檢查iphone是否安裝某app 【轉】

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轉自http://blog.csdn.net/zengconggen/article/details/7714514#

  開發中遇到一個問題：公司多個產品時，希望在一個產品A中可以直接開啟另外的某個產品B。如果使用者尚未安裝產品B， 則開啟app store下載頁面。 對於這個問題：有3個技術點： 1、產品B是否已安裝的檢測。 2、應用內開啟其他app的技術：參考：https://developer.apple.com/library/IOs/#documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/AdvancedAppTricks/AdvancedAppTricks.html#//apple_ref/doc/uid/TP40007072-CH7-SW18

 3、從應用跳轉至app下載頁面的技術：參考：http://blog.csdn.net/zengconggen/article/details/6789420 對於第2、3點，本文略過不講。現提供第1技術點方案：（說明：技術有風險，有可能導致app被拒。不過app store有類似上線作品。看RP）解決方案1：(經驗證：該方案真機ios5無效，模擬器可以)// Declaration  BOOL APCheckIfAppInstalled(NSString *bundleIdentifier); // Bundle identifier (eg. com.apple.mobilesafari) used to track apps    // Implementation    BOOL APCheckIfAppInstalled(NSString *bundleIdentifier)  {      static NSString *const cacheFileName = @"com.apple.mobile.installation.plist";      NSString *relativeCachePath = [[@"Library" stringByAppendingPathComponent: @"Caches"] stringByAppendingPathComponent: cacheFileName];      NSDictionary *cacheDict = nil;      NSString *path = nil;      // Loop through all possible paths the cache could be in      for (short i = 0; 1; i++)      {            switch (i) {      case 0: // Jailbroken apps will find the cache here; their home directory is /var/mobile          path = [NSHomeDirectory() stringByAppendingPathComponent: relativeCachePath];          break;      case 1: // App Store apps and Simulator will find the cache here; home (/var/mobile/) is 2 directories above sandbox folder          path = [[NSHomeDirectory() stringByAppendingPathComponent: @"../.."] stringByAppendingPathComponent: relativeCachePath];          break;      case 2: // If the app is anywhere else, default to hardcoded /var/mobile/          path = [@"/var/mobile" stringByAppendingPathComponent: relativeCachePath];          break;      default: // Cache not found (loop not broken)          return NO;          break; }            BOOL isDir = NO;          if ([[NSFileManager defaultManager] fileExistsAtPath: path isDirectory: &isDir] && !isDir) // Ensure that file exists              cacheDict = [NSDictionary dictionaryWithContentsOfFile: path];            if (cacheDict) // If cache is loaded, then break the loop. If the loop is not "broken," it will return NO later (default: case)              break;      }        NSDictionary *system = [cacheDict objectForKey: @"System"]; // First check all system (jailbroken) apps      if ([system objectForKey: bundleIdentifier]) return YES;      NSDictionary *user = [cacheDict objectForKey: @"User"]; // Then all the user (App Store /var/mobile/Applications) apps      if ([user objectForKey: bundleIdentifier]) return YES;        // If nothing returned YES already, we‘ll return NO now      return NO;  }  解決方案2：參考：http://blog.csdn.net/zengconggen/article/details/7714466本方案有限制：只能擷取到使用者最近運行過的app。對於已安裝但是不在最近有啟動並執行app。不適用。BOOL isExsit = [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"rumtel://com.rumtel.AudioManager"]];  NSLog(@"App %@ installed", identifier);  if (isExsit)   {      [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"rumtel://com.rumtel.AudioManager?a=1&b=2#sect"]];  }  else  {      //開啟app store下載頁面  }  方案3需要知道B的開啟地址。可用。最終方案確定為3附：目前公開的app相關資料：http://wiki.akosma.com/IPhone_URL_Schemes

 

檢查iphone是否安裝某app 【轉】