when i add or update a dependency in app gradle class R will not find in my activity class.
"android cannot resolve symbol R"
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4click on "sync now" – Tim Oct 22 '18 at 11:33
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I did it, but it dose not work! – mohammadReza Abiri Oct 22 '18 at 11:35
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3That means you have some errors while building the project. Find and fix them – Vucko Oct 22 '18 at 11:35
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provide your logcat report, an error is something else – Rahul Chokshi Oct 22 '18 at 11:40
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Terminal -> `gradlew clean build`. That'll show any errors in your build process. – Michael Dodd Oct 22 '18 at 11:44
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Check your package name that file, sometime it occurs due to package mismatch. If package is ok, then re-starting a project may help. – Neck Oct 22 '18 at 11:45
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check res folder – Bunny Oct 22 '18 at 11:52
1 Answers
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Top yellow bar has a function "Sync now". You can click it and it will sync the Gradle files.
If this doesn't work you can try
Build > Clean Project
Build > Rebuild Project
You can also try
File > Sync Project with Gradle Files
Beasteca
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1In a case like this question please close the question against the canonical duplicate. – jww Oct 22 '18 at 13:26