implement getAdapterInfo (Android only)

getAdapterInfo allows an easy way to check the state of the adapter and retrieve the address and the name even when it had not been initialized yet

Author: silviucm

src/android/BluetoothLePlugin.java

@@ -123,6 +123,7 @@ public class BluetoothLePlugin extends CordovaPlugin {
   private final String keyIsBonded = "isBonded";
   private final String keyIsConnected = "isConnected";
   private final String keyIsDiscovered = "isDiscovered";
+  private final String keyIsDiscoverable = "isDiscoverable";
   private final String keyPeripheral = "peripheral";
   private final String keyState = "state";
   private final String keyDiscoveredState = "discoveredState";
@@ -309,6 +310,8 @@ public boolean execute(String action, final JSONArray args, final CallbackContex
       initializeAction(args, callbackContext);
     } else if ("enable".equals(action)) {
       enableAction(callbackContext);
+    } else if ("getAdapterInfo".equals(action)) {
+      getAdapterInfoAction(callbackContext);
     } else if ("disable".equals(action)) {
       disableAction(callbackContext);
     } else if ("startScan".equals(action)) {
@@ -1008,6 +1011,47 @@ private void initializeAction(JSONArray args, CallbackContext callbackContext) {
     }
   }
 
+  
+  /**
+  * Retrieves a minimal set of adapter details 
+  * (address, name, initialized state, enabled state, scanning state, discoverable state)
+  */
+  private void getAdapterInfoAction(CallbackContext callbackContext) {    
+    JSONObject returnObj = new JSONObject();    
+
+    // Not yet initialized
+    if (bluetoothAdapter == null) {      
+      Activity activity = cordova.getActivity();
+      BluetoothManager bluetoothManager = (BluetoothManager) activity.getSystemService(Context.BLUETOOTH_SERVICE);
+      BluetoothAdapter bluetoothAdapterTmp = bluetoothManager.getAdapter();
+
+      // Since the adapter is not officially initialized, retrieve only the address and the name from the temp ad-hoc adapter
+      addProperty(returnObj, keyAddress, bluetoothAdapterTmp.getAddress());
+      addProperty(returnObj, keyName, bluetoothAdapterTmp.getName());
+      addProperty(returnObj, keyIsInitialized, false);
+      addProperty(returnObj, keyIsEnabled, false);
+      addProperty(returnObj, keyIsScanning, false);
+      addProperty(returnObj, keyIsDiscoverable, false);
+      PluginResult pluginResult = new PluginResult(PluginResult.Status.OK, returnObj);
+      pluginResult.setKeepCallback(true);
+      callbackContext.sendPluginResult(pluginResult);
+      return;      
+    } else {
+      // Already initialized, so use the bluetoothAdapter class property to get all the info
+      addProperty(returnObj, keyAddress, bluetoothAdapter.getAddress());
+      addProperty(returnObj, keyName, bluetoothAdapter.getName());
+      addProperty(returnObj, keyIsInitialized, true);
+      addProperty(returnObj, keyIsEnabled, bluetoothAdapter.isEnabled());
+      addProperty(returnObj, keyIsScanning, bluetoothAdapter.isDiscovering());
+      addProperty(returnObj, keyIsDiscoverable, bluetoothAdapter.getScanMode() == BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE);
+      PluginResult pluginResult = new PluginResult(PluginResult.Status.OK, returnObj);
+      pluginResult.setKeepCallback(true);
+      callbackContext.sendPluginResult(pluginResult);      
+      return;
+    }
+    
+  }
+
   private void enableAction(CallbackContext callbackContext) {
     if (isNotInitialized(callbackContext, false)) {
       return;