我是Android开发的新手。我创建了一个蓝牙应用程序,用于从我的应用程序向另一台设备发送图像。 首先我从图库加载图像并使用此uri将该图像发送到远程设备。并使用搜索按钮搜索可见设备,这是可见的列表视图。 我的问题是,当我点击列表视图(远程设备地址)时,远程设备无法配对,也没有发送图像。请帮助我谢谢...`
我的xml布局文件:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button
android:id="@+id/button_search"
android:text="Search for listener"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_above="@id/text_message"
/>
<Button
android:id="@+id/btnidOpenGallery"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_above="@+id/button_listen"
android:text="OpenGallery" />
<ListView
android:id="@+id/list_discovered"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@id/btnidOpenGallery"
android:layout_alignParentTop="true"
/>
</RelativeLayout>
我的主要活动:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btnOpenimage=(Button)findViewById(R.id.btnidOpenGallery);
OpenImage();
foundDevices = new ArrayList<BluetoothDevice>();
configureBluetooth();
setupListView();
}
private void configureBluetooth() {
bluetooth = BluetoothAdapter.getDefaultAdapter();
}
private void OpenImage() {
btnOpenimage.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_PICK);
startActivityForResult(Intent.createChooser(intent,
"Select Picture"), SELECT_PICTURE);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(requestCode==2) {
selectedImageUri = data.getData();
}
}
private void setupSearchButton() {
Button searchButton = (Button) findViewById(R.id.button_search);
searchButton.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
registerReceiver(discoveryResult, new IntentFilter(
BluetoothDevice.ACTION_FOUND));
if (!bluetooth.isDiscovering()) {
foundDevices.clear();
bluetooth.startDiscovery();
}
}
});
}
private void setupListView() {
list = (ListView) findViewById(R.id.list_discovered);
aa = new ArrayAdapter<BluetoothDevice>(this,
android.R.layout.simple_list_item_1, foundDevices);
list.setAdapter(aa);
list.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View view, int index,
long arg3) {
AsyncTask<Integer, Void, Void> connectTask = new AsyncTask<Integer, Void, Void>() {
@Override
protected Void doInBackground(Integer... params) {
try {
BluetoothDevice device = foundDevices
.get(params[0]);
socket = device
.createRfcommSocketToServiceRecord(uuid);
socket.connect();
} catch (IOException e) {
Log.d("BLUETOOTH_CLIENT", e.getMessage());
}
return null;
}
@Override
protected void onPostExecute(Void result) {
//switchUI();
try {
sendFile(selectedImageUri, socket);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
connectTask.execute(index);
}
});
}
public void sendFile(Uri uri, BluetoothSocket bs) throws IOException {
BufferedInputStream bis = new BufferedInputStream(getContentResolver().openInputStream(uri));
OutputStream os = bs.getOutputStream();
try {
int bufferSize = 1024;
byte[] buffer = new byte[bufferSize];
// we need to know how may bytes were read to write them to the byteBuffer
int len = 0;
while ((len = bis.read(buffer)) != -1) {
os.write(buffer, 0, len);
}
} finally {
bis.close();
os.flush();
os.close();
bs.close();
}
}