如何检索与Android的蓝牙设备选择器蓝牙设备的信息？ [英] How to retrieve Bluetooth device info with Android Bluetooth device picker?
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问题描述
下面是我使用的测试code：
公共类IOConnectDirect延伸活动{
私有静态最后字符串变量=IOConnectDirect;
私有静态最终诠释REQ code_BLUETOOTH_RESULT = 0;
@覆盖
保护无效的onCreate（包savedInstanceState）{
super.onCreate（savedInstanceState）;
Log.i（TAG的onCreate）;
的setTitle（的getTitle（）+ - + TAG）;
意图intentBluetooth =新意图（）;
intentBluetooth.setAction（android.bluetooth.devicepicker.action.LAUNCH）;
//android.bluetooth.devicepicker.action.DEVICE_SELECTED不工作。
startActivityForResult（intentBluetooth，REQ code_BLUETOOTH_RESULT）;
}
@覆盖
保护无效onActivityResult（INT申请code，INT结果code，意图数据）{
Log.i（TAG，onActivityResult（+请求code +，+结果code +））;
开关（要求code）{
案例REQ code_BLUETOOTH_RESULT：
Log.i（TAG，请求code = REQ code_BLUETOOTH_RESULT）;
如果（结果code == RESULT_OK）{
Log.i（TAG，RESULT_OK）;
//检索信息
捆绑额外= data.getExtras（）;
如果（临时演员！= NULL）{
Log.i（TAG，捆绑OK）;
}
}
其他 {
Log.i（！RESULT_OK =失败（TAG，+结果code +））;
Toast.makeText（此，失败（+结果code +），Toast.LENGTH_SHORT）.show（）;
}
打破;
默认：
Log.i（TAG，请求code = ????）;
打破;
}
}
}
下面是logcat的输出：
I / IOConnectDirect（第14956）：onActivityResult（0,0）
I / IOConnectDirect（第14956）：请求code = REQ code_BLUETOOTH_RESULT
I / IOConnectDirect（第14956）：RESULT_OK =失败（0）
在code ++工程（你需要首先激活蓝牙），我只是不能让它做什么，我想这是为了找回我的活动选择的蓝牙设备的名称和地址。
请注意：
- 在我没有尝试连接我只是想选择的设备信息。
- 在我所熟悉的其他方法来做到这一点像在Android的蓝牙聊天样品
更新
我最终使用一个BroadcastReceiver
公共类IOConnectDirect延伸活动{
私有静态最后字符串变量=IOConnectDirect;
@覆盖
保护无效的onCreate（包savedInstanceState）{
super.onCreate（savedInstanceState）;
Log.i（TAG的onCreate）;
BluetoothConnectActivityReceiver mBluetoothPickerReceiver =新BluetoothConnectActivityReceiver（）;
registerReceiver（mBluetoothPickerReceiver，新的IntentFilter（BluetoothDevicePicker.ACTION_DEVICE_SELECTED））;
startActivity（新意图（BluetoothDevicePicker.ACTION_LAUNCH）
.putExtra（BluetoothDevicePicker.EXTRA_NEED_AUTH，FALSE）
.putExtra（BluetoothDevicePicker.EXTRA_FILTER_TYPE，BluetoothDevicePicker.FILTER_TYPE_ALL）
.setFlags（Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS））;
}
公共类BluetoothConnectActivityReceiver扩展的BroadcastReceiver {
@覆盖
公共无效的onReceive（上下文的背景下，意图意图）{
如果（BluetoothDevicePicker.ACTION_DEVICE_SELECTED.equals（intent.getAction（）））{
context.unregisterReceiver（本）;
BluetoothDevice类设备=（BluetoothDevice类）intent.getParcelableExtra（BluetoothDevice.EXTRA_DEVICE）;
Toast.makeText（上下文，设备+ device.getAddress（），Toast.LENGTH_SHORT）.show（）;
}
}
}
解决方案
试试这个code：
私人最终的BroadcastReceiver mBluetoothPickerReceiver =新BluetoothConnectActivityReceiver（本）;
无效connectToService（字符串defaultAdapter）{
如果（defaultAdapter == NULL）{
registerReceiver（mBluetoothPickerReceiver，新的IntentFilter（BluetoothDevicePicker.ACTION_DEVICE_SELECTED））;
startActivity（新意图（BluetoothDevicePicker.ACTION_LAUNCH）
.putExtra（BluetoothDevicePicker.EXTRA_NEED_AUTH，FALSE）
.putExtra（BluetoothDevicePicker.EXTRA_FILTER_TYPE，BluetoothDevicePicker.FILTER_TYPE_ALL）
.setFlags（Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS））;
} 其他 {
。mCardroid.getCardroidService（）connectTo（defaultAdapter）;
}
}
公共类BluetoothConnectActivityReceiver扩展的BroadcastReceiver {
私人BluetoothConnectActivity bluetoothConnectActivity;
公共BluetoothConnectActivityReceiver（BluetoothConnectActivity bluetoothConnectActivity）{
this.bluetoothConnectActivity = bluetoothConnectActivity;
}
@覆盖
公共无效的onReceive（上下文的背景下，意图意图）{
如果（BluetoothDevicePicker.ACTION_DEVICE_SELECTED.equals（intent.getAction（）））{
context.unregisterReceiver（本）;
BluetoothDevice类设备=（BluetoothDevice类）intent.getParcelableExtra（BluetoothDevice.EXTRA_DEVICE）;
bluetoothConnectActivity.connectToService（device.getAddress（））;
}
}
}
完全code基准是：
HTTP： //$c$c.google.com/p/carbot/source/browse/trunk/src/net/cardroid/?r=8
Here is the test code that I am using :
public class IOConnectDirect extends Activity {
private static final String TAG = "IOConnectDirect";
private static final int REQCODE_BLUETOOTH_RESULT = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.i(TAG, "onCreate");
setTitle(getTitle() + "--" + TAG);
Intent intentBluetooth = new Intent();
intentBluetooth.setAction("android.bluetooth.devicepicker.action.LAUNCH");
//android.bluetooth.devicepicker.action.DEVICE_SELECTED not working .
