Ios 如何优化用VFL autolayout编写的代码
我有一个Ios 如何优化用VFL autolayout编写的代码,ios,objective-c,autolayout,visual-format-language,Ios,Objective C,Autolayout,Visual Format Language,我有一个ui视图,我在其中创建ui标签,而不使用循环,并使用VFL。 它工作得很好,但代码可读性很差。即使我也不知道如何使用for循环来创建这些标签。 我必须将高度设置为30,这是我不想要的。我希望它自动增长。 此外,我正在将subcentviewheight常量设置为硬编码constantTheightsubcentview.constant=250 我不想使用视图。 这是我尝试过的代码: -(void)createProfileView{ if (ProfileView == nil) {
ui视图
,我在其中创建ui标签
,而不使用循环
,并使用VFL
。
它工作得很好,但代码可读性很差。即使我也不知道如何使用for
循环来创建这些标签。
我必须将高度设置为30
,这是我不想要的。我希望它自动增长。
此外,我正在将subcentview
height
常量设置为硬编码constantTheightsubcentview.constant=250代码>
我不想使用视图。
这是我尝试过的代码:
-(void)createProfileView{
if (ProfileView == nil) {
ProfileView = [[UIView alloc] init];
[ProfileView setTranslatesAutoresizingMaskIntoConstraints:NO];
[ProfileView setBackgroundColor:[UIColor yellowColor]];
[subContentView addSubview:ProfileView];
views[@"ProfileView"] = ProfileView;
NSArray* constraints;
NSString* format;
format = @"|[ProfileView]|";
constraints = [NSLayoutConstraint constraintsWithVisualFormat:format options:0 metrics:nil views:views];
[subContentView addConstraints:constraints];
format = @"V:|-50-[ProfileView]|";
constraints = [NSLayoutConstraint constraintsWithVisualFormat:format options:0 metrics:nil views:views];
[subContentView addConstraints:constraints];
//create labels
//homeTown
UILabel *lblHomeTown = [self getLabel];
[lblHomeTown setBackgroundColor:[UIColor greenColor]];
[lblHomeTown setText:@"Hometown:"];
[ProfileView addSubview:lblHomeTown];
views[@"lblHomeTown"] = lblHomeTown;
UILabel *lblHomeTownDetail = [self getLabel];
[lblHomeTownDetail setBackgroundColor:[UIColor grayColor]];
[lblHomeTownDetail setText:self.player.homeTown];
[ProfileView addSubview:lblHomeTownDetail];
views[@"lblHomeTownDetail"] = lblHomeTownDetail;
format = @"|-10-[lblHomeTown]-2-[lblHomeTownDetail]";
constraints = [NSLayoutConstraint constraintsWithVisualFormat:format options:0 metrics:nil views:views];
[ProfileView addConstraints:constraints];
format = @"V:[lblHomeTown(30)]";
constraints = [NSLayoutConstraint constraintsWithVisualFormat:format options:0 metrics:nil views:views];
[ProfileView addConstraints:constraints];
format = @"V:|[lblHomeTownDetail(30)]";
constraints = [NSLayoutConstraint constraintsWithVisualFormat:format options:0 metrics:nil views:views];
[ProfileView addConstraints:constraints];
//hometown
//highSchool
//create labels
UILabel *lblHighSchool = [self getLabel];
[lblHighSchool setBackgroundColor:[UIColor magentaColor]];
[lblHighSchool setText:@"High School:"];
[ProfileView addSubview:lblHighSchool];
views[@"lblHighSchool"] = lblHighSchool;
UILabel *lblHighSchoolDetail = [self getLabel];
[lblHighSchoolDetail setBackgroundColor:[UIColor redColor]];
[lblHighSchoolDetail setText:self.player.highSchool];
[ProfileView addSubview:lblHighSchoolDetail];
views[@"lblHighSchoolDetail"] = lblHighSchoolDetail;
format = @"|-10-[lblHighSchool]-2-[lblHighSchoolDetail]";
constraints = [NSLayoutConstraint constraintsWithVisualFormat:format options:0 metrics:nil views:views];
