Day6

1 改变状态栏（手机屏幕最上面的状态栏，电池时间那个栏目）

/** modify status bar */
-(UIStatusBarStyle)preferredStatusBarStyle{
    return UIStatusBarStyleLightContent;
}

2 增加蒙板的写法

/** 大图*/
- (IBAction)bigImage {
    //增加蒙板
    //将图片移动到视图的顶层
    //计算图片的目标位置，动画显示
    UIButton *button = [[UIButton alloc]initWithFrame:self.view.bounds];
    button.alpha = 0.5f;
    button.backgroundColor = [UIColor blackColor];
    [self.view addSubview:button];
    
    //将视图拿到顶层
    [self.view bringSubviewToFront:self.iconView];
    
    //先计算目标位置
    CGFloat viewW = self.view.bounds.size.width;
    CGFloat imageW = viewW;
    CGFloat imageH = imageW;
    CGFloat imageY = (self.view.bounds.size.height-imageH)*0.5;
//    [UIView beginAnimations:nil context:nil];
//    [UIView setAnimationDuration:2.0f];
//    self.iconView.frame = CGRectMake(0, imageY, imageW, imageH);
//    [UIView commitAnimations];
    
    [UIView animateWithDuration:1.0f animations:^{
        self.iconView.frame = CGRectMake(0, imageY, imageW, imageH);
    } completion:^(BOOL finished) {
        //
    }];
}

3 拦截首尾式动画结束的方法

-(void)smallImage{
    //动画变小
//    [UIView animateWithDuration:1.0f animations:^{
//        self.iconView.frame = CGRectMake(85, 135, 150, 150);
//
//    } completion:^(BOOL finished) {
//        [self.cover removeFromSuperview];
//    }];
    
    //拦截首尾式动画结束的方法
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:1.0f];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector:@selector(removeCover)];
    self.iconView.frame = CGRectMake(85, 135, 150, 150);
    [UIView commitAnimations];
    
    //隐藏遮罩
    
}

-(void)removeCover{
    [self.cover removeFromSuperview];
}

4 自定义代码块

将需要自定义的代码块选中，拉进右下角的｛｝库里面，选中edit，

然后将需要的变量改为 ： <#bianliang#>

5 字典转模型

//
//  QuestionObject.h
//  GuessPicture
//
//  Created by xin on 15-3-23.
//  Copyright (c) 2015年 Jackey. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface QuestionObject : NSObject
@property (nonatomic,copy) NSString *answer;
@property (nonatomic,copy) NSString *title;
@property (nonatomic,copy) NSString *icon;
@property (nonatomic,strong) NSArray *options;

-(instancetype)initWithDict:(NSDictionary *)dict;
+(instancetype)QuestionWith:(NSDictionary *)dict;
@end


//--------------------------------------------------------------
//
//  QuestionObject.m
//  GuessPicture
//
//  Created by xin on 15-3-23.
//  Copyright (c) 2015年 Jackey. All rights reserved.
//

#import "QuestionObject.h"

@implementation QuestionObject

-(instancetype)initWithDict:(NSDictionary *)dict
{
    self = [super init];
    if (self) {
        self.answer = dict[@"answer"];
        self.icon = dict[@"icon"];
        self.title = dict[@"title"];
        self.options = dict[@"options"];
    }
    return self;
}

+(instancetype)QuestionWith:(NSDictionary *)dict{
    return [[self alloc]initWithDict:dict];
}
@end

加载到controller

1 导入

#import "QuestionObject.h"

2 声明变量

@property (nonatomic,strong) NSArray *questions;

3 懒加载

-(NSArray *)questions{
    if(!_questions){
        NSArray *array = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle]pathForResource:@"questions.plist" ofType:nil]];
        NSMutableArray *arrayM =[NSMutableArray array];
        for(NSDictionary *dict in array){
            //QuestionObject *questionObject = ;
            [arrayM addObject:[QuestionObject QuestionWith:dict]];
        }
        _questions = arrayM;
    }
    return _questions;
}

4 加载

-(void)viewDidLoad{
    [super viewDidLoad];
    [self questions];
}