Fixed some static analysis issues

build.gradle

@@ -10,7 +10,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.1.0'
+        classpath 'com.android.tools.build:gradle:1.2.3'
     }
 }
 

library/project.properties

@@ -1,15 +0,0 @@
-# This file is automatically generated by Android Tools.
-# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
-#
-# This file must be checked in Version Control Systems.
-#
-# To customize properties used by the Ant build system edit
-# "ant.properties", and override values to adapt the script to your
-# project structure.
-#
-# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
-#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
-
-# Project target.
-target=android-19
-android.library=true

library/src/main/java/uk/co/alt236/bluetoothlelib/device/adrecord/AdRecord.java

@@ -12,7 +12,6 @@ import android.os.Parcelable;
  * Expanded by Alexandros Schillings
  */
 public final class AdRecord implements Parcelable{
-
 	//	02 # Number of bytes that follow in first AD structure
 	//	01 # Flags AD type
 	//	1A # Flags value 0x1A = 000011010

library/src/main/java/uk/co/alt236/bluetoothlelib/device/mfdata/IBeaconManufacturerData.java

@@ -126,7 +126,7 @@ public final class IBeaconManufacturerData {
 	}
 
 	private static String calculateUUIDString(final byte[] uuid){
-		final StringBuffer sb = new StringBuffer();
+		final StringBuilder sb = new StringBuilder();
 
 		for(int i = 0 ; i< uuid.length; i++){
 			if(i == 4){sb.append('-');}

library/src/main/java/uk/co/alt236/bluetoothlelib/util/AdRecordUtils.java

@@ -14,7 +14,7 @@ import android.util.SparseArray;
 public class AdRecordUtils {
 
 	public static String getRecordDataAsString(final AdRecord nameRecord) {
-		if(nameRecord == null){return new String();}
+		if(nameRecord == null){return "";}
 		return new String(nameRecord.getData());
 	}
 

library/src/main/java/uk/co/alt236/bluetoothlelib/util/ByteUtils.java

@@ -16,7 +16,7 @@ public class ByteUtils {
 	 * @return the string
 	 */
 	public static String byteArrayToHexString(final byte[] array){
-		final StringBuffer sb = new StringBuffer();
+		final StringBuilder sb = new StringBuilder();
 		boolean firstEntry = true;
 		sb.append('[');
 

library/src/main/java/uk/co/alt236/bluetoothlelib/util/IBeaconUtils.java

@@ -65,7 +65,7 @@ public class IBeaconUtils {
 	 * Ascertains whether a Manufacturer Data byte array belongs to an iBeacon;
 	 *
 	 * @param manufacturerData a Bluetooth LE device's raw manufacturerData.
-	 * @return
+	 * @return true if the manufacturer data belong to an iBeacon
 	 */
 	public static boolean isThisAnIBeacon(final byte[] manufacturerData){
 		if(manufacturerData == null){return false;}

sample_app/project.properties

@@ -1,15 +0,0 @@
-# This file is automatically generated by Android Tools.
-# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
-#
-# This file must be checked in Version Control Systems.
-#
-# To customize properties used by the Ant build system edit
-# "ant.properties", and override values to adapt the script to your
-# project structure.
-#
-# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
-#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
-
-# Project target.
-target=Google Inc.:Google APIs:19
-android.library.reference.1=../library

sample_app/src/main/java/uk/co/alt236/btlescan/activities/DeviceControlActivity.java

@@ -76,7 +76,6 @@ public class DeviceControlActivity extends Activity {
 
 	private boolean mConnected = false;
 	private String mExportString;
-	private BluetoothLeDevice mDevice;
 
 	// Code to manage Service lifecycle.
 	private final ServiceConnection mServiceConnection = new ServiceConnection() {
@@ -280,9 +279,9 @@ public class DeviceControlActivity extends Activity {
 		setContentView(R.layout.activity_gatt_services);
 
 		final Intent intent = getIntent();
-		mDevice = intent.getParcelableExtra(EXTRA_DEVICE);
+		final BluetoothLeDevice device = intent.getParcelableExtra(EXTRA_DEVICE);
-		mDeviceName = mDevice.getName();
+		mDeviceName = device.getName();
-		mDeviceAddress =  mDevice.getAddress();
+		mDeviceAddress =  device.getAddress();
 
 		ButterKnife.inject(this);
 

sample_app/src/main/java/uk/co/alt236/btlescan/activities/DeviceDetailsActivity.java

