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這是我在開發Android程式時所遇到的一些問題，在這裡做一些紀錄:

1. Cannot invoke toString() on the primitive type int

http://stackoverflow.com/questions/9961892/cannot-invoke-tostring-on-the-primitive-type-int

2. The method makeText(Context, CharSequence, int) in the type Toast is not applicable for the arguments (new BleWrapperUiCallbacks.Null(){}, String, int)

http://stackoverflow.com/questions/27126503/toast-is-not-applicable-for-the-arguments

3. The method startLeScan(BluetoothAdapter.LeScanCallback) from the type BluetoothAdapter is deprecated

http://developer.android.com/reference/android/bluetooth/BluetoothAdapter.html

http://stackoverflow.com/questions/29290685/which-targetsdk-to-use-for-ble

4. 建立選單

http://www.jollen.org/blog/2009/06/jollen-android-programming-12.html