这里 iOS 高级地图 - setAppId 崩溃

Question

I have an odd crash that is happening to a minority of our users, but frequently enough to be a concern.

if(!NMAApplicationContext.isInitialized()) {
  NMAApplicationContext.setAppId(HERE_MAP_APP_ID, appCode: HERE_MAP_APP_CODE, licenseKey: HERE_MAP_LICENSE_KEY)
}

Any ideas what might cause this init call to fail?

Thanks!

Additional Info:

From our crashlytics report,

Please let me know if you need additional info. Thanks! Update - I was able to capture the crash in XCode. Stacktrace:

frame #0: 0x00000001bd4520dc libsystem_kernel.dylib`__pthread_kill + 8
frame #1: 0x00000001bd4cb094 libsystem_pthread.dylib`pthread_kill$VARIANT$mp + 380
frame #2: 0x00000001bd3abea8 libsystem_c.dylib`abort + 140
frame #3: 0x0000000104724f60 NMAKit`___lldb_unnamed_symbol2248$$NMAKit + 476

I was able to repro it. The code is above is called on foregrounding, and it appears that the isInitialized call is returning false on a foregrounding (not a fresh app start), so it is trying to reInit the library....and then it crashes. Hope that helps.

Answer 1

Your code :

if(!NMAApplicationContext.isInitialized()) {
  NMAApplicationContext.setAppId(HERE_MAP_APP_ID, appCode: HERE_MAP_APP_CODE, licenseKey: HERE_MAP_LICENSE_KEY)
}

Causes crash because it has incorrect API usage:

1. Set credentials should be set before ANY HereSDK API call was used.
2. The NMAApplicationContext doesn't provide the authorize verification methods, the NMAApplicationContext.isInitialized() checks whether map functionality is ready to use (whether engine already started). The NMAApplicationContext.isInitialized() is checked before custom configuration setup .

How to solve crash:

1. Remove the NMAApplicationContext.isInitialized() if statement
2. Call the NMAApplicationContext.setAppId(HERE_MAP_APP_ID, appCode: HERE_MAP_APP_CODE, licenseKey: HERE_MAP_LICENSE_KEY) method and check the NMAApplicationContextError return value whether setup of credential was successful.