Example usage for android.view GestureDetector GestureDetector

List of usage examples for android.view GestureDetector GestureDetector

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Introduction

In this page you can find the example usage for android.view GestureDetector GestureDetector.

Prototype

public GestureDetector(Context context, OnGestureListener listener)

Source Link

Document

Creates a GestureDetector with the supplied listener.

Usage

From source file:com.zirkler.czannotationviewsample.AnnotationView.PhotoViewAttacher.java

public PhotoViewAttacher(ImageView imageView, boolean zoomable) {
    mImageView = new WeakReference<>(imageView);

    imageView.setDrawingCacheEnabled(true);
    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer)
        observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (imageView.isInEditMode()) {
        return;//from w w w  .  j a v a2s.  co  m
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(),
            new GestureDetector.SimpleOnGestureListener() {

                // forward long click listener
                @Override
                public void onLongPress(MotionEvent e) {
                    if (null != mLongClickListener) {
                        mLongClickListener.onLongClick(getImageView(), e);
                    }
                }

                @Override
                public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
                    if (mSingleFlingListener != null) {
                        if (getScale() > DEFAULT_MIN_SCALE) {
                            return false;
                        }

                        if (MotionEventCompat.getPointerCount(e1) > SINGLE_TOUCH
                                || MotionEventCompat.getPointerCount(e2) > SINGLE_TOUCH) {
                            return false;
                        }

                        return mSingleFlingListener.onFling(e1, e2, velocityX, velocityY);
                    }
                    return false;
                }
            });

    mBaseRotation = 0.0f;

    // Finally, update the UI so that we're zoomable
    setZoomable(zoomable);
}

From source file:com.sim2dial.dialer.VideoCallFragment.java

@Override
public void onResume() {
    super.onResume();

    if (mVideoView != null) {
        ((GLSurfaceView) mVideoView).onResume();
    }// w w w .j a v a 2s .  c o  m

    if (androidVideoWindowImpl != null) {
        synchronized (androidVideoWindowImpl) {
            LinphoneManager.getLc().setVideoWindow(androidVideoWindowImpl);
        }
    }

    mGestureDetector = new GestureDetector(inCallActivity, this);
    mScaleDetector = Compatibility.getScaleGestureDetector(inCallActivity, this);
}

From source file:com.nice295.fridgeplease.OcrCaptureActivity.java

/**
 * Initializes the UI and creates the detector pipeline.
 *//* ww  w .  j av a 2  s  .  c om*/
@Override
public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    setContentView(R.layout.activity_ocr_capture);

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    mPreview = (CameraSourcePreview) findViewById(R.id.preview);
    mGraphicOverlay = (GraphicOverlay<OcrGraphic>) findViewById(R.id.graphicOverlay);

    // read parameters from the intent used to launch the activity.
    boolean autoFocus = getIntent().getBooleanExtra(AutoFocus, false);
    boolean useFlash = getIntent().getBooleanExtra(UseFlash, false);

    // Check for the camera permission before accessing the camera.  If the
    // permission is not granted yet, request permission.
    int rc = ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA);
    if (rc == PackageManager.PERMISSION_GRANTED) {
        createCameraSource(autoFocus, useFlash);
    } else {
        requestCameraPermission();
    }

    mTempItemArray = new ArrayList<String>();
    mTags = new ArrayList<Tag>();
    mTagsView = (TagView) findViewById(R.id.tags);

    /*
    //set click listener
    tags.setOnTagClickListener(new TagView.OnTagClickListener() {
    @Override
    public void onTagClick(Tag tag, int position) {
        Log.d(TAG, "onTagClick");
    }
    });
            
    //set delete listener
    tags.setOnTagDeleteListener(new TagView.OnTagDeleteListener() {
    @Override
    public void onTagDeleted(final TagView view, final Tag tag, final int position) {
        Log.d(TAG, "onTagDeleted");
    }
    });
            
