废话不多说，直接上代码：

/** * Added by Bruce Yang on 2012.08.31.09.58~ * 从一个 app 中跳转到另外一个 app 中（也可以是网页地址，会在 safari 中打开）~ * 要修改 info.plist 中 URL types 键所对应的值方才能够从其他应用中跳转进来~ */-(void) openAnotherAppInThisApp {//    NSString* strIdentifier = @"http://www.baidu.com";    NSString* strIdentifier = @"companyname://com.companyname.bundleidentifier";    BOOL isExsit = [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:strIdentifier]];    if(isExsit) {        NSLog(@"App %@ installed", strIdentifier);        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:strIdentifier]];    }}/** * Added by Bruce Yang on 2012.08.31.09.60~ * 跳转到 appStore，并且定位在某个 app 的评论区~ */-(void) jumpToCommentArea {    NSString* strLoc = @"itms-apps://ax.itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id=536226604";    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:strLoc]];}