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我已经从网络服务下载图像,并且需要在Safari内打开图像或将其保存到相机胶卷。我试图在Safari中打开图像,但Safari浏览器无法打开。用图像启动Safari或保存到相机胶卷问题
var safari = UIApplication.SharedApplication;
var uri = new NSUrl(path); // where the image is saved to
safari.OpenUrl(uri);
这编译,但Safari浏览器没有启动
我必须保存至相机胶卷中的代码是这样的
PHPhotoLibrary.SharedPhotoLibrary.PerformChanges(() =>
{
using (var pool3 = new NSAutoreleasePool())
{ pool3.InvokeOnMainThread(delegate()
{ PHAssetChangeRequest.FromImage((UIImage)UIImage.FromFile(path));
});
}
}, (t, err) =>
{
if (!t)
{
using (var pool1 = new NSAutoreleasePool())
{
pool1.InvokeOnMainThread(delegate() {
var alert = new UIAlertView("Error saving file", "An error has occured saving your photo to the camera roll", null, "OK");
alert.Show();
};
}
else
{
using (var pool2 = new NSAutoreleasePool())
{
pool2.InvokeOnMainThread(delegate(){
var alert = new UIAlertView("Image saved", "Your image has been saved to the camera roll", null, "OK");
alert.Show();
});
};
}
});
其崩溃和烧伤(正确的权限已设置)
我不知道为什么这些工作看起来都是正确的。