绑定服务总是在我的项目的一部分中返回false ...我有2个需要连接到服务以推断某些数据的类，第一个类没有问题地连接，而第二个类可以工作具有相同的socketService，并且应该以不起作用的相同方式进行连接，bindService始终返回false。
这是我上课时遇到的问题：
@Override
public void onData(ScanDataCollection scanDataCollection) {
// Process the scanned data in a background thread using AsyncTask
new AsyncDataUpdate().execute(scanDataCollection);
Intent mIntent = new Intent(this,SocketService.class);
bindService(mIntent, mConnection, Context.BIND_AUTO_CREATE);
}
这是所有类：
package com.app.test;
import android.app.DialogFragment;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.graphics.Color;
import android.graphics.drawable.GradientDrawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.StrictMode;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.PopupMenu;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import com.symbol.emdk.EMDKManager;
import com.symbol.emdk.EMDKManager.EMDKListener;
import com.symbol.emdk.EMDKResults;
import com.symbol.emdk.ProfileManager;
import com.symbol.emdk.barcode.BarcodeManager;
import com.symbol.emdk.barcode.ScanDataCollection;
import com.symbol.emdk.barcode.Scanner;
import com.symbol.emdk.barcode.Scanner.DataListener;
import com.symbol.emdk.barcode.Scanner.StatusListener;
import com.symbol.emdk.barcode.ScannerConfig;
import com.symbol.emdk.barcode.ScannerException;
import com.symbol.emdk.barcode.ScannerInfo;
import com.symbol.emdk.barcode.ScannerResults;
import com.symbol.emdk.barcode.StatusData;
import org.json.JSONArray;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.lang.Object;
import com.app.test.SocketService.*;
public class Barcode extends AppCompatActivity implements EMDKListener, StatusListener, DataListener, DialogoEdit.ExampleDialogListener {
private static ArrayList<String> aBarcode;
public String cJson;
private Button mIndietroBtn;
private String profileName = "farma";
private ProfileManager profileManager = null;
private EMDKManager emdkManager = null;
private String cDati;
boolean mBounded;
private Handler handler;
private String TAG = "BARCODE ";
private String cProdotto;
private ImageButton mButtonMenu;
private String cPopup;
//private TextView textBarcode;
// public static Barcode myTabLayout;
private String lblScanString;
private ImageButton btnAdd;
private ImageButton imgRem;
private ImageButton imgEdit;
private ImageButton imgProd;
private String txtMinsan;
private String cServerMsg = "";
final Context context = this;
private TextView view;
private static ArrayList<String> aProdotto;
private static final String CHECK_ROTAZIONE = "rotazione";
private static final String STATE_ITEMS = "items";
private static ArrayAdapter<String> lblScanData;
private String triggerString = "SOFT";
Map<String, String> map = new HashMap<String, String>();
private BarcodeManager barcodeManager = null;
private TextView textViewStatus = null;
private Scanner scanner = null;
private Spinner spinnerScannerDevices = null;
private TextView outputNome;
private String outputMinsan;
private List<String> listaM = new ArrayList<>();
public SocketService s;
private List<ScannerInfo> deviceList = null;
private ArrayAdapter<String> arrayAdapter;
public String cChiave;
private TextView rigaProd = null;
private String result;
private String test;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
getSupportActionBar().hide();
setContentView(R.layout.barcode);
EMDKResults results = EMDKManager.getEMDKManager(getApplicationContext(), this);
if (results.statusCode != EMDKResults.STATUS_CODE.SUCCESS) {
Log.i("Status: ", "EMDKManager object request failed!");
}
Bundle bundle = this.getIntent().getExtras();
cChiave = bundle.getString("cerca");
cJson = bundle.getString("Json");
bundle.putString("Json", cJson);
outputNome = findViewById(R.id.textBarcode);
