摘要：PropertiesalwaysBounceHorizontal //一个布尔值，决定是否弹跳总是出现水平滚动时达到结束内容的看法。默认值是NO 。@property(nonatomic) BOOL alwaysBounceHorizontal //如果这个属性被设置为YES而且bounces的值是YES，水平拖动是允许的内容，即使小于滚动视图的边界。默认值是NOalwaysBounceVertical //一个布尔值，决定是否反弹总是发生在垂直滚动到达结束内容。默认值是NO 。@property(nonatomic) BOOL alwaysBounceVertical... 阅读全文

摘要：+ (BOOL)isBlankString:(NSString *)string{if (string == nil) {returnYES;}if (string == NULL) {returnYES;}if ([string isKindOfClass:[NSNullclass]]) {returnYES;}if ([[string stringByTrimmingCharactersInSet:[NSCharacterSetwhitespaceAndNewlineCharacterSet]] length]==0) {returnYES;}returnNO;} 阅读全文