Example usage for android.view.accessibility AccessibilityManager sendAccessibilityEvent

Introduction

In this page you can find the example usage for android.view.accessibility AccessibilityManager sendAccessibilityEvent.

Prototype

public void sendAccessibilityEvent(AccessibilityEvent event) 

Source Link

Document

Sends an AccessibilityEvent .

Usage

From source file:com.klinker.deskclock.widget.multiwaveview.GlowPadView.java

private void handleMove(MotionEvent event) {
    int activeTarget = -1;
    final int historySize = event.getHistorySize();
    ArrayList<TargetDrawable> targets = mTargetDrawables;
    int ntargets = targets.size();
    float x = 0.0f;
    float y = 0.0f;
    int actionIndex = event.findPointerIndex(mPointerId);

    if (actionIndex == -1) {
        return; // no data for this pointer
    }//from w ww  . ja v a 2s. c om

    for (int k = 0; k < historySize + 1; k++) {
        float eventX = k < historySize ? event.getHistoricalX(actionIndex, k) : event.getX(actionIndex);
        float eventY = k < historySize ? event.getHistoricalY(actionIndex, k) : event.getY(actionIndex);
        // tx and ty are relative to wave center
        float tx = eventX - mWaveCenterX;
        float ty = eventY - mWaveCenterY;
        float touchRadius = (float) Math.sqrt(dist2(tx, ty));
        final float scale = touchRadius > mOuterRadius ? mOuterRadius / touchRadius : 1.0f;
        float limitX = tx * scale;
        float limitY = ty * scale;
        double angleRad = Math.atan2(-ty, tx);

        if (!mDragging) {
            trySwitchToFirstTouchState(eventX, eventY);
        }

        if (mDragging) {
            // For multiple targets, snap to the one that matches
            final float snapRadius = mOuterRadius - mSnapMargin;
            final float snapDistance2 = snapRadius * snapRadius;
            // Find first target in range
            for (int i = 0; i < ntargets; i++) {
                TargetDrawable target = targets.get(i);

                double targetMinRad = (i - 0.5) * 2 * Math.PI / ntargets;
                double targetMaxRad = (i + 0.5) * 2 * Math.PI / ntargets;
                if (target.isEnabled()) {
                    boolean angleMatches = (angleRad > targetMinRad && angleRad <= targetMaxRad)
                            || (angleRad + 2 * Math.PI > targetMinRad
                                    && angleRad + 2 * Math.PI <= targetMaxRad);
                    if (angleMatches && (dist2(tx, ty) > snapDistance2)) {
                        activeTarget = i;
                    }
                }
            }
        }
        x = limitX;
        y = limitY;
    }

    if (!mDragging) {
        return;
    }

    if (activeTarget != -1) {
        switchToState(STATE_SNAP, x, y);
        updateGlowPosition(x, y);
    } else {
        switchToState(STATE_TRACKING, x, y);
        updateGlowPosition(x, y);
    }

    if (mActiveTarget != activeTarget) {
        // Defocus the old target
        if (mActiveTarget != -1) {
            TargetDrawable target = targets.get(mActiveTarget);
            target.setState(TargetDrawable.STATE_INACTIVE);
        }
        // Focus the new target
        if (activeTarget != -1) {
            TargetDrawable target = targets.get(activeTarget);
            target.setState(TargetDrawable.STATE_FOCUSED);
            final AccessibilityManager accessibilityManager = (AccessibilityManager) getContext()
                    .getSystemService(Context.ACCESSIBILITY_SERVICE);
            if (accessibilityManager.isEnabled()) {
                String targetContentDescription = getTargetDescription(activeTarget);
                if (Build.VERSION.SDK_INT >= 16) {
                    announceForAccessibility(targetContentDescription);
                } else {
                    AccessibilityEvent acc_event = AccessibilityEvent
                            .obtain(AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED);
                    AccessibilityRecordCompat arc = new AccessibilityRecordCompat(acc_event);
                    arc.setSource(this);
                    acc_event.setClassName(this.getClass().getName());
                    acc_event.setPackageName(this.getContext().getPackageName());
                    acc_event.setEnabled(this.isEnabled());
                    acc_event.getText().add(targetContentDescription);
                    accessibilityManager.sendAccessibilityEvent(acc_event);
                }
            }
        }
    }
    mActiveTarget = activeTarget;
}