@@ -77,7 +77,7 @@ public class DeviceDetailsActivity extends ListActivity{
 				CompanyIdentifierResolver.getCompanyName(iBeaconData.getCompanyIdentifier(), getString(R.string.unknown))
 				+ " (" + hexEncode(iBeaconData.getCompanyIdentifier()) + ")");
 		tvAdvert.setText(iBeaconData.getIBeaconAdvertisement() + " (" + hexEncode( iBeaconData.getIBeaconAdvertisement() ) + ")");
-		tvUUID.setText(iBeaconData.getUUID().toString());
+		tvUUID.setText(iBeaconData.getUUID());
 		tvMajor.setText(iBeaconData.getMajor() + " (" + hexEncode( iBeaconData.getMajor() ) + ")");
 		tvMinor.setText(iBeaconData.getMinor() + " (" + hexEncode( iBeaconData.getMinor() ) + ")");
 		tvTxPower.setText(iBeaconData.getCalibratedTxPower() + " (" + hexEncode( iBeaconData.getCalibratedTxPower() ) + ")");

sample_app/src/main/java/uk/co/alt236/btlescan/activities/MainActivity.java

@@ -35,7 +35,7 @@ public class MainActivity extends ListActivity {
 	private LeDeviceListAdapter mLeDeviceListAdapter;
 	private BluetoothLeDeviceStore mDeviceStore;
 
-	private BluetoothAdapter.LeScanCallback mLeScanCallback = new BluetoothAdapter.LeScanCallback() {
+	private final BluetoothAdapter.LeScanCallback mLeScanCallback = new BluetoothAdapter.LeScanCallback() {
 		@Override
 		public void onLeScan(final BluetoothDevice device, final int rssi, final byte[] scanRecord) {
 
@@ -121,10 +121,9 @@ public class MainActivity extends ListActivity {
 
 	@Override
 	protected void onListItemClick(final ListView l, final View v, final int position, final long id) {
-		final BluetoothLeDevice device = (BluetoothLeDevice) mLeDeviceListAdapter.getItem(position);
+		final BluetoothLeDevice device = mLeDeviceListAdapter.getItem(position);
 		if (device == null) return;
 
-
 		final Intent intent = new Intent(this, DeviceDetailsActivity.class);
 		intent.putExtra(DeviceDetailsActivity.EXTRA_DEVICE, device);
 

sample_app/src/main/java/uk/co/alt236/btlescan/adapters/LeDeviceListAdapter.java

@@ -57,7 +57,7 @@ public class LeDeviceListAdapter extends SimpleCursorAdapter {
 			viewHolder.ibeaconDistance = (TextView) view.findViewById(R.id.ibeacon_distance);
 			viewHolder.ibeaconUUID = (TextView) view.findViewById(R.id.ibeacon_uuid);
 			viewHolder.ibeaconTxPower = (TextView) view.findViewById(R.id.ibeacon_tx_power);
-			viewHolder.ibeaconSection = (View) view.findViewById(R.id.ibeacon_section);
+			viewHolder.ibeaconSection = view.findViewById(R.id.ibeacon_section);
 			viewHolder.ibeaconDistanceDescriptor = (TextView) view.findViewById(R.id.ibeacon_distance_descriptor);
 			view.setTag(viewHolder);
 		} else {

sample_app/src/main/java/uk/co/alt236/btlescan/containers/BluetoothLeDeviceStore.java

@@ -44,7 +44,7 @@ public class BluetoothLeDeviceStore {
 	}
 
 
-	private FileWriter generateFile(final File file, final String contents){
+	private static FileWriter generateFile(final File file, final String contents){
 		FileWriter writer = null;
 		try {
 			writer = new FileWriter(file);

sample_app/src/main/java/uk/co/alt236/btlescan/util/BluetoothUtils.java

@@ -10,14 +10,13 @@ import android.content.pm.PackageManager;
 public final class BluetoothUtils {
 	private final Activity mActivity;
 	private final BluetoothAdapter mBluetoothAdapter;
-	private final BluetoothManager mBluetoothManager;
+
-	
 	public final static int REQUEST_ENABLE_BT = 2001;
 	
 	public BluetoothUtils(final Activity activity){
 		mActivity = activity;
-		mBluetoothManager = (BluetoothManager) mActivity.getSystemService(Context.BLUETOOTH_SERVICE);
+		final BluetoothManager btManager = (BluetoothManager) mActivity.getSystemService(Context.BLUETOOTH_SERVICE);
-		mBluetoothAdapter = mBluetoothManager.getAdapter();
+		mBluetoothAdapter = btManager.getAdapter();
 	}
 	
 	public void askUserToEnableBluetoothIfNeeded(){