iOS版本更新比较及广告页展示判断
2016-03-04 本文已影响499人
跑调的安眠曲
更新后版本比较
目前app启动之后都会进行版本比较,虽然apple审核规则中明确指出自动检测版本的app将会被拒绝,但是很多app种仍然保持着app版本的检测,然后提供一个按钮跳转到app store去更新版本,具体做法应该是通过后台接口来控制是否开启检测,审核时关闭该功能,审核通过后,开启该功能。
鉴于NSString有提供compare的功能,但是会对于[@"10.1.1" compare:@"2.1.1"]
会出现问题,所以提供以下方法进行比较:
NSString+VersionCompare.h文件
#import <Foundation/Foundation.h>
typedef enum : NSUInteger {
BiggerResultType,
SmallerResultType,
EqualResultType
} CompareResultType;
@interface NSString (VersionCompare)
#pragma mark - 与老版本比较
- (CompareResultType)versionCompare:(NSString *)oldVersion;
@end
NSString+VersionCompare.m文件
#import "NSString+VersionCompare.h"
@implementation NSString (VersionCompare)
#pragma mark - 与老版本比较
- (CompareResultType)versionCompare:(NSString *)oldVersion {
NSArray *currentVersionArray = [self componentsSeparatedByString:@"."];
NSArray *oldVersionArray = [oldVersion componentsSeparatedByString:@"."];
NSInteger currentVersionLength = currentVersionArray.count;
NSInteger oldVersionLength = oldVersionArray.count;
//小数点个数不相等,按下标索引从小到大比较,若较小的位数都相同,那么较大位数的大(1.1.1 > 1.1)
if (currentVersionLength != oldVersionLength) {
NSInteger smallerLength = currentVersionLength < oldVersionLength ? currentVersionLength : oldVersionLength;
for (int i = 0; i < smallerLength; i++) {
if ([currentVersionArray[i] intValue] < [oldVersionArray[i] intValue]) {
return SmallerResultType;
} else if ([currentVersionArray[i] intValue] > [oldVersionArray[i] intValue]) {
return BiggerResultType;
} else {
continue; //相等就继续
}
}
//前面的都相等, (1.1.1 > 1.1)
return currentVersionLength < oldVersionLength ? SmallerResultType : BiggerResultType;
} else {
//小数点个数相等,按下标索引从小到大比较
for (int i = 0; i < currentVersionLength; i++) {
if ([currentVersionArray[i] intValue] < [oldVersionArray[i] intValue]) {
return SmallerResultType;
} else if ([currentVersionArray[i] intValue] > [oldVersionArray[i] intValue]) {
return BiggerResultType;
} else {
continue; //相等就继续
}
}
}
return EqualResultType;
}
@end
使用方法:
//引入头文件
#import "NSString+VersionCompare.h"
//使用
[@"1.1" versionCompare:@"1.1.1"]; //小
[@"10.2.0" versionCompare:@"2.2.0"]; //大
[@"1.2.0" versionCompare:@"1.2.1"]; //小
[@"1.1" versionCompare:@"1.1"]; //等
新版本广告展示判断
目前很多app在版本更新的时候,都会有更新内容提醒,具体操作办法如下:
//1.获取缓存的版本号
NSString *softwareVersion = [[NSUserDefaults standardUserDefaults] objectForKey:kSoftwareVersion];
//2.获取当前的版本号
NSString *currentVersion = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleShortVersionString"];
if (![currentVersion isEqualToString:softwareVersion]) {//新版本更新
[[NSUserDefaults standardUserDefaults] setObject:currentVersion forKey:kSoftwareVersion];
[[NSUserDefaults standardUserDefaults] synchronize];
//可能要营销的广告视图
}
补充:
1.获取系统版本号:
NSString *version = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleShortVersionString"];
2.跳转到app store详情页
NSURL *url = [NSURL URLWithString:@"https://itunes.apple.com/app/id你的appID"];
[[UIApplication sharedApplication] openURL:url];