/**
* Convenience method for {@link com.google.zxing.client.android.CaptureActivity}
*
* @param newSetting if {@code true}, light should be turned on if currently off. And vice versa.
*/
public synchronized void setTorch(boolean newSetting) {
if (newSetting != configManager.getTorchState(camera)) {
if (camera != null) {
if (autoFocusManager != null) {
autoFocusManager.stop();
}
configManager.setTorch(camera, newSetting);
if (autoFocusManager != null) {
autoFocusManager.start();
}
}
}
}
/** Tells the camera to stop drawing preview frames. */
public synchronized void stopPreview() {
if (autoFocusManager != null) {
autoFocusManager.stop();
autoFocusManager = null;
}
if (camera != null && previewing) {
camera.stopPreview();
previewCallback.setHandler(null, 0);
previewing = false;
}
}
/**
* Asks the camera hardware to perform an autofocus.
*
* @param delay Time delay to send with the request
*/
public synchronized void requestAutoFocus(long delay) {
autoFocusManager.start(delay);
}