【OC】當前版本和appStore版本比較
阿新 • • 發佈:2019-01-06
/// 判斷是否最新版本號(大於或等於為最新)
- (BOOL)isLastestVersion:(NSString *)currentVersion compare:(NSString *)lastestVersion {
if (currentVersion && lastestVersion) {
// 拆分成陣列
NSMutableArray *currentItems = [[currentVersion componentsSeparatedByString:@"."] mutableCopy];
NSMutableArray *lastestItems = [[lastestVersion componentsSeparatedByString:@"."] mutableCopy];
// 如果數量不一樣補0
NSInteger currentCount = currentItems.count;
NSInteger lastestCount = lastestItems.count;
if (currentCount != lastestCount) {
NSInteger count = labs(currentCount - lastestCount); // 取絕對值
for (int i = 0; i < count; ++i) {
if (currentCount > lastestCount) {
[lastestItems addObject:@"0"];
} else {
[currentItems addObject:@"0"];
}
}
}
// 依次比較
BOOL isLastest = YES ;
for (int i = 0; i < currentItems.count; ++i) {
NSString *currentItem = currentItems[i];
NSString *lastestItem = lastestItems[i];
if (currentItem.integerValue != lastestItem.integerValue) {
isLastest = currentItem.integerValue > lastestItem.integerValue;
break;
}
}
return isLastest;
}
return NO;
}