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From source file:com.android.calendar.event.EditEventView.java

private void sendAccessibilityEvent() {
    AccessibilityManager am = (AccessibilityManager) mActivity.getSystemService(Service.ACCESSIBILITY_SERVICE);
    if (!am.isEnabled() || mModel == null) {
        return;/*from  w  ww.j  av a  2 s .  com*/
    }
    StringBuilder b = new StringBuilder();
    addFieldsRecursive(b, mView);
    CharSequence msg = b.toString();

    AccessibilityEvent event = AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_FOCUSED);
    event.setClassName(getClass().getName());
    event.setPackageName(mActivity.getPackageName());
    event.getText().add(msg);
    event.setAddedCount(msg.length());

    am.sendAccessibilityEvent(event);
}

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From source file:com.aliyun.homeshell.Folder.java

public void sendCustomAccessibilityEvent(int type, String text) {
    AccessibilityManager accessibilityManager = (AccessibilityManager) getContext()
            .getSystemService(Context.ACCESSIBILITY_SERVICE);
    if (accessibilityManager.isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(type);
        onInitializeAccessibilityEvent(event);
        event.getText().add(text);/* ww w  . j a  v  a  2s.com*/
        accessibilityManager.sendAccessibilityEvent(event);
    }
}

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From source file:com.android.calendar.EventInfoFragment.java

private void sendAccessibilityEvent() {
    AccessibilityManager am = (AccessibilityManager) getActivity()
            .getSystemService(Service.ACCESSIBILITY_SERVICE);
    if (!am.isEnabled()) {
        return;/*from   w  w  w  .j a  v a 2s . c  o m*/
    }

    AccessibilityEvent event = AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_FOCUSED);
    event.setClassName(EventInfoFragment.class.getName());
    event.setPackageName(getActivity().getPackageName());
    List<CharSequence> text = event.getText();

    addFieldToAccessibilityEvent(text, mTitle, null);
    addFieldToAccessibilityEvent(text, mWhenDateTime, null);
    addFieldToAccessibilityEvent(text, mWhere, null);
    addFieldToAccessibilityEvent(text, null, mDesc);

    if (mResponseRadioGroup.getVisibility() == View.VISIBLE) {
        int id = mResponseRadioGroup.getCheckedRadioButtonId();
        if (id != View.NO_ID) {
            text.add(((TextView) getView().findViewById(R.id.response_label)).getText());
            text.add((((RadioButton) (mResponseRadioGroup.findViewById(id))).getText() + PERIOD_SPACE));
        }
    }

    am.sendAccessibilityEvent(event);
}

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From source file:de.vanita5.twittnuker.util.Utils.java

public static void announceForAccessibilityCompat(final Context context, final View view,
        final CharSequence text, final Class<?> cls) {
    final AccessibilityManager accessibilityManager = (AccessibilityManager) context
            .getSystemService(Context.ACCESSIBILITY_SERVICE);
    if (!accessibilityManager.isEnabled())
        return;/*from ww w  .jav a  2  s .  c o  m*/
    // Prior to SDK 16, announcements could only be made through FOCUSED
    // events. Jelly Bean (SDK 16) added support for speaking text verbatim
    // using the ANNOUNCEMENT event type.
    final int eventType;
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
        eventType = AccessibilityEvent.TYPE_VIEW_FOCUSED;
    } else {
        eventType = AccessibilityEventCompat.TYPE_ANNOUNCEMENT;
    }

    // Construct an accessibility event with the minimum recommended
    // attributes. An event without a class name or package may be dropped.
    final AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
    event.getText().add(text);
    event.setClassName(cls.getName());
    event.setPackageName(context.getPackageName());
    event.setSource(view);

    // Sends the event directly through the accessibility manager. If your
    // application only targets SDK 14+, you should just call
    // getParent().requestSendAccessibilityEvent(this, event);
    accessibilityManager.sendAccessibilityEvent(event);
}

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