@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_FOCUS:
if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
doFocus(true);
}
return true;
case KeyEvent.KEYCODE_CAMERA:
if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
doSnap();
}
return true;
case KeyEvent.KEYCODE_DPAD_CENTER:
// If we get a dpad center event without any focused view, move
// the focus to the shutter button and press it.
if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
// Start auto-focus immediately to reduce shutter lag. After
// the shutter button gets the focus, doFocus() will be
// called again but it is fine.
doFocus(true);
if (mShutterButton.isInTouchMode()) {
mShutterButton.requestFocusFromTouch();
} else {
mShutterButton.requestFocus();
}
mShutterButton.setPressed(true);
}
return true;
}
return super.onKeyDown(keyCode, event);
}
@Override
public void onShutterButtonFocus(ShutterButton button, boolean pressed) {
if (mPausing) {
return;
}
switch (button.getId()) {
case R.id.shutter_button:
doFocus(pressed);
break;
}
}
@Override
public void onShutterButtonClick(ShutterButton button) {
if (mPausing) {
return;
}
switch (button.getId()) {
case R.id.shutter_button:
doSnap();
break;
}
}
// Snapshots can only be taken after this is called. It should be called
// once only. We could have done these things in onCreate() but we want to
// make preview screen appear as soon as possible.
private void initializeFirstTime() {
if (mFirstTimeInitialized) return;
// Create orientation listenter. This should be done first because it
// takes some time to get first orientation.
mOrientationListener =
new OrientationEventListener(this) {
@Override
public void onOrientationChanged(int orientation) {
// We keep the last known orientation. So if the user
// first orient the camera then point the camera to
if (orientation == ORIENTATION_UNKNOWN) return;
mLastOrientation = roundOrientation(orientation);
int orientationCompensation = mLastOrientation + getDisplayRotation();
if (mOrientationCompensation != orientationCompensation) {
mOrientationCompensation = orientationCompensation;
setOrientationIndicator(mOrientationCompensation);
}
}
};
mOrientationListener.enable();
keepMediaProviderInstance();
checkStorage();
// Initialize last picture button.
mContentResolver = getContentResolver();
// Initialize shutter button.
mShutterButton = (ShutterButton) findViewById(R.id.shutter_button);
mShutterButton.setOnShutterButtonListener(this);
mShutterButton.setVisibility(View.VISIBLE);
mFocusRectangle = (FocusRectangle) findViewById(R.id.focus_rectangle);
updateFocusIndicator();
initializeScreenBrightness();
installIntentFilter();
mFirstTimeInitialized = true;
}