Error of arc forbids explicit message send of release generated by xcode Compilation

If you don't know what arc is, You can Google it.

Problem: the current project is not arc, but the third-party libraries we want to reference, such as afnetworking on git hub, mostly support arc. Therefore, the error "arc forbids explicit message send of release" is generated during compilation.

Solution: add the-fobjc-arc parameter to the file that requires arc compilation.

Using xcode 4.5 As An Example

Click the current project name on the left side of xcode, click targets on the right side, expand build phases, expand compile source, find the file name of the compilation error, double-click it, add the-fobjc-arc parameter, save, recompile the Clean Project to solve the problem.

PS: to check whether your current project has enabled arc, click the project name on the left of xcode,Open "build setting" and find "clang_enable_objc_arc"