Retrofit: java.lang.NoClassDefFoundError: java.util.Objects

[miladheydari]

this error throw when using retrofit version 2.5.0 in android lower than api 19

java.lang.NoClassDefFoundError: java.util.Objects at okhttp3.CertificatePinner.withCertificateChainCleaner(CertificatePinner.java:231) at okhttp3.OkHttpClient.<init>(OkHttpClient.java:271) at okhttp3.OkHttpClient$Builder.build(OkHttpClient.java:1054)

[JakeWharton]

This is a problem with OkHttp, not Retrofit. Note OkHttp 3.13+ requires API 21+ but if you're using 3.12 or earlier please file a bug.

[miladheydari]

ok, when retrofit depend on okhttp how to fix it for api level lower than 19?
@JakeWharton

[JakeWharton]

Retrofit doesn't require nor depend on 3.13 so it isn't forcing minSdk 21

On Mon, Mar 4, 2019 at 2:45 AM Milad Heydari [e-mail]
wrote:

ok, when retrofit depend on okhttp how to fix it for api level lower than
19?

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[sunil91]

E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.NoClassDefFoundError: java.util.Objects
at okhttp3.CertificatePinner.withCertificateChainCleaner(CertificatePinner.java:231)
at okhttp3.OkHttpClient.(OkHttpClient.java:238)
at okhttp3.OkHttpClient.(OkHttpClient.java:202)

[sunil91]

E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.NoClassDefFoundError: java.util.Objects
at okhttp3.CertificatePinner.withCertificateChainCleaner(CertificatePinner.java:231)
at okhttp3.OkHttpClient.(OkHttpClient.java:238)
at okhttp3.OkHttpClient.(OkHttpClient.java:202)

@JakeWharton

[tadell]

ok, when retrofit depend on okhttp how to fix it for api level lower than 19?
@JakeWharton

is your problem solved?
i have the same problem just in release apk and my okhhtp version is lower than 3.12.

[berkedel]

From Retrofit's changelog, from Retrofit 2.7.0 depends on OkHttp 3.14.4 that changes minimum requirements to Android 5 or later.

To support min SDK version 16, use Retrofit 2.6.4 and make sure OkHttp version 3.12.x (see this)