Example usage for android.content Context ACCESSIBILITY

Introduction

In this page you can find the example usage for android.content Context ACCESSIBILITY_SERVICE.

Prototype

String ACCESSIBILITY_SERVICE

To view the source code for android.content Context ACCESSIBILITY_SERVICE.

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Document

Use with #getSystemService(String) to retrieve a android.view.accessibility.AccessibilityManager for giving the user feedback for UI events through the registered event listeners.

Usage

From source file:com.partynetwork.iparty.app.widget.crouton.Manager.java

/**
 * Generates and dispatches an SDK-specific spoken announcement.
 * <p>//from   w ww  .ja  va 2 s .co m
 * For backwards compatibility, we're constructing an event from scratch
 * using the appropriate event type. If your application only targets SDK
 * 16+, you can just call View.announceForAccessibility(CharSequence).
 * </p>
 * <p/>
 * note: AccessibilityManager is only available from API lvl 4.
 * <p/>
 * Adapted from https://http://eyes-free.googlecode.com/files/
 * accessibility_codelab_demos_v2_src.zip via
 * https://github.com/coreform/android-formidable-validation
 * 
 * @param context
 *            Used to get {@link AccessibilityManager}
 * @param text
 *            The text to announce.
 */
public static void announceForAccessibilityCompat(Context context, CharSequence text) {
    if (Build.VERSION.SDK_INT >= 4) {
        AccessibilityManager accessibilityManager = null;
        if (null != context) {
            accessibilityManager = (AccessibilityManager) context
                    .getSystemService(Context.ACCESSIBILITY_SERVICE);
        }
        if (null == accessibilityManager || !accessibilityManager.isEnabled()) {
            return;
        }

        // 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 < 16) {
            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(Manager.class.getName());
        event.setPackageName(context.getPackageName());

        // 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);
    }
}

From source file:com.prashant.custom.widget.crouton.Manager.java

/**
 * Generates and dispatches an SDK-specific spoken announcement.
 * <p>//from  www  .  jav  a 2s . co  m
 * For backwards compatibility, we're constructing an event from scratch
 * using the appropriate event type. If your application only targets SDK
 * 16+, you can just call View.announceForAccessibility(CharSequence).
 * </p>
 * <p/>
 * note: AccessibilityManager is only available from API lvl 4.
 * <p/>
 * Adapted from https://http://eyes-free.googlecode.com/files/accessibility_codelab_demos_v2_src.zip
 * via https://github.com/coreform/android-formidable-validation
 *
 * @param context
 *   Used to get {@link AccessibilityManager}
 * @param text
 *   The text to announce.
 */
public static void announceForAccessibilityCompat(Context context, CharSequence text) {
    if (Build.VERSION.SDK_INT >= 4) {
        AccessibilityManager accessibilityManager = (AccessibilityManager) context
                .getSystemService(Context.ACCESSIBILITY_SERVICE);
        if (!accessibilityManager.isEnabled()) {
            return;
        }

        final int eventType;
        eventType = AccessibilityEvent.TYPE_VIEW_FOCUSED;

        // 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(Manager.class.getName());
        event.setPackageName(context.getPackageName());

        // 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);
    }
}

From source file:com.elephant.widget.crouton.Manager.java

/**
 * Generates and dispatches an SDK-specific spoken announcement.
 * <p>/*from  w  w w .  j  ava 2 s  .  co  m*/
 * For backwards compatibility, we're constructing an event from scratch
 * using the appropriate event type. If your application only targets SDK
 * 16+, you can just call View.announceForAccessibility(CharSequence).
 * </p>
 * <p/>
 * note: AccessibilityManager is only available from API lvl 4.
 * <p/>
 * Adapted from https://http://eyes-free.googlecode.com/files/
 * accessibility_codelab_demos_v2_src.zip via
 * https://github.com/coreform/android-formidable-validation
 * 
 * @param context
 *            Used to get {@link AccessibilityManager}
 * @param text
 *            The text to announce.
 */
public static void announceForAccessibilityCompat(Context context, CharSequence text) {
    if (Build.VERSION.SDK_INT >= 4) {
        AccessibilityManager accessibilityManager = (AccessibilityManager) context
                .getSystemService(Context.ACCESSIBILITY_SERVICE);
        if (!accessibilityManager.isEnabled()) {
            return;
        }

