Example usage for android.view ViewParent requestSendAccessibilityEvent

Introduction

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

Prototype

public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event);

Source Link

Document

Called by a child to request from its parent to send an AccessibilityEvent .

Usage

From source file:com.android.mail.utils.ViewUtils.java

/**
 * Convenience method for sending a {@link android.view.accessibility.AccessibilityEvent#TYPE_ANNOUNCEMENT}
 * {@link android.view.accessibility.AccessibilityEvent} to make an announcement which is related to some
 * sort of a context change for which none of the events representing UI transitions
 * is a good fit. For example, announcing a new page in a book. If accessibility
 * is not enabled this method does nothing.
 *
 * @param view view to perform the accessibility announcement
 * @param text The announcement text./* www .  ja  v  a  2s . c  o m*/
 */
public static void announceForAccessibility(View view, CharSequence text) {
    final AccessibilityManager accessibilityManager = (AccessibilityManager) view.getContext()
            .getSystemService(Context.ACCESSIBILITY_SERVICE);
    final ViewParent parent = view.getParent();
    if (accessibilityManager.isEnabled() && parent != null) {
        AccessibilityEvent event = AccessibilityEvent.obtain(AccessibilityEvent.TYPE_ANNOUNCEMENT);
        view.onInitializeAccessibilityEvent(event);
        event.getText().add(text);
        event.setContentDescription(null);
        parent.requestSendAccessibilityEvent(view, event);
    }
}

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From source file:com.android.inputmethod.accessibility.KeyboardAccessibilityDelegate.java

/**
 * Sends a window state change event with the specified text.
 *
 * @param text The text to send with the event.
 *///from   w  w  w .ja va 2 s.  c  om
protected void sendWindowStateChanged(final String text) {
    final AccessibilityEvent stateChange = AccessibilityEvent
            .obtain(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
    mKeyboardView.onInitializeAccessibilityEvent(stateChange);
    stateChange.getText().add(text);
    stateChange.setContentDescription(null);

    final ViewParent parent = mKeyboardView.getParent();
    if (parent != null) {
        parent.requestSendAccessibilityEvent(mKeyboardView, stateChange);
    }
}

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From source file:com.phonemetra.turbo.keyboard.accessibility.AccessibilityUtils.java

/**
 * Sends the specified text to the {@link AccessibilityManager} to be
 * spoken.//  www .j ava 2s .com
 *
 * @param view The source view.
 * @param text The text to speak.
 */
public void announceForAccessibility(final View view, final CharSequence text) {
    if (!mAccessibilityManager.isEnabled()) {
        return;
    }

    // The following is a hack to avoid using the heavy-weight TextToSpeech
    // class. Instead, we're just forcing a fake AccessibilityEvent into
    // the screen reader to make it speak.
    final AccessibilityEvent event = AccessibilityEvent.obtain();

    event.setPackageName(PACKAGE);
    event.setClassName(CLASS);
    event.setEventTime(SystemClock.uptimeMillis());
    event.setEnabled(true);
    event.getText().add(text);

    // Platforms starting at SDK version 16 (Build.VERSION_CODES.JELLY_BEAN) should use
    // announce events.
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        event.setEventType(AccessibilityEventCompat.TYPE_ANNOUNCEMENT);
    } else {
        event.setEventType(AccessibilityEvent.TYPE_VIEW_FOCUSED);
    }

    final ViewParent viewParent = view.getParent();
    if ((viewParent == null) || !(viewParent instanceof ViewGroup)) {
        return;
    }

    viewParent.requestSendAccessibilityEvent(view, event);
}

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From source file:com.onyx.latinime.accessibility.AccessibleKeyboardViewProxy.java

/**
 * Sends a window state change event with the specified text.
 *
 * @param text The text to send with the event.
 */// w  ww .j a v  a 2  s.  c  o  m
private void sendWindowStateChanged(final String text) {
    final AccessibilityEvent stateChange = AccessibilityEvent
            .obtain(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
    mView.onInitializeAccessibilityEvent(stateChange);
    stateChange.getText().add(text);
    stateChange.setContentDescription(null);

    final ViewParent parent = mView.getParent();
    if (parent != null) {
        parent.requestSendAccessibilityEvent(mView, stateChange);
    }
}

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From source file:com.android.inputmethod.accessibility.AccessibilityUtils.java

/**
 * Sends the specified text to the {@link AccessibilityManager} to be
 * spoken./*from  w  w  w. j a va 2 s . c  o  m*/
 *
 * @param view The source view.
 * @param text The text to speak.
 */
public void announceForAccessibility(final View view, final CharSequence text) {
    if (!mAccessibilityManager.isEnabled()) {
        Log.e(TAG, "Attempted to speak when accessibility was disabled!");
        return;
    }

    // The following is a hack to avoid using the heavy-weight TextToSpeech
    // class. Instead, we're just forcing a fake AccessibilityEvent into
    // the screen reader to make it speak.
    final AccessibilityEvent event = AccessibilityEvent.obtain();

    event.setPackageName(PACKAGE);
    event.setClassName(CLASS);
    event.setEventTime(SystemClock.uptimeMillis());
    event.setEnabled(true);
    event.getText().add(text);

    // Platforms starting at SDK version 16 (Build.VERSION_CODES.JELLY_BEAN) should use
    // announce events.
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        event.setEventType(AccessibilityEventCompat.TYPE_ANNOUNCEMENT);
    } else {
        event.setEventType(AccessibilityEvent.TYPE_VIEW_FOCUSED);
    }

    final ViewParent viewParent = view.getParent();
    if ((viewParent == null) || !(viewParent instanceof ViewGroup)) {
        Log.e(TAG, "Failed to obtain ViewParent in announceForAccessibility");
        return;
    }

    viewParent.requestSendAccessibilityEvent(view, event);
}

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