18.自定义键盘 toolbar的barTintColor UIBarButtonItem的使用 datePick使用

UIDatePicker *dateP=[[UIDatePicker alloc]init];
dateP.datePickerMode=UIDatePickerModeDate;
//设置语言为中文（系统语言为中文时有效）
dateP.locale=[[NSLocale alloc]initWithLocaleIdentifier:@"zh_CN"];
dateP.frame=CGRectMake(0, 44, 320, 162);
//监听datePicker的选中
[dateP addTarget:self action:@selector(test:) forControlEvents:UIControlEventValueChanged];

UIToolbar *toolBar=[[UIToolbar alloc]init];
toolBar.frame=CGRectMake(0, 0, 320, 44);
UIBarButtonItem *item=[[UIBarButtonItem alloc]initWithTitle:@"上一个" style:UIBarButtonItemStylePlain target:self action:@selector(item1)];
UIBarButtonItem *item1=[[UIBarButtonItem alloc]initWithTitle:@"下一个" style:UIBarButtonItemStylePlain target:self action:@selector(item1)];
UIBarButtonItem *item2=[[UIBarButtonItem alloc]initWithTitle:@"完成" style:UIBarButtonItemStylePlain target:self action:@selector(item1)];
//这个方法可以获得可以拉伸的UIBarButtonItem
UIBarButtonItem *item3=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:@selector(item1)];
//会根据数组中元素顺序进行在toobar上显示
NSArray *items=@[item,item1,item3,item2];
toolBar.items=items;
//barTintColor设置背景更为准确
toolBar.barTintColor=[UIColor redColor];

//进行显示的datePickerView
self.textFiled.inputView=dateP;
//辅助的toobar
self.textFiled.inputAccessoryView=toolBar;

//在监听方法中进行获取日期
-(void)test:(UIDatePicker *)picker
{
NSLog(@"%@",picker.date);
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
// HH 代表24小时 hh代表12小时
formatter.dateFormat = @"yyyy-MM-dd";
NSString *time = [formatter stringFromDate:picker.date];
self.textFiled.text=time;
}

UIBarButtonItem的Bordered和Plian两种style在iOS7上没有区别
可以在storyboard中设置UIBarButtonItem的identifier为Flexible Space获取拉伸的UIBarButtonItem