java更改蓝牙查询扫描时间
根据^{
这是我的MainActivity
:
package com.example.bluetoothsignal;
import 安卓.os.Bundle;
import 安卓.app.Activity;
import 安卓.bluetooth.BluetoothAdapter;
import 安卓.bluetooth.BluetoothDevice;
import 安卓.content.BroadcastReceiver;
import 安卓.content.Context;
import 安卓.content.Intent;
import 安卓.content.IntentFilter;
import 安卓.view.Menu;
import 安卓.widget.EditText;
public class MainActivity extends Activity {
private EditText statusText;
private BluetoothAdapter mBtAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
statusText = (EditText) findViewById(R.id.statusText);
statusText.setText("");
Intent discoverableIntent = new Intent(
BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
discoverableIntent.putExtra(
BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
startActivity(discoverableIntent);
IntentFilter localIntentFilter1 = new IntentFilter(
"安卓.bluetooth.device.action.FOUND");
registerReceiver(this.mReceiver, localIntentFilter1);
IntentFilter localIntentFilter2 = new IntentFilter(
"安卓.bluetooth.adapter.action.DISCOVERY_FINISHED");
registerReceiver(this.mReceiver, localIntentFilter2);
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(mReceiver, filter);
this.mBtAdapter = BluetoothAdapter.getDefaultAdapter();
this.mBtAdapter.startDiscovery();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
public void onReceive(Context paramContext, Intent paramIntent) {
String action = paramIntent.getAction();
if ("安卓.bluetooth.device.action.FOUND".equals(action)) {
BluetoothDevice localBluetoothDevice = (BluetoothDevice) paramIntent
.getParcelableExtra("安卓.bluetooth.device.extra.DEVICE");
int s = paramIntent.getIntExtra(
"安卓.bluetooth.device.extra.RSSI", -32768);
short s2 = paramIntent.getShortExtra(
"安卓.bluetooth.device.extra.RSSI", Short.MIN_VALUE);
int s1 = paramIntent.getIntExtra(BluetoothDevice.EXTRA_RSSI,
Integer.MIN_VALUE);
String state = localBluetoothDevice.getAddress() + "\n"
+ localBluetoothDevice.getName() + "\n" + s + "\n" + s1
+ "\n" + s2;
statusText.setText(statusText.getText().toString() + state);
} else if (BluetoothDevice.ACTION_FOUND.equals(action)) {
// Get the BluetoothDevice object from the Intent
BluetoothDevice device = paramIntent
.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
// Add the name and address to an array adapter to show in a
// ListView
statusText.setText(statusText.getText().toString()
+ device.getName() + "\n" + device.getAddress());
} else if (("安卓.bluetooth.adapter.action.DISCOVERY_FINISHED"
.equals(action))) {
if (MainActivity.this.mBtAdapter.isDiscovering()) {
MainActivity.this.mBtAdapter.cancelDiscovery();
}
statusText.setText("");
MainActivity.this.mBtAdapter.startDiscovery();
}
}
};
}
# 1 楼答案
如果你想连接到一个不知道完整地址的设备,你必须使用
BluetoothAdapter.startDiscovery()
进行完整的查找,并在收到的地址中搜索你想要的地址如果您知道要连接的设备的完整地址,可以使用
BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
直接连接到该设备因此,通过直接使用
.getRemoteDevice(address);
,您可以为扫描设备保存数据。而是直接连接例如:
然后
sock.connect();
等等。。希望你收到