改变Font字体

1.先用下面代码查看字体种类

- (void)enumerateFonts{
    
    NSArray *familyNames =[[NSArray alloc]initWithArray:[UIFont familyNames]];
    NSArray *fontNames;
    NSInteger indFamily, indFont;
    NSLog(@"[familyNames count]===%lu",(unsigned long)[familyNames count]);
    for(indFamily=0;indFamily<[familyNames count];++indFamily)
    {
        NSLog(@"Family name: %@", [familyNames objectAtIndex:indFamily]);
        fontNames =[[NSArray alloc]initWithArray:[UIFont fontNamesForFamilyName:[familyNames objectAtIndex:indFamily]]];
        
        for(indFont=0; indFont<[fontNames count]; ++indFont)
            
        {
            NSLog(@"Font name: %@",[fontNames objectAtIndex:indFont]);
        }
    }
}

2.设置Font类型

lab1.font = [UIFont fontWithName:@"PingFang SC" size:20];

或者

lab1.font = [UIFont fontWithName:@"PingFang SC-Light" size:20];