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cleanAddress)); Build and launch startActivity(geoIntent); geo query } catch (Exception ee) { } } }); Button bproductinfo = (Button) findViewById(R.id.productinfo); bproductinfo.setOnClickListener(new Button.OnClickListener() { public void onClick(View v) { try { Obtain Intent productInfoIntent = new product info Intent("android.intent.action.VIEW", via URL android.net.Uri.parse(je.get_producturl())); startActivity(productInfoIntent); } catch (Exception ee) { } } Selectively }); update Button bclose = (Button) findViewById(R.id.closejob); Button label if (je.get_status().equals("CLOSED")) { bclose.setText("Job is Closed. View Signature"); } bclose.setOnClickListener(new Button.OnClickListener() { public void onClick(View v) { if (je.get_status().equals("CLOSED")) { Show Signature Intent signatureIntent = new for CLOSED Intent("android.intent.action.VIEW", JobEntrys android.net.Uri.parse(myprefs.getServer() + "sigs/" + Initiate CloseJob je.get_jobid() + ".jpg")); Activity startActivity(signatureIntent); } else { Intent closeJobIntent = new Intent(ShowJob.this,CloseJob.class); Bundle b = je.toBundle(); closeJobIntent.putExtras(b); startActivityForResult(closeJobIntent,CLOSEJOBTASK); } } }); Log.d("CH12","Job status is :" + je.get_status()); } @Override protected void onActivityResult( int requestCode, int resultCode, Intent data) { switch (requestCode) { case CLOSEJOBTASK: Handle newly if (resultCode == 1) { closed JobEntry this.setResult(1, "", data.getExtras()); finish(); } break; } } }

6:

if you prefer to solder it directly to the board) Flip the board over, support it on a flat surface, and solder all the pins

Upon completion of the CloseJob Activity, the onActivityResult callback is invoked. When this situation occurs, this method receives a Bundle containing the data elements for the recently closed JobEntry B. If you recall, the ShowJob Activity was launched for result. , which permits a synchronous pattern, passing the result back to the caller. The requirement is to propagate this JobEntry data back up to the calling Activity, ManageJobs. Calling setResult() and passing the Bundle (obtained with getExtras()) fulfills this requirement. Despite the simple appearance of some text and a few easy-to-hit buttons, the ShowJob Activity provides a significant amount of functionality to the user. All that remains is to capture the signature to close out the job. Doing so requires an examination of the CloseJob Activity.

FIGURE 6-2

Our faithful mobile technician has just completed the maintenance operation on the part and is ready to head off to lunch before stopping for another job on the way home, but first he must close out this job with a signature from the customer. To accomplish this, the field service application presents a blank screen, and the customer uses a stylus (or a mouse in the case of the Android Emulator) to sign the device, acknowledging that the work has been completed. Once the signature has been captured, the data is submitted to the server. The proof of job completion has been captured, and the job can now be billed. Figure 12.13 demonstrates this sequence of events. This Activity can be broken down into two basic functions: the capture of a signature and the transmittal of job data to the server. Notice that this Activity s UI has no layout resource. All of the UI elements in this Activity are generated dynamically, as

jumper that spans from R14 to T14 Using a small spring clamp to hold it in place, solder it at R14 and T14

$left $cclen $chksum $j $d String containing the left four digits of $number Integer containing the number of characters in $number Integer containing the credit card checksum Loop counter Character containing individual digits extracted from $number

One element not found in this sample application is the local queuing of the signature. Ideally this would be done in the event that data coverage isn t available. The storage of the image is quite simple; the perhaps more challenging piece is the logic on when to attempt to send the data again. Considering all the development of this sample application is done on the Android Emulator with near-perfect connectivity, it s of little concern here. But in the interest of best preparing you to write real-world applications, it s worth reminding you of local queuing in the event of communications trouble in the field.

shown in listing 12.16. In addition, the ProgressDialog introduced in the RefreshJobs Activity is brought back for an encore, to let our mobile technician know that the captured signature is being sent when the Sign & Close menu option is selected. If the user selects Cancel, the ShowJob Activity resumes control. Note that the signature should be made prior to selecting the menu option.

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LISTING 12-1 ' ' ' ' =============================== MAXhelp20X2bas =============================== This program runs on a PICAXE-20X2 & controls a MAX7219 LED display driver The MAX7219 is connected to a 4-digit, 7-segment LED display The program displays the word "HELP"