I have created a PCL project, I host Mac with Visual Studio but when run iOS project, it gives error:
I tried to change in iOs building signing like below but nothing works for me.
Please help me solve this issue.
For iOS you need to register your app/device with Apple.
You will have to go to your Apple developer account and create a listing for your app and register the device you are testing on.
Also you will have to import your developer account into Xcode, this needs to be done because your development app also needs to be signed before it can be put on a physical device.
More information can be found in the Xamarin documentation.
The excerpt is this;
Otherwise you can click the Join a Program button and a web browser will be opened where you can sign-up.
Now you need to add your device to Xcode.
Now you have to pull the freshly created certificates to your Mac/Xcode.
Now I think you can start testing on your device. But if you need special iOS services (i.e. access to Game Center, iCloud, etc.) you will have to register your app as well. This is roughly a similar process as the one before this, but I will ahve to ask you to read the documentation on that or Google 'Provisioning for Application Services'. Before the post gets too long ;)
Note; this may change in the future because Apple has announced yesterday that sideloading (your own) apps (the thing you want to do here) will be free. So if you do not have a Apple developer account yet then you may want to wait a little while.