高仿新浪微博,写了个小demo

 1 #import "XHcenterBtn.h"
 2 #import "UIImage+XH.h"
 3 
 4 @implementation XHcenterBtn
 5 
 6 - (id)initWithFrame:(CGRect)frame
 7 {
 8     self = [super initWithFrame:frame];
 9     if (self) {
10         self.adjustsImageWhenHighlighted = NO;
11         self.imageView.contentMode = UIViewContentModeCenter;
12         self.titleLabel.textAlignment = NSTextAlignmentRight;
13         self.titleLabel.font = [UIFont boldSystemFontOfSize:19.0];
14         [self setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
15         [self setBackgroundImage:[UIImage resizedImageWithName:@"navigationbar_filter_background_highlighted"] forState:UIControlStateHighlighted];
16     }
17     return self;
18 }
19 
20 // 对标题的位置进行控制
21 -(CGRect)titleRectForContentRect:(CGRect)contentRect{
22     CGFloat titleX =0;
23     CGFloat titleY =0;
24     CGFloat titleW =contentRect.size.width * 0.7;
25     CGFloat titleH =contentRect.size.height;
26     return CGRectMake(titleX, titleY, titleW, titleH);
27 }
28 
29 // 对图片的位置进行控制
30 -(CGRect)imageRectForContentRect:(CGRect)contentRect{
31     CGFloat imageX =contentRect.size.width * 0.7;
32     CGFloat imageY =0;
33     CGFloat imageW =contentRect.size.width * 0.3;
34     CGFloat imageH =contentRect.size.height;
35     return CGRectMake(imageX, imageY, imageW, imageH);
36 }
37 
38 @end

/**
 *  将模型转成字典
 *  @return 字典
 */
- (NSDictionary *)keyValues
{
    NSMutableDictionary *keyValues = [NSMutableDictionary dictionary];
    
    [self enumerateIvarsWithBlock:^(XHIvar *ivar, BOOL *stop) {
        if (ivar.isSrcClassFromFoundation) return;
        
        // 1.取出属性值
        id value = ivar.value;
        if (!value) return;
        
        // 2.如果是模型属性
        if (ivar.type.typeClass && !ivar.type.fromFoundation) {
            value = [value keyValues];
        } else if ([self respondsToSelector:@selector(objectClassInArray)]) {
            // 3.处理数组里面有模型的情况
            Class objectClass = self.objectClassInArray[ivar.propertyName];
            if (objectClass) {
                value = [objectClass keyValuesArrayWithObjectArray:value];
            }
        }
        
        // 4.赋值
        NSString *key = [self keyWithPropertyName:ivar.propertyName];
        keyValues[key] = value;
    }];
    
    return keyValues;
}

/**
 *  通过模型数组来创建一个字典数组
 *  @param objectArray 模型数组
 *  @return 字典数组
 */
+ (NSArray *)keyValuesArrayWithObjectArray:(NSArray *)objectArray
{
    // 0.判断真实性
    if (![objectArray isKindOfClass:[NSArray class]]) {
        [NSException raise:@"objectArray is not a NSArray" format:nil];
    }
    
    // 1.过滤
    if (![objectArray isKindOfClass:[NSArray class]]) return objectArray;
    if (![[objectArray lastObject] isKindOfClass:self]) return objectArray;
    
    // 2.创建数组
    NSMutableArray *keyValuesArray = [NSMutableArray array];
    for (id object in objectArray) {
        [keyValuesArray addObject:[object keyValues]];
    }
    return keyValuesArray;
}

#pragma mark - 字典数组转模型数组
/**
 *  通过字典数组来创建一个模型数组
 *  @param keyValuesArray 字典数组
 *  @return 模型数组
 */
+ (NSArray *)objectArrayWithKeyValuesArray:(NSArray *)keyValuesArray
{
    // 1.判断真实性
    if (![keyValuesArray isKindOfClass:[NSArray class]]) {
        [NSException raise:@"keyValuesArray is not a NSArray" format:nil];
    }
    
    // 2.创建数组
    NSMutableArray *modelArray = [NSMutableArray array];
    
    // 3.遍历
    for (NSDictionary *keyValues in keyValuesArray) {
        if (![keyValues isKindOfClass:[NSDictionary class]]) continue;
        
        id model = [self objectWithKeyValues:keyValues];
        [modelArray addObject:model];
    }
    
    return modelArray;
}
我们都是站在巨人的肩膀上编程,呵呵!!!!!!!!!!!