iOS UILabel无法调整文本大小

Question

我想实现ULLabelExtended以将UILabel的文本大小自动调整为设备宽度。但是当谈到执行时;它将图片显示为结果，而不是显示完整的子句：

完整条款：Ze aangeplant cocos rond hun nieuwe home。

是否有其他替代方法可以获得标签的文字大小与设备宽度成正比的关系或函数？

以下是我的代码

应用：

 CGRect screenRect = [[UIScreen mainScreen] bounds];
    CGFloat screenWidth = screenRect.size.width;
    CGFloat screenHeight = screenRect.size.height;

    [self.labelLong setWidthOfLabelWithMaxWidth:screenWidth];
    [self.labelShort setWidthOfLabelWithMaxWidth:screenWidth];

来源：

#import "UILabelExtended.h"



@implementation UILabelExtended
@synthesize selector,customDelegate, objectInfo;

- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    if(self.selector)
        if([self.customDelegate respondsToSelector:self.selector]) {
            [self.customDelegate performSelector:self.selector withObject:self];
            return;
        }
}

- (void)dealloc {

    self.customDelegate = nil;
    self.selector = NULL;
    self.objectInfo = nil;
}
@end


@implementation UILabel(UILabelCategory)

- (void)setHeightOfLabel {
    UILabel* label = self;

    //get the height of label content
    CGFloat height = [label.text sizeWithFont:label.font constrainedToSize:CGSizeMake(label.bounds.size.width, 99999) lineBreakMode:NSLineBreakByWordWrapping].height;
    //set the frame according to calculated height
    CGRect frame = label.frame;
    if([label.text length] > 0) {

        frame.size.height = height;
    }
    else {
        frame.size.height = 0;
    }
    label.frame = frame;
}


- (void)setWidthOfLabel {
    UILabel* label = self;

    //get the height of label content
    CGFloat width = [label.text sizeWithFont:label.font constrainedToSize:CGSizeMake(99999, label.bounds.size.height) lineBreakMode:NSLineBreakByWordWrapping].width;
    //set the frame according to calculated height
    CGRect frame = label.frame;
    if([label.text length] > 0) {

        frame.size.width = width+5;
    }
    else {
        frame.size.width = 0;
    }
    label.frame = frame;
}

- (void)setHeightOfLabelWithMaxHeight:(float)maxHeight {
    UILabel* label = self;

    //get the height of label content
    CGFloat height = [label.text sizeWithFont:label.font constrainedToSize:CGSizeMake(label.bounds.size.width, maxHeight) lineBreakMode:NSLineBreakByWordWrapping].height;
    //set the frame according to calculated height
    CGRect frame = label.frame;

    if([label.text length] > 0) {
        if (height > maxHeight) {
            frame.size.height = maxHeight;
        }
        else {
            frame.size.height = height;
        }

    }
    else {
        frame.size.height = 0;
    }
    label.frame = frame;
}

- (void)setWidthOfLabelWithMaxWidth:(float)maxWidth  {
    UILabel* label = self;

    //get the height of label content
    CGFloat width = [label.text sizeWithFont:label.font constrainedToSize:CGSizeMake(99999, label.bounds.size.height) lineBreakMode:NSLineBreakByWordWrapping].width;
    //set the frame according to calculated height
    CGRect frame = label.frame;
    if([label.text length] > 0) {

        if (width > maxWidth) {
            frame.size.width = maxWidth;
        }
        else {
            frame.size.width = width;
        }
    }
    else {
        frame.size.width = 0;
    }
    label.frame = frame;
}
@end