Category Archives: Android

java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.

Usually we’re familiar with error message, but things became weird when app works in all phone except only one failed. I saw this error message in an Asus cellphone (Android 5.0.2) on 2020/08/14 when my app tried to connect to … Continue reading

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Android Error type 3 : Activity Class {} does not exist

I used Android Studio 3.5.3 to execute(install) an application on a Sony cellphone and it kept displayed Error Type 3 : xxxx.xxx.xxx.MainActivity does not exist. After Googled a few document, here’s what solved this problem. Just adb unstall the package … Continue reading

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Android Studio from SVN to Git (BitBucket), step by step

1.(Terminal) git svn clone http://svn.domain.com/svnroot/ 2.(BitBucket) Create repository, get repository url 3.(Android Studio) Open project (cloned in step 1) 4.(Android Studio) Android Studio -> Preferences -> Version Control -> Change none/SVN to Git 5.(Android Studio) VCS -> Commit 6.(Android Studio … Continue reading

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OneSignal Push Notification with Android Studio practice log

It took me one night to make it work, so I’d like to write it down for next time. Main Flow as follow diagram: Green fields means “what values you can get” White fields means “what values you should set” … Continue reading

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