我有一个小面板的简单代码:
FAILURE: Build failed with an exception.
* Where:
Script
'C:\Users\pini\Desktop\Drivercheckcall\platforms\android\phonegap-plugin-push\DriverCheckCall-push.gradle' line:
38
* What went wrong:
A problem occurred evaluating root project 'android'.
> Failed to apply plugin [class 'com.google.gms.googleservices.GoogleServicesPlugin']
> For input string: "+"
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
BUILD FAILED
Total time: 23.062 secs
Error: cmd: Command failed with exit code 1 Error output:
FAILURE: Build failed with an exception.
* Where:
Script
'C:\Users\pini\Desktop\Drivercheckcall\platforms\android\phonegap-plugin-push\DriverCheckCall-push.gradle' line:
38
* What went wrong:
A problem occurred evaluating root project 'android'.
> Failed to apply plugin [class 'com.google.gms.googleservices.GoogleServicesPlugin']
> For input string: "+"
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
但是我必须把它们中的两个放在一个窗口上。我想创建单个对象类并从中创建2个对象。我看到可以按如下方式创建对象:
view [
t: text "label"
f: field
button "Click here" [t/text: f/text] ]
但我得到以下错误:
obj: object [
view [
t: text "label"
f: field
button "Click here" [t/text: f/text] ] ]
view [
obj
obj ]
如何做到这一点?谢谢你的帮助。
修改:我尝试使用*** Script Error: VID - invalid syntax at: [obj obj]
*** Where: do
*** Stack: view layout cause-error
,但只能使用do
:
does
答案 0 :(得分:2)
我猜你要找的是样式而不是对象才能创建布局。到目前为止,Red还没有官方的样式化功能。但您可以像这样动态创建布局
view repeat i 2 [
tname: to-word rejoin ['t i]
fname: to-word rejoin ['f i]
append v: [] compose/deep [
(to-set-word tname) text "label"
(to-set-word fname) field
button "click here" [
(to-set-path compose [(tname) text])
(to-path compose [(fname) text])
]
]
]
您可以多次将预定义的单词块附加到要查看的块中,您将获得重复的元素。
txt_btn: [
t: text "label"
f: field
button "Click here" [t/text: f/text]
]
view append append [] txt_btn txt_btn
当您在块中引用命名元素时,会出现问题。但是一个词不能指向重复元素的多个元素,因此在完整解决方案中使用compose来创建唯一的名称。
也许Red中有一个错误,因为我认为compose/deep
也会在内部做括号而不需要更多的编写 -
答案 1 :(得分:2)
要使用对象而不是 VID 方言,请将view
替换为layout
:
lay: layout [
t: text "label"
f: field
button "Click here" [t/text: f/text]
]
view lay
然后,您可以像检查任何其他对象一样进行检查:?? lay
。
例如,要使用lay
访问pane
的内容:
>> ? lay/pane/1
但是,更有用的功能可能是dump-face
:
>> dump-face lay
Type: window Style: none Offset: 833x548 Size: 270x45 Text: "Red: untitled"
Type: text Style: text Offset: 10x10 Size: 80x24 Text: "label"
Type: field Style: field Offset: 100x10 Size: 80x24 Text: none
Type: button Style: button Offset: 190x9 Size: 70x25 Text: "Click here"
== make object! [
type: 'window
offset: 833x548
...
panel
对于将对象组合在一起非常有用:
>> dump-face blay: layout [p: panel button "hi"]
Type: window Style: none Offset: none Size: 292x220 Text: none
Type: panel Style: panel Offset: 10x10 Size: 200x200 Text: none
Type: button Style: button Offset: 220x9 Size: 62x25 Text: "hi"
== make object! [
type: 'window
offset: none
...
但使用compose
的 VID 方言可能更容易首先构建内容。
答案 2 :(得分:1)
我想创建单个对象类并从中创建2个对象。
Red中没有对象 class 系统,因此在尝试更复杂的GUI构造之前,您应该首先尝试掌握基本的Red概念。 Red是一种非常灵活的面向数据的语言,因此您可以利用它,例如,构建参数化块模板,并组装它们以形成正确的VID代码块。这是一个例子:
make-row: func [label [string!] but-label [string!]][
compose [
t: text (label)
f: field
b: button (but-label) [face/extra/1/text: face/extra/2/text]
do [b/extra: reduce [t f]]
]
]
view compose [
(make-row "label" "Click") return
(make-row "label2" "Click2")
]
理解面部树(类似于HTML DOM,更简单),是掌握Red的GUI系统的重要部分。由于目前还没有太多文档(您可以从http://docs.red-lang.org开始),欢迎您在red/help Gitter房间提出实时问题。