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| == Introduction ==
| | {{Migrating|https://smartpossdk.gitbook.io/cloudpossdk/faq/usb-serial-port/accessory-agent-service-d22-q3}} |
| D22 can connect with Q3 via USB cable. The D22 works in master mode and the Q3 works in slave mode. By the helping of the AccessoryConnectionAgent apk, the application in two terminals can send Intent to any other application in another terminal.
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| == User Manual ==
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| [http://ftp.wizarpos.com/advanceSDK/AccessoryConnectAgentusermanual.pdf Accessory Connection Agent service user manual]
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| == Demo ==
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| Demo for APK developing.
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| [http://ftp.wizarpos.com/advanceSDK/AccessoryAgentDemo.zip Demo]
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| [http://ftp.wizarpos.com/advanceSDK/AccessoryConnectionAgentDemo.apk APK for testing, after install and run it, it will send intent through by the USB connection to the other device, to start the merchant self test apk]
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| '''Sender snippet code:'''
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| <syntaxhighlight lang="java">
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| @Override
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| protected void onCreate(Bundle savedInstanceState) {
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| super.onCreate(savedInstanceState);
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| setContentView(R.layout.activity_main);
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| initView();
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| bindServer();
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| }
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| private void initView() {
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| bindServerStatus = findViewById(R.id.bindServerStatus);
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| startActivity = findViewById(R.id.startActivity);
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| String json ="{\n" +
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| " \"action\": \"android.intent.action.MAIN\",\n" +
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| " \"className\": \"com.wizarpos.accessoryreceiveintentdemo.MainActivity\",\n" +
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| " \"flags\": 268435456,\n" +
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| " \"packageName\": \"com.wizarpos.accessoryreceiveintentdemo\",\n" +
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| " \"putExtra\": {\n" +
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| " \"extraData\": \"10\"\n" +
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| " }\n" +
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| "}";
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| startActivity.setOnClickListener(v -> {
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| if(remoteServe != null){
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| try {
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| remoteServe.remoteIntent(json);
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| } catch (RemoteException e) {
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| throw new RuntimeException(e);
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| }
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| }else {
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| Toast.makeText(this, "The AIDL service is disconnected", Toast.LENGTH_SHORT).show();
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| }
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| });
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| }
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| private void bindServer() {
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| Intent intent = new Intent();
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| ComponentName componentName =new ComponentName(INTENT_PACKAGE, INTENT_ACTION);
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| intent.setComponent(componentName);
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| bindService(intent, mServiceConnection, BIND_AUTO_CREATE);
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| }
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| ServiceConnection mServiceConnection = new ServiceConnection() {
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| @Override
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| public void onServiceConnected(ComponentName name, IBinder service) {
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| remoteServe = IRemoteAccessoryApi.Stub.asInterface(service);
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| bindServerStatus.setText("The AIDL service is Connected");
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| }
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| @Override
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| public void onServiceDisconnected(ComponentName name) {
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| remoteServe = null;
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| bindServerStatus.setText("The AIDL service is disconnected");
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| }
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| };
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| @Override
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| protected void onDestroy() {
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| super.onDestroy();
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| unbindService(mServiceConnection);
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| }
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| </syntaxhighlight>
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| '''Receiver(com.wizarpos.accessoryreceiveintentdemo) snippet code:'''
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| <syntaxhighlight lang="java">
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| @Override
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| protected void onCreate(Bundle savedInstanceState) {
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| super.onCreate(savedInstanceState);
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| setContentView(R.layout.activity_main);
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| //Receive intent data
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| String extraData = getIntent().getStringExtra("extraData");
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| }
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| @Override
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| protected void onNewIntent(Intent intent) {
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| super.onNewIntent(intent);
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| //Receive intent data
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| String extraData = intent.getStringExtra("extraData");
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| }
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| </syntaxhighlight>
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| == AccessoryConnectionAgent Service APK ==
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| By default, the AccessoryConnectAgent is included in the D22 and Q3 FW. But it maybe not exists in the old FW, so the developer should install the agent by themselves.
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| Here is the agent apk:
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| [http://ftp.wizarpos.com/advanceSDK/AccessoryAgentHostService-master-release-v1.0.22-r20230825095655-q1_platform.apk Connection Agent APK]
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| == Init USB Connection Mode in Development==
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| By default, the AccessoryConnectionAgent is disabled, the developer can use this apk to enable it.<br>
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| For the production FW, the agent will be initialized before releasing from factory.
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| Please download and install to D22 and Q3.
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| [http://ftp.wizarpos.com/advanceSDK/InitConnectionMode.apk Initialize Initialize APK]
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| * Selection Mode
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| in Q3, default is slave, other devcies default is master mode.
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| * Usbchannel Switch
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| enable or disable the Accessory Connection Agent service
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