Tag Archives: Android

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

Posted on 2020/08/14 by admin

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

Posted on 2020/07/16 by admin

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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OneSignal Push Notification with Android Studio practice log

Posted on 2016/07/29 by admin

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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