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I can't get this snippet running:

TimeBasedRollingPolicy<ILoggingEvent> rollingPolicy = new TimeBasedRollingPolicy<>();
rollingPolicy.setFileNamePattern("%d{yyyy-MM-dd}.log");
rollingPolicy.start();

Whatever pattern I try, I keep getting

Caused by: java.lang.IllegalStateException: FileNamePattern [%d{yyyy-MM-dd}.log] does not contain a valid DateToken
    at ch.qos.logback.core.rolling.TimeBasedFileNamingAndTriggeringPolicyBase.start(TimeBasedFileNamingAndTriggeringPolicyBase.java:46)
    at ch.qos.logback.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy.start(DefaultTimeBasedFileNamingAndTriggeringPolicy.java:32)
    at ch.qos.logback.core.rolling.TimeBasedRollingPolicy.start(TimeBasedRollingPolicy.java:90)

I've tried various examples from the docs, but what works in logback.xml doesn't seem to work in code.

maaartinus
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1 Answers1

3

According to this: https://github.com/tony19/logback-android/issues/51 you need a context and an appender. There is an example there.

Dave Richardson
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