在使用iphone/ipad應用的時候，有時候應用有更新升級，appstore會提醒用戶有相應的更新，程序中需要在用戶打開應用的時候提醒用戶更新，那麼就需要自己在程序當中寫一個提醒事項，簡歷彈出框提醒用戶一下，就ok了！

具體代碼分享給大家，請大家注意，必須要有app的id。那麼你會想應用第一次沒有id怎麼辦？審請上線的時候就會得到id了，到時候有了id直接填上去就行了。

首先寫一個單例類：

 

//
//  AppUpdateGrade.h
//  QingDaoBroadcastIpad
//
//  Created by iHope on 13-7-23.
//  Copyright (c) 2013年 hlren. All rights reserved.
//  任海麗

#import <Foundation/Foundation.h>

@interface AppUpdateGrade : NSObject
{
    NSString *appId; //app的id
    NSString *trackViewUrl; //app的地址
}
+(AppUpdateGrade*)sharedAppupdateGrade; //創建
-(void)appUpdate:(NSString *)appleID; //更新
-(void)appGrade:(NSString *)appleID; //評分

@end

//
//  AppUpdateGrade.m
//  QingDaoBroadcastIpad
//
//  Created by iHope on 13-7-23.
//  Copyright (c) 2013年 hlren. All rights reserved.
//

#import "AppUpdateGrade.h"

@implementation AppUpdateGrade

static AppUpdateGrade* appUpdateGrade = nil;
+(AppUpdateGrade*)sharedAppupdateGrade
{
    @synchronized(self)
    {
        if (appUpdateGrade == nil)
        {
            appUpdateGrade = [[self alloc] init];
        }
    }
    return appUpdateGrade;
}

//更新升級
-(void)appUpdate:(NSString *)appleID
{
    appId = appleID;
    //http://itunes.apple.com/lookup?id=xx
    
    //根據appid從蘋果服務器上得到json數據,再從json數據中得到版本信息 
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
    // 設置URL
    [request setURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://itunes.apple.com/lookup?id=%@",appleID]]];
    // 設置HTTP方法
    [request setHTTPMethod:@"GET"];
    // 發送同步請求, 這裡得returnData就是返回得數據楽
    NSData *returnData = [NSURLConnection sendSynchronousRequest:request    returningResponse:nil error:nil];
    
    NSDictionary *jsonData = [NSJSONSerialization JSONObjectWithData:returnData options:0 error:nil];
    NSLog(@"%@",jsonData);
    
    NSArray *infoArray = [jsonData objectForKey:@"results"];
    if (infoArray.count!=0) {
        NSDictionary *releaseInfo = [infoArray objectAtIndex:0];
        NSString *latestVersion = [releaseInfo objectForKey:@"version"];
        NSString *trackViewUrl1 = [releaseInfo objectForKey:@"trackViewUrl"];//地址trackViewUrl
        trackViewUrl = trackViewUrl1; //地址
        double doubleUpdateVersion = [latestVersion doubleValue];
        
        
        //獲取當前version版本信息
        //當前運行程序的版本信息，可以在 mainBundle 裡面獲取：
        NSDictionary *infoDict = [[NSBundle mainBundle] infoDictionary];
        NSString *currentVersion = [infoDict objectForKey:@"CFBundleVersion"];
        double doubleCurrentVersion = [currentVersion doubleValue];
        NSLog(@"doubleCurrentVersion:%f,%f",doubleCurrentVersion,doubleUpdateVersion);
        
        if (doubleCurrentVersion < doubleUpdateVersion) {
            
            UIAlertView *alert;
            alert = [[UIAlertView alloc] initWithTitle:@"app應用名稱"
                                               message:@"有新版本，是否升級！"
                                              delegate: self
                                     cancelButtonTitle:@"取消"
                                     otherButtonTitles: @"升級", nil];
            alert.tag = 1001;
            [alert show];
        }
        
    }else{
        //無此應用
    }
    
}

//評分
-(void)appGrade:(NSString *)appleID{
    appId = appleID;
    BOOL neverGrade = [[[NSUserDefaults standardUserDefaults] objectForKey:@"neverGrade"] boolValue];
    if(neverGrade != YES) {
        //提醒評分 
        UIAlertView *alert;
        alert = [[UIAlertView alloc] initWithTitle:@"app應用名稱"
                                           message:@"請去appstore給我們評分"
                                          delegate: self
                                 cancelButtonTitle:@"取消"
                                 otherButtonTitles: @"現在去",@"不再提醒 ", nil];
        alert.tag = 1000;
        [alert show];
    }
}
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    switch (alertView.tag) {
        case 1000:
        {
            //評分
            // Never Review Button
            if (buttonIndex == 2)
            {
                NSString *number = [NSString stringWithFormat:@"%d", YES];
                [[NSUserDefaults standardUserDefaults] setObject:number forKey:@"neverGrade"];
                [[NSUserDefaults standardUserDefaults] synchronize];
            }
            // Review Button
            else if (buttonIndex == 1)
            {
                NSString *number = [NSString stringWithFormat:@"%d", YES];
                [[NSUserDefaults standardUserDefaults] setObject:number forKey:@"neverGrade"];
                [[NSUserDefaults standardUserDefaults] synchronize];
                
                //"itms-apps://ax.itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id=
                NSString *str = [NSString stringWithFormat:
                                 @"itms-apps://ax.itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id=%@",
                                 appId ];
                
                [[UIApplication sharedApplication] openURL:[NSURL URLWithString:str]];
            }
        }
            break;
        case 1001:
        {
            //升級            
            if (buttonIndex == 1) {
                NSLog(@"%@",trackViewUrl);
                [[UIApplication sharedApplication] openURL:[NSURL URLWithString:trackViewUrl]];
                
            }
        }
            break;
        default:
            break;
    }
    
}
@end

1、更新升級

需要得到當前應用的version版本，獲得之前版本的version，比較之下是否需要更新！

當前應用的version：

NSDictionary *infoDict = [[NSBundle mainBundle] infoDictionary];
        NSString *currentVersion = [infoDict objectForKey:@"CFBundleVersion"];

之前應用的version：

需要請求http://itunes.apple.com/lookup?id=appid來獲取數據，分析出version；

2、應用評分

"itms-apps://ax.itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id=appid“

直接打開這個鏈接就可以給應用評份；

 
 

使用，導入#import "AppUpdateGrade.h"

 

 升級  
    [[AppUpdateGrade sharedAppupdateGrade]appUpdate:@"appid"]; 
    //評分  afterDelay秒  60*1==60分鐘,表示1分鐘後調用pinfen方法  
    [self performSelector:@selector(pinfen) withObject:self afterDelay:1]; 

//升級
    [[AppUpdateGrade sharedAppupdateGrade]appUpdate:@"appid"];
    //評分  afterDelay秒  60*1==60分鐘,表示1分鐘後調用pinfen方法
    [self performSelector:@selector(pinfen) withObject:self afterDelay:1];

 

 (void)pinfen 
{ 
    //評分  
    [[AppUpdateGrade sharedAppupdateGrade]appGrade:@"appid"]; 
} 

- (void)pinfen
{
    //評分
    [[AppUpdateGrade sharedAppupdateGrade]appGrade:@"appid"];
}