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今天五一国际劳动节，依然在正常上班，就分享一个知识点呗。在iOS开发过程中，App上线之后，进行版本更新的时候，需要及时提醒用户更新最新的App版本，那么就用到了版本更新提示框的使用。本章就来介绍一下App版本更新提示框的使用方法，各取所需，仅供参考。
一、根据第三方实现版本更新提示框的方法
根据第三方实现App版本更新提示框，进行了封装，然后直接将AppID作为参数传进去或者直接获取应用的bundleID来使用的，把工具类拖入到项目中，只需要Appdelegate文件里面一句代码就可集成实现的方法。原创的下载链接 具体实现操作步骤如下所示：
1、AppUpdater.h文件：
#import <UIKit/UIKit.h>
#import <SystemConfiguration/SystemConfiguration.h>
@interface AppUpdater : NSObject <UIAlertViewDelegate>
+ (id)sharedUpdater;
- (void)showUpdateWithForce;
- (void)showUpdateWithConfirmation;
- (void)forceOpenNewAppVersion:(BOOL)force
__attribute((deprecated("Use 'showUpdateWithForce' or 'showUpdateWithConfirmation' instead.")));
@property (nonatomic, weak) NSString *alertTitle;
@property (nonatomic, weak) NSString *alertMessage;
@property (nonatomic, weak) NSString *alertUpdateTitle;
@property (nonatomic, weak) NSString *alertCancelTitle;
@end
2、AppUpdater.m文件：
#import "AppUpdater.h"
@implementation AppUpdater
+ (id)sharedUpdater {
static AppUpdater *sharedUpdater;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sharedUpdater = [[AppUpdater alloc] init];
});
return sharedUpdater;
}
- (id)init {
self = [super init];
if(self) {
self.alertTitle = @"更新提示";
self.alertMessage = @"新版本%@已经上线，快来更新吧!";
self.alertUpdateTitle = @"前往更新";
self.alertCancelTitle = @"暂不更新";
}
return self;
}
- (void)showUpdateWithForce {
BOOL isConnection = [self isConnection];
if (!isConnection) return;
[self checkNewAppVersion:^(BOOL newVersion, NSString *version) {
if(newVersion) {
[[self alertUpdateForVersion:version withForce:YES] show];
}
}];
}
- (void)showUpdateWithConfirmation {
BOOL isConnection = [self isConnection];
if (!isConnection) return;
[self checkNewAppVersion:^(BOOL newVersion, NSString *version) {
if (newVersion) {
[[self alertUpdateForVersion:version withForce:NO] show];
}
}];
}
- (void)forceOpenNewAppVersion:(BOOL)force {
BOOL isConnection = [self isConnection];
if (!isConnection) return;
[self checkNewAppVersion:^(BOOL newVersion, NSString *version) {
if (newVersion) {
[[self alertUpdateForVersion:version withForce:force] show];
}
}];
}
#pragma mark - Private Methods
- (BOOL)isConnection {
const char *host = "itunes.apple.com";
BOOL reachable;
BOOL success;
SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithName(NULL, host);
SCNetworkReachabilityFlags flags;
success = SCNetworkReachabilityGetFlags(reachability, &flags);
reachable = success && (flags & kSCNetworkFlagsReachable) && !(flags & kSCNetworkFlagsConnectionRequired);
CFRelease(reachability);
return reachable;
}
NSString *appStoreURL = nil;
- (void)checkNewAppVersion:(void(^)(BOOL newVersion, NSString *version))completion {
NSDictionary *bundleInfo = [[NSBundle mainBundle] infoDictionary];
NSString *currentVersion = bundleInfo[@"CFBundleShortVersionString"];
NSURL *lookupURL = [NSURL URLWithString:[NSString stringWithFormat:@"http://itunes.apple.com/cn/lookup?id=%@", KAPPID]];
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^(void) {
NSData *lookupResults = [NSData dataWithContentsOfURL:lookupURL];
if(!lookupResults) {
completion(NO, nil);
return;
}
NSDictionary *jsonResults = [NSJSONSerialization JSONObjectWithData:lookupResults options:0 error:nil];
dispatch_async(dispatch_get_main_queue(), ^(void) {
NSUInteger resultCount = [jsonResults[@"resultCount"] integerValue];
if (resultCount){
NSDictionary *appDetails = [jsonResults[@"results"] firstObject];
NSString *appItunesUrl = [appDetails[@"trackViewUrl"] stringByReplacingOccurrencesOfString:@"&uo=4" withString:@""];
NSString *latestVersion = appDetails[@"version"];
if ([latestVersion compare:currentVersion options:NSNumericSearch] == NSOrderedDescending) {
appStoreURL = appItunesUrl;
completion(YES, latestVersion);
}else {
completion(NO, nil);
}
}else {
completion(NO, nil);
}
});
});
}
- (UIAlertView *)alertUpdateForVersion:(NSString *)version withForce:(BOOL)force {
NSString *msg = [NSString stringWithFormat:self.alertMessage, version];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:self.alertTitle message:msg delegate:self cancelTitle:force ? nil:self.alertUpdateTitle otherButtonTitles:force ? self.alertUpdateTitle:self.alertCancelTitle, nil];
return alert;
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 0) {
NSURL *appUrl = [NSURL URLWithString:appStoreURL];
if([[UIApplication sharedApplication] canOpenURL:appUrl]) {
[[UIApplication sharedApplication] openURL:appUrl];
}else {
UIAlertView *cantOpenUrlAlert = [[UIAlertView alloc] initWithTitle:@"Not Available" message:@"Could not open the AppStore, please try again later." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
[cantOpenUrlAlert show];
}
}
}
@end
3、AppDelegate.m文件：
AppDelegate里面使用的地方，具体代码如下所示：
#import "AppDelegate.h"
#import "BaseTabBarController.h"
#import "AppUpdater.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
sleep(3); //设置启动页显示时间
self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
//App版本更新提示
[[AppUpdater sharedUpdater] showUpdateWithConfirmation];
BaseTabBarController *tabController = [BaseTabBarController new];
self.window.rootViewController = tabController;
return YES;
}
代码图示如下所示：
以上代码实现之后，可以测试一下弹框效果，看看有没有正常显示版本更新的弹框，具体方法就是在xcode里面把已经上线的版本修改的低一点，然后再运行一次，在模拟器中就可测试出来，具体操作如下所示：
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