my app want to login with Twitter by using Fabric Android sdk
but appear
com.twitter.sdk.android.core.TwitterApiException: 401 Authorization Required
com.twitter.sdk.android.core.TwitterAuthException: Failed to get request token
at com.twitter.sdk.android.core.identity.OAuthController$1.failure(OAuthController.java:95)
at com.twitter.sdk.android.core.internal.oauth.OAuth1aService$1.failure(OAuth1aService.java:215)
At last I found the device system date and time is not correct, when time is correct. SDK works fine! I think this reason may appear in other SDKs which work with system time.