iOS Development--pch file creation

New company, took over the project even PCH files are not, each need to use the screen when the width of the high, are now written. Now that I've met you, just say the PCH thing.

1.command+n, open the new File window: ios->other->pch file, create a PCH document;

2. Search for the Prefix header in building setting and change the No to the right of the Precompile Prefix header to Yes. Precompile Prefix header is yes, pre-compiled PCH files are cached to improve compilation speed

3. Double-click the Prefix header below the precompile Prefix header to add the project path to the PCH file you just created, adding the format: "$ (srcroot)/project name/PCH filename", $ (srcroot) The meaning of the project root directory, when added, he will automatically help you into the path of your project.

iOS Development--pch file creation