Setting a subtitle on my Toolbar from a fragment

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陌清茗
陌清茗 2020-12-31 13:31

I am having some trouble setting the sub-title in my Toolbar from my fragment. I keep getting a Null Pointer Exception at the setSubTitle.

@Override
public          


        
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  •  遥遥无期
    2020-12-31 14:21

    To use the Toolbar and the Appcompat 21, you have to use an AppCompatActivity and use:

    ((AppCompatActivity) getActivity()).getSupportActionBar().setSubtitle("About");
    

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