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Android Studio 3.1.3, design view is always empty

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刺人心
刺人心 2021-02-02 10:56

I\'m new to android development and I have this problem with my Android Studio 3.1.3 demo project or any project that I create.

Even though that I can drag and drop diff

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  • 佛祖请我去吃肉
    佛祖请我去吃肉 (楼主)
    2021-02-02 11:08

    Ok my problem is solved!

    The following classes could not be instantiated: - android.support.v7.widget.Toolbar

    I changed the res/values/styles.xml file from this: