Toolbar usage problems, toolbar usage

Source: Internet
Author: User

Toolbar usage problems, toolbar usage

1. Pages used should inherit from AppCompatActivity


2. If the following error occurs during use:

Java. lang. IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window. FEATURE_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.

Modify the style as follows:

<Resources> <style name = "AppTheme" parent = "Theme. AppCompat. Light. NoActionBar"> <! -- Customize your theme here. --> </style> </resources>


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