViews = new HashMap<String, View>();
27. private String currentTag;
29. @Override
30. public void onCreate(Bundle savedInstanceState) {
31. super.onCreate(savedInstanceState);
32. setContentView(R.layout.main);
33. container = (LinearLayout) findViewById(R.id.container);
34. click1 = (Button) findViewById(R.id.click1);
35. click2 = (Button) findViewById(R.id.click2);
36. click1.setOnClickListener(new OnClickListener() {
38. @Override
39. public void onClick(View arg0) {
40. startActivity("activity1", new Intent(ActivityInLayoutDemoActivity.this, Activity1.class));
41. }
42. });
44. click2.setOnClickListener(new OnClickListener() {
46. @Override
47. public void onClick(View arg0) {
48. startActivity("activity2", new Intent(ActivityInLayoutDemoActivity.this, Activity2.class));
49. }
50. });
51. }
53. /**
54. * 加載子Activity
55. *
56. * @param tag
57. * @param intent
58. */
59. private void startActivity(String tag, Intent intent) {
60. if (currentTag != null) {
61. View currentView = childViews.get(currentTag);
62. if (currentView != null)
63. currentView.setVisibility(View.GONE);
64. }
65. currentTag = tag;
66. View originView = childViews.get(tag);
67. final Window window = getLocalActivityManager().startActivity(tag,
68. intent);
69. final View decorView = window.getDecorView();
70. if (decorView != originView && originView != null) {
71. if (originView.getParent() != null)
72. ((ViewGroup) originView.getParent()).removeView(originView);
73. }
74. childViews.put(tag, decorView);
75. if (decorView != null) {
76. decorView.setVisibility(View.VISIBLE);
77. decorView.setFocusableInTouchMode(true);
78. ((ViewGroup) decorView)
79. .setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
80. if (decorView.getParent() == null) {
81. container.addView(decorView,
82. new LinearLayout.LayoutParams(
83. ViewGroup.LayoutParams.FILL_PARENT,
84. ViewGroup.LayoutParams.FILL_PARENT));
85. }
86. decorView.requestFocus();
87. }
88. }
89. }

2.效果圖