如何将SDK示例项目复制到工作区？

Question

我的目标是复制NotePad示例项目,这样如果我修改源文件以便通过实验学习,原始示例文件将不会受到影响.这个目标背后的理性在@Neutrino的这篇文章的子弹1-2-3中得到了很好的解释.

根据@ Neutrino的帖子,我执行了以下步骤:

步骤1:将示例代码复制到临时位置(工作区目录之外):

 1. Close Eclipse.
 2. Copy the entire sample folder
    **NotePad** from C:\android-sdk-windows\samples\android-7
    to C:\Users\androideve\Documents\NotePad

步骤2.从副本导入到工作区:

   1. Start Eclipse
   2. File > New > Project > Android Project [Next]
      > Create project from existing **source**: C:\Users\androideve\Documents\NotePad
   3. Delete project from Package Explorer (without deleting its files from disk!)
   4. File > Import... 
      > General > Existing Projects into Workspace [Next]
        > Browse: C:\Users\androideve\Documents\NotePad
        > Check "Copy projects into workspace" [Finish]
   5. Delete entire folder C:\Users\androideve\Documents\NotePad from disk.

这导致项目创建,但它带有21个错误,没有任何线索导致它们的原因(记住,我是一个Android新手,我没有编写NotePad程序):

Description Resource    Path    Location    Type
Error generating final archive: java.io.FileNotFoundException: C:\sb\workspace\NotesList\bin\resources.ap_ does not exist   NotesList       Unknown Android Packaging Problem
error: Error: String types not allowed (at 'layout_height' with value 'match_parent').  note_editor.xml /NotesList/res/layout   line 17 Android AAPT Problem
error: Error: String types not allowed (at 'layout_width' with value 'match_parent').   note_editor.xml /NotesList/res/layout   line 17 Android AAPT Problem
error: Error: String types not allowed (at 'layout_width' with value 'match_parent').   noteslist_item.xml  /NotesList/res/layout   line 17 Android AAPT Problem
R cannot be resolved to a variable  NoteEditor.java /NotesList/src/com/example/android/notepad  line 148    Java Problem
R cannot be resolved to a variable  NoteEditor.java /NotesList/src/com/example/android/notepad  line 151    Java Problem
R cannot be resolved to a variable  NoteEditor.java /NotesList/src/com/example/android/notepad  line 175    Java Problem
R cannot be resolved to a variable  NoteEditor.java /NotesList/src/com/example/android/notepad  line 177    Java Problem
R cannot be resolved to a variable  NoteEditor.java /NotesList/src/com/example/android/notepad  line 194    Java Problem
R cannot be resolved to a variable  NoteEditor.java /NotesList/src/com/example/android/notepad  line 195    Java Problem
R cannot be resolved to a variable  NoteEditor.java /NotesList/src/com/example/android/notepad  line 265    Java Problem
R cannot be resolved to a variable  NoteEditor.java /NotesList/src/com/example/android/notepad  line 269    Java Problem
R cannot be resolved to a variable  NoteEditor.java /NotesList/src/com/example/android/notepad  line 276    Java Problem
R cannot be resolved to a variable  NotesList.java  /NotesList/src/com/example/android/notepad  line 83 Java Problem
R cannot be resolved to a variable  NotesList.java  /NotesList/src/com/example/android/notepad  line 94 Java Problem
R cannot be resolved to a variable  NotesList.java  /NotesList/src/com/example/android/notepad  line 177    Java Problem
R cannot be resolved to a variable  NotesLiveFolder.java    /NotesList/src/com/example/android/notepad  line 48 Java Problem
R cannot be resolved to a variable  NotesLiveFolder.java    /NotesList/src/com/example/android/notepad  line 51 Java Problem
R cannot be resolved to a variable  TitleEditor.java    /NotesList/src/com/example/android/notepad  line 71 Java Problem
R cannot be resolved to a variable  TitleEditor.java    /NotesList/src/com/example/android/notepad  line 80 Java Problem
R cannot be resolved to a variable  TitleEditor.java    /NotesList/src/com/example/android/notepad  line 83 Java Problem

我做错了什么,我需要做什么来制作和运行这个NotePad示例的副本？

Answer 1

好吧,我想我到了那里(注意原始步骤和以下步骤之间的细微差别):

步骤1:将示例代码复制到临时位置(工作区目录之外):

 1. Close Eclipse.
 2. Copy the entire sample folder
    **NotePad** from C:\android-sdk-windows\samples\android-8
    to C:\Users\androideve\Documents\NotePad

步骤2.从副本导入到工作区:

   1. Start Eclipse
   2. File > New > Project > Android Project [Next]
      > Create project from existing **source**: C:\Users\androideve\Documents\NotePad
      > Build Target: **Uncheck** Android 1.5. **Check** Android 2.2. [Finish]
   3. Delete project from Package Explorer (without deleting its files from disk!)
   4. File > Import... 
      > General > Existing Projects into Workspace [Next]
        > Browse: C:\Users\androideve\Documents\NotePad
        > Check "Copy projects into workspace" [Finish]
   5. Delete entire folder C:\Users\androideve\Documents\NotePad from disk.

现在,项目像以前一样创建,但是我只有1个警告,而不是21个错误:

Description Resource    Path    Location    Type
Attribute minSdkVersion (3) is lower than the project target API level (8)  AndroidManifest.xml /NotesList  line 1  Android ADT Problem

我在控制台上也有两条红色消息:

[2011-02-10 12:45:50 - com.android.ide.eclipse.adt.internal.project.AndroidManifestHelper] Unable to read C:\android-sdk-windows\AndroidManifest.xml: java.io.FileNotFoundException: C:\android-sdk-windows\AndroidManifest.xml (The system cannot find the file specified)
[2011-02-10 12:45:50 - com.android.ide.eclipse.adt.internal.project.AndroidManifestHelper] Unable to read C:\android-sdk-windows\AndroidManifest.xml: java.io.FileNotFoundException: C:\android-sdk-windows\AndroidManifest.xml (The system cannot find the file specified)

的确如此:C:\ android-sdk-windows中没有AndroidManifest.xml,但NoteList目录中有一个.为什么抱怨这个？为什么它在C:\ android-sdk-windows中查找？

无论如何,在创建启动配置之后,复制的逐字样本项目继续在模拟器上运行而没有任何问题(现在我终于可以继续学习它的编程方面).

总之,问题的根源是我使用的是Android 7样本(而不是Android 8),并且我继续使用构建目标1.5(而不是2.2).

一切都很好.:)