Example usage for android.view MotionEvent ACTION_DOWN

Introduction

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

Prototype

int ACTION_DOWN

To view the source code for android.view MotionEvent ACTION_DOWN.

Click Source Link

Document

Constant for #getActionMasked : A pressed gesture has started, the motion contains the initial starting location.

Usage

From source file:cn.edu.zafu.easemob.CoverFlowLib.VelocityViewPager.java

@Override
public boolean onTouchEvent(MotionEvent event) {
    // give all the events to the gesture detector. I'm returning true here so the viewpager doesn't
    // get any events at all, I'm sure you could adjust this to make that not true.
    mGestureDetector.onTouchEvent(event);

    if (event.getAction() == MotionEvent.ACTION_DOWN) {
        downX = event.getX();//from  ww w  .  j av a 2 s  .c  om
    } else if (event.getAction() == MotionEvent.ACTION_UP) {
        onUp(event.getX() - downX);
    }
    return true;
}

---

From source file:akhil.alltrans.NestedScrollingMarkDownView.java

@Override
public boolean onTouchEvent(MotionEvent event) {
    boolean result = false;

    MotionEvent trackedEvent = MotionEvent.obtain(event);

    final int action = MotionEventCompat.getActionMasked(event);

    if (action == MotionEvent.ACTION_DOWN) {
        mNestedYOffset = 0;/*from  w w  w  . ja v  a  2  s  .  com*/
    }

    int y = (int) event.getY();

    event.offsetLocation(0, mNestedYOffset);

    switch (action) {
    case MotionEvent.ACTION_DOWN:
        mLastMotionY = y;
        startNestedScroll(ViewCompat.SCROLL_AXIS_VERTICAL);
        result = super.onTouchEvent(event);
        break;
    case MotionEvent.ACTION_MOVE:
        int deltaY = mLastMotionY - y;

        if (dispatchNestedPreScroll(0, deltaY, mScrollConsumed, mScrollOffset)) {
            deltaY -= mScrollConsumed[1];
            trackedEvent.offsetLocation(0, mScrollOffset[1]);
            mNestedYOffset += mScrollOffset[1];
        }

        int oldY = getScrollY();
        mLastMotionY = y - mScrollOffset[1];
        if (deltaY < 0) {
            int newScrollY = Math.max(0, oldY + deltaY);
            deltaY -= newScrollY - oldY;
            if (dispatchNestedScroll(0, newScrollY - deltaY, 0, deltaY, mScrollOffset)) {
                mLastMotionY -= mScrollOffset[1];
                trackedEvent.offsetLocation(0, mScrollOffset[1]);
                mNestedYOffset += mScrollOffset[1];
            }
        }

        result = super.onTouchEvent(trackedEvent);
        trackedEvent.recycle();
        break;
    case MotionEvent.ACTION_POINTER_DOWN:
    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL:
        stopNestedScroll();
        result = super.onTouchEvent(event);
        break;
    }
    return result;
}

---

From source file:com.aohuan.dodo.dispatchevent_about.dummy_demo.view1.NestedScrollWebView.java

@Override
public boolean onTouchEvent(MotionEvent event) {
    boolean result = false;

    MotionEvent trackedEvent = MotionEvent.obtain(event);

    final int action = MotionEventCompat.getActionMasked(event);

    if (action == MotionEvent.ACTION_DOWN) {
        mNestedYOffset = 0;//from   w ww .ja  v  a2s  . c  om
    }

    int y = (int) event.getY();

    event.offsetLocation(0, mNestedYOffset);

    switch (action) {
    case MotionEvent.ACTION_DOWN:
        mLastMotionY = y;
        startNestedScroll(ViewCompat.SCROLL_AXIS_VERTICAL);
        result = super.onTouchEvent(event);
        break;
    case MotionEvent.ACTION_MOVE:
        int deltaY = mLastMotionY - y;

        if (dispatchNestedPreScroll(0, deltaY, mScrollConsumed, mScrollOffset)) {
            deltaY -= mScrollConsumed[1];
            trackedEvent.offsetLocation(0, mScrollOffset[1]);
            mNestedYOffset += mScrollOffset[1];
        }

        int oldY = getScrollY();
        mLastMotionY = y - mScrollOffset[1];
        if (deltaY < 0) {
            int newScrollY = Math.max(0, oldY + deltaY);
            deltaY -= newScrollY - oldY;
            if (dispatchNestedScroll(0, newScrollY - deltaY, 0, deltaY, mScrollOffset)) {
                mLastMotionY -= mScrollOffset[1];
                trackedEvent.offsetLocation(0, mScrollOffset[1]);
                mNestedYOffset += mScrollOffset[1];
            }
        }

        trackedEvent.recycle();
        result = super.onTouchEvent(trackedEvent);
        break;
    case MotionEvent.ACTION_POINTER_DOWN:
    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL:
        stopNestedScroll();
        result = super.onTouchEvent(event);
        break;
    }
    return result;
}

---

From source file:com.ppdl.microphone.MainActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
    sp.edit().remove(Constant.EXTRA_INFILE).commit(); // infile?PCM?????

