1 files changed, 216 insertions, 0 deletions
diff --git a/connectivity/bluetooth/BluetoothChat/BluetoothChatSample/src/main/java/com/example/android/bluetoothchat/DeviceListActivity.java b/connectivity/bluetooth/BluetoothChat/BluetoothChatSample/src/main/java/com/example/android/bluetoothchat/DeviceListActivity.java
new file mode 100644
index 00000000..8b70adc4
--- /dev/null
+++ b/connectivity/bluetooth/BluetoothChat/BluetoothChatSample/src/main/java/com/example/android/bluetoothchat/DeviceListActivity.java
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.bluetoothchat;
+
+import android.app.Activity;
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.Bundle;
+import android.view.View;
+import android.view.Window;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.ListView;
+import android.widget.TextView;
+
+import com.example.android.common.logger.Log;
+
+import java.util.Set;
+
+/**
+ * This Activity appears as a dialog. It lists any paired devices and
+ * devices detected in the area after discovery. When a device is chosen
+ * by the user, the MAC address of the device is sent back to the parent
+ * Activity in the result Intent.
+ */
+public class DeviceListActivity extends Activity {
+
+    /**
+     * Tag for Log
+     */
+    private static final String TAG = "DeviceListActivity";
+
+    /**
+     * Return Intent extra
+     */
+    public static String EXTRA_DEVICE_ADDRESS = "device_address";
+
+    /**
+     * Member fields
+     */
+    private BluetoothAdapter mBtAdapter;
+
+    /**
+     * Newly discovered devices
+     */
+    private ArrayAdapter<String> mNewDevicesArrayAdapter;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        // Setup the window
+        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
+        setContentView(R.layout.activity_device_list);
+
+        // Set result CANCELED in case the user backs out
+        setResult(Activity.RESULT_CANCELED);
+
+        // Initialize the button to perform device discovery
+        Button scanButton = (Button) findViewById(R.id.button_scan);
+        scanButton.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                doDiscovery();
+                v.setVisibility(View.GONE);
+            }
+        });
+
+        // Initialize array adapters. One for already paired devices and
+        // one for newly discovered devices
+        ArrayAdapter<String> pairedDevicesArrayAdapter =
+                new ArrayAdapter<String>(this, R.layout.device_name);
+        mNewDevicesArrayAdapter = new ArrayAdapter<String>(this, R.layout.device_name);
+
+        // Find and set up the ListView for paired devices
+        ListView pairedListView = (ListView) findViewById(R.id.paired_devices);
+        pairedListView.setAdapter(pairedDevicesArrayAdapter);
+        pairedListView.setOnItemClickListener(mDeviceClickListener);
+
+        // Find and set up the ListView for newly discovered devices
+        ListView newDevicesListView = (ListView) findViewById(R.id.new_devices);
+        newDevicesListView.setAdapter(mNewDevicesArrayAdapter);
+        newDevicesListView.setOnItemClickListener(mDeviceClickListener);
+
+        // Register for broadcasts when a device is discovered
+        IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
+        this.registerReceiver(mReceiver, filter);
+
+        // Register for broadcasts when discovery has finished
+        filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
+        this.registerReceiver(mReceiver, filter);
+
+        // Get the local Bluetooth adapter
+        mBtAdapter = BluetoothAdapter.getDefaultAdapter();
+
+        // Get a set of currently paired devices
+        Set<BluetoothDevice> pairedDevices = mBtAdapter.getBondedDevices();
+
+        // If there are paired devices, add each one to the ArrayAdapter
+        if (pairedDevices.size() > 0) {
+            findViewById(R.id.title_paired_devices).setVisibility(View.VISIBLE);
+            for (BluetoothDevice device : pairedDevices) {
+                pairedDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
+            }
+        } else {
+            String noDevices = getResources().getText(R.string.none_paired).toString();
+            pairedDevicesArrayAdapter.add(noDevices);
+        }
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+
+        // Make sure we're not doing discovery anymore
+        if (mBtAdapter != null) {
+            mBtAdapter.cancelDiscovery();
+        }
+
+        // Unregister broadcast listeners
+        this.unregisterReceiver(mReceiver);
+    }
+
+    /**
+     * Start device discover with the BluetoothAdapter
+     */
+    private void doDiscovery() {
+        Log.d(TAG, "doDiscovery()");
+
+        // Indicate scanning in the title
+        setProgressBarIndeterminateVisibility(true);
+        setTitle(R.string.scanning);
+
+        // Turn on sub-title for new devices
+        findViewById(R.id.title_new_devices).setVisibility(View.VISIBLE);
+
+        // If we're already discovering, stop it
+        if (mBtAdapter.isDiscovering()) {
+            mBtAdapter.cancelDiscovery();
+        }
+
+        // Request discover from BluetoothAdapter
+        mBtAdapter.startDiscovery();
+    }
+
+    /**
+     * The on-click listener for all devices in the ListViews
+     */
+    private AdapterView.OnItemClickListener mDeviceClickListener
+            = new AdapterView.OnItemClickListener() {
+        public void onItemClick(AdapterView<?> av, View v, int arg2, long arg3) {
+            // Cancel discovery because it's costly and we're about to connect
+            mBtAdapter.cancelDiscovery();
+
+            // Get the device MAC address, which is the last 17 chars in the View
+            String info = ((TextView) v).getText().toString();
+            String address = info.substring(info.length() - 17);
+
+            // Create the result Intent and include the MAC address
+            Intent intent = new Intent();
+            intent.putExtra(EXTRA_DEVICE_ADDRESS, address);
+
+            // Set result and finish this Activity
+            setResult(Activity.RESULT_OK, intent);
+            finish();
+        }
+    };
+
+    /**
+     * The BroadcastReceiver that listens for discovered devices and changes the title when
+     * discovery is finished
+     */
+    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            String action = intent.getAction();
+
+            // When discovery finds a device
+            if (BluetoothDevice.ACTION_FOUND.equals(action)) {
+                // Get the BluetoothDevice object from the Intent
+                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
+                // If it's already paired, skip it, because it's been listed already
+                if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
+                    mNewDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
+                }
+                // When discovery is finished, change the Activity title
+            } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
+                setProgressBarIndeterminateVisibility(false);
+                setTitle(R.string.select_device);
+                if (mNewDevicesArrayAdapter.getCount() == 0) {
+                    String noDevices = getResources().getText(R.string.none_found).toString();
+                    mNewDevicesArrayAdapter.add(noDevices);
+                }
+            }
+        }
+    };
+
+}