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Samsung Galaxy Ace 4 Autofocus Issue

Oct 27, 2015 at 6:42 PM
When scanning barcodes with a Galaxy Ace 4, after 3 or 4 barcodes are decoded, the screen on the device goes black. The only way to get the app working again is to stop and restart. This happens when I use the SDK to build the scanner control directly into the Android application. The problem does not occur on any of the other devices. Looking deeper, if I install the stand alone ZXing barcode reader (downloaded from the Play Store), the same is true, however if I change the settings to turn the 'Auto Focus' off, the app works fine. Does anyone know if it is possible to turn off the Autofocus for the SDK version?