我正在为iPad制作一篇文章阅读应用程序.我已经整合了社交分享功能,这意味着用户可以在Facebook上分享文章和谷歌邮件.
我正在使用UIActivityViewController进行共享.
我正在使用UIActivityViewController进行共享.
有一个按钮项,当用户点击该UIActivityViewController打开.我更新Xcode 6
当我运行在模拟器上运行良好但是我运行在iOS 7的真实设备(iPad)上,该应用程序在点击按钮项目崩溃.
这是我的代码：
- (IBAction)ysshareAction:(id)sender
{
NSURL *linkURL = [NSURL URLWithString:_DetailModal1[4]];//article url
NSMutableAttributedString *stringText = [[NSMutableAttributedString alloc] initWithString:_DetailModal1[0]];//_DetailModal1[0] contain article title////
[stringText addAttribute:NSLinkAttributeName value:linkURL range:NSMakeRange(0,stringText.length)];
NSArray * itemsArray = @[[Nsstring stringWithFormat:@"%@",_DetailModal1[0]],[NSURL URLWithString:_DetailModal1[4]]];
NSArray * applicationActivities = nil;
UIActivityViewController * AVC = [[UIActivityViewController alloc] initWithActivityItems:itemsArray applicationActivities:applicationActivities];
AVC.popoverPresentationController.sourceView = _webView;
[self presentViewController:AVC animated:YES completion:nil];
[AVC setCompletionHandler:^(Nsstring *act,BOOL done)
{
if([act isEqualToString:UIActivityTypeMail]) {
ServiceMsg = @"Mail sent!";
} else if([act isEqualToString:UIActivityTypePostToTwitter]) {
ServiceMsg = @"Article Shared!";
} else if([act isEqualToString:UIActivityTypePostToFacebook]) {
ServiceMsg = @"Article Shared!";
} else if([act isEqualToString:UIActivityTypeMessage]) {
ServiceMsg = @"SMS sent!";
} else if([act isEqualToString:UIActivityTypeAddToReadingList]) {
ServiceMsg = @"Added to Reading List";
} else if([act isEqualToString:UIActivityTypecopyToPasteboard]){
ServiceMsg = @"copied Link";
}
if ( done )
{
UIAlertView *Alert = [[UIAlertView alloc] initWithTitle:ServiceMsg message:@"" delegate:nil cancelButtonTitle:@"ok" otherButtonTitles:nil];
[Alert show];
}
}];
}
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解决方法
以下是问题
AVC.popoverPresentationController.sourceView = _webView;
你将不得不放置iOS8的条件popoverPresentationController被引入iOS 8和更高版本,所以你不能使用它与iOS 7
为了检查iOS8,您可以定义从here发现的宏
#define SYstem_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
并以下列方式使用它.
NSURL *linkURL = [NSURL URLWithString:_DetailModal1[4]];//article url
NSMutableAttributedString *stringText = [[NSMutableAttributedString alloc] initWithString:_DetailModal1[0]];//_DetailModal1[0] contain article title////
[stringText addAttribute:NSLinkAttributeName value:linkURL range:NSMakeRange(0,stringText.length)];
NSArray * itemsArray = @[[Nsstring stringWithFormat:@"%@",[NSURL URLWithString:_DetailModal1[4]]];
NSArray * applicationActivities = nil;
UIActivityViewController * AVC = [[UIActivityViewController alloc] initWithActivityItems:itemsArray applicationActivities:applicationActivities];
if(SYstem_VERSION_GREATER_THAN_OR_EQUAL_TO(@"8.0")){
AVC.popoverPresentationController.sourceView = _webView;
}
[self presentViewController:AVC animated:YES completion:nil];
有关iOS8中UIActivityViewController的更改信息,请参阅this