Showing Revision 1 created 10/20/2015 by sp11.

1. Title:
2. Description:

3. 790 0:01 - 0:04
   我們先做第一個
   上面寫TextView=new TextView
4. 4250 0:04 - 0:08
   then we pass context in as an input
   parameter to the constructor.
   然後通過內文輸入參數給建構者
5. 7861 0:08 - 0:12
   The problem with this line of code is
   that we're creating a new object but
   這行編碼的問題是我們在建立新目標
6. 11929 0:12 - 0:15
   we're not storing it
   properly in a variable.
   但沒有正確儲存在變數中
7. 15590 0:16 - 0:19
   We're saying that the variable
   should have data type TextView but
   我們是說變數
   應該有數據類型TextView
8. 18560 0:19 - 0:22
   we forget to give it a variable name.
   但忘了給變數名稱
9. 21570 0:22 - 0:24
   So the correct code would
   look something like this.
   因此正確的編碼會像這樣
10. 23910 0:24 - 0:28
    TextView followed by a variable name and
    then equals new TextView.
    變數名稱後面是TextView
    然後等於新TextView
11. 29130 0:29 - 0:31
    You can call the variable
    name something else but
    你可以稱變數名稱其他名稱
12. 31160 0:31 - 0:34
    we just chose to use textView
    with a lower case t.
    但我們使用textview，t小寫
13. 35420 0:35 - 0:38
    So in this case,
    the error was missing variable name.
    這個例子中
    錯誤是遺漏參數名稱
14. 38440 0:38 - 0:39
    Let's do the next one.
    我們做下一個
15. 39250 0:39 - 0:43
    It says, image view img = new ImageView.
    上面寫image view img=new ImageView
16. 43350 0:43 - 0:48
    The problem here is that this
    is not a valid object data type.
    這裡的問題是無有效的目標數據類型
17. 47865 0:48 - 0:52
    Android defines a class called ImageView
    with a capital I and a capital V and
    安卓定義ImageView
    I跟V大寫
18. 52320 0:52 - 0:55
    it's squished together into one word.
    並合成一個字
19. 54600 0:55 - 0:57
    A valid class name can't
    have any spaces in it.
    有效的名稱不能有空格
20. 57780 0:58 - 0:59
    The variable name looks okay, and
    變數名稱看起來可以
21. 59050 0:59 - 1:02
    then creating the new image
    view looks okay as well.
    建立新的影像檢視看起來也可以
22. 61740 1:02 - 1:05
    So the only error was that it
    had an incorrect class name.
    因此錯誤是錯誤的等級名稱
23. 64989 1:05 - 1:08
    In the third statement, we're trying
    to create a new toggle button.
    在第三行，我們要建立新的按鍵
24. 67790 1:08 - 1:12
    It says ToggleButton button
    = create ToggleButton.
    上面寫ToggleButton button
    = create ToggleButton.
25. 71640 1:12 - 1:14
    We're calling the ToggleButton
    class here, so
    這邊我們稱為ToggleButton等級
26. 73890 1:14 - 1:18
    we need to use the Java keyword new,
    not create.
    我們要用爪哇關鍵字新
    不是建立
27. 78040 1:18 - 1:19
    And this is the correct code.
    這是正確的編碼
28. 79020 1:19 - 1:22
    It says ToggleButton
    button = new ToggleButton.
    上面寫ToggleButton
    button = new ToggleButton.
29. 82145 1:22 - 1:26
    The problem here was not
    using the Java keyword new.
    這裡的問題是
    沒有使用爪哇關鍵字新
30. 85910 1:26 - 1:30
    New is the keyword that indicates that
    we're trying to create a new object.
    新是指建立新目標的關鍵字
31. 90450 1:30 - 1:33
    In the fourth statement,
    we're trying to create a new toast.
    在第四行
    我們要建立新的吐司
32. 92892 1:33 - 1:36
    You could've Google searched for
    how to create a new toast and
    你可以谷哥搜尋
    如何建立新吐司
33. 95620 1:36 - 1:37
    then compared it with this code here.
    然後與這裡的編碼比較
34. 97450 1:37 - 1:41
    The problem here is that toast needs
    to be spelled with a capital T,
    這裡的問題是吐司的T要大寫
35. 100700 1:41 - 1:43
    because this is a class name for Toast.
    因為那是Toast的等級名稱
36. 103320 1:43 - 1:47
    This is using a factory method
    like we talked about earlier.
    這是使用我們稍早說明的工廠法
37. 106670 1:47 - 1:50
    This creates a new toast object and
    then it gets stored in this variable.
    建立新的吐司目標
    然後儲存在變數裡
38. 110400 1:50 - 1:53
    So the error here was just
    an incorrect class name.
    所以錯誤是不正確的等級名稱
39. 113360 1:53 - 1:56
    So now that we know how to create
    objects, how do we use these objects?
    現在我們知道如何建立目標
    我們要如何使用這些目標？