Use __block scope, so it won't be auto-retained.
Use __block scope, so it won't be auto-retained.

mikerowan/ios-library,manuyavuz/ios-library,zhangqinghe/ios-library,ipmobiletech/ios-library,grosch/ios-library,ipmobiletech/ios-library,grosch/ios-library,zhangqinghe/ios-library,manuyavuz/ios-library,manuyavuz/ios-library,mikerowan/ios-library,zhangqinghe/ios-library,mikerowan/ios-library,ipmobiletech/ios-library,grosch/ios-library