How to Use Permision Granted Block

How to Use Permision Granted Block i am useing with location van its work?blocks (1)

Location Sensor Takes Time To Detect Location.

but cant open screen

<!-- To request foreground location access, declare one of these permissions. -->
 <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
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