[ProfileView addConstraints:constraints];
format = @"V:|[lblHomeTown(30)]-10-[lblHighSchool(30)]";
constraints = [NSLayoutConstraint constraintsWithVisualFormat:format options:0 metrics:nil views:views];
[ProfileView addConstraints:constraints];
format = @"V:|[lblHomeTown(30)]-10-[lblHighSchoolDetail(30)]";
constraints = [NSLayoutConstraint constraintsWithVisualFormat:format options:0 metrics:nil views:views];
[ProfileView addConstraints:constraints];
//highschool
//experience
UILabel *lblExperience = [self getLabel];
[lblExperience setText:@"Experience:"];
[ProfileView addSubview:lblExperience];
views[@"lblExperience"] = lblExperience;
UILabel *lblExperienceDetail = [self getLabel];
[lblExperienceDetail setText:self.player.experience];
[ProfileView addSubview:lblExperienceDetail];
views[@"lblExperienceDetail"] = lblExperienceDetail;
format = @"|-10-[lblExperience]-2-[lblExperienceDetail]";
constraints = [NSLayoutConstraint constraintsWithVisualFormat:format options:0 metrics:nil views:views];
[ProfileView addConstraints:constraints];
format = @"V:[lblHighSchool(30)]-10-[lblExperience(30)]";
constraints = [NSLayoutConstraint constraintsWithVisualFormat:format options:0 metrics:nil views:views];
[ProfileView addConstraints:constraints];
format = @"V:[lblHighSchool(30)]-10-[lblExperienceDetail(30)]";
constraints = [NSLayoutConstraint constraintsWithVisualFormat:format options:0 metrics:nil views:views];
[ProfileView addConstraints:constraints];
//experience
//description
UILabel *lblDescription = [self getLabel];
[lblDescription setText:self.player.playerDescription];
[ProfileView addSubview:lblDescription];
views[@"lblDescription"] = lblDescription;
format = @"|-10-[lblDescription]";
constraints = [NSLayoutConstraint constraintsWithVisualFormat:format options:0 metrics:nil views:views];
[ProfileView addConstraints:constraints];
format = @"V:[lblExperience(30)]-10-[lblDescription]";
constraints = [NSLayoutConstraint constraintsWithVisualFormat:format options:0 metrics:nil views:views];
[ProfileView addConstraints:constraints];
//description
}
constantHeightSubContentView.constant = 250;
[subContentView bringSubviewToFront:ProfileView];
}
}令人惊讶的答案,唯一的问题是您必须使用VFL来指定乘数值,而不是如答案中所示的界面生成器。但是,一旦您理解了所使用的逻辑,这应该很容易。令人惊讶的答案,唯一的问题是您必须使用VFL来指定乘数值,而不是如答案中所示的界面生成器。但是,一旦您理解了所使用的逻辑,这应该很容易。您考虑过将UIView子类化吗?这将清理您的代码,并允许您更好地构建代码。是的,这是我目前正在做的第一件事。我还创建了一个行视图(UIView子类,它将有两个水平分隔的标签)。然后我将使用for循环垂直绘制3/n行(行视图)。我的问题仍然是,如何使用for循环和VFL或最后优先级的“constraintWithItem”方法垂直创建三个或n个视图?您考虑过将UIView子类化吗?这将清理您的代码,并允许您更好地构建代码。是的,这是我目前正在做的第一件事。我还创建了一个行视图(UIView子类,它将有两个水平分隔的标签)。然后我将使用for循环垂直绘制3/n行(行视图)。我的问题仍然是,如何使用for循环和VFL或最后优先级的“constraintWithItem”方式垂直创建三个或n个视图
-(UILabel *)getLabel{
UILabel *lbl = [[UILabel alloc] init];
[lbl setTranslatesAutoresizingMaskIntoConstraints:NO];
[lbl setBackgroundColor:[UIColor clearColor]];
[lbl setNumberOfLines:0];
[lbl setTextColor:[UIColor blackColor]];
[lbl setFont:[UIFont fontWithName:@"AppleSDGothicNeo-Regular" size:13.0f]];
lbl.lineBreakMode = NSLineBreakByWordWrapping;
return lbl;