android studio hello world example download

myBluetooth = BluetoothAdapter.getDefaultAdapter() if(myBluetooth = null) private void turnOffLed()ītSocket.getOutputStream().write('TF'.toString().getBytes()) ītSocket.getOutputStream().write('TO'.toString(). Writing a stable code avoids weird erros, so it’s good to check if the device has bluetooth adapter and whether it’s activated. Run Android Hello World App To run android applications we need to click on Run button or press Shift + F10 like as shown below After clicking on the play button new window will open in that select Android Virtual Device (AVD) and click OK like as shown below.

Import import import import import import import import import Ĭreate variables to control bluetooth: private BluetoothAdapter myBluetooth = null private Set pairedDevices btnPaired = (Button)findViewById(R.id.button) devicelist = (ListView)findViewById(R.id.listView) (You can also use your own device) Run the device: emulator -avd DEVICE. You might have to fiddle a bit and search for advice the on-site instructions arent always helpful.

Use the interactive AVD Manager ( android avd ). Import the followings packages: import Ĭreate widgets variables to “call” the widgets used to create the layout: Button btnPaired ListView devicelist SDK/build-tools/LATEST (as installed in step 1) Create an Android virtual device. Java folder contains the package of the apk (), and all the source code.

On the left side there’s a folder called “app “, open it and you’ll see other folder called “java”.

Android studio hello world example download