        // 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 < 16) {
            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(Manager.class.getName());
        event.setPackageName(context.getPackageName());

        // 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);
    }
}

From source file:com.arta.lib.widget.crouton.Manager.java

/**
 * Generates and dispatches an SDK-specific spoken announcement.
 * <p>//ww w .j a  v a2 s  .com
 * For backwards compatibility, we're constructing an event from scratch
 * using the appropriate event type. If your application only targets SDK
 * 16+, you can just call View.announceForAccessibility(CharSequence).
 * </p>
 * <p/>
 * note: AccessibilityManager is only available from API lvl 4.
 * <p/>
 * Adapted from https://http://eyes-free.googlecode.com/files/accessibility_codelab_demos_v2_src.zip
 * via https://github.com/coreform/android-formidable-validation
 *
 * @param context
 *     Used to get {@link AccessibilityManager}
 * @param text
 *     The text to announce.
 */
public static void announceForAccessibilityCompat(Context context, CharSequence text) {
    if (Build.VERSION.SDK_INT >= 4) {
        AccessibilityManager accessibilityManager = null;
        if (null != context) {
            accessibilityManager = (AccessibilityManager) context
                    .getSystemService(Context.ACCESSIBILITY_SERVICE);
        }
        if (null == accessibilityManager || !accessibilityManager.isEnabled()) {
            return;
        }

        // 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 < 16) {
            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(Manager.class.getName());
        event.setPackageName(context.getPackageName());

        // 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);
    }
}

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

private void switchToState(int state, float x, float y) {
    switch (state) {
    case STATE_IDLE:
        deactivateTargets();//  w  w  w  . ja v  a2 s  .  c  om
        hideGlow(0, 0, 0.0f, null);
        startBackgroundAnimation(0, 0.0f);
        mHandleDrawable.setState(TargetDrawable.STATE_INACTIVE);
        mHandleDrawable.setAlpha(1.0f);
        break;

    case STATE_START:
        startBackgroundAnimation(0, 0.0f);
        break;

    case STATE_FIRST_TOUCH:
        mHandleDrawable.setAlpha(0.0f);
        deactivateTargets();
        showTargets(true);
        startBackgroundAnimation(INITIAL_SHOW_HANDLE_DURATION, 1.0f);
        setGrabbedState(OnTriggerListener.CENTER_HANDLE);

        final AccessibilityManager accessibilityManager = (AccessibilityManager) getContext()
                .getSystemService(Context.ACCESSIBILITY_SERVICE);
        if (accessibilityManager.isEnabled()) {
            announceTargets();
        }
        break;

    case STATE_TRACKING:
        mHandleDrawable.setAlpha(0.0f);
        showGlow(REVEAL_GLOW_DURATION, REVEAL_GLOW_DELAY, 1.0f, null);
        break;

    case STATE_SNAP:
        // TODO: Add transition states (see list_selector_background_transition.xml)
        mHandleDrawable.setAlpha(0.0f);
        showGlow(REVEAL_GLOW_DURATION, REVEAL_GLOW_DELAY, 0.0f, null);
        break;

    case STATE_FINISH:
        doFinish();
        break;
    }
}

From source file:com.actionbarsherlock.internal.widget.IcsProgressBar.java

/**
 * @hide//  w  ww.  j a  v a2  s  .c om
 */
public IcsProgressBar(Context context, AttributeSet attrs, int defStyle, int styleRes) {
    super(context, attrs, defStyle);
    mUiThreadId = Thread.currentThread().getId();
    initProgressBar();