rigaProd = findViewById(R.id.lblScanData);
arrayAdapter = new ArrayAdapter(this, R.layout.rowbarcode, R.id.lblScanData, listaM);
ListView lv = findViewById(R.id.listaProd);
lv.setAdapter(arrayAdapter);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String riga = (String) parent.getItemAtPosition(position);
Toast.makeText(getApplicationContext(), riga, Toast.LENGTH_SHORT).show();
}
});
Handler handler = new ResultBarcode();
MyThread thr = new MyThread(handler);
thr.start();
btnAdd = this.findViewById(R.id.btnAdd);
btnAdd.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
btnCliccato();
}
});
aBarcode = new ArrayList<String>();
LinearLayout bgProd = (LinearLayout) findViewById(R.id.barcode);
bgProd.setBackgroundColor(Color.parseColor(TabLogin.bgColor));
// cambiando il background perdiamo il corner radius, quindi dobbiamo rimetterlo
GradientDrawable gd = new GradientDrawable();
gd.setColor(Color.parseColor(TabLogin.tvBgColor));
gd.setCornerRadius(7);
gd.setStroke(1, Color.parseColor("#C0C0C0"));
TextView outputPezzi = findViewById(R.id.testo_pz);
outputPezzi.setText(map.get("C111"));
outputPezzi.setTextColor(Color.parseColor(TabLogin.tvFgColor));
addScanButtonListener();
mButtonMenu = TabLogin.myTabLayout.findViewById(R.id.altro);
mButtonMenu.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final PopupMenu dropDownMenu = new PopupMenu(Barcode.this, mButtonMenu);
dropDownMenu.getMenuInflater()
.inflate(R.menu.barcode_nav, dropDownMenu.getMenu());
dropDownMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
public boolean onMenuItemClick(MenuItem item) {
int id = item.getItemId();
switch (id) {
case R.id.modGiac:
break;
case R.id.spOrd:
break;
case R.id.rInt:
break;
case R.id.vendita:
break;
case R.id.scProd:
break;
case R.id.delProd:
SvuotaElenco();
break;
case R.id.exit:
Chiudi();
break;
}
return Barcode.super.onMenuItemSelected(id, item);
}
});
dropDownMenu.show(); //showing popup menu
}
});
mIndietroBtn = TabLogin.myTabLayout.findViewById(R.id.resultback_tit);
mIndietroBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i = new Intent(Barcode.this, TabLogin.class);
Bundle bundle = new Bundle();
bundle.putString("Json", cJson);
i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
i.putExtras(bundle);
startActivity(i);
finish();
}
});
IntentFilter filter = new IntentFilter();
filter.addCategory(Intent.CATEGORY_DEFAULT);
filter.addAction(getResources().getString(R.string.dw_action));
registerReceiver(myBroadcastReceiver, filter);
imgRem = findViewById(R.id.imgRem);
imgRem.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(Barcode.this, "test", Toast.LENGTH_SHORT).show();
}
});
imgEdit = findViewById(R.id.imgEdit);
imgEdit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(Barcode.this, "test", Toast.LENGTH_SHORT).show();
}
});
imgProd = findViewById(R.id.imgPz);
imgProd.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(Barcode.this, "test", Toast.LENGTH_SHORT).show();
}
});
}
// Listener for scan button that uses soft scan to scan barcodes through app
private void addScanButtonListener() {
Button scanButton = (Button) findViewById(R.id.buttonStartScan);
// On Touch listener for scan button that scans barcodes when pressed
// and stops
// scanning when the button is released
scanButton.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
// Scan Button Press Event
if (event.getAction() == MotionEvent.ACTION_DOWN) {
try {
// Enable Soft scan
scanner.triggerType = Scanner.TriggerType.SOFT_ONCE;
// cancel any pending reads before reading barcodes
if (scanner.isReadPending())
scanner.cancelRead();
// Puts the device in a state where it can scan barcodes
scanner.read();
} catch (ScannerException e) {
e.printStackTrace();
}
// Scan Button Release Event
