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개발/Adroid

[android] error: cannot find symbol variable abc_ic_ab_back_mtrl_am_alpha

by KEI NETWORK 2019. 8. 28.
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I added a Fragment to my Android Studio project using 

New > Fragment > Fragment (Blank).

As a result when I try to run, the project won't compile because it cannot resolve R.drawable.abc_ic_ab_back_mtrl_am_alpha in

toolbar.setNavigationIcon(R.drawable.abc_ic_ab_back_mtrl_am_alpha);

 

The name of the resource was changed in the 23.2.0 support library.

Modify abc_ic_ab_back_mtrl_am_alpha to abc_ic_ab_back_material

Edit: In 23.2.1 the name of the component was changed back to abc_ic_ab_back_mtrl_am_alpha

Edit: In 24.0.0 the name of the component was changed to: abc_ic_ab_back_material

 

 

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