    TypedArray a = context.obtainStyledAttributes(attrs, /*R.styleable.*/ProgressBar, defStyle, styleRes);

    mNoInvalidate = true;

    Drawable drawable = a.getDrawable(/*R.styleable.*/ProgressBar_progressDrawable);
    if (drawable != null) {
        drawable = tileify(drawable, false);
        // Calling this method can set mMaxHeight, make sure the corresponding
        // XML attribute for mMaxHeight is read after calling this method
        setProgressDrawable(drawable);
    }

    mDuration = a.getInt(/*R.styleable.*/ProgressBar_indeterminateDuration, mDuration);

    mMinWidth = a.getDimensionPixelSize(/*R.styleable.*/ProgressBar_minWidth, mMinWidth);
    mMaxWidth = a.getDimensionPixelSize(/*R.styleable.*/ProgressBar_maxWidth, mMaxWidth);
    mMinHeight = a.getDimensionPixelSize(/*R.styleable.*/ProgressBar_minHeight, mMinHeight);
    mMaxHeight = a.getDimensionPixelSize(/*R.styleable.*/ProgressBar_maxHeight, mMaxHeight);

    mBehavior = a.getInt(/*R.styleable.*/ProgressBar_indeterminateBehavior, mBehavior);

    final int resID = a.getResourceId(/*com.android.internal.R.styleable.*/ProgressBar_interpolator,
            android.R.anim.linear_interpolator); // default to linear interpolator
    if (resID > 0) {
        setInterpolator(context, resID);
    }

    setMax(a.getInt(/*R.styleable.*/ProgressBar_max, mMax));

    setProgress(a.getInt(/*R.styleable.*/ProgressBar_progress, mProgress));

    setSecondaryProgress(a.getInt(/*R.styleable.*/ProgressBar_secondaryProgress, mSecondaryProgress));

    drawable = a.getDrawable(/*R.styleable.*/ProgressBar_indeterminateDrawable);
    if (drawable != null) {
        drawable = tileifyIndeterminate(drawable);
        setIndeterminateDrawable(drawable);
    }

    mOnlyIndeterminate = a.getBoolean(/*R.styleable.*/ProgressBar_indeterminateOnly, mOnlyIndeterminate);

    mNoInvalidate = false;

    setIndeterminate(
            mOnlyIndeterminate || a.getBoolean(/*R.styleable.*/ProgressBar_indeterminate, mIndeterminate));

    mAnimationResolution = a.getInteger(/*R.styleable.*/ProgressBar_animationResolution, ANIMATION_RESOLUTION);

    a.recycle();

    mAccessibilityManager = (AccessibilityManager) context.getSystemService(Context.ACCESSIBILITY_SERVICE);
}

From source file:androidx.media.widget.VideoView2.java

public VideoView2(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
    super(context, attrs, defStyleAttr, defStyleRes);

    mVideoWidth = 0;/*  w w w .  j a  v  a  2  s. com*/
    mVideoHeight = 0;
    mSpeed = 1.0f;
    mFallbackSpeed = mSpeed;
    mSelectedSubtitleTrackIndex = INVALID_TRACK_INDEX;
    // TODO: add attributes to get this value.
    mShowControllerIntervalMs = DEFAULT_SHOW_CONTROLLER_INTERVAL_MS;

    mAccessibilityManager = (AccessibilityManager) context.getSystemService(Context.ACCESSIBILITY_SERVICE);

    mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
    mAudioAttributes = new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_MEDIA)
            .setContentType(AudioAttributes.CONTENT_TYPE_MOVIE).build();
    setFocusable(true);
    setFocusableInTouchMode(true);
    requestFocus();

