Establish the API level about android-fhir HOT 1 CLOSED

I tested the current SDK (master branch) on emulators and I can confirms it works well down to API level 21. This includes the serialization/deserialization of FHIR resources as well as the serialization/deserialization of CQL libraries which was a key sticking point during our integration with cql engine.

However, when trying on API level 19 there's this error:

05-15 12:09:05.044 3357-3357/com.google.fhirengine.example E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.google.fhirengine.example, PID: 3357
java.lang.VerifyError: org/apache/log4j/config/PropertySetter
at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:805)
at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:768)
at org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigurator.java:648)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:514)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:580)
at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter.java:526)
at org.apache.log4j.LogManager.(LogManager.java:127)
at org.slf4j.impl.Log4jLoggerFactory.(Log4jLoggerFactory.java:66)
at org.slf4j.impl.StaticLoggerBinder.(StaticLoggerBinder.java:72)
at org.slf4j.impl.StaticLoggerBinder.(StaticLoggerBinder.java:45)
at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150)
at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124)
at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:412)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383)
at ca.uhn.fhir.context.FhirContext.(FhirContext.java:80)
at com.google.fhirengine.resource.ResourceModule.getFhirContext(ResourceModule.java:29)
at com.google.fhirengine.resource.ResourceModule_GetFhirContextFactory.proxyGetFhirContext(ResourceModule_GetFhirContextFactory.java:27)
at com.google.fhirengine.DaggerFhirEngineComponent.getIParser(DaggerFhirEngineComponent.java:34)
at com.google.fhirengine.DaggerFhirEngineComponent.getDatabaseImpl(DaggerFhirEngineComponent.java:38)
at com.google.fhirengine.DaggerFhirEngineComponent.getFhirEngineImpl(DaggerFhirEngineComponent.java:62)
at com.google.fhirengine.DaggerFhirEngineComponent.getFhirEngine(DaggerFhirEngineComponent.java:75)
at com.google.fhirengine.example.MainActivity.onCreate(MainActivity.java:95)
at android.app.Activity.performCreate(Activity.java:5231)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)

which is an issue due to missing java libraries on Android which are used by HAPI FHIR.

This will likely require changes to HAPI FHIR - or some kind of black magic to provide those libraries somehow. I will create another issue for that, and to close this issue, I will merely add a disclaimer to the README file to state the min api level.

from android-fhir.