7
Bluetoothが6.01で動作していないようですが、Kitkat 4.4.4のupdate + appCompatのコードと権限で期待通りに動作していないようです。Android Marshmallow 6.0.1 Bluetoothスキャン結果が返されない
返される結果はありません。また、近くに複数の発見可能なデバイスがあります。
誰もがなぜそのような洞察力を持っていますか？私はあなたがMarshmallowいるので、あなたがあなたの仕事のためにこれらの権限が必要であることを知っているネクサス上5
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
package bluetoothscanneractivity;
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.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
import java.util.ArrayList;
public class BluetoothScannerActivity extends Activity {
//private final BroadcastReceiver FoundReceiver = null;
protected ArrayList<BluetoothDevice> foundDevices = new ArrayList<BluetoothDevice>();
private ListView foundDevicesListView;
private ArrayAdapter<BluetoothDevice> btArrayAdapter;
/**
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_bluetooth_scanner);
final BluetoothAdapter myBlueToothAdapter = BluetoothAdapter.getDefaultAdapter();
final Button scanb = (Button) findViewById(R.id.button);
final ListView foundDevicesListView = (ListView) findViewById(R.id.listView1);
btArrayAdapter = new ArrayAdapter<BluetoothDevice>(this,
android.R.layout.simple_list_item_1, foundDevices);
foundDevicesListView.setAdapter(btArrayAdapter);
//Turn on Bluetooth
if (myBlueToothAdapter == null)
Toast.makeText(BluetoothScannerActivity.this, "Your device doesnot support Bluetooth", Toast.LENGTH_LONG).show();
else if (!myBlueToothAdapter.isEnabled()) {
Intent BtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(BtIntent, 0);
Toast.makeText(BluetoothScannerActivity.this, "Turning on Bluetooth", Toast.LENGTH_LONG).show();
}
//scan
scanb.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
btArrayAdapter.clear();
myBlueToothAdapter.startDiscovery();
Toast.makeText(BluetoothScannerActivity.this, "Scanning Devices", Toast.LENGTH_LONG).show();
}
});
registerReceiver(FoundReceiver, new IntentFilter(BluetoothDevice.ACTION_FOUND));
IntentFilter filter = new IntentFilter(
BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
this.registerReceiver(FoundReceiver, filter);
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
unregisterReceiver(FoundReceiver);
}
private final BroadcastReceiver FoundReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
// When discovery finds a new device
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
// Get the BluetoothDevice object from the Intent
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
if (!foundDevices.contains(device)) {
foundDevices.add(device);
btArrayAdapter.notifyDataSetChanged();
}
}
// When discovery cycle finished
if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
if (foundDevices == null || foundDevices.isEmpty()) {
Toast.makeText(BluetoothScannerActivity.this, "No Devices", Toast.LENGTH_LONG).show();
}
}
}
};
}
startDiscovery（）メソッドのコードを貼り付けてください。 –
標準のAndroid BLコールである必要はありません。 – mcdoomington
あなたはtoast-toast.makeText（BluetoothScannerActivity.this、 "Scanning Devices"、Toast.LENGTH_LONG）.show（）を見ることができますか？ –