Example usage for android.view GestureDetector GestureDetector

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:me.jreilly.JamesTweet.Dashboard.DashActivity.java

/**
 * Initializes the navigation drawer and its contents
 *//*from ww w.j  ava2  s . co  m*/
public void initDrawer() {
    //Find the view id
    mDrawerView = (RecyclerView) findViewById(R.id.left_drawer);
    //Drawer size is fixed
    mDrawerView.setHasFixedSize(true);
    //Add List Dividers
    mDrawerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL_LIST));

    //Initialize the Nav Adapter to populate the drawer
    mAdapter = new NavAdapter(navItems, this, mUsername, mprofileUrl);
    mActivity = this;
    mDrawerView.setAdapter(mAdapter);

    //Detect swipe to open navigation drawer
    final GestureDetector mGestureDetector = new GestureDetector(DashActivity.this,
            new GestureDetector.SimpleOnGestureListener() {
                @Override
                public boolean onSingleTapUp(MotionEvent e) {
                    return true;
                }
            });

    //Detect Item CLicks and respond accordingly
    mDrawerView.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {

        @Override
        public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
            View child = rv.findChildViewUnder(e.getX(), e.getY());

            if (child != null && mGestureDetector.onTouchEvent(e)) {

                if (rv.getChildPosition(child) == 0) {
                    swapToProfile();
                } else if (navItems[rv.getChildPosition(child) - 1].equals("Timeline")) {
                    swapToTimeline();
                } else if (navItems[rv.getChildPosition(child) - 1].equals("Mentions")) {
                    mDrawer.closeDrawers();
                    getSupportFragmentManager().beginTransaction()
                            .replace(R.id.content_frame, new MentionsFragment()).commit();
                } else if (navItems[rv.getChildPosition(child) - 1].equals("Favorites")) {
                    mDrawer.closeDrawers();
                    getSupportFragmentManager().beginTransaction()
                            .replace(R.id.content_frame, new FavoritesFragment()).commit();
                } else if (navItems[rv.getChildPosition(child) - 1].equals("Settings")) {
                    Intent intent = new Intent(mActivity, SettingsActivity.class);
                    startActivity(intent);
                }
                return true;
            }
            return false;
        }

        @Override
        public void onTouchEvent(RecyclerView rv, MotionEvent e) {

        }
    });

    mLayoutManager = new LinearLayoutManager(this);
    mDrawerView.setLayoutManager(mLayoutManager);

    mDrawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    mDrawerToggle = new ActionBarDrawerToggle(this, mDrawer, this.toolbar, R.string.openDrawer,
            R.string.closeDrawer) {
        @Override
        public void onDrawerOpened(View drawerView) {
            super.onDrawerOpened(drawerView);
        }

        @Override
        public void onDrawerClosed(View drawerView) {
            super.onDrawerClosed(drawerView);
        }
    };

    mDrawer.setDrawerListener(mDrawerToggle);
    mDrawerToggle.syncState();

}

---

From source file:org.totschnig.myexpenses.activity.ManageCategories.java

@Override
public void onCreate(Bundle savedInstanceState) {
    Intent intent = getIntent();/*from  w  w w .j  a  va  2s .c  o  m*/
    String action = intent.getAction();
    int title = 0;
    switch (action == null ? "" : action) {
    case Intent.ACTION_MAIN:
    case "myexpenses.intent.manage.categories":
        helpVariant = HelpVariant.manage;
        title = R.string.pref_manage_categories_title;
        break;
    case "myexpenses.intent.distribution":
        helpVariant = HelpVariant.distribution;
        //title is set in categories list
        break;
    case "myexpenses.intent.select_filter":
        helpVariant = HelpVariant.select_filter;
        title = R.string.search_category;
        break;
    default:
        helpVariant = HelpVariant.select_mapping;
        title = R.string.select_category;
    }
    setTheme(helpVariant.equals(HelpVariant.distribution) ? MyApplication.getThemeId()
            : MyApplication.getThemeIdEditDialog());
    super.onCreate(savedInstanceState);
    if (helpVariant.equals(HelpVariant.distribution)) {
        DisplayMetrics dm = getResources().getDisplayMetrics();

