我正在尝试通过查询天蓝色来获取值！之后，我想尝试获取这些值并转向新的意图，但由于线程，我不知道如何做到这一点
在这里我开始QrCode找到id我需要的
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.qrcode_activity);
cameraPreview = findViewById(R.id.cameraPreview);
txtResult = findViewById(R.id.txtresult);
barcodeDetector = new BarcodeDetector.Builder(this).
setBarcodeFormats(Barcode.QR_CODE).build();
cameraSource = new CameraSource.Builder(getApplicationContext(), barcodeDetector)
.setRequestedPreviewSize(640, 480).build();
intent = new Intent(getBaseContext(), ValuesActivity.class);
barcodeDetector.setProcessor(new Detector.Processor<Barcode>() {
@Override
public void release() {
}
@Override
public void receiveDetections(Detector.Detections<Barcode> detections) {
final SparseArray<Barcode> qrcodes = detections.getDetectedItems();
if(qrcodes.size() != 0)
{
txtResult.post(new Runnable() {
@Override
public void run() {
//Create vibrate
Vibrator vibrator = (Vibrator)getApplicationContext().getSystemService(Context.VIBRATOR_SERVICE);
vibrator.vibrate(100);
_idDevice = qrcodes.valueAt(0).displayValue;
txtResult.setText(qrcodes.valueAt(0).displayValue);
getQuery();
}
});
}
}
});
cameraPreview.getHolder().addCallback(new SurfaceHolder.Callback() {
@Override
public void surfaceCreated(SurfaceHolder holder) {
if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
ActivityCompat.requestPermissions(QrCodeActivity.this, new String[]{Manifest.permission.CAMERA},RequestCameraPermissionID);
return;
}
try {
cameraSource.start(cameraPreview.getHolder());
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
cameraSource.stop();
}
});
}
这是我进行查询的地方，但是，正如我所说，runUIThread我无法从该线程访问变量以进行另一次尝试。如你看到的：
public void getQuery(){
try
{
final ProgressDialog dialog = ProgressDialog.show(QrCodeActivity.this, "", "Loading. Please wait...", true);
Query query = Query.Companion.select()
.from("Equipment")
.where("deviceId", "Box2");
AzureData.queryDocuments("Equipment", "valuesDatabase", query, DictionaryDocument.class,null, onCallback( response -> {
Log.e(TAG, "Document list result: " + response.isSuccessful());
idnomes = new ArrayList<>();
listaValues = new ArrayList<>();
listaValuesSensor = new HashMap<>();
datasAlertas = new ArrayList<>();
runOnUiThread(() -> {
int i = 0;
for( Document d : response.getResource().getItems()){
if(response.getResource().getItems().get(i).get("deviceId").equals("Box2")) {
Object alert = response.getResource().getItems().get(i).get("alert");
Object valueSensor = response.getResource().getItems().get(i).get("value");
Object datavalor = response.getResource().getItems().get(i).get("data");
i++;
if(listaValuesSensor.isEmpty()){
listaValues.add(Integer.valueOf(valueSensor.toString()));
listaValuesSensor.put(alert.toString(),listaValues );
datasAlertas.add(datavalor.toString());
}else{
if(listaValuesSensor.containsKey(alert.toString())){
ArrayList<Integer> o = listaValuesSensor.get(alert.toString());
o.add(Integer.valueOf(valueSensor.toString()));
listaValuesSensor.put(alert.toString(),o );
datasAlertas.add(datavalor.toString());
}else{
listaValues = new ArrayList<>();
listaValues.add(Integer.valueOf(valueSensor.toString()));
listaValuesSensor.put(alert.toString(), listaValues);
datasAlertas.add(datavalor.toString());
}
}
if(!idnomes.contains(alert.toString())) {
d.setId(alert.toString());
idnomes.add(alert.toString());
}
}
dialog.cancel();
}
});
Intent i = new Intent(getApplicationContext(),ValuesActivity.class);
intent.putExtra("id_equipamento", "Box2");
//intent.putExtra("listaValuesSensor", listaValuesSensor.get(coll.getId()).toString());
intent.putExtra("listaValuesSensor", listaValuesSensor);
intent.putExtra("dataValues", datasAlertas);
startActivity(i);
}));
}
catch (Exception ex) {
ex.printStackTrace();
}
}
}