    //set long click listener
    tags.setOnTagLongClickListener(new TagView.OnTagLongClickListener() {
    @Override
    public void onTagLongClick(Tag tag, int position) {
        Log.d(TAG, "onTagLongClick");
    }
    });
    */

    gestureDetector = new GestureDetector(this, new CaptureGestureListener());
    scaleGestureDetector = new ScaleGestureDetector(this, new ScaleListener());

    /*
    Snackbar.make(mGraphicOverlay, "Tap to capture. Pinch/Stretch to zoom",
        Snackbar.LENGTH_LONG)
        .show();
    */

    //Paper.init(this);

    mDatabase = FirebaseDatabase.getInstance().getReference();

    handler = new Handler() {
        public void handleMessage(Message msg) {
            synchronized (mTags) {
                mTagsView.addTags(mTags);
            }
            mMenu.findItem(R.id.action_add).setEnabled(true);
        }
    };
}

From source file:com.android.andryyu.lifehelper.widget.RippleView.java

/**
 * Method that initializes all fields and sets listeners
 *
 * @param context Context used to create this view
 * @param attrs   Attribute used to initialize fields
 */// w  w w  . ja  va2 s  .c  o m
private void init(final Context context, final AttributeSet attrs) {
    if (isInEditMode())
        return;

    final TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.RippleView);
    rippleColor = typedArray.getColor(R.styleable.RippleView_rv_color, Color.parseColor("#33626262"));
    rippleType = typedArray.getInt(R.styleable.RippleView_rv_type, 0);
    hasToZoom = typedArray.getBoolean(R.styleable.RippleView_rv_zoom, false);
    isCentered = typedArray.getBoolean(R.styleable.RippleView_rv_centered, false);
    rippleDuration = typedArray.getInteger(R.styleable.RippleView_rv_rippleDuration, rippleDuration);
    frameRate = typedArray.getInteger(R.styleable.RippleView_rv_framerate, frameRate);
    rippleAlpha = typedArray.getInteger(R.styleable.RippleView_rv_alpha, rippleAlpha);
    ripplePadding = typedArray.getDimensionPixelSize(R.styleable.RippleView_rv_ripplePadding, 0);
    canvasHandler = new Handler();
    zoomScale = typedArray.getFloat(R.styleable.RippleView_rv_zoomScale, 1.03f);
    zoomDuration = typedArray.getInt(R.styleable.RippleView_rv_zoomDuration, 200);
    isListMode = typedArray.getBoolean(R.styleable.RippleView_rv_listMode, false);
    typedArray.recycle();
    paint = new Paint();
    paint.setAntiAlias(true);
    paint.setStyle(Paint.Style.FILL);
    paint.setColor(rippleColor);
    paint.setAlpha(rippleAlpha);
    this.setWillNotDraw(false);

    gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
        @Override
        public void onLongPress(MotionEvent event) {
            super.onLongPress(event);
            animateRipple(event);
            sendClickEvent(true);
            lastLongPressX = (int) event.getX();
            lastLongPressY = (int) event.getY();
            rippleStatus = RIPPLE_LONG_PRESS;
        }

        @Override
        public boolean onSingleTapConfirmed(MotionEvent e) {
            return true;
        }

        @Override
        public boolean onSingleTapUp(MotionEvent e) {
            return true;
        }
    });

    this.setDrawingCacheEnabled(true);
    this.setClickable(true);
    this.touchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
}

From source file:com.dl7.commonlib.views.RippleView.java

/**
 * Method that initializes all fields and sets listeners
 *
 * @param context Context used to create this view
 * @param attrs Attribute used to initialize fields
 *//*from   w w  w .  ja  va2s .com*/
private void init(final Context context, final AttributeSet attrs) {
    if (isInEditMode())
        return;

