Recent off-campus training IOS, put in the engine room simulator used IPhone5 Kaodao IPhone3 simulator code running back, there will be strong and UIwindow errors, etc., how to modify? New to understand, the Supreme explain.
Reply:
1 Check the next version. xcode whether it is supported by ARC version because strong statements are generally supported by ARC version (not used ARC, just know that the ARC have Strong, the underlying logic has __stong)
2. Equipment problem, because many of ios api, are available from ios4.0 began. Look at your device's system version. Recommends upgrading to 5.0, 6.0 to see the situation (because 6.0 is not suitable for beginners to learn, add a lot of api)
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