After using breakpoint tracing in iOS xcode, nslog is not supported, and the method Summary corresponding to po cannot be implemented. xcodenslog

After using breakpoint tracing in iOS xcode, nslog is not supported, and the method Summary corresponding to po cannot be implemented. xcodenslog

After using breakpoint tracking today, we found that nslog could not be normal, and the corresponding value could not be printed using po. The value displayed at the breakpoint was nil. I checked it online, I have summarized the following feasible methods:

Method 1: Go to the project root directory-> PROGECT-> Build Setting-> Optimization Level, and set the value of "Optimization Level" to "None [-O0]". run the program again to solve the problem.

Method 2: Change the project release to Debug and re-run the project function.

Method 3: delete the-O2 corresponding to the Other C Flag in build setting. (This method is provided by netizens. I have not verified it. It is for reference only ).