    final TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.RippleView);
    rippleColor = typedArray.getColor(R.styleable.RippleView_rv_color,
            ContextCompat.getColor(context, R.color.rippelColor));
    rippleType = typedArray.getInt(R.styleable.RippleView_rv_type, 0);
    hasToZoom = typedArray.getBoolean(R.styleable.RippleView_rv_zoom, false);
    isCentered = typedArray.getBoolean(R.styleable.RippleView_rv_centered, false);
    rippleDuration = typedArray.getInteger(R.styleable.RippleView_rv_rippleDuration, rippleDuration);
    frameRate = typedArray.getInteger(R.styleable.RippleView_rv_framerate, frameRate);
    rippleAlpha = typedArray.getInteger(R.styleable.RippleView_rv_alpha, rippleAlpha);
    ripplePadding = typedArray.getDimensionPixelSize(R.styleable.RippleView_rv_ripplePadding, 0);
    canvasHandler = new Handler();
    zoomScale = typedArray.getFloat(R.styleable.RippleView_rv_zoomScale, 1.03f);
    zoomDuration = typedArray.getInt(R.styleable.RippleView_rv_zoomDuration, 200);
    isListMode = typedArray.getBoolean(R.styleable.RippleView_rv_listMode, false);
    typedArray.recycle();
    paint = new Paint();
    paint.setAntiAlias(true);
    paint.setStyle(Paint.Style.FILL);
    paint.setColor(rippleColor);
    paint.setAlpha(rippleAlpha);
    this.setWillNotDraw(false);

    gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
        @Override
        public void onLongPress(MotionEvent event) {
            super.onLongPress(event);
            animateRipple(event);
            sendClickEvent(true);
            lastLongPressX = (int) event.getX();
            lastLongPressY = (int) event.getY();
            rippleStatus = RIPPLE_LONG_PRESS;
        }

        @Override
        public boolean onSingleTapConfirmed(MotionEvent e) {
            return true;
        }

        @Override
        public boolean onSingleTapUp(MotionEvent e) {
            return true;
        }
    });

    this.setDrawingCacheEnabled(true);
    this.setClickable(true);
    this.touchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
}

From source file:com.yek.keyboard.keyboards.views.CandidateView.java

/**
 * Construct a CandidateView for showing suggested words for completion.
 *//*from  w  w  w . j  a v  a  2 s  . co m*/
public CandidateView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    mSelectionHighlight = ContextCompat.getDrawable(context, R.drawable.list_selector_background_pressed);

    mAddToDictionaryHint = context.getString(R.string.hint_add_to_dictionary);
    // themed
    final KeyboardTheme theme = KeyboardThemeFactory.getCurrentKeyboardTheme(context.getApplicationContext());
    TypedArray a = theme.getPackageContext().obtainStyledAttributes(attrs, R.styleable.AnyKeyboardViewTheme, 0,
            theme.getThemeResId());
    int colorNormal = ContextCompat.getColor(context, R.color.candidate_normal);
    int colorRecommended = ContextCompat.getColor(context, R.color.candidate_recommended);
    int colorOther = ContextCompat.getColor(context, R.color.candidate_other);
    float fontSizePixel = context.getResources().getDimensionPixelSize(R.dimen.candidate_font_height);
    try {
        colorNormal = a.getColor(R.styleable.AnyKeyboardViewTheme_suggestionNormalTextColor, colorNormal);
        colorRecommended = a.getColor(R.styleable.AnyKeyboardViewTheme_suggestionRecommendedTextColor,
                colorRecommended);
        colorOther = a.getColor(R.styleable.AnyKeyboardViewTheme_suggestionOthersTextColor, colorOther);
        mDivider = a.getDrawable(R.styleable.AnyKeyboardViewTheme_suggestionDividerImage);
        final Drawable stripImage = a.getDrawable(R.styleable.AnyKeyboardViewTheme_suggestionBackgroundImage);
        if (stripImage == null)
            setBackgroundColor(Color.BLACK);
        else
            setBackgroundDrawable(stripImage);
        fontSizePixel = a.getDimension(R.styleable.AnyKeyboardViewTheme_suggestionTextSize, fontSizePixel);
    } catch (Exception e) {
        Logger.w(TAG, "Got an exception while reading theme data", e);
    }
    mXGap = a.getDimension(R.styleable.AnyKeyboardViewTheme_suggestionWordXGap, 20);
    a.recycle();
    mColorNormal = colorNormal;
    mColorRecommended = colorRecommended;
    mColorOther = colorOther;
    if (mDivider == null)
        mDivider = ContextCompat.getDrawable(context, R.drawable.dark_suggestions_divider);
    // end of themed

