Jack Trowbridge questions

• destroy an android service
• NullPointerException while setting toolbar
• Android: vibrator method (if phone has no vibrator?)
• android (change string in java code)
• Using Refresh Token Exception { "error" : "invalid_grant" }'
• Only update the current Android widget ID in update method
• degree symbol in TextView
• Convert a number to 2 decimal places in Java
• Android: failed to convert @drawable/picture into a drawable

Jack Trowbridge answers