寻找Android的蓝牙配对设备 [英] Finding Android Bluetooth Paired Devices
问题描述
我想创造的是，当pressed，presents的用户配对的蓝牙设备的列表连接到一个图像按钮。
不过，我得到设置不能被解析为一个变量##点1处， 和##点2处mArrayAdapber不能得到解决 （## 1 ## 2不属于code部分...）
我用从Android网站上的code，但在黑暗之中，我发现自己在黑暗中。
我倒是AP preciate一些指导...
//搜索
的ImageButton =的bsearch（的ImageButton）findViewById（R.id.Search）;
bSearch.setOnClickListener（新View.OnClickListener（）{
公共无效的onClick（视图查看）{
## 1套＆LT; BluetoothDevice类＆GT; pairedDevices = mBluetoothAdapter.getBondedDevices（）;
//如果有配对设备
如果（pairedDevices.size（）大于0）{
//循环配对设备
对于（BluetoothDevice类设备：pairedDevices）{
//添加姓名和地址到一个数组适配器在ListView显示
## 2mArrayAdapter.add（device.getName（）+\ N+ device.getAddress（））;
}
}
}
}）;
有关1），那么，如果你还没有这样做，添加
>进口为java.util.Set;
在你的import语句。这将解决设置错误。
有关2）声明和初始化
mArrayAdapter
例如，在你的活动做的：
私人ArrayAdapter＆LT;字符串＆GT; mArrayAdapter;
，然后上的onCreate：
mArrayAdapter =新的ArrayAdapter＆LT;字符串＆GT;（这一点，＆lt;您的布局文件＆gt;）;
然后它应该添加到ListView
//查找并设置在ListView为新发现的设备
的ListView newDevicesListView =（ListView控件）
findViewById（R.id.＆其中; layout_file＆GT）;
newDevicesListView.setAdapter（mArrayAdapter）;
newDevicesListView.setOnItemClickListener（mDeviceClickListener）;
请参照蓝牙聊天例如，从Android的例子。它应该帮助你得到去蓝牙API的
更新的评论：
如果你仔细看的BluetoothChat.java文件的BT例如，你会看到这个
公共无效onActivityResult（INT申请code，INT结果code，意图数据）{
如果（D）Log.d（TAG，onActivityResult+结果code）;
开关（要求code）{
案例REQUEST_CONNECT_DEVICE：
//当DeviceListActivity返回与设备连接
如果（结果code == Activity.RESULT_OK）{
//获取设备的MAC地址
字符串的地址= data.getExtras（）
.getString（DeviceListActivity.EXTRA_DEVICE_ADDRESS）;
//获取BluetoothDevice类对象
BluetoothDevice类设备= mBluetoothAdapter.getRemoteDevice（地址）;
//尝试连接到该设备
mChatService.connect（设备）;
}
打破;
案例REQUEST_ENABLE_BT：
//当请求启用蓝牙的回报
如果（结果code == Activity.RESULT_OK）{
//蓝牙已经启用，因此建立了一个聊天会话
setupChat（）;
} 其他 {
//用户没有启用蓝牙或发生错误
Log.d（TAG，BT不启用）;
Toast.makeText（这一点，R.string.bt_not_enabled_leaving，Toast.LENGTH_SHORT）.show（）;
完（）;
}
}
}
关注此行：
//尝试连接到该设备
mChatService.connect（设备）;
这个函数连接到蓝牙设备。第一次，它会问你自动配对。一旦配对，下一次它会自动连接到蓝牙设备。
I'm trying to create an image button that, when pressed, presents the users a list of Paired Bluetooth devices to connect to.
However, I get "Set cannot be resolved as a variable" at point ##1, and "mArrayAdapber cannot be resolved" at point ##2 (##1 and ##2 are not part of the code...)
I used the code from the Android site, but being in the dark, I find myself in the dark.
I'd appreciate some guidance...
//Search
ImageButton bSearch = (ImageButton) findViewById(R.id.Search);
bSearch.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
##1Set<BluetoothDevice> pairedDevices = mBluetoothAdapter.getBondedDevices();
// If there are paired devices
if (pairedDevices.size() > 0) {
// Loop through paired devices
for (BluetoothDevice device : pairedDevices) {
// Add the name and address to an array adapter to show in a ListView
##2mArrayAdapter.add(device.getName() + "\n" + device.getAddress());
}
}
}
});
For 1) Well if you haven't done so , add
> import java.util.Set;
in your import statements . This will resolve "Set" error.
For 2) Declare and initialize
mArrayAdapter
For example in your Activity do :
private ArrayAdapter<String> mArrayAdapter;
and then on onCreate:
mArrayAdapter= new ArrayAdapter<String>(this, <your layout file>);
which should then be added to a ListView
// Find and set up the ListView for newly discovered devices
ListView newDevicesListView = (ListView)
findViewById(R.id.<layout_file>);
newDevicesListView.setAdapter(mArrayAdapter);
newDevicesListView.setOnItemClickListener(mDeviceClickListener);
Refer to Bluetooth Chat example from Android examples. It should help you get going with the Bluetooth api's
Update on comment :
If you look closely on BluetoothChat.java file in BT example, you'll see this
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if(D) Log.d(TAG, "onActivityResult " + resultCode);
switch (requestCode) {
case REQUEST_CONNECT_DEVICE:
// When DeviceListActivity returns with a device to connect
if (resultCode == Activity.RESULT_OK) {
// Get the device MAC address
String address = data.getExtras()
.getString(DeviceListActivity.EXTRA_DEVICE_ADDRESS);
// Get the BLuetoothDevice object
BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
// Attempt to connect to the device
mChatService.connect(device);
}
break;
case REQUEST_ENABLE_BT:
// When the request to enable Bluetooth returns
if (resultCode == Activity.RESULT_OK) {
// Bluetooth is now enabled, so set up a chat session
setupChat();
} else {
// User did not enable Bluetooth or an error occured
Log.d(TAG, "BT not enabled");
Toast.makeText(this, R.string.bt_not_enabled_leaving, Toast.LENGTH_SHORT).show();
finish();
}
}
}
Watch this line :
// Attempt to connect to the device
mChatService.connect(device);
This function connects to bluetooth device. First time it'll ask you to pair it automatically. Once paired, next time it'll auto connect to the bluetooth device.
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