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Franck ALARY
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Jun 23, 2020
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36 changes: 36 additions & 0 deletions
36
app/src/main/java/com/dantsu/thermalprinter/async/AsyncBluetoothEscPosPrint.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| package com.dantsu.thermalprinter.async; | ||
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| import android.content.Context; | ||
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| import com.dantsu.escposprinter.connection.DeviceConnection; | ||
| import com.dantsu.escposprinter.connection.bluetooth.BluetoothPrintersConnections; | ||
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| public class AsyncBluetoothEscPosPrint extends AsyncEscPosPrint { | ||
| public AsyncBluetoothEscPosPrint(Context context) { | ||
| super(context); | ||
| } | ||
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| protected Integer doInBackground(AsyncEscPosPrinter... printersData) { | ||
| if (printersData.length == 0) { | ||
| return AsyncEscPosPrint.FINISH_NO_PRINTER; | ||
| } | ||
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| AsyncEscPosPrinter printerData = printersData[0]; | ||
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| DeviceConnection deviceConnection = printerData.getPrinterConnection(); | ||
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| if(deviceConnection == null) { | ||
| this.publishProgress(AsyncEscPosPrint.PROGRESS_CONNECTING); | ||
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| printersData[0] = new AsyncEscPosPrinter( | ||
| BluetoothPrintersConnections.selectFirstPaired(), | ||
| printerData.getPrinterDpi(), | ||
| printerData.getPrinterWidthMM(), | ||
| printerData.getPrinterNbrCharactersPerLine() | ||
| ); | ||
| printersData[0].setTextToPrint(printerData.getTextToPrint()); | ||
| } | ||
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| return super.doInBackground(printersData); | ||
| } | ||
| } |
171 changes: 171 additions & 0 deletions
171
app/src/main/java/com/dantsu/thermalprinter/async/AsyncEscPosPrint.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,171 @@ | ||
| package com.dantsu.thermalprinter.async; | ||
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| import android.app.AlertDialog; | ||
| import android.app.ProgressDialog; | ||
| import android.content.Context; | ||
| import android.os.AsyncTask; | ||
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| import com.dantsu.escposprinter.EscPosPrinter; | ||
| import com.dantsu.escposprinter.connection.DeviceConnection; | ||
| import com.dantsu.escposprinter.connection.bluetooth.BluetoothPrintersConnections; | ||
| import com.dantsu.escposprinter.exceptions.EscPosBarcodeException; | ||
| import com.dantsu.escposprinter.exceptions.EscPosConnectionException; | ||
| import com.dantsu.escposprinter.exceptions.EscPosEncodingException; | ||
| import com.dantsu.escposprinter.exceptions.EscPosParserException; | ||
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| import java.lang.ref.WeakReference; | ||
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| public abstract class AsyncEscPosPrint extends AsyncTask<AsyncEscPosPrinter, Integer, Integer> { | ||
| protected final static int FINISH_SUCCESS = 1; | ||
| protected final static int FINISH_NO_PRINTER = 2; | ||
| protected final static int FINISH_PRINTER_DISCONNECTED = 3; | ||
| protected final static int FINISH_PARSER_ERROR = 4; | ||
| protected final static int FINISH_ENCODING_ERROR = 5; | ||
| protected final static int FINISH_BARCODE_ERROR = 6; | ||
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| protected final static int PROGRESS_CONNECTING = 1; | ||
| protected final static int PROGRESS_CONNECTED = 2; | ||
| protected final static int PROGRESS_PRINTING = 3; | ||
| protected final static int PROGRESS_PRINTED = 4; | ||
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| protected ProgressDialog dialog; | ||
| protected WeakReference<Context> weakContext; | ||
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| public AsyncEscPosPrint(Context context) { | ||
| this.weakContext = new WeakReference<>(context); | ||
| } | ||
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| protected Integer doInBackground(AsyncEscPosPrinter... printersData) { | ||
| if (printersData.length == 0) { | ||
| return AsyncEscPosPrint.FINISH_NO_PRINTER; | ||
| } | ||
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| this.publishProgress(AsyncEscPosPrint.PROGRESS_CONNECTING); | ||
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| AsyncEscPosPrinter printerData = printersData[0]; | ||
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| try { | ||
| DeviceConnection deviceConnection = printerData.getPrinterConnection(); | ||