        final int REL_SWIPE_MIN_DISTANCE = (int) (SWIPE_MIN_DISTANCE * dm.densityDpi / 160.0f);
        final int REL_SWIPE_MAX_OFF_PATH = (int) (SWIPE_MAX_OFF_PATH * dm.densityDpi / 160.0f);
        final int REL_SWIPE_THRESHOLD_VELOCITY = (int) (SWIPE_THRESHOLD_VELOCITY * dm.densityDpi / 160.0f);
        mDetector = new GestureDetector(this, new GestureDetector.SimpleOnGestureListener() {
            @Override
            public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
                //http://stackoverflow.com/questions/937313/android-basic-gesture-detection
                try {
                    if (Math.abs(e1.getY() - e2.getY()) > REL_SWIPE_MAX_OFF_PATH)
                        return false;
                    if (e1.getX() - e2.getX() > REL_SWIPE_MIN_DISTANCE
                            && Math.abs(velocityX) > REL_SWIPE_THRESHOLD_VELOCITY) {
                        mListFragment.forward();
                        return true;
                    } else if (e2.getX() - e1.getX() > REL_SWIPE_MIN_DISTANCE
                            && Math.abs(velocityX) > REL_SWIPE_THRESHOLD_VELOCITY) {
                        mListFragment.back();
                        return true;
                    }
                } catch (Exception e) {
                }
                return false;
            }
        });
    }
    setContentView(R.layout.select_category);
    setupToolbar(true);
    if (title != 0)
        getSupportActionBar().setTitle(title);
    FragmentManager fm = getSupportFragmentManager();
    mListFragment = ((CategoryList) fm.findFragmentById(R.id.category_list));
    if (helpVariant.equals(HelpVariant.select_mapping) || helpVariant.equals(HelpVariant.manage)) {
        configureFloatingActionButton(R.string.menu_create_main_cat);
    } else {
        findViewById(R.id.CREATE_COMMAND).setVisibility(View.GONE);
    }
}

---

From source file:com.tjw.selectimage.photoview.PhotoViewAttacher.java

public PhotoViewAttacher(ImageView imageView) {
    mImageView = imageView;//from w ww. ja  v a 2s .  c  o  m
    imageView.setOnTouchListener(this);
    imageView.addOnLayoutChangeListener(this);

    if (imageView.isInEditMode()) {
        return;
    }

    mBaseRotation = 0.0f;

    // Create Gesture Detectors...
    mScaleDragDetector = new CustomGestureDetector(imageView.getContext(), this);

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

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

                @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;
                }
            });

    mGestureDetector.setOnDoubleTapListener(new GestureDetector.OnDoubleTapListener() {
        @Override
        public boolean onSingleTapConfirmed(MotionEvent e) {
            if (mOnClickListener != null) {
                mOnClickListener.onClick(mImageView);
            }
            final RectF displayRect = getDisplayRect();

            if (displayRect != null) {
                final float x = e.getX(), y = e.getY();

                // Check to see if the user tapped on the photo
                if (displayRect.contains(x, y)) {

                    float xResult = (x - displayRect.left) / displayRect.width();
                    float yResult = (y - displayRect.top) / displayRect.height();

                    if (mPhotoTapListener != null) {
                        mPhotoTapListener.onPhotoTap(mImageView, xResult, yResult);
                    }
                    return true;
                } else {
                    if (mOutsidePhotoTapListener != null) {
                        mOutsidePhotoTapListener.onOutsidePhotoTap(mImageView);
                    }
                }
            }
            return false;
        }

        @Override
        public boolean onDoubleTap(MotionEvent ev) {
            try {
                float scale = getScale();
                float x = ev.getX();
                float y = ev.getY();

                if (scale < getMediumScale()) {
                    setScale(getMediumScale(), x, y, true);
                } else if (scale >= getMediumScale() && scale < getMaximumScale()) {
                    setScale(getMaximumScale(), x, y, true);
                } else {
                    setScale(getMinimumScale(), x, y, true);
                }
            } catch (ArrayIndexOutOfBoundsException e) {
                // Can sometimes happen when getX() and getY() is called
            }

            return true;
        }

        @Override
        public boolean onDoubleTapEvent(MotionEvent e) {
            // Wait for the confirmed onDoubleTap() instead
            return false;
        }
    });
}

---

From source file:com.om.snipit.activities.BarcodeCaptureActivity.java

/**
 * Initializes the UI and creates the detector pipeline.
 *//*from   w w w.  j a  va 2s.  com*/
@Override
public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    setContentView(R.layout.activity_barcode_capture);

    ButterKnife.bind(this);

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

    setupToolbar(toolbar, getString(R.string.barcode_capture_activity), true,
            Constants.DEFAULT_ACTIVITY_TOOLBAR_COLORS);

    // 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();
    }

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

    Snackbar.make(mGraphicOverlay, R.string.capture_barcode_instructions, Snackbar.LENGTH_INDEFINITE).show();
}

---

From source file:com.github.chrisbanes.photoview.PhotoViewAttacher.java

public PhotoViewAttacher(ImageView imageView) {
    mImageView = imageView;//w  w  w  .j ava2s. c  o m
    imageView.setOnTouchListener(this);
    imageView.addOnLayoutChangeListener(this);

    if (imageView.isInEditMode()) {
        return;
    }

    mBaseRotation = 0.0f;

    // Create Gesture Detectors...
    mScaleDragDetector = new CustomGestureDetector(imageView.getContext(), this);