    Button recordButton = (Button) findViewById(R.id.buttonRecord);
    recordButton.setOnTouchListener(new View.OnTouchListener() {

        @Override//from w  ww .j  av  a  2 s .  co m
        public boolean onTouch(View v, MotionEvent event) {
            switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                startRecording();
                Toast.makeText(MainActivity.this, "Start Recording", Toast.LENGTH_SHORT).show();
                break;

            case MotionEvent.ACTION_UP:
                stopRecording();
                v.performClick();
                Toast.makeText(MainActivity.this, "Stop Recording", Toast.LENGTH_SHORT).show();
                break;

            default:
                break;
            }
            return false;
        }
    });

    Button playButton = (Button) findViewById(R.id.buttonPlay);
    playButton.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            startPlaying();
        }
    });

    Button stopButton = (Button) findViewById(R.id.buttonStop);
    stopButton.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            stopPlaying();
        }
    });

    Button recognizeButton = (Button) findViewById(R.id.buttonRecognize);
    recognizeButton.setOnTouchListener(new View.OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                Toast.makeText(MainActivity.this, "Start Recognizing", Toast.LENGTH_SHORT).show();
                speechRecognizer.cancel();
                Intent intent = new Intent();
                bindParams(intent);
                intent.putExtra("vad", "touch");
                speechRecognizer.startListening(intent);
                break;

            case MotionEvent.ACTION_UP:
                v.performClick();
                Toast.makeText(MainActivity.this, "Stop Recognizing", Toast.LENGTH_SHORT).show();
                speechRecognizer.stopListening();
                break;

            default:
                break;
            }
            return false;
        }
    });

    speechRecognizer = SpeechRecognizer.createSpeechRecognizer(this,
            new ComponentName(this, VoiceRecognitionService.class));
    speechRecognizer.setRecognitionListener(mRecognitionListner);
}

---

From source file:com.android.cts.uiautomator.TestGenericDetailFragment.java

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedState) {
    View rootView = inflater.inflate(R.layout.test_results_detail_fragment, container, false);
    if (mItem != null) {
        ((TextView) rootView.findViewById(R.id.testResultsTextView)).setText(mItem.mName);
    }/*from  w w  w .j a  v  a2s.  co m*/

    // listen to touch events to verify the multiPointerGesture APIs
    // Since API Level 18
    rootView.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {

            switch (event.getAction() & MotionEvent.ACTION_MASK) {
            case MotionEvent.ACTION_DOWN:
                // Reset any collected touch coordinate results on the primary touch down
                resetTouchResults();
                // collect this event
                collectStartAction(event, v, 0);
                break;

            case MotionEvent.ACTION_POINTER_DOWN:
                // collect this event
                collectStartAction(event, v, getPointerIndex(event));
                break;

            case MotionEvent.ACTION_POINTER_UP:
                // collect this event
                collectEndAction(event, v, getPointerIndex(event));
                break;

            case MotionEvent.ACTION_UP:
                // collect this event
                collectEndAction(event, v, 0);
                // on the primary touch up display results collected for all pointers
                displayTouchResults();
                break;
            }
            return true;
        }
    });

    return rootView;
}

---

From source file:akhil.alltrans.NestedScrollingListView.java

/**
 *
 * @see android.support.v4.widget.NestedScrollView#onTouchEvent(MotionEvent)
 *///from  w w w  .j  ava2s .  co  m
@Override
public boolean onTouchEvent(MotionEvent ev) {
    boolean returnValue = false;

    MotionEvent event = MotionEvent.obtain(ev);
    final int action = MotionEventCompat.getActionMasked(event);
    if (action == MotionEvent.ACTION_DOWN) {
        mNestedOffsetY = 0;
    }
    event.offsetLocation(0, mNestedOffsetY);
    int eventY = (int) event.getY();
    switch (action) {
    case MotionEvent.ACTION_MOVE:
        int deltaY = mLastY - eventY;
        // NestedPreScroll
        if (dispatchNestedPreScroll(0, deltaY, mScrollConsumed, mScrollOffset)) {
            deltaY -= mScrollConsumed[1];
            mLastY = eventY - mScrollOffset[1];
            event.offsetLocation(0, mScrollOffset[1]);
            mNestedOffsetY += mScrollOffset[1];
        }
        returnValue = super.onTouchEvent(event);

