如圖：

(4)回到專案A，在你需要跳轉的地方寫上：

</pre><p><pre name="code" class="objc"> NSURL *url = [NSURL URLWithString:@"qiyuanmall://"]; // 這裡的qiyuanmall://" 你就可以替換成你在B專案的URL Schemes的值然後在後面加上@"://"
// 如果已經安裝了這個應用,就跳轉 
 

if ([[UIApplication sharedApplication] canOpenURL:url]) { [[UIApplication sharedApplication] openURL:url]; }else{ NSURL *appStore = [NSURL URLWithString:@"您app的appStore地址"];// 跳到APPStore [[UIApplication sharedApplication] openURL:appStore]; }

NSURL *url = [NSURL URLWithString:@"qiyuanmall://"];  請注意這裡 eg：把@"qiyuanmall://換成[NSString stringWithFormat:@"qiyuanmall://username=%@&age=%@&address=%@", @"test123", @"100", @"上海市"];
 

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{
    NSString *urlStr = [url absoluteString];
    if ([urlStr hasPrefix:@"qiyuanmall://"]) {
        NSLog(@"TestAppDemo1 request params: %@", urlStr);
        urlStr = [urlStr stringByReplacingOccurrencesOfString:@"qiyuanmall://" withString:@""];
        NSArray *paramArray = [urlStr componentsSeparatedByString:@"&"];
        NSLog(@"paramArray: %@", paramArray);
        NSMutableDictionary *paramsDic = [[NSMutableDictionary alloc] initWithCapacity:0];
        for (int i = 0; i < paramArray.count; i++) {
            NSString *str = paramArray[i];
            NSArray *keyArray = [str componentsSeparatedByString:@"="];
            NSString *key = keyArray[0];
            NSString *value = keyArray[1];
            [paramsDic setObject:value forKey:key];
            NSLog(@"key:%@ ==== value:%@", key, value);
        }

    }
    return NO;
}
 

 [[UIApplicationsharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General"]];
 
[[UIApplicationsharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=Restrictions"]];
一些其他可用的引數:
List of currently known URLs in the Settings app:
prefs:root=General&path=About  //關於
prefs:root=General&path=ACCESSIBILITY//重力感應 
prefs:root=AIRPLANE_MODE//飛航模式
prefs:root=General&path=AUTOLOCK//自動鎖定
prefs:root=General&path=USAGE/CELLULAR_USAGE//用量
prefs:root=Brightness//亮度調節
prefs:root=General&path=Bluetooth//藍芽
prefs:root=General&path=DATE_AND_TIME//時間和日期
prefs:root=FACETIME//
prefs:root=General//通用
prefs:root=General&path=Keyboard//鍵盤
prefs:root=CASTLE//
prefs:root=CASTLE&path=STORAGE_AND_BACKUP//
prefs:root=General&path=INTERNATIONAL//
prefs:root=LOCATION_SERVICES//
prefs:root=ACCOUNT_SETTINGS//
prefs:root=MUSIC//
prefs:root=MUSIC&path=EQ//
prefs:root=MUSIC&path=VolumeLimit//
prefs:root=General&path=Network//
prefs:root=NIKE_PLUS_IPOD//
prefs:root=NOTES//
prefs:root=NOTIFICATIONS_ID//
prefs:root=Phone//
prefs:root=Photos//
prefs:root=General&path=ManagedConfigurationList//
prefs:root=General&path=Reset//
prefs:root=Sounds&path=Ringtone//
prefs:root=Safari//
prefs:root=General&path=Assistant//
prefs:root=Sounds//
prefs:root=General&path=SOFTWARE_UPDATE_LINK//
prefs:root=STORE//
prefs:root=TWITTER//
prefs:root=General&path=USAGE//
prefs:root=VIDEO//
prefs:root=General&path=Network/VPN//
prefs:root=Wallpaper//
prefs:root=WIFI//
prefs:root=INTERNET_TETHERING//