Android JNI: How to see error messages from printf, fprintf and perror?

By default, stdout and stderr get send to /dev/null.

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This may be a simple problem but I am not able to find a solution. I am trying to print error messages to figure out errors in my C++ code in JNI. I have calls to printf, fprintf() and perror() but I cannot find where they are being printed.

I have looked inside adb logcat and it is not there (which makes sense). I found a few links that told me to #define LOG... and then use LOG's functions but I would prefer to stick with the initial fprintf and perror. Is there a way for me to see those messages in an easy way please?

Thank you very much! Android error-message jni link|improve this question asked Oct 22 '11 at 5:48Jary1616 100% accept rate.

By default, stdout and stderr get send to /dev/null. A solution I found was to run: adb shell stop adb shell setprop log. Redirect-stdio true adb shell start from developer.android.com/guide/developing/t... This didn't work for me for some strange reason.

I decided to use #define of LOG... Thanks.

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