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BLE: termux-bluetooth-scaninfo now can support bluetooth low energy scan
Signed-off-by: Steven Salazar <stevensalazarmolina@gmail.com>
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126 changes: 126 additions & 0 deletions
126
app/src/main/java/com/termux/api/BluetoothLowEnergyAPI.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| package com.termux.api; | ||
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| import android.bluetooth.BluetoothAdapter; | ||
| import android.bluetooth.BluetoothDevice; | ||
| import android.bluetooth.BluetoothManager; | ||
| import android.bluetooth.le.BluetoothLeScanner; | ||
| import android.bluetooth.le.ScanCallback; | ||
| import android.bluetooth.le.ScanResult; | ||
| import android.content.BroadcastReceiver; | ||
| import android.content.Context; | ||
| import android.content.Intent; | ||
| import android.content.IntentFilter; | ||
| import android.os.AsyncTask; | ||
| import android.util.JsonWriter; | ||
| import android.util.Log; | ||
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| import com.termux.MainActivity; | ||
| import com.termux.api.util.ResultReturner; | ||
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| import java.io.PrintWriter; | ||
| import java.util.HashSet; | ||
| import java.util.Set; | ||
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| public class BluetoothLowEnergyAPI { | ||
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| private static boolean scanning = false; | ||
| private static Set<String> deviceList = new HashSet<String>(); | ||
| public static BluetoothManager btManager; | ||
| public static BluetoothAdapter btAdapter; | ||
| public static BluetoothLeScanner btScanner; | ||
| public final static int REQUEST_ENABLE_BT = 1; | ||
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| // Device scan callback. | ||
| private static ScanCallback leScanCallback = new ScanCallback() { | ||
| @Override | ||
| public void onScanResult(int callbackType, ScanResult result) { | ||
| BluetoothDevice device = result.getDevice(); | ||
| if (device != null) { | ||
| String deviceName = device.getName(); | ||
| // you can get more info from device here | ||
| // ... | ||
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| if (deviceName != null && !deviceName.equals("null") && !deviceName.trim().equals("")) { | ||
| deviceList.add(deviceName); | ||
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| } | ||
| } | ||
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| } | ||
| }; | ||
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| static void onReceiveBluetoothScanInfo(TermuxApiReceiver apiReceiver, final Context context, final Intent intent) { | ||
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| ResultReturner.returnData(apiReceiver, intent, new ResultReturner.ResultJsonWriter() { | ||
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| @Override | ||
| public void writeJson(final JsonWriter out) throws Exception { | ||
| out.beginObject(); | ||
| if(!scanning) { | ||
| if(btManager==null) { | ||
| // stuff for BLE, you can move this in a init function inside BluetoothLowEnergyAPI | ||
| btManager = (BluetoothManager) MainActivity.activity.getSystemService(Context.BLUETOOTH_SERVICE); | ||
| if(btManager == null) Log.d("termux-bl","MANAGER IS NULL"); | ||
| btAdapter = btManager.getAdapter(); | ||
| if(btAdapter == null) Log.d("termux-bl","ADAPTER IS NULL"); | ||
| btScanner = btAdapter.getBluetoothLeScanner(); | ||
| if(btScanner == null) Log.d("termux-bl","SCANNER IS NULL"); | ||
| } | ||
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| // start scanning with a broadcast receiver | ||
| out.name("message").value("scanning ble devices, please type termux-bluetooth-scaninfo again to stop the scanning and print the results"); | ||
| scanning = true; | ||
| deviceList.clear(); | ||
| System.out.println("start scanning"); | ||
| AsyncTask.execute(new Runnable() { | ||
| @Override | ||
| public void run() { | ||
| btScanner.startScan(leScanCallback); | ||
| } | ||
| }); | ||
| } | ||
| else{ | ||
| System.out.println("stop scanning"); | ||
| AsyncTask.execute(new Runnable() { | ||
| @Override | ||
| public void run() { | ||
| btScanner.stopScan(leScanCallback); | ||
| } | ||
| }); | ||
| for(String s: deviceList) | ||
| out.name("device").value(s); | ||
| scanning =false; | ||
| } | ||
| out.endObject(); | ||
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| } | ||
| }); | ||
| } | ||
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| static void onReceiveBluetoothConnect(TermuxApiReceiver apiReceiver, final Context context, final Intent intent) { | ||
| // To be implemented, the idea is to receive the command 'termux-bluetooth-connect args' | ||
| // be careful to do not send only termux-bluetooth-connect without args because the termux-api-package didnt control 0 args so it will block | ||
| ResultReturner.returnData(apiReceiver, intent,new ResultReturner.WithStringInput(){ | ||
| @Override | ||
| public void writeResult(PrintWriter out) throws Exception { | ||
| try { | ||
| JsonWriter writer = new JsonWriter(out); | ||
| writer.setIndent(" "); | ||
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| if(inputString.equals("")) { | ||
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| writer.beginObject().name("message:").value("invalid input").endObject(); | ||
| }else | ||
| writer.beginObject().name("message:").value("BluetoothConnect to be implemented, it should connect to " + inputString).endObject(); | ||
| out.println(); // To add trailing newline. | ||
| }catch(Exception e){ | ||
| Log.d("Except BluetoothConnect", e.getMessage()); | ||
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| } | ||
| } | ||
| }); | ||
| } | ||
| } |
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