Marown/SWADroid
Marown/SWADroid
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Code Issues 25 Pull Requests Packages Projects Releases 29 Wiki Activity

Restored 1 second delay when scanning QR codes

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This commit is contained in:
Juan Miguel Boyero Corral 2016-06-19 22:39:09 +02:00
parent 289d8baf49
commit 001ef17e87
1 changed files with 31 additions and 2 deletions
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33
SWADroid/src/main/java/es/ugr/swad/swadroid/modules/rollcall/ContinuousCaptureActivity.java
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@ -44,18 +44,46 @@ public class ContinuousCaptureActivity extends AppCompatActivity {
*/
private static final int SCAN_TEXT_SIZE = 18;
/**
* Scan delay
*/
private static final long BULK_MODE_SCAN_DELAY_MS = 1000L;
/**
* Database helper
*/
private static DataBaseHelper dbHelper;
/**
* Cryptographic helper
*/
private static Crypto crypto;
/**
* Code view
*/
private CompoundBarcodeView barcodeView;
private MediaPlayer mediaPlayer;
/**
* Callback function called when a code is scanned
*/
private BarcodeCallback callback = new BarcodeCallback() {
private long lastTimestamp = 0;
@Override
public void barcodeResult(BarcodeResult result) {
handleDecode(result);
long currentTime = System.currentTimeMillis();
long diffLastTimestamp = currentTime - lastTimestamp;
if (result.getText() != null) {
if(diffLastTimestamp < BULK_MODE_SCAN_DELAY_MS) {
Log.d(TAG, "Too soon after the last barcode - ignore: " + diffLastTimestamp + " ms");
return;
}
handleDecode(result);
lastTimestamp = currentTime;
}
}
@Override
@ -112,6 +140,7 @@ public class ContinuousCaptureActivity extends AppCompatActivity {
boolean validContent = Utils.isValidNickname(qrContent);
User u = null;
MediaPlayer mediaPlayer;
if (validContent) {
u = dbHelper.getUser("userNickname", crypto.encrypt(qrContent.substring(1)));