我一直在尝试开发可与RFID读取器集成的应用程序（我正在使用1128 UHF RFID读取器）。我最近尝试学习如何在android studio中使用蓝牙，我创建了一个简单的应用程序，可以打开蓝牙，查找设备并与之配对。但是我无法与RFID阅读器配对。我是android编程的新手，所以不确定如何正确进行编程。
这是我的代码：
package com.siscaproject.sisca.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.Handler;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.SwitchCompat;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import com.siscaproject.sisca.Adapter.BluetoothListAdapter;
import com.siscaproject.sisca.R;
import java.util.ArrayList;
import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnCheckedChanged;
public class HomeActivity extends AppCompatActivity{
private static final String TAG = "HomeActivity";
private BluetoothAdapter mBluetoothAdapter;
private BroadcastReceiver mBroadcastReceiver1 = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if(action.equals(mBluetoothAdapter.ACTION_STATE_CHANGED)){
final int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, mBluetoothAdapter.ERROR);
switch(state){
case BluetoothAdapter.STATE_OFF:
Log.d(TAG, "onReceive: STATE OFF");
break;
case BluetoothAdapter.STATE_TURNING_OFF:
Log.d(TAG, "onReceive: STATE TURNING OFF");
break;
case BluetoothAdapter.STATE_ON:
Log.d(TAG, "onReceive: STATE ON");
break;
case BluetoothAdapter.STATE_TURNING_ON:
Log.d(TAG, "onReceive: STATE TURNING ON");
break;
}
}
}
};
private BroadcastReceiver mBroadcastReceiver2 = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
Log.d(TAG, "onReceive: ACTION FOUND");
if(action.equals(BluetoothDevice.ACTION_FOUND)){
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
// Yang dimasukin ke arraylist cuma BluetoothClass 1f00
if(device.getBluetoothClass().toString().equals("1f00")){
listDevice.add(device);
}
Log.d(TAG, "onReceive: " + device.getName() + ", " + device.getAddress());
rv_list_device.setHasFixedSize(true);
rv_list_device.setLayoutManager(new LinearLayoutManager(getApplicationContext()));
BluetoothListAdapter listAdapter = new BluetoothListAdapter(listDevice,
HomeActivity.this, mBluetoothAdapter);
rv_list_device.setAdapter(listAdapter);
}
}
};
private BroadcastReceiver mBroadcastReceiver3 = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if(action.equals(BluetoothDevice.ACTION_BOND_STATE_CHANGED)){
BluetoothDevice mDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
if(mDevice.getBondState() == BluetoothDevice.BOND_BONDED){
Log.d(TAG, "BroadcastReceiver: BOND BONDED");
}
else if(mDevice.getBondState() == BluetoothDevice.BOND_BONDING){
Log.d(TAG, "BroadcastReceiver: BOND BONDING");
}
else if(mDevice.getBondState() == BluetoothDevice.BOND_NONE){
Log.d(TAG, "BroadcastReceiver: BOND NONE");
}
}
}
};
@BindView(R.id.sw_bluetooth) SwitchCompat sw_bluetooth;
@BindView(R.id.rv_list_device) RecyclerView rv_list_device;
@BindView(R.id.srl_list_parent) SwipeRefreshLayout srl_list_parent;
@BindView(R.id.tv_btWarning) TextView tv_btWarning;
private BluetoothListAdapter rvAdapter;
private ArrayList<BluetoothDevice> listDevice;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
ButterKnife.bind(this);
rv_list_device.setHasFixedSize(true);
rv_list_device.setLayoutManager(new LinearLayoutManager(this));
rvAdapter = new BluetoothListAdapter(listDevice, HomeActivity.this, mBluetoothAdapter);
rv_list_device.setAdapter(rvAdapter);
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_BOND_STATE_CHANGED);
registerReceiver(mBroadcastReceiver3, filter);
listDevice = new ArrayList<>();
srl_list_parent.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
refreshDevice();
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
srl_list_parent.setRefreshing(false);
mBluetoothAdapter.cancelDiscovery();
Log.d(TAG, "onRefresh: Canceling discovery");
}
}, 20000);
}
});
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
initialSwitch();
}
private void initialSwitch(){
if(mBluetoothAdapter.isEnabled()){
sw_bluetooth.setChecked(true);
srl_list_parent.setVisibility(View.VISIBLE);
tv_btWarning.setVisibility(View.GONE);
}else if(!mBluetoothAdapter.isEnabled()){
sw_bluetooth.setChecked(false);
srl_list_parent.setVisibility(View.GONE);
tv_btWarning.setVisibility(View.VISIBLE);
}
}
public void refreshDevice(){
listDevice.clear();
Log.d(TAG, "refreshDevice: Looking for unpaired devices");
if(mBluetoothAdapter.isDiscovering()){
mBluetoothAdapter.cancelDiscovery();
Log.d(TAG, "refreshDevice: Canceling discovery");
mBluetoothAdapter.startDiscovery();
IntentFilter discoverDevicesIntent = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(mBroadcastReceiver2, discoverDevicesIntent);
}
else if(!mBluetoothAdapter.isDiscovering()){
mBluetoothAdapter.startDiscovery();
IntentFilter discoverDevicesIntent = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(mBroadcastReceiver2, discoverDevicesIntent);
}
}
@Override
protected void onDestroy() {
Log.d(TAG, "onDestroy: called");
super.onDestroy();
try {
if(mBroadcastReceiver1 != null){
unregisterReceiver(mBroadcastReceiver1);
mBroadcastReceiver1 = null;
}
}catch(RuntimeException e){
Log.e(TAG, e.getMessage());
}
try {
if(mBroadcastReceiver2 != null){
unregisterReceiver(mBroadcastReceiver2);
mBroadcastReceiver2 = null;
}
}catch(RuntimeException e){
Log.e(TAG, e.getMessage());
}
try {
if(mBroadcastReceiver3 != null){
unregisterReceiver(mBroadcastReceiver3);
mBroadcastReceiver3 = null;
}
}catch(RuntimeException e){
Log.e(TAG, e.getMessage());
}
finish();
}
@OnCheckedChanged({R.id.sw_bluetooth})
public void onSwitch(){
Log.d(TAG, "onSwitch: enabling/disabling bluetooth");
if(sw_bluetooth.isChecked() == true){
Log.d(TAG, "enableDisableBluetooth: enabling bluetooth");
srl_list_parent.setVisibility(View.VISIBLE);
tv_btWarning.setVisibility(View.GONE);
mBluetoothAdapter.enable();
IntentFilter BTIntent = new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED);
registerReceiver(mBroadcastReceiver1, BTIntent);
}
else if(sw_bluetooth.isChecked() == false){
Log.d(TAG, "enableDisableBluetooth: disabling bluetooth");
mBluetoothAdapter.disable();
srl_list_parent.setVisibility(View.GONE);
tv_btWarning.setVisibility(View.VISIBLE);
listDevice.clear();
IntentFilter BTIntent = new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED);
registerReceiver(mBroadcastReceiver1, BTIntent);
}
else if(mBluetoothAdapter == null){
Log.d(TAG, "enableDisableBluetooth: Doesn't have BT capabilities");
}
}
}
我可以找到我的RFID读取器设备（它显示在列表中），但是我无法将其配对。我已经搜索了如何执行此操作，但似乎找不到该操作的方法。