        // NestedScroll
        if (dispatchNestedScroll(0, mScrollOffset[1], 0, deltaY, mScrollOffset)) {
            event.offsetLocation(0, mScrollOffset[1]);
            mNestedOffsetY += mScrollOffset[1];
            mLastY -= mScrollOffset[1];
        }
        break;
    case MotionEvent.ACTION_DOWN:
        returnValue = super.onTouchEvent(event);
        mLastY = eventY;
        // start NestedScroll
        startNestedScroll(ViewCompat.SCROLL_AXIS_VERTICAL);
        break;
    case MotionEvent.ACTION_UP:
        // TODO: fling
        returnValue = super.onTouchEvent(event);
        break;
    case MotionEvent.ACTION_CANCEL:
        returnValue = super.onTouchEvent(event);
        // end NestedScroll
        stopNestedScroll();
        break;
    }
    return returnValue;
}

---

From source file:android.support.designox.widget.HeaderBehavior.java

@Override
public boolean onInterceptTouchEvent(CoordinatorLayout parent, V child, MotionEvent ev) {
    if (mTouchSlop < 0) {
        mTouchSlop = ViewConfiguration.get(parent.getContext()).getScaledTouchSlop();
    }//  ww  w.j av a 2  s  .  co  m

    final int action = ev.getAction();

    // Shortcut since we're being dragged
    if (action == MotionEvent.ACTION_MOVE && mIsBeingDragged) {
        return true;
    }

    switch (MotionEventCompat.getActionMasked(ev)) {
    case MotionEvent.ACTION_DOWN: {
        mIsBeingDragged = false;
        final int x = (int) ev.getX();
        final int y = (int) ev.getY();
        if (canDragView(child) && parent.isPointInChildBounds(child, x, y)) {
            mLastMotionY = y;
            mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
            ensureVelocityTracker();
        }
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        final int activePointerId = mActivePointerId;
        if (activePointerId == INVALID_POINTER) {
            // If we don't have a valid id, the touch down wasn't on content.
            break;
        }
        final int pointerIndex = MotionEventCompat.findPointerIndex(ev, activePointerId);
        if (pointerIndex == -1) {
            break;
        }

        final int y = (int) MotionEventCompat.getY(ev, pointerIndex);
        final int yDiff = Math.abs(y - mLastMotionY);
        if (yDiff > mTouchSlop) {
            mIsBeingDragged = true;
            mLastMotionY = y;
        }
        break;
    }

    case MotionEvent.ACTION_CANCEL:
    case MotionEvent.ACTION_UP: {
        mIsBeingDragged = false;
        mActivePointerId = INVALID_POINTER;
        if (mVelocityTracker != null) {
            mVelocityTracker.recycle();
            mVelocityTracker = null;
        }
        break;
    }
    }

    if (mVelocityTracker != null) {
        mVelocityTracker.addMovement(ev);
    }

    return mIsBeingDragged;
}

---

From source file:com.anysoftkeyboard.devicespecific.AskV8GestureDetector.java

@Override
public boolean onTouchEvent(@NonNull MotionEvent ev) {
    int singleFingerEventPointerId = mSingleFingerEventPointerId;

    //I want to keep track on the first finger (https://github.com/AnySoftKeyboard/AnySoftKeyboard/issues/300)
    switch (MotionEventCompat.getActionMasked(ev)) {
    case MotionEvent.ACTION_DOWN:
        if (ev.getPointerCount() == 1) {
            mSingleFingerEventPointerId = ev.getPointerId(0);
            singleFingerEventPointerId = mSingleFingerEventPointerId;
        }/*from  ww  w.j  a  v a2  s  .  c  o m*/
        break;
    case MotionEvent.ACTION_CANCEL:
    case MotionEvent.ACTION_UP:
        if (ev.getPointerCount() == 1)
            mSingleFingerEventPointerId = NOT_A_POINTER_ID;
    }
    try {
        //https://github.com/AnySoftKeyboard/AnySoftKeyboard/issues/26
        mScaleGestureDetector.onTouchEvent(ev);
    } catch (IllegalArgumentException e) {
        //I have nothing I can do here.
    } catch (ArrayIndexOutOfBoundsException e) {
        //I have nothing I can do here.
    }
    //I'm going to pass the event to the super, only if it is a single touch, and the event is for the first finger
    //https://github.com/AnySoftKeyboard/AnySoftKeyboard/issues/300
    if (ev.getPointerCount() == 1 && ev.getPointerId(0) == singleFingerEventPointerId)
        return super.onTouchEvent(ev);
    else
        return false;
}