    // TODO: try to keep a single child at a time rather than always having both.
    mTextureView = new VideoTextureView(getContext());
    mSurfaceView = new VideoSurfaceView(getContext());
    LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
    mTextureView.setLayoutParams(params);
    mSurfaceView.setLayoutParams(params);
    mTextureView.setSurfaceListener(this);
    mSurfaceView.setSurfaceListener(this);

    addView(mTextureView);
    addView(mSurfaceView);

    // mSubtitleView = new SubtitleView(getContext());
    // mSubtitleView.setLayoutParams(params);
    // mSubtitleView.setBackgroundColor(0);
    // addView(mSubtitleView);

    boolean enableControlView = (attrs == null) || attrs
            .getAttributeBooleanValue("http://schemas.android.com/apk/res/android", "enableControlView", true);
    if (enableControlView) {
        mMediaControlView = new MediaControlView2(getContext());
    }

    mSubtitleEnabled = (attrs == null) || attrs
            .getAttributeBooleanValue("http://schemas.android.com/apk/res/android", "enableSubtitle", false);

    // TODO: Choose TextureView when SurfaceView cannot be created.
    // Choose surface view by default
    int viewType = (attrs == null) ? VideoView2.VIEW_TYPE_SURFACEVIEW
            : attrs.getAttributeIntValue("http://schemas.android.com/apk/res/android", "viewType",
                    VideoView2.VIEW_TYPE_SURFACEVIEW);
    if (viewType == VideoView2.VIEW_TYPE_SURFACEVIEW) {
        Log.d(TAG, "viewType attribute is surfaceView.");
        mTextureView.setVisibility(View.GONE);
        mSurfaceView.setVisibility(View.VISIBLE);
        mCurrentView = mSurfaceView;
    } else if (viewType == VideoView2.VIEW_TYPE_TEXTUREVIEW) {
        Log.d(TAG, "viewType attribute is textureView.");
        mTextureView.setVisibility(View.VISIBLE);
        mSurfaceView.setVisibility(View.GONE);
        mCurrentView = mTextureView;
    }

    // TODO (b/77158231)
    /*
    MediaRouteSelector.Builder builder = new MediaRouteSelector.Builder();
    builder.addControlCategory(MediaControlIntent.CATEGORY_REMOTE_PLAYBACK);
    builder.addControlCategory(MediaControlIntent.CATEGORY_LIVE_AUDIO);
    builder.addControlCategory(MediaControlIntent.CATEGORY_LIVE_VIDEO);
    mRouteSelector = builder.build();
    */
}

From source file:com.android.incallui.widget.multiwaveview.GlowPadView.java

private void switchToState(int state, float x, float y) {
    switch (state) {
    case STATE_IDLE:
        deactivateTargets();//from  ww w  .  j a va 2  s  .c om
        hideGlow(0, 0, 0.0f, null);
        startBackgroundAnimation(0, 0.0f);
        mHandleDrawable.setState(TargetDrawable.STATE_INACTIVE);
        mHandleDrawable.setAlpha(1.0f);
        break;

    case STATE_START:
        startBackgroundAnimation(0, 0.0f);
        break;

    case STATE_FIRST_TOUCH:
        mHandleDrawable.setAlpha(0.0f);
        deactivateTargets();
        showTargets(true);
        startBackgroundAnimation(INITIAL_SHOW_HANDLE_DURATION, 1.0f);
        setGrabbedState(OnTriggerListener.CENTER_HANDLE);

        final AccessibilityManager accessibilityManager = (AccessibilityManager) getContext()
                .getSystemService(Context.ACCESSIBILITY_SERVICE);
        if (accessibilityManager.isEnabled()) {
            announceTargets();
        }
        break;

    case STATE_TRACKING:
        mHandleDrawable.setAlpha(0.0f);
        break;

    case STATE_SNAP:
        // TODO: Add transition states (see list_selector_background_transition.xml)
        mHandleDrawable.setAlpha(0.0f);
        showGlow(REVEAL_GLOW_DURATION, REVEAL_GLOW_DELAY, 0