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| if(deviceConnection == null) { | ||
| deviceConnection = BluetoothPrintersConnections.selectFirstPaired(); | ||
| } | ||
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| if(deviceConnection == null) { | ||
| return AsyncEscPosPrint.FINISH_NO_PRINTER; | ||
| } | ||
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| EscPosPrinter printer = new EscPosPrinter(deviceConnection, printerData.getPrinterDpi(), printerData.getPrinterWidthMM(), printerData.getPrinterNbrCharactersPerLine()); | ||
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| this.publishProgress(AsyncEscPosPrint.PROGRESS_PRINTING); | ||
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| printer.printFormattedText(printerData.getTextToPrint()); | ||
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| this.publishProgress(AsyncEscPosPrint.PROGRESS_PRINTED); | ||
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| } catch (EscPosConnectionException e) { | ||
| e.printStackTrace(); | ||
| return AsyncEscPosPrint.FINISH_PRINTER_DISCONNECTED; | ||
| } catch (EscPosParserException e) { | ||
| e.printStackTrace(); | ||
| return AsyncEscPosPrint.FINISH_PARSER_ERROR; | ||
| } catch (EscPosEncodingException e) { | ||
| e.printStackTrace(); | ||
| return AsyncEscPosPrint.FINISH_ENCODING_ERROR; | ||
| } catch (EscPosBarcodeException e) { | ||
| e.printStackTrace(); | ||
| return AsyncEscPosPrint.FINISH_BARCODE_ERROR; | ||
| } | ||
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| return AsyncEscPosPrint.FINISH_SUCCESS; | ||
| } | ||
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| protected void onPreExecute() { | ||
| if (this.dialog == null) { | ||
| Context context = weakContext.get(); | ||
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| if (context == null) { | ||
| return; | ||
| } | ||
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| this.dialog = new ProgressDialog(context); | ||
| this.dialog.setTitle("Printing in progress..."); | ||
| this.dialog.setMessage("..."); | ||
| this.dialog.setProgressNumberFormat("%1d / %2d"); | ||
| this.dialog.setCancelable(false); | ||
| this.dialog.setIndeterminate(false); | ||
| this.dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); | ||
| this.dialog.show(); | ||
| } | ||
| } | ||
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| protected void onProgressUpdate(Integer... progress) { | ||
| switch (progress[0]) { | ||
| case AsyncEscPosPrint.PROGRESS_CONNECTING: | ||
| this.dialog.setMessage("Connecting printer..."); | ||
| break; | ||
| case AsyncEscPosPrint.PROGRESS_CONNECTED: | ||
| this.dialog.setMessage("Printer is connected..."); | ||
| break; | ||
| case AsyncEscPosPrint.PROGRESS_PRINTING: | ||
| this.dialog.setMessage("Printer is printing..."); | ||
| break; | ||
| case AsyncEscPosPrint.PROGRESS_PRINTED: | ||
| this.dialog.setMessage("Printer has finished..."); | ||
| break; | ||
| } | ||
| this.dialog.setProgress(progress[0]); | ||
| this.dialog.setMax(4); | ||
| } | ||
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| protected void onPostExecute(Integer result) { | ||
| this.dialog.dismiss(); | ||
| this.dialog = null; | ||
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| Context context = weakContext.get(); | ||
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| if (context == null) { | ||
| return; | ||
| } | ||
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| switch (result) { | ||
| case AsyncEscPosPrint.FINISH_SUCCESS: | ||
| new AlertDialog.Builder(context) | ||
| .setTitle("Success") | ||
| .setMessage("Congratulation ! The text is printed !") | ||
| .show(); | ||
| break; | ||
| case AsyncEscPosPrint.FINISH_NO_PRINTER: | ||
| new AlertDialog.Builder(context) | ||
| .setTitle("No printer") | ||
| .setMessage("The application can't find any printer connected.") | ||
| .show(); | ||
| break; | ||
| case AsyncEscPosPrint.FINISH_PRINTER_DISCONNECTED: | ||
| new AlertDialog.Builder(context) | ||
| .setTitle("Broken connection") | ||
| .setMessage("Unable to connect the printer.") | ||
| .show(); | ||
| break; | ||
| case AsyncEscPosPrint.FINISH_PARSER_ERROR: | ||
| new AlertDialog.Builder(context) | ||
| .setTitle("Invalid formatted text") | ||
| .setMessage("It seems to be an invalid syntax problem.") | ||
| .show(); | ||
| break; | ||
| case AsyncEscPosPrint.FINISH_ENCODING_ERROR: | ||
| new AlertDialog.Builder(context) | ||
| .setTitle("Bad selected encoding") | ||
| .setMessage("The selected encoding character returning an error.") | ||
| .show(); | ||
| break; | ||
| case AsyncEscPosPrint.FINISH_BARCODE_ERROR: | ||
| new AlertDialog.Builder(context) | ||
| .setTitle("Invalid barcode") | ||
| .setMessage("Data send to be converted to barcode or QR code seems to be invalid.") | ||
| .show(); | ||
| break; | ||
| } | ||
| } | ||
| } |
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