Yasser Mohamed

icon indicating an email [email protected]

icon location Shoubra, Cairo, Egypt icon location Computer Engineer, and I'm passionate in programming especially problem solving.

Results 2 issues of Yasser Mohamed

When I first run the app on my physical device, I get my app not launched at all. So how can I handle this error?

1 comment

Caused by: org.gradle.api.internal.provider.AbstractProperty$PropertyQueryException: Failed to calculate the value of task ':app:compileDebugJavaWithJavac' property 'options.generatedSourceOutputDirectory'.

java.lang.RuntimeException: Failed to call observer method

Could anyone here to help how to solve this exception ? E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.android.trackmysleepquality, PID: 4117 java.lang.RuntimeException: Failed to call observer method at androidx.lifecycle.ClassesInfoCache$MethodReference.invokeCallback(ClassesInfoCache.java:226) at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeMethodsForEvent(ClassesInfoCache.java:194) at...