问题描述

连接UISlider到fontSize的实现方法

不知道应该怎么实现连接UISlider到fontSize （IBAction)font1和(IBAction)font2。

.h

@interface ViewController : UIViewController{    IBOutlet UISlider* fontSizeSlider;    IBOutlet UITextView* textView;}-(IBAction)sliderValueChanged:(UISlider*)sender;-(IBAction)font1;-(IBAction)font2;@end

.m

-(IBAction)sliderValueChanged:(UISlider*)sender{   textView.font = [UIFont fontWithName:@""??????"" size:sender.value];}-(IBAction)font1{   textView.font = [UIFont fontWithName:@""Heiti TC"" size:18];}-(IBAction)font2{    textView.font = [UIFont fontWithName:@""Marker Felt"" size:18];}-(IBAction)font1; //[UIButton]-(IBAction)font1; //[UIButton]-(IBAction)sliderValueChanged; //[UISlider]

解决方案

我理解的你是要从两种字体中选择，这样可以把字体放在一个NSString中实现，然后
.h

@interface ViewController : UIViewController{    IBOutlet UISlider* fontSizeSlider;    IBOutlet UITextView* textView;    NSString *currentFont;}-(IBAction)sliderValueChanged:(UISlider*)sender;-(IBAction)font1;-(IBAction)font2;@end

.m

-(void)viewDidLoad {    [super viewDidLoad];    currentFont = @""Heiti TC""; //Or whatever your default font is    textView.font = [UIFont fontWithName:currentFont size:sender.value];}-(IBAction)sliderValueChanged:(UISlider*)sender{   textView.font = [UIFont fontWithName:currentFont size:sender.value];}-(IBAction)font1{   currentFont = @""Heiti TC"";   textView.font = [UIFont fontWithName:currentFont size:fontSizeSlider.value];}-(IBAction)font2{   currentFont = @""Marker Felt"";   textView.font = [UIFont fontWithName:currentFont size:fontSizeSlider.value];}