---

From source file:co.adrianblan.fastbrush.MyGLSurfaceView.java

@Override
public boolean onTouchEvent(MotionEvent e) {
    // MotionEvent reports input details from the touch screen
    // and other input controls. In this case, you are only
    // interested in events where the touch position changed.

    switch (e.getAction()) {

    case MotionEvent.ACTION_DOWN:
        if (mVelocityTracker == null) {
            mVelocityTracker = VelocityTracker.obtain();
        } else {//from ww w .j  a  v a  2  s  .  c  o m
            mVelocityTracker.clear();
        }

        queueEvent(new Runnable() {
            @Override
            public void run() {
                mRenderer.touchHasStarted();
            }
        });

        // No break is intentional

    case MotionEvent.ACTION_MOVE:

        mVelocityTracker.addMovement(e);

        // Compute velocity in pixels per second
        mVelocityTracker.computeCurrentVelocity(1);

        final ArrayList<TouchData> touchDataList = new ArrayList<>(e.getHistorySize() + 1);
        Vector2 viewportPosition;

        Vector2 viewportVelocity = new Vector2(
                VelocityTrackerCompat.getXVelocity(mVelocityTracker, e.getActionIndex()),
                VelocityTrackerCompat.getYVelocity(mVelocityTracker, e.getActionIndex()));

        // Add previous touch coordinates
        for (int i = 0; i < e.getHistorySize(); i++) {
            viewportPosition = new Vector2(e.getHistoricalX(i), e.getHistoricalY(i));

            touchDataList.add(new TouchData(mRenderer.viewportToWorld(viewportPosition), viewportVelocity,
                    e.getHistoricalSize(i), e.getHistoricalPressure(i)));
        }

        // Add current touch coordinates
        viewportPosition = new Vector2(e.getX(), e.getY());
        touchDataList.add(new TouchData(mRenderer.viewportToWorld(viewportPosition), viewportVelocity,
                e.getSize(), e.getPressure()));

        // Ensure we call switchMode() on the OpenGL thread.
        // queueEvent() is a method of GLSurfaceView that will do this for us.
        queueEvent(new Runnable() {
            @Override
            public void run() {
                mRenderer.addTouchData(touchDataList);
            }
        });

        requestRender();
        break;

    case MotionEvent.ACTION_UP:

        queueEvent(new Runnable() {
            @Override
            public void run() {
                mRenderer.touchHasEnded();
            }
        });
        requestRender();
        break;
    }
    return true;
}

---

From source file:android.support.design.widget.HeaderBehavior.java

@Override
public boolean onInterceptTouchEvent(CoordinatorLayout parent, V child, MotionEvent ev) {
    if (mTouchSlop < 0) {
        mTouchSlop = ViewConfiguration.get(parent.getContext()).getScaledTouchSlop();
    }//from  w w w  .  ja  v  a 2s  . c  om

    final int action = ev.getAction();

    // Shortcut since we're being dragged
    if (action == MotionEvent.ACTION_MOVE && mIsBeingDragged) {
        return true;
    }

    switch (MotionEventCompat.getActionMasked(ev)) {
    case MotionEvent.ACTION_DOWN: {
        mIsBeingDragged = false;
        final int x = (int) ev.getX();
        final int y = (int) ev.getY();
        if (canDragView(child) && parent.isPointInChildBounds(child, x, y)) {
            mLastMotionY = y;
            mActivePointerId = ev.getPointerId(0);
            ensureVelocityTracker();
        }
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        final int activePointerId = mActivePointerId;
        if (activePointerId == INVALID_POINTER) {
            // If we don't have a valid id, the touch down wasn't on content.
            break;
        }
        final int pointerIndex = ev.findPointerIndex(activePointerId);
        if (pointerIndex == -1) {
            break;
        }

        final int y = (int) ev.getY(pointerIndex);
        final int yDiff = Math.abs(y - mLastMotionY);
        if (yDiff > mTouchSlop) {
            mIsBeingDragged = true;
            mLastMotionY = y;
        }
        break;
    }

    case MotionEvent.ACTION_CANCEL:
    case MotionEvent.ACTION_UP: {
        mIsBeingDragged = false;
        mActivePointerId = INVALID_POINTER;
        if (mVelocityTracker != null) {
            mVelocityTracker.recycle();
            mVelocityTracker = null;
        }
        break;
    }
    }

    if (mVelocityTracker != null) {
        mVelocityTracker.addMovement(ev);
    }

    return mIsBeingDragged;
}

---

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