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

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

                @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;
                }
            });

    mGestureDetector.setOnDoubleTapListener(new GestureDetector.OnDoubleTapListener() {
        @Override
        public boolean onSingleTapConfirmed(MotionEvent e) {
            if (mOnClickListener != null) {
                mOnClickListener.onClick(mImageView);
            }
            final RectF displayRect = getDisplayRect();

            final float x = e.getX(), y = e.getY();

            if (mViewTapListener != null) {
                mViewTapListener.onViewTap(mImageView, x, y);
            }

            if (displayRect != null) {

                // Check to see if the user tapped on the photo
                if (displayRect.contains(x, y)) {

                    float xResult = (x - displayRect.left) / displayRect.width();
                    float yResult = (y - displayRect.top) / displayRect.height();

                    if (mPhotoTapListener != null) {
                        mPhotoTapListener.onPhotoTap(mImageView, xResult, yResult);
                    }
                    return true;
                } else {
                    if (mOutsidePhotoTapListener != null) {
                        mOutsidePhotoTapListener.onOutsidePhotoTap(mImageView);
                    }
                }
            }
            return false;
        }

        @Override
        public boolean onDoubleTap(MotionEvent ev) {
            try {
                float scale = getScale();
                float x = ev.getX();
                float y = ev.getY();

                if (scale < getMediumScale()) {
                    setScale(getMediumScale(), x, y, true);
                } else if (scale >= getMediumScale() && scale < getMaximumScale()) {
                    setScale(getMaximumScale(), x, y, true);
                } else {
                    setScale(getMinimumScale(), x, y, true);
                }
            } catch (ArrayIndexOutOfBoundsException e) {
                // Can sometimes happen when getX() and getY() is called
            }

            return true;
        }

        @Override
        public boolean onDoubleTapEvent(MotionEvent e) {
            // Wait for the confirmed onDoubleTap() instead
            return false;
        }
    });
}

---

From source file:com.cpen321.fridgemanager.OcrReader.OcrCaptureActivity.java

/**
 * Initializes the UI and creates the detector pipeline.
 *//* www .  ja va 2 s .  c o m*/
@Override
public void onCreate(Bundle bundle) {
    super.onCreate(bundle);
    setContentView(R.layout.ocr_capture);

    // Get Text
    if (getIntent().getStringArrayListExtra("texts") == null) {
        texts = new ArrayList<>();
    } else {
        texts = getIntent().getStringArrayListExtra("texts");
    }

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

    // Set good defaults for capturing text.
    boolean autoFocus = true;
    boolean 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 Scan After Seeing Text Overlays. Pinch to Zoom.",
            Snackbar.LENGTH_LONG).show();

    SharedPreferences settings = getSharedPreferences("prefs", 0);
    boolean firstCamera = settings.getBoolean("firstCamera", false);
    if (firstCamera == false) {
        SharedPreferences.Editor editor = settings.edit();
        editor.putBoolean("firstCamera", true);
        editor.commit();

        showFirstTimeDialog();
    }

}

---

From source file:com.gmartinsribeiro.qrcodereader.BarcodeCaptureActivity.java

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

    mToolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(mToolbar);

    if (Build.VERSION.SDK_INT >= 21) {
        Window window = getWindow();
        window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
        window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
        window.setStatusBarColor(getResources().getColor(R.color.blue700));
    }

    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, 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();
    }

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

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

---

From source file:it.jaschke.alexandria.BarcodeScanner.BarcodeCaptureActivity.java

/**
 * Initializes the UI and creates the detector pipeline.
 *//*from  ww w. j ava2s.  com*/
@Override
public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    setContentView(R.layout.barcode_capture);

    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, 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();
    }

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

    Snackbar.make(mGraphicOverlay, getApplicationContext().getString(R.string.tap_directions),
            Snackbar.LENGTH_INDEFINITE).show();
}

---

From source file:com.library.core.view.HorizontalListView.java

private synchronized void initView() {
    mLeftViewIndex = -1;// w  w  w .j  a  va  2  s . c om
    mRightViewIndex = 0;
    mDisplayOffset = 0;
    mCurrentX = 0;
    mNextX = 0;
    mFirstPosition = 0;
    mSpecificPosition = 0;
    mSpecificLeft = 0;
    mMaxX = Integer.MAX_VALUE;
    mMinX = 0;// Integer.MIN_VALUE;
    mScroller = new Scroller(getContext());
    mGesture = new GestureDetector(getContext(), mOnGesture);
    System.out.println("initView mMaxX = Integer.MAX_VALUE");
}

---

From source file:com.konker.konkersensors.BarcodeCaptureActivity.java

/**
 * Initializes the UI and creates the detector pipeline.
 *//*from w w w.ja v a 2 s. com*/
@Override
public void onCreate(Bundle icicle) {
    // Obtain the FirebaseAnalytics instance.
    mFirebaseAnalytics = FirebaseAnalytics.getInstance(this);
    //Bundle bundle = new Bundle();
    //bundle.putString(FirebaseAnalytics.Param.ITEM_ID, "BarcodeCaptureActivity");
    //bundle.putString(FirebaseAnalytics.Param.CONTENT_TYPE, "activity");
    //mFirebaseAnalytics.logEvent(FirebaseAnalytics.Event.SELECT_CONTENT, bundle);

    super.onCreate(icicle);
    setContentView(R.layout.barcode_capture);

    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, 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();
    }

    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();

}

---

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