蓝牙设备自动链接

app/src/main/java/com/iflytop/profilometer/MainActivity.java

@@ -41,6 +41,7 @@ public class MainActivity extends AppCompatActivity {
         webView.getSettings().setJavaScriptEnabled(true);
         webView.getSettings().setDomStorageEnabled(true);
         webView.getSettings().setUseWideViewPort(true);
+        webView.getSettings().setMediaPlaybackRequiresUserGesture(false);
 //        webView.loadUrl("http://127.0.0.1:8080/");
         webView.loadUrl("http://192.168.1.112:3000/");
 

app/src/main/java/com/iflytop/profilometer/core/bluetooth/BleManager.java

@@ -1,5 +1,7 @@
 package com.iflytop.profilometer.core.bluetooth;
 
+import static android.content.Context.MODE_PRIVATE;
+
 import android.Manifest;
 import android.annotation.SuppressLint;
 import android.app.Activity;
@@ -16,6 +18,7 @@ import android.bluetooth.le.BluetoothLeScanner;
 import android.bluetooth.le.ScanCallback;
 import android.bluetooth.le.ScanResult;
 import android.content.Context;
+import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.os.Build;
 import android.os.Handler;
@@ -293,6 +296,7 @@ public class BleManager {
 
     /**
      * 开始扫描 BLE 设备，扫描到的每个设备均依次连接进行服务查询。
+     * 如果扫描到的设备其 MAC 地址与存储的地址一致，则自动调用 connectToDevice() 进行连接。
      */
     @SuppressLint("MissingPermission")
     public void startScan() {
@@ -318,12 +322,23 @@ public class BleManager {
             @Override
             public void onScanResult(int callbackType, ScanResult result) {
                 BluetoothDevice device = result.getDevice();
+                // 仅处理设备名非空的设备
                 if (device != null && device.getName() != null) {
                     if (result.getScanRecord() != null) {
                         deviceLastSeenMap.put(device, System.currentTimeMillis());
                     }
                     String address = device.getAddress();
-                    // 如果该设备已经处理过，则跳过连接
+                    // 先检查存储的 MAC 地址，若匹配则自动连接
+                    SharedPreferences prefs = context.getSharedPreferences("profilometer", MODE_PRIVATE);
+                    String storedMac = prefs.getString("mac_address", null);
+                    if (storedMac != null && storedMac.equals(address)) {
+                        if (!isConnected()) {
+                            connectToDevice(address);
+                        }
+                        processedDevices.add(address);
+                        return;
+                    }
+                    // 避免重复处理
                     if (processedDevices.contains(address)) {
                         return;
                     }
@@ -331,18 +346,27 @@ public class BleManager {
                     // 对扫描到的设备进行连接，查询服务
                     device.connectGatt(context, false, new ServiceDiscoveryGattCallback(device));
                 }
-
             }
 
             @Override
             public void onBatchScanResults(List<ScanResult> results) {
                 for (ScanResult result : results) {
                     BluetoothDevice device = result.getDevice();
-                    if(device != null && device.getName() != null){
+                    if (device != null && device.getName() != null) {
                         if (result.getScanRecord() != null) {
                             deviceLastSeenMap.put(device, System.currentTimeMillis());
                         }
                         String address = device.getAddress();
+                        // 检查存储的 MAC 地址
+                        SharedPreferences prefs = context.getSharedPreferences("profilometer", MODE_PRIVATE);
+                        String storedMac = prefs.getString("mac_address", null);
+                        if (storedMac != null && storedMac.equals(address)) {
+                            if (!isConnected()) {
+                                connectToDevice(address);
+                            }
+                            processedDevices.add(address);
+                            continue;
+                        }
                         if (processedDevices.contains(address)) {
                             continue;
                         }
@@ -427,6 +451,11 @@ public class BleManager {
             channel.setDeviceOnReportListener(new BleDeviceListener());
             DeviceState deviceState = SystemService.getInstance().getDeviceState();
             deviceState.setConnected(true);
+
+            SharedPreferences prefs = context.getSharedPreferences("profilometer", MODE_PRIVATE);
+            SharedPreferences.Editor editor = prefs.edit();
+            editor.putString("mac_address", macAddress);
+            editor.apply();
         } catch (IllegalArgumentException e) {
             Log.e(TAG, "无效的 MAC 地址: " + macAddress, e);
         }
@@ -469,6 +498,12 @@ public class BleManager {
             bluetoothGatt = null;
             DeviceState deviceState = SystemService.getInstance().getDeviceState();
             deviceState.setConnected(false);
+
+            SharedPreferences prefs = context.getSharedPreferences("profilometer", MODE_PRIVATE);
+            SharedPreferences.Editor editor = prefs.edit();
+            editor.remove("mac_address");
+            editor.apply();
+
             Log.d(TAG, "当前蓝牙设备已断开连接");
         }
     }