} else if (event.getAction() == MotionEvent.ACTION_UP) {
try {
// cancel any pending reads before reading barcodes
if (scanner.isReadPending())
scanner.cancelRead();
} catch (ScannerException e) {
e.printStackTrace();
}
}
return false;
}
});
}
public void btnCliccato() {
FragmentTransaction ft = getFragmentManager().beginTransaction();
Fragment prev = getFragmentManager().findFragmentByTag("dialog");
if (prev != null) {
ft.remove(prev);
}
ft.addToBackStack(null);
DialogFragment dialogFragment = new DialogoEdit();
dialogFragment.show(ft, "dialog");
}
@Override
public void applyTexts(String txtMinsan) {
PutCampi(txtMinsan);
}
private class ResultBarcode extends Handler {
@Override
public void handleMessage(Message msg) {
Bundle bundle = msg.getData();
if (bundle.containsKey("riceprod")) {
String value = bundle.getString("riceprod");
outputNome.setText(value);
}
}
}
ServiceConnection mConnection = new ServiceConnection() {
@Override
public void onServiceDisconnected(ComponentName name) {
mBounded = false;
Log.i("BARCODE","DISCONNESSO");
}
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
/*SocketService.LocalBinder myBinder = (SocketService.LocalBinder) service;
s = myBinder.getService();*/
mBounded = true;
LocalBinder mLocalBinder = (LocalBinder)service;
s = mLocalBinder.getServerInstance();
Log.i("BARCODE","CONNESSO");
}
};
@Override
public void onData(ScanDataCollection scanDataCollection) {
// Process the scanned data in a background thread using AsyncTask
new AsyncDataUpdate().execute(scanDataCollection);
Intent mIntent = new Intent(this,SocketService.class);
Log.i("vari test Int","" + mIntent);
//startService(mIntent);
Log.i("vari test mConn",""+mConnection);
Log.i("vari test mBin",""+Context.BIND_AUTO_CREATE);
bindService(mIntent, mConnection, Context.BIND_AUTO_CREATE);
Log.i("BARCODE CONNECTION ",""+bindService(mIntent, mConnection, BIND_AUTO_CREATE));
}
@Override
public void onOpened(EMDKManager emdkManager) {
this.emdkManager = emdkManager;
try {
initializeScanner();
} catch (ScannerException e) {
e.printStackTrace();
}
Toast.makeText(Barcode.this, "Press Hard Scan Button to start scanning...", Toast.LENGTH_SHORT).show();
}
@Override
public void onClosed() {
if (this.emdkManager != null) {
this.emdkManager.release();
this.emdkManager = null;
}
}
@Override
protected void onDestroy() {
super.onDestroy();
if (emdkManager != null) {
emdkManager.release();
emdkManager = null;
}
}
@Override
public void onStatus(StatusData statusData) {
// Process the scan status event on the background thread using AsyncTask
new AsyncStatusUpdate().execute(statusData);
}
private class AsyncDataUpdate extends AsyncTask<ScanDataCollection, Void, String> {
@Override
protected String doInBackground(ScanDataCollection... params) {
String barcodeData = "";
ScanDataCollection scanDataCollection = params[0];
if ((scanDataCollection != null) && (scanDataCollection.getResult() == ScannerResults.SUCCESS)) {
ArrayList<ScanDataCollection.ScanData> scanDatas = scanDataCollection.getScanData();
for (ScanDataCollection.ScanData data : scanDatas) {
barcodeData = data.getData();
Log.i("status string: ", barcodeData);
ScanDataCollection.LabelType labelType = data.getLabelType();
}
}
return barcodeData;
}
@Override
protected void onPostExecute(String result) {
String risultato = PutCampi(result);
Log.i("Risultato ", risultato);
}
}
public String PutCampi(String barcode) {
//prodotto
JSONArray aProdotto = new JSONArray();
try {
aProdotto.put("");
aProdotto.put(barcode);
aProdotto.put("1");
//System.out.println("info aProdotto"+cChiave);
} catch (Exception e) {
e.printStackTrace();
}
//campi
JSONArray aCampi = new JSONArray();
try {
aCampi.put("C111");
aCampi.put("C134");
aCampi.put("C116");
aCampi.put("C141");
aCampi.put("Prezzi2");
