Added share button to share device info

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

@@ -27,6 +27,7 @@ import butterknife.InjectView;
 public class MainActivity extends ListActivity {
 	@InjectView(R.id.tvBluetoothLe) TextView mTvBluetoothLeStatus;
 	@InjectView(R.id.tvBluetoothStatus) TextView mTvBluetoothStatus;
+	@InjectView(R.id.tvItemCount) TextView mTvItemCount;
 
 	private BluetoothUtils mBluetoothUtils;
 	private BluetoothLeScanner mScanner;
@@ -44,13 +45,21 @@ public class MainActivity extends ListActivity {
 				public void run() {
 					mDeviceStore.addDevice(deviceLe);
 					mLeDeviceListAdapter.replaceData(mDeviceStore.getDeviceList());
+					updateItemCount(mLeDeviceListAdapter.getCount());
 				}
 			});
 		}
 	};
 
+	private void updateItemCount(int count){
+		mTvItemCount.setText(
+				getString(
+						R.string.formatter_item_count,
+						String.valueOf(count)));
+	}
+
 	private void displayAboutDialog(){
-		// REALLY REALLY LAZY LIKIFIED DIALOG
+		// REALLY REALLY LAZY LINKIFIED DIALOG
 		final int paddingSizeDp = 5;
 		final float scale = getResources().getDisplayMetrics().density;
 		final int dpAsPixels = (int) (paddingSizeDp * scale + 0.5f);
@@ -83,6 +92,7 @@ public class MainActivity extends ListActivity {
 		mDeviceStore = new BluetoothLeDeviceStore();
 		mBluetoothUtils = new BluetoothUtils(this);
 		mScanner = new BluetoothLeScanner(mLeScanCallback, mBluetoothUtils);
+		updateItemCount(0);
 	}
 
 	@Override
@@ -97,6 +107,13 @@ public class MainActivity extends ListActivity {
 			menu.findItem(R.id.menu_scan).setVisible(false);
 			menu.findItem(R.id.menu_refresh).setActionView(R.layout.actionbar_progress_indeterminate);
 		}
+
+		if(getListView().getCount() > 0){
+			menu.findItem(R.id.menu_share).setVisible(true);
+		} else {
+			menu.findItem(R.id.menu_share).setVisible(false);
+		}
+
 		return true;
 	}
 
@@ -125,6 +142,8 @@ public class MainActivity extends ListActivity {
 		case R.id.menu_about:
 			displayAboutDialog();
 			break;
+		case R.id.menu_share:
+			mDeviceStore.shareDataAsEmail(this);
 		}
 		return true;
 	}
@@ -160,6 +179,7 @@ public class MainActivity extends ListActivity {
 		final boolean mIsBluetoothOn = mBluetoothUtils.isBluetoothOn();
 		final boolean mIsBluetoothLePresent = mBluetoothUtils.isBluetoothLeSupported();
 		mDeviceStore.clear();
+		updateItemCount(0);
 
 		mLeDeviceListAdapter = new LeDeviceListAdapter(this, mDeviceStore.getDeviceList());
 		setListAdapter(mLeDeviceListAdapter);

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

@@ -1,5 +1,8 @@
 package uk.co.alt236.btlescan.containers;
 
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;
@@ -8,6 +11,11 @@ import java.util.List;
 import java.util.Map;
 
 import uk.co.alt236.bluetoothlelib.device.BluetoothLeDevice;
+import uk.co.alt236.bluetoothlelib.util.ByteUtils;
+import uk.co.alt236.btlescan.util.CsvWriterHelper;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
 
 public class BluetoothLeDeviceStore {
 	private final Map<String, BluetoothLeDevice> mDeviceMap;
@@ -29,6 +37,26 @@ public class BluetoothLeDeviceStore {
 		mDeviceMap.clear();
 	}
 
+
+	private FileWriter generateFile(File file, String contents){
+		FileWriter writer = null;
+		try {
+			writer = new FileWriter(file);
+			writer.append(contents);
+			writer.flush();
+
+		} catch (IOException e) {
+			e.printStackTrace();
+		}finally{
+			try {
+				writer.close();
+			} catch (IOException e) {
+				e.printStackTrace();
+			}
+		}
+		return writer;
+	}
+
 	public List<BluetoothLeDevice> getDeviceList(){
 		final List<BluetoothLeDevice> methodResult = new ArrayList<BluetoothLeDevice>(mDeviceMap.values());
 
@@ -42,4 +70,55 @@ public class BluetoothLeDeviceStore {
 
 		return methodResult;
 	}
+
+
+	private String getListAsCsv(){
+		final List<BluetoothLeDevice> list = getDeviceList();
+		final StringBuilder sb =  new StringBuilder();
+		sb.append(CsvWriterHelper.addStuff("mac"));
+		sb.append(CsvWriterHelper.addStuff("name"));
+		sb.append(CsvWriterHelper.addStuff("firstTimestamp"));
+		sb.append(CsvWriterHelper.addStuff("firstRssi"));
+		sb.append(CsvWriterHelper.addStuff("currentTimestamp"));
+		sb.append(CsvWriterHelper.addStuff("currentRssi"));
+		sb.append(CsvWriterHelper.addStuff("adRecord"));
+		sb.append('\n');
+
+		for(BluetoothLeDevice device : list){
+			sb.append(CsvWriterHelper.addStuff(device.getAddress()));
+			sb.append(CsvWriterHelper.addStuff(device.getName()));
+			sb.append(CsvWriterHelper.addStuff(device.getFirstTimestamp()));
+			sb.append(CsvWriterHelper.addStuff(device.getFirstRssi()));
+			sb.append(CsvWriterHelper.addStuff(device.getTimestamp()));
+			sb.append(CsvWriterHelper.addStuff(device.getRssi()));
+			sb.append(CsvWriterHelper.addStuff(ByteUtils.byteArrayToHexString(device.getScanRecord())));
+			sb.append('\n');
+		}
+
+		return sb.toString();
+	}
+
+
+	public void shareDataAsEmail(Context context){
+		String to = null;
+        String subject = "Bluetooth LE Scan Results";
+        String message = "Please find attached the scan results.";
+
+        final Intent i = new Intent(Intent.ACTION_SEND);
+        i.setType("plain/text");
+        try {
+        	final File outputDir = context.getCacheDir();
+        	final File outputFile = File.createTempFile("export_tmp", ".csv", outputDir);
+        	outputFile.setReadable(true, false);
+            generateFile(outputFile, getListAsCsv());
+            i.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(outputFile));
+            i.putExtra(Intent.EXTRA_EMAIL, new String[] { to });
+            i.putExtra(Intent.EXTRA_SUBJECT, subject);
+            i.putExtra(Intent.EXTRA_TEXT, message);
+            context.startActivity(Intent.createChooser(i, "Please select your email client:"));
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+	}
 }

sample_app/src/uk/co/alt236/btlescan/util/CsvWriterHelper.java

@@ -0,0 +1,23 @@
+package uk.co.alt236.btlescan.util;
+
+public class CsvWriterHelper {
+	private static final String QUOTE = "\"";
+	public static String addStuff(Integer text){
+		return QUOTE + text + QUOTE + ","; 
+	}
+
+	public static String addStuff(Long text){
+		return QUOTE + text + QUOTE + ","; 
+	}
+
+	public static String addStuff(boolean value){
+		return QUOTE + value + QUOTE + ","; 
+	}
+	
+	public static String addStuff(String text){
+		if(text == null){text = "<blank>";}
+		text = text.replace(QUOTE, "'");
+
+		return QUOTE + text.trim() + QUOTE + ","; 
+	}
+}