Matt questions

• Google+ sign-in results in a "unknown error" - Google Play Game Services
• GamesClient not connecting. Error: "Call connect() and wait for onConnected() to be called."
• ProgressBar with a countdowntimer - Android
• Put blackline border around ScrollView - Android
• Programmatically scroll a ScrollView to focus on a Button or a view - Android
• Center content of TextView vertically & horizontally - LinearLayout
• Don't understand how to use GridLayout.spec()
• Passing ArrayList of objects through intent - Java (Android)
• How to make an Android launcher icon [closed]
• Multiple dex files - Conversion to Dalvik format failed - Unable to execute dex

Matt answers