startActivityForResult(intentBluetooth, REQCODE_BLUETOOTH_RESULT);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Log.i(TAG, "onActivityResult(" + requestCode +"," + resultCode + ")");
switch (requestCode) {
case REQCODE_BLUETOOTH_RESULT:
Log.i(TAG, "requestCode = REQCODE_BLUETOOTH_RESULT");
if(resultCode == RESULT_OK) {
Log.i(TAG, "RESULT_OK");
// Retrieve the Info
Bundle extras = data.getExtras();
if(extras != null) {
Log.i(TAG, "Bundle ok");
}
}
else {
Log.i(TAG, "!RESULT_OK = FAILED(" + resultCode + ")");
Toast.makeText(this, "Failed(" + resultCode +")", Toast.LENGTH_SHORT).show();
}
break;
default:
Log.i(TAG, "requestCode = ????");
break;
}
}
}
Here is the Logcat output :
I/IOConnectDirect(14956): onActivityResult(0,0)
I/IOConnectDirect(14956): requestCode = REQCODE_BLUETOOTH_RESULT
I/IOConnectDirect(14956): !RESULT_OK = FAILED(0)
The code works (you need to activate Bluetooth first ) , I am just unable to make it do what I want which is to retrieve the Bluetooth device name and address that I selected from the activity .
Note :
- I am not trying to connect I just want the select device information .
- I am familiar with other methods to do this like in the Android Bluetooth Chat Sample
UPDATE
I end up using a BroadcastReceiver
public class IOConnectDirect extends Activity {
private static final String TAG = "IOConnectDirect";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.i(TAG, "onCreate");
BluetoothConnectActivityReceiver mBluetoothPickerReceiver = new BluetoothConnectActivityReceiver();
registerReceiver(mBluetoothPickerReceiver, new IntentFilter(BluetoothDevicePicker.ACTION_DEVICE_SELECTED));
startActivity(new Intent(BluetoothDevicePicker.ACTION_LAUNCH)
.putExtra(BluetoothDevicePicker.EXTRA_NEED_AUTH, false)
.putExtra(BluetoothDevicePicker.EXTRA_FILTER_TYPE, BluetoothDevicePicker.FILTER_TYPE_ALL)
.setFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS));
}
public class BluetoothConnectActivityReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if(BluetoothDevicePicker.ACTION_DEVICE_SELECTED.equals(intent.getAction())) {
context.unregisterReceiver(this);
BluetoothDevice device = (BluetoothDevice) intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
Toast.makeText(context, "device" + device.getAddress(), Toast.LENGTH_SHORT).show();
}
}
}
解决方案
Try this code:
private final BroadcastReceiver mBluetoothPickerReceiver = new BluetoothConnectActivityReceiver(this);
void connectToService(String defaultAdapter) {
if (defaultAdapter == null) {
registerReceiver(mBluetoothPickerReceiver, new IntentFilter(BluetoothDevicePicker.ACTION_DEVICE_SELECTED));
startActivity(new Intent(BluetoothDevicePicker.ACTION_LAUNCH)
.putExtra(BluetoothDevicePicker.EXTRA_NEED_AUTH, false)
.putExtra(BluetoothDevicePicker.EXTRA_FILTER_TYPE, BluetoothDevicePicker.FILTER_TYPE_ALL)
.setFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS));
} else {
mCardroid.getCardroidService().connectTo(defaultAdapter);
}
}
public class BluetoothConnectActivityReceiver extends BroadcastReceiver {
private BluetoothConnectActivity bluetoothConnectActivity;
public BluetoothConnectActivityReceiver(BluetoothConnectActivity bluetoothConnectActivity) {
this.bluetoothConnectActivity = bluetoothConnectActivity;
}
@Override
public void onReceive(Context context, Intent intent) {
if(BluetoothDevicePicker.ACTION_DEVICE_SELECTED.equals(intent.getAction())) {
context.unregisterReceiver(this);
BluetoothDevice device = (BluetoothDevice) intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
bluetoothConnectActivity.connectToService(device.getAddress());
}
}
}
The reference of complete code is :
http://code.google.com/p/carbot/source/browse/trunk/src/net/cardroid/?r=8
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