aCampi.put("Prezzi21");
} catch (Exception e) {
e.printStackTrace();
}
JSONArray aDati = new JSONArray();
try {
aDati.put(aProdotto);
//archivio
aDati.put("");
aDati.put(aCampi);
//Log.i("aDati",""+aDati);
} catch (Exception e) {
e.printStackTrace();
}
cDati = "riceprod: " + aDati.toString();
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
long endTime = System.currentTimeMillis() + 10000;
Log.i("Dati in barcode ", cDati);
try {
s.sendMessage(cDati);
while (cServerMsg.isEmpty()) {
cServerMsg = s.line;
Log.i("Dati in cServer: ", cServerMsg);
cPopup = "Nessun prodotto trovato";
if (endTime < System.currentTimeMillis()) {
cServerMsg = "[]";
Log.i("Dati in cServer: ", cServerMsg);
cPopup = "Non è stato possibile completare l'operazione. Si prega riprovare più tardi.";
}
Log.i("cServerMsg", "" + cServerMsg);
if (cServerMsg.equals("[]")) {
Toast.makeText(Barcode.this, cPopup, Toast.LENGTH_LONG).show();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}, 500); // durata del timeout
return cServerMsg;
}
private class AsyncStatusUpdate extends AsyncTask<StatusData, Void, String> {
@Override
protected String doInBackground(StatusData... params) {
String statusStr = "";
StatusData statusData = params[0];
StatusData.ScannerStates state = statusData.getState();
switch (state) {
case IDLE:
statusStr = "The scanner enabled and its idle";
// Start an async scan
/*try {
// An attempt to use the scanner continuously and rapidly (with a delay < 100 ms between scans)
// may cause the scanner to pause momentarily before resuming the scanning.
// Hence add some delay (>= 100ms) before submitting the next read.
try {
Thread.sleep(100);
scanner.read();
} catch (InterruptedException e) {
e.printStackTrace();
}
// scanner.read();
} catch (ScannerException e) {
statusStr = e.getMessage();
}*/
break;
case SCANNING:
statusStr = "Scanning...";
break;
case WAITING:
statusStr = "Waiting for trigger press...";
break;
case DISABLED:
statusStr = "SCanner is not enabled";
break;
default:
break;
}
return statusStr;
}
@Override
protected void onPostExecute(String result) {
Log.i("Status", result);
}
}
private void initializeScanner() throws ScannerException {
if (scanner == null) {
// Get a reference to the barcode Manager object
barcodeManager = (BarcodeManager) this.emdkManager.getInstance(EMDKManager.FEATURE_TYPE.BARCODE);
// Select the default scanner as defined on the device
scanner = barcodeManager.getDevice(BarcodeManager.DeviceIdentifier.DEFAULT);
// Add Data and Status Listeners
scanner.addDataListener(this);
scanner.addStatusListener(this);
// Select Trigger mode
scanner.triggerType = Scanner.TriggerType.HARD;
scanner.enable();
try {
ScannerConfig config = scanner.getConfig();
config.decoderParams.code39.enabled = true;
scanner.setConfig(config);
} catch (ScannerException e) {
e.printStackTrace();
}
// start an asynchronous scan.
scanner.read();
}
}
private BroadcastReceiver myBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
//System.out.println("info su decodedData : " + action);
if (action.equals(getResources().getString(R.string.dw_action))) {
//displayScanResult(intent);
}
}
};
private void GetProdotto(String result) {
}
private void Chiudi() {
Intent i = new Intent(Barcode.this, Scollega.class);
startActivity(i);
}
private void SvuotaElenco() {
arrayAdapter.clear();
}
private void GeneraVendita() {
}
private void ModiGiac() {
}
private void GeneraSpunta() {
}
private void OrdineInterno() {
}
@Override
protected void onStart() {
super.onStart();
}
@Override
protected void onStop() {
super.onStop();
if (mBounded) {
unbindService(mConnection);
mBounded = false;
}
try {
if (scanner != null) {
scanner.disable();
scanner = null;
}
} catch (ScannerException e) {
e.printStackTrace();
}
}
}
你有什么主意吗？