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Button to activate flash

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Adding button to activate/deactivate flash during the capturing the phase.
This commit is contained in:
micaTewe
2015-09-15 00:50:42 +02:00
committed by Daniel Cousens
parent c80f254496
commit 9a365ce13c
4 changed files with 169 additions and 23 deletions
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123
android/ZBarScannerActivity.java
View File

@@ -7,9 +7,11 @@ import org.json.JSONObject;
import android.app.Activity;
import android.content.Intent;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.hardware.Camera;
import android.hardware.Camera.CameraInfo;
import android.hardware.Camera.Parameters;
import android.hardware.Camera.PreviewCallback;
import android.hardware.Camera.AutoFocusCallback;
import android.os.Bundle;
@@ -176,25 +178,6 @@ implements SurfaceHolder.Callback {
die(e.getMessage());
return;
}
Camera.Parameters camParams = camera.getParameters();
if(flashMode.equals("on")) {
camParams.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
} else if(flashMode.equals("off")) {
camParams.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);
} else {
camParams.setFlashMode(Camera.Parameters.FLASH_MODE_AUTO);
}
if (android.os.Build.VERSION.SDK_INT >= 14) {
camParams.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
}
try { camera.setParameters(camParams); }
catch (RuntimeException e) {
Log.d("csZBar", "Unsupported camera parameter reported for flash mode: "+flashMode);
}
tryStartPreview();
}
@Override
@@ -251,7 +234,78 @@ implements SurfaceHolder.Callback {
holder = hld;
tryStartPreview();
}
public void onConfigurationChanged(Configuration newConfig)
{
super.onConfigurationChanged(newConfig);
int rotation = getWindowManager().getDefaultDisplay().getRotation();
switch(rotation)
{
case 0: // '\0'
rotation = 90;
break;
case 1: // '\001'
rotation = 0;
break;
case 2: // '\002'
rotation = 270;
break;
case 3: // '\003'
rotation = 180;
break;
default:
rotation = 90;
break;
}
camera.setDisplayOrientation(rotation);
android.hardware.Camera.Parameters params = camera.getParameters();
tryStopPreview();
tryStartPreview();
}
public void toggleFlash(View view)
{
camera.startPreview();
android.hardware.Camera.Parameters camParams = camera.getParameters();
//If the flash is set to off
if(camParams.getFlashMode().equals(Parameters.FLASH_MODE_OFF) && !(camParams.getFlashMode().equals(Parameters.FLASH_MODE_TORCH))&& !(camParams.getFlashMode().equals(Parameters.FLASH_MODE_ON)))
camParams.setFlashMode(Parameters.FLASH_MODE_TORCH);
else //if(camParams.getFlashMode() == Parameters.FLASH_MODE_ON || camParams.getFlashMode()== Parameters.FLASH_MODE_TORCH)
camParams.setFlashMode(Parameters.FLASH_MODE_OFF);
try
{
// camera.setParameters(camParams);
camera.setPreviewDisplay(holder);
camera.setPreviewCallback(previewCb);
camera.startPreview();
if (android.os.Build.VERSION.SDK_INT >= 14) {
camera.autoFocus(autoFocusCb); // We are not using any of the
// continuous autofocus modes as that does not seem to work
// well with flash setting of "on"... At least with this
// simple and stupid focus method, we get to turn the flash
// on during autofocus.
camParams.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
}
//tryStopPreview();
//tryStartPreview();
//camParams.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
camera.setParameters(camParams);
}
catch(RuntimeException e)
{
Log.d("csZBar", (new StringBuilder("Unsupported camera parameter reported for flash mode: ")).append(flashMode).toString());
} catch (IOException e) {
Log.d("csZBar", (new StringBuilder("Wrong holder data")).append(flashMode).toString());
}
}
// Continuously auto-focus -----------------------------------------
// For API Level < 14
@@ -380,8 +434,37 @@ implements SurfaceHolder.Callback {
private void tryStartPreview () {
if(holder != null) {
try {
int rotation = getWindowManager().getDefaultDisplay().getRotation();
switch(rotation)
{
case 0: // '\0'
rotation = 90;
break;
case 1: // '\001'
rotation = 0;
break;
case 2: // '\002'
rotation = 270;
break;
case 3: // '\003'
rotation = 180;
break;
default:
rotation = 90;
break;
}
// 90 degrees rotation for Portrait orientation Activity.
camera.setDisplayOrientation(90);
camera.setDisplayOrientation(rotation);
android.hardware.Camera.Parameters camParams = camera.getParameters();
//camParams.setFlashMode(Parameters.FLASH_MODE_TORCH);
camParams.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
camera.setParameters(camParams);
camera.setPreviewDisplay(holder);
camera.setPreviewCallback(previewCb);