Android_ViewStub

主窗体xml:

[html] view
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1. <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
2. xmlns:tools="http://schemas.android.com/tools"
3. android:layout_width="match_parent"
4. android:layout_height="match_parent"
5. tools:context=".MainActivity" >
6. <com.yzh.lockpri2.widget.ScaledImageView
7. android:id="@+id/imageBG"
8. android:layout_width="match_parent"
9. android:layout_height="match_parent"/>
10. <FrameLayout
11. android:layout_width="match_parent"
12. android:layout_height="100dp"
13. android:paddingBottom="5dp">
14. <com.yzh.lockpri2.widget.BluredImageView
15. android:id="@+id/headerBg"
16. android:layout_width="match_parent"
17. android:layout_height="match_parent"/>
18. <TextView
19. android:layout_width="wrap_content"
20. android:layout_height="wrap_content"
21. android:text="@string/welcome_title"
22. android:layout_gravity="center"
23. style="@style/welcome_bold_info_font"
24. />
25. <TextView
26. android:layout_width="wrap_content"
27. android:layout_height="wrap_content"
28. android:text="@string/welcome_info"
29. style="@style/welcome_little_info_font"
30. android:layout_gravity="center_horizontal|bottom"
31. android:layout_marginBottom="3dp"/>
32. </FrameLayout>
33. <ViewStub
34. android:id="@+id/keyboardStub"
35. android:layout_width="match_parent"
36. android:layout_height="match_parent"
37. android:layout_gravity="bottom"
38. android:inflatedId="@+id/keyboard"
39. layout="@layout/keyboard"
40. />
41. </FrameLayout>

keyboard是另外一个xml中的布局, 在视图中能正常显示.

然后在代码中:

[java] view
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1. stub = (ViewStub)findViewById(R.id.keyboardStub);
2. stub.inflate();

程序执行到 stub.inflate(); 报错 "ViewStub must have a valid layoutResource". 检查了半天,

才发现是在主xml中设置时使用了<include>标签的用法:

[html] view
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1. layout="@layout/keyboard"

正确的应该是:

[html] view
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1. android:layout="@layout/keyboard"

修改后, 执行正常!