EqualizerActivity Failed resolution of: Landroidx/databinding/DataBinderMapperImpl;

[webwayscript]

Try to implement EqualizerActivity. i aaadded in AndroidManifest and PlayerService

  equaliser_button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            EqualizerActivity.start(FmRadioPlayer_Activity.this, MyPlayerService.class);
        }
    });

i get this error

java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/databinding/DataBinderMapperImpl;
    at androidx.databinding.e.<clinit>(:32)
    at androidx.databinding.e.f(:284)
    at snow.player.ui.equalizer.EqualizerActivity.onCreate(:93)
    at android.app.Activity.performCreate(Activity.java:6662)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
    at android.app.ActivityThread.-wrap12(ActivityThread.java)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:154)
    at android.app.ActivityThread.main(ActivityThread.java:6077)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
 Caused by: java.lang.ClassNotFoundException: Didn't find class "androidx.databinding.DataBinderMapperImpl" on path: DexPathList[[zip file "/data/app/com.www.www-1/base.apk"],nativeLibraryDirectories=[/data/app/com.www.www-1/lib/x86, /data/app/com.www.www-1/base.apk!/lib/x86, /system/lib, /vendor/lib]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    at androidx.databinding.e.<clinit>(:32) 
    at androidx.databinding.e.f(:284) 
    at snow.player.ui.equalizer.EqualizerActivity.onCreate(:93) 
    at android.app.Activity.performCreate(Activity.java:6662) 
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118) 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707) 
    at android.app.ActivityThread.-wrap12(ActivityThread.java) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460) 
    at android.os.Handler.dispatchMessage(Handler.java:102) 
    at android.os.Looper.loop(Looper.java:154) 
    at android.app.ActivityThread.main(ActivityThread.java:6077) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756) 

[jrfeng]

Sorry, the last reply is wrong. I have deleted it. Please add the following rules to your proguard-rules.pro file and try again:

-keep class androidx.databinding.** { *; }
-keep class snow.player.ui.databinding.** { *; }

[webwayscript]

no luck same problem

   java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/databinding/DataBinderMapperImpl;

[jrfeng]

try:

-keep class snow.player.ui.** { *; }

[webwayscript]

its happend also if i disable minifyEnabled false.

[webwayscript]

I try all but its not wok same error .

[jrfeng]

try enable dataBinding for you application module:

android {
    ...

    dataBinding {
        enabled = true
    }
}

[webwayscript]

yes now working thank you