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Added an option for camera flash to be on/off/auto during QR code scanning

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This commit is contained in:
Woon Tien Jing
2014-12-06 16:58:46 +08:00
parent 889be2cc3a
commit 0b0699f7b4
4 changed files with 25 additions and 1 deletions
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16
android/ZBarScannerActivity.java
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@@ -14,6 +14,7 @@ import android.hardware.Camera.PreviewCallback;
import android.hardware.Camera.AutoFocusCallback;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.Gravity;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
@@ -51,6 +52,7 @@ implements SurfaceHolder.Callback {
// Customisable stuff
String whichCamera;
String flashMode;
// For retrieving R.* resources, from the actual app package
// (we can't use actual.application.package.R.* in our code as we
@@ -81,6 +83,7 @@ implements SurfaceHolder.Callback {
String textTitle = params.optString("text_title");
String textInstructions = params.optString("text_instructions");
whichCamera = params.optString("camera");
flashMode = params.optString("flash");
// Initiate instance variables
autoFocusHandler = new Handler();
@@ -147,6 +150,19 @@ implements SurfaceHolder.Callback {
return;
}
Camera.Parameters camParams = camera.getParameters();
if(flashMode.equals("on")) {
camParams.setFlashMode(Camera.Parameters.FLASH_MODE_ON);
} else if(flashMode.equals("off")) {
camParams.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);
} else {
camParams.setFlashMode(Camera.Parameters.FLASH_MODE_AUTO);
}
try { camera.setParameters(camParams); }
catch (RuntimeException e) {
Log.d("csZBar", "Unsupported camera parameter reported for flash mode: "+flashMode);
}
tryStartPreview();
}