我正在做一个蓝牙项目，我想在 Android 中以编程方式配对两个蓝牙设备。我在 Android 中使用默认 api。它正在寻找设备。但不返回 Action_found 意图。在检查 action_found 意图的条件时，它返回 false。但在 logcat 中，它显示找到的设备地址。这是我尝试过的示例代码。
package com.qburst.android.settingsmanager.view;
import java.util.ArrayList;
import java.util.Set;
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.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Toast;
public class Bluetooth extends Activity {
protected static final int REQUEST_ENABLE_BT = 1;
private View mBluetooth;
private Button mOnButton;
private Button mActiveDevices;
private Button mDiscoverable;
public ArrayAdapter<String> mArrayAdapter;
public BluetoothAdapter mBluetoothAdapter;
ArrayList<String> devices = new ArrayList<String>();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.bluetooth);
mOnButton = (Button) findViewById(R.id.on_button);
mActiveDevices = (Button) findViewById(R.id.active_devices);
mDiscoverable = (Button) findViewById(R.id.discoverable_button);
mArrayAdapter = new ArrayAdapter<String>(this, R.layout.main);
IntentFilter filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
registerReceiver(mReceiver, filter);
mOnButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (mBluetoothAdapter == null) {
// Device does not support Bluetooth
}
if (!mBluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
}
});
mActiveDevices.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Set<BluetoothDevice> pairedDevices = mBluetoothAdapter.getBondedDevices();
System.out.println("checking paired devices");
// If there are paired devices
if (pairedDevices.size() > 0) {
System.out.println(" paired devices");
// Loop through paired devices
for (BluetoothDevice device : pairedDevices) {
// Add the name and address to an array adapter to show in a ListView
mArrayAdapter.add(device.getName() + "\n" + device.getAddress());
}
}else {
mBluetoothAdapter.startDiscovery();
}
}
});
mDiscoverable.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent discoverableIntent = new
Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
startActivity(discoverableIntent);
}
});
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case REQUEST_ENABLE_BT:
// When the request to enable Bluetooth returns
if (resultCode == Activity.RESULT_OK) {
Toast.makeText(this, "Bluetooth enebled", Toast.LENGTH_SHORT).show();
} else {
// User did not enable Bluetooth or an error occurred
Toast.makeText(this, "Bluetooth not enebled", Toast.LENGTH_SHORT).show();
finish();
}
}
}
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
devices.add(device.getName());
devices.add(device.getAddress());
System.out.println(devices);
// When discovery finds a device
Log.i("receiver","Inside receiver");
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
System.out.println("device found");
Toast.makeText(getBaseContext(), "No device found",Toast.LENGTH_LONG);
// Get the BluetoothDevice object from the Intent
//BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
// Add the name and address to an array adapter to show in a ListView
System.out.println(device.getName());
devices.add(device.getName());
devices.add(device.getAddress());
mArrayAdapter.add(device.getName() + "\n" + device.getAddress());
System.out.println(devices);
}
}
};
// Register the BroadcastReceiver
// Don't forget to unregister during onDestroy
@Override
protected void onDestroy() {
super.onDestroy();
}
}