从 xml 创建 gui 时出现问题 ->奇怪的 CPButton 行为
你好,
我是 Objective-j 和卡布奇诺的新手,刚刚尝试创建一个 小型应用程序,从 xml 文件动态创建 gui。
不幸的是它只能部分起作用。好像是按钮 地区秩序混乱。这意味着,如果 我点击按钮旁边...
请帮助我。我不明白..
- (void)applicationDidFinishLaunching:(CPNotification)aNotification
{
mControlList = [CPArray alloc];
theWindow = [[CPWindow alloc] initWithContentRect:CGRectMakeZero()
styleMask:CPBorderlessBridgeWindowMask],
contentView = [theWindow contentView];
[contentView setFrame:[[contentView superview] bounds]];
[contentView setAutoresizingMask:CPViewWidthSizable |
CPViewHeightSizable];
// Loadxmlfile
var xhttp;
if (window.XMLHttpRequest)
{
xhttp=new XMLHttpRequest()
}
else
{
xhttp=new ActiveXObject("Microsoft.XMLHTTP")
}
xhttp.open("GET","test.xml",false);
xhttp.send("");
xmlDoc = xhttp.responseXML;
//Get controls nodeand iterate through all controls
var node = xmlDoc.getElementsByTagName("controls")[0];
for (var i=0; i<node.childNodes.length; i++) {
if(node.childNodes[i].nodeName=="button"){
var item = node.childNodes[i];
var name = item.attributes["name"].nodeValue;
var text = item.getElementsByTagName("text")
[0].childNodes[0].nodeValue;
var x= item.getElementsByTagName("rect")
[0].attributes["x"].nodeValue;
var y= item.getElementsByTagName("rect")
[0].attributes["y"].nodeValue;
var width= item.getElementsByTagName("rect")
[0].attributes["width"].nodeValue;
var height= item.getElementsByTagName("rect")
[0].attributes["height"].nodeValue;
var b = [[Button alloc] InitWithParent:contentView Text:text X:x
Y:y Width:width Height:height];
[mControlList addObject:b];
}
}
[theWindow orderFront:self];
}
@implementation Button : CPObject
{
CPButton _button;
}
- (Button)InitWithParent:(CPView)contentView Text:(CPString)text X:
(int)x Y:(int)y Width:(int)width Height:(int)height
{
_button = [[CPButton alloc] initWithFrame:
CGRectMake(x,y,width,height)];
[_button setTitle:text];
[_button setTarget:self];
[_button setAction:@selector(cmdNext_onClick:)];
[contentView addSubview:_button];
return self;
}
- (void)cmdNext_onClick:(id)sender
{
}
@end
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卡布奇诺免费为您提供大部分功能。
您可以使用 CPURLConnection 加载文件。
还有 Atlas (或 Interface Builder 和 nib2cib)将自动为您创建 cib 文件,Cappuccino 本身已经知道如何从 cib 文件构建其 UI。
如果您确实想实现自己的系统来执行此操作,您能否提供您尝试加载的实际 XML?还可以尝试在不使用 XML 的情况下加载按钮。例如:
+ buttonWithTitle:
将自动在初始化的按钮上调用- sizeToFit
,因此您只需将其添加到 contentView 中即可,并且它应该以适当的大小可见。Cappuccino gives you most of this functionality for free.
You can load files by using a CPURLConnection.
Also Atlas (or Interface Builder and nib2cib) will automatically create cib files for you, Cappuccino itself already knows how to build up it's UI from a cib files.
If you really want to implement your own system to do this, could you please provide the actual XML you are trying to load? Also try loading the button without using the XML. For example:
+ buttonWithTitle:
will automatically call- sizeToFit
on the initialized button, so you can just add it to your contentView and it should be visible with the appropriate size.