the following classes could not be found :-android.support.design.widget.NavigationView" -


when use <navigationview /> tag of <navigation drawer />, right corner of screen shows line:

"the following classes not found :-android.support.design.widget.navigationview"

so how can fix solution?

enter image description here

make sure have added below line in app level build.gradle.

compile 'com.android.support:design:26.+'

change '26.+' according tarketsdkversion.


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