android.view.MotionEvent#isFromSource ( )源码实例Demo

下面列出了android.view.MotionEvent#isFromSource ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： android_9.0.0_r45 文件： IInputMethodSessionWrapper.java

@Override
public void onInputEvent(InputEvent event, int displayId) {
    if (mInputMethodSession == null) {
        // The session has been finished.
        finishInputEvent(event, false);
        return;
    }

    final int seq = event.getSequenceNumber();
    mPendingEvents.put(seq, event);
    if (event instanceof KeyEvent) {
        KeyEvent keyEvent = (KeyEvent)event;
        mInputMethodSession.dispatchKeyEvent(seq, keyEvent, this);
    } else {
        MotionEvent motionEvent = (MotionEvent)event;
        if (motionEvent.isFromSource(InputDevice.SOURCE_CLASS_TRACKBALL)) {
            mInputMethodSession.dispatchTrackballEvent(seq, motionEvent, this);
        } else {
            mInputMethodSession.dispatchGenericMotionEvent(seq, motionEvent, this);
        }
    }
}

源代码2 项目： android_9.0.0_r45 文件： ActivityView.java

@Override
public boolean onGenericMotionEvent(MotionEvent event) {
    if (event.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) {
        if (injectInputEvent(event)) {
            return true;
        }
    }
    return super.onGenericMotionEvent(event);
}

源代码3 项目： android_9.0.0_r45 文件： HorizontalScrollView.java

@Override
public boolean onGenericMotionEvent(MotionEvent event) {
    switch (event.getAction()) {
        case MotionEvent.ACTION_SCROLL: {
            if (!mIsBeingDragged) {
                final float axisValue;
                if (event.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) {
                    if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) {
                        axisValue = -event.getAxisValue(MotionEvent.AXIS_VSCROLL);
                    } else {
                        axisValue = event.getAxisValue(MotionEvent.AXIS_HSCROLL);
                    }
                } else if (event.isFromSource(InputDevice.SOURCE_ROTARY_ENCODER)) {
                    axisValue = event.getAxisValue(MotionEvent.AXIS_SCROLL);
                } else {
                    axisValue = 0;
                }

                final int delta = Math.round(axisValue * mHorizontalScrollFactor);
                if (delta != 0) {
                    final int range = getScrollRange();
                    int oldScrollX = mScrollX;
                    int newScrollX = oldScrollX + delta;
                    if (newScrollX < 0) {
                        newScrollX = 0;
                    } else if (newScrollX > range) {
                        newScrollX = range;
                    }
                    if (newScrollX != oldScrollX) {
                        super.scrollTo(newScrollX, mScrollY);
                        return true;
                    }
                }
            }
        }
    }
    return super.onGenericMotionEvent(event);
}

源代码4 项目： android_9.0.0_r45 文件： ScrollView.java

@Override
public boolean onGenericMotionEvent(MotionEvent event) {
    switch (event.getAction()) {
        case MotionEvent.ACTION_SCROLL:
            final float axisValue;
            if (event.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) {
                axisValue = event.getAxisValue(MotionEvent.AXIS_VSCROLL);
            } else if (event.isFromSource(InputDevice.SOURCE_ROTARY_ENCODER)) {
                axisValue = event.getAxisValue(MotionEvent.AXIS_SCROLL);
            } else {
                axisValue = 0;
            }

            final int delta = Math.round(axisValue * mVerticalScrollFactor);
            if (delta != 0) {
                final int range = getScrollRange();
                int oldScrollY = mScrollY;
                int newScrollY = oldScrollY - delta;
                if (newScrollY < 0) {
                    newScrollY = 0;
                } else if (newScrollY > range) {
                    newScrollY = range;
                }
                if (newScrollY != oldScrollY) {
                    super.scrollTo(mScrollX, newScrollY);
                    return true;
                }
            }
            break;
    }

    return super.onGenericMotionEvent(event);
}

源代码5 项目： android_9.0.0_r45 文件： SystemGesturesPointerEventListener.java

@Override
public void onPointerEvent(MotionEvent event) {
    if (mGestureDetector != null && event.isTouchEvent()) {
        mGestureDetector.onTouchEvent(event);
    }
    switch (event.getActionMasked()) {
        case MotionEvent.ACTION_DOWN:
            mSwipeFireable = true;
            mDebugFireable = true;
            mDownPointers = 0;
            captureDown(event, 0);
            if (mMouseHoveringAtEdge) {
                mMouseHoveringAtEdge = false;
                mCallbacks.onMouseLeaveFromEdge();
            }
            mCallbacks.onDown();
            break;
        case MotionEvent.ACTION_POINTER_DOWN:
            captureDown(event, event.getActionIndex());
            if (mDebugFireable) {
                mDebugFireable = event.getPointerCount() < 5;
                if (!mDebugFireable) {
                    if (DEBUG) Slog.d(TAG, "Firing debug");
                    mCallbacks.onDebug();
                }
            }
            break;
        case MotionEvent.ACTION_MOVE:
            if (mSwipeFireable) {
                final int swipe = detectSwipe(event);
                mSwipeFireable = swipe == SWIPE_NONE;
                if (swipe == SWIPE_FROM_TOP) {
                    if (DEBUG) Slog.d(TAG, "Firing onSwipeFromTop");
                    mCallbacks.onSwipeFromTop();
                } else if (swipe == SWIPE_FROM_BOTTOM) {
                    if (DEBUG) Slog.d(TAG, "Firing onSwipeFromBottom");
                    mCallbacks.onSwipeFromBottom();
                } else if (swipe == SWIPE_FROM_RIGHT) {
                    if (DEBUG) Slog.d(TAG, "Firing onSwipeFromRight");
                    mCallbacks.onSwipeFromRight();
                } else if (swipe == SWIPE_FROM_LEFT) {
                    if (DEBUG) Slog.d(TAG, "Firing onSwipeFromLeft");
                    mCallbacks.onSwipeFromLeft();
                }
            }
            break;
        case MotionEvent.ACTION_HOVER_MOVE:
            if (event.isFromSource(InputDevice.SOURCE_MOUSE)) {
                if (!mMouseHoveringAtEdge && event.getY() == 0) {
                    mCallbacks.onMouseHoverAtTop();
                    mMouseHoveringAtEdge = true;
                } else if (!mMouseHoveringAtEdge && event.getY() >= screenHeight - 1) {
                    mCallbacks.onMouseHoverAtBottom();
                    mMouseHoveringAtEdge = true;
                } else if (mMouseHoveringAtEdge
                        && (event.getY() > 0 && event.getY() < screenHeight - 1)) {
                    mCallbacks.onMouseLeaveFromEdge();
                    mMouseHoveringAtEdge = false;
                }
            }
            break;
        case MotionEvent.ACTION_UP:
        case MotionEvent.ACTION_CANCEL:
            mSwipeFireable = false;
            mDebugFireable = false;
            mCallbacks.onUpOrCancel();
            break;
        default:
            if (DEBUG) Slog.d(TAG, "Ignoring " + event);
    }
}

方法所在类

android.view.MotionEvent