    mPaint = new Paint();
    mPaint.setColor(mColorNormal);
    mPaint.setAntiAlias(true);
    mPaint.setTextSize(fontSizePixel);
    mPaint.setStrokeWidth(0);
    mPaint.setTextAlign(Align.CENTER);
    mTextPaint = new TextPaint(mPaint);
    final int minTouchableWidth = context.getResources()
            .getDimensionPixelOffset(R.dimen.candidate_min_touchable_width);
    mGestureDetector = new GestureDetector(context, new CandidateStripGestureListener(minTouchableWidth));
    setWillNotDraw(false);
    setHorizontalScrollBarEnabled(false);
    setVerticalScrollBarEnabled(false);
    scrollTo(0, getScrollY());
}

From source file:de.janniskilian.xkcdreader.presentation.components.showcomics.ShowComicsActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    DaggerShowComicsComponent.builder().appComponent(((XKCDReaderApp) getApplication()).getComponent())
            .showComicsModule(new ShowComicsModule(this)).build().inject(this);

    setContentView(R.layout.activity_show_comics);
    ButterKnife.bind(this);

    // Set the icon for the overview screen.
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        final Bitmap icon = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_overview);
        final int color = ContextCompat.getColor(this, R.color.primary);

        setTaskDescription(new ActivityManager.TaskDescription(null, icon, color));
    }/*from w w  w  . j a va2  s.  co  m*/

    setSupportActionBar(toolbar);
    // Set the correct margin for the overlaying toolbar.
    final AppBarLayout.LayoutParams layoutParams = new AppBarLayout.LayoutParams(
            searchToolbar.getLayoutParams());
    layoutParams.setMargins(0, -layoutParams.height, 0, 0);
    searchToolbar.setLayoutParams(layoutParams);

    comicsAdapter = new ComicsAdapter(getSupportFragmentManager(), this);
    viewPager.setAdapter(comicsAdapter);
    viewPager.addOnPageChangeListener(this);

    searchAdapter = new SearchAdapter();
    searchResults.setHasFixedSize(true);
    searchResults.setLayoutManager(new LinearLayoutManager(this));
    searchResults.addItemDecoration(new DividerItemDecoration(this));
    searchResults.setAdapter(searchAdapter);
    searchResults.addOnItemTouchListener(this);

    gestureDetector = new GestureDetector(this, new GestureDetector.SimpleOnGestureListener() {
        @Override
        public boolean onSingleTapUp(MotionEvent e) {
            return true;
        }
    });

    tintedBackArrow.setColorFilter(ContextCompat.getColor(this, R.color.primary), PorterDuff.Mode.SRC_ATOP);

    presenter.attachView(this);

    if (checkPlayServicesAvailability()) {
        scheduleTasks();
    }
}

From source file:com.anysoftkeyboard.keyboards.views.CandidateView.java

/**
 * Construct a CandidateView for showing suggested words for completion.
 *//*w w  w . java  2 s  . c  om*/
public CandidateView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    mSelectionHighlight = ContextCompat.getDrawable(context, R.drawable.list_selector_background_pressed);

    mAddToDictionaryHint = context.getString(R.string.hint_add_to_dictionary);
    // themed
    final KeyboardTheme theme = KeyboardThemeFactory.getCurrentKeyboardTheme(context.getApplicationContext());
    TypedArray a = theme.getPackageContext().obtainStyledAttributes(attrs, R.styleable.AnyKeyboardViewTheme, 0,
            theme.getThemeResId());
    int colorNormal = ContextCompat.getColor(context, R.color.candidate_normal);
    int colorRecommended = ContextCompat.getColor(context, R.color.candidate_recommended);
    int colorOther = ContextCompat.getColor(context, R.color.candidate_other);
    float fontSizePixel = context.getResources().getDimensionPixelSize(R.dimen.candidate_font_height);
    try {
        colorNormal = a.getColor(R.styleable.AnyKeyboardViewTheme_suggestionNormalTextColor, colorNormal);
        colorRecommended = a.getColor(R.styleable.AnyKeyboardViewTheme_suggestionRecommendedTextColor,
                colorRecommended);
        colorOther = a.getColor(R.styleable.AnyKeyboardViewTheme_suggestionOthersTextColor, colorOther);
        mDivider = a.getDrawable(R.styleable.AnyKeyboardViewTheme_suggestionDividerImage);
        final Drawable stripImage = a.getDrawable(R.styleable.AnyKeyboardViewTheme_suggestionBackgroundImage);
        if (stripImage == null)
            setBackgroundColor(Color.BLACK);
        else
            setBackgroundDrawable(stripImage);
        fontSizePixel = a.getDimension(R.styleable.AnyKeyboardViewTheme_suggestionTextSize, fontSizePixel);
    } catch (Exception e) {
        Logger.w(TAG, "Got an exception while reading theme data", e);
    }
    mHorizontalGap = a.getDimension(R.styleable.AnyKeyboardViewTheme_suggestionWordXGap, 20);
    a.recycle();
    mColorNormal = colorNormal;
    mColorRecommended = colorRecommended;
    mColorOther = colorOther;
    if (mDivider == null)
        mDivider = ContextCompat.getDrawable(context, R.drawable.dark_suggestions_divider);
    // end of themed

    mPaint = new Paint();
    mPaint.setColor(mColorNormal);
    mPaint.setAntiAlias(true);
    mPaint.setTextSize(fontSizePixel);
    mPaint.setStrokeWidth(0);
    mPaint.setTextAlign(Align.CENTER);
    mTextPaint = new TextPaint(mPaint);
    final int minTouchableWidth = context.getResources()
            .getDimensionPixelOffset(R.dimen.candidate_min_touchable_width);
    mGestureDetector = new GestureDetector(context, new CandidateStripGestureListener(minTouchableWidth));
    setWillNotDraw(false);
    setHorizontalScrollBarEnabled(false);
    setVerticalScrollBarEnabled(false);
    scrollTo(0, getScrollY());
}

From source file:uk.org.downiesoft.slideshow.SlideShowActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Window win = getWindow();/*from   w  w  w  .  jav a2  s. com*/
    win.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS,
            WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
    win.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION,
            WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
    win.requestFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
    mUiHider = new UiHider(this);
    getWindow().getDecorView().setOnSystemUiVisibilityChangeListener(mUiHider);
    mCacheManager = ThumbnailCacheManager.getInstance(this);
    SlideShowActivity.debug(1, TAG, "onCreate: %s",
            savedInstanceState == null ? "null" : savedInstanceState.toString());
    setContentView(R.layout.activity_slide_show);
    PreferenceManager.setDefaultValues(this, R.xml.view_preferences, false);
    PreferenceManager.setDefaultValues(this, R.xml.slideshow_preferences, false);
    PreferenceManager.setDefaultValues(this, R.xml.cache_preferences, false);
    PreferenceManager.setDefaultValues(this, R.xml.wallpaper_preferences, false);
    PreferenceManager.setDefaultValues(this, R.xml.other_preferences, false);
    mSlideshowSettings = PreferenceManager.getDefaultSharedPreferences(this);
    int thumbSize = Integer.parseInt(mSlideshowSettings.getString(getString(R.string.PREFS_THUMBSIZE), "1"));
    // Hack to convert old hard-coded thumbsize settings to platform dependent sizes
    if (thumbSize > 2) {
        thumbSize = thumbSize / 90;
        SharedPreferences.Editor editor = mSlideshowSettings.edit();
        editor.putString(getString(R.string.PREFS_THUMBSIZE), Integer.toString(thumbSize));
        editor.apply();
    }
    FragmentManager fm = getFragmentManager();
    int cacheLimit = Integer
            .parseInt(mSlideshowSettings.getString(getString(R.string.PREFS_CACHE_LIMIT), "10"));
    mPreviewButton = (ImageView) findViewById(R.id.slideShowImageButton);
    mPreviewView = (FrameLayout) findViewById(R.id.previewContainer);
    RelativeLayout divider = (RelativeLayout) findViewById(R.id.frameDivider);
    if (divider != null) {
        divider.setOnTouchListener(new OnTouchListener() {
            @Override
            public boolean onTouch(View view, MotionEvent event) {
                return mGestureDetector.onTouchEvent(event) || view.onTouchEvent(event);
            }
        });
    }
    mPreviewFragment = (PreviewFragment) fm.findFragmentByTag(PreviewFragment.TAG);
    if (mPreviewView != null && mPreviewFragment == null) {
        mPreviewFragment = new PreviewFragment();
        fm.beginTransaction().replace(R.id.previewContainer, mPreviewFragment, PreviewFragment.TAG).commit();
    }
    mGridViewFragment = (GridViewFragment) fm.findFragmentByTag(GridViewFragment.TAG);
    if (mGridViewFragment == null) {
        mGridViewFragment = new GridViewFragment();
        FragmentTransaction ft = fm.beginTransaction();
        ft.replace(R.id.fragmentContainer, mGridViewFragment, GridViewFragment.TAG);
        ft.commit();
    }
    mGestureDetector = new GestureDetector(this, new DividerGestureListener());
    // restart/stop service as required
    Intent intent = getIntent();
    if (intent != null && intent.getAction() != null && intent.getAction().equals(ACTION_STOP_WALLPAPER)
            && isServiceRunning()) {
        stopWallpaperService();
        finish();
    } else {
        if (!mSlideshowSettings.getBoolean(getString(R.string.PREFS_WALLPAPER_ENABLE), false)) {
            if (isServiceRunning()) {
                stopWallpaperService();
            }
        } else {
            if (!isServiceRunning()) {
                Intent startIntent = new Intent(SlideShowActivity.this, WallpaperService.class);
                startService(startIntent);
                invalidateOptionsMenu();
            }
        }
    }
    mCacheManager.tidyCache(cacheLimit);
    BitmapManager.setDisplayMetrics(getResources().getDisplayMetrics());
}

From source file:com.masseyhacks.sjam.cheqout.ScannerActivity.java

/**
 * Initializes the UI and creates the detector pipeline.
 *///www .  j  a  v a  2s  .co m
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_scanner);

    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            // GO TO CART
            Intent intent = new Intent(getApplicationContext(), CartActivity.class);
            intent.putExtra("items", items);
            startActivity(intent);
        }
    });

    items = new LinkedHashMap();
    //        quantities = new LinkedHashMap();

    mPreview = (CameraSourcePreview) findViewById(R.id.preview);
    mGraphicOverlay = (GraphicOverlay<BarcodeGraphic>) findViewById(R.id.graphicOverlay);

    // read parameters from the intent used to launch the activity.
    boolean autoFocus = getIntent().getBooleanExtra(AutoFocus, true);
    boolean useFlash = getIntent().getBooleanExtra(UseFlash, false);

    // Check for the camera permission before accessing the camera.  If the
    // permission is not granted yet, request permission.
    int rc = ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA);
    if (rc == PackageManager.PERMISSION_GRANTED) {
        createCameraSource(autoFocus, useFlash);
    } else {
        requestCameraPermission();
    }

    gestureDetector = new GestureDetector(this, new CaptureGestureListener());
    scaleGestureDetector = new ScaleGestureDetector(this, new ScaleListener());

    //        Snackbar.make(mGraphicOverlay, "Tap to capture. Pinch/Stretch to zoom",
    //                Snackbar.LENGTH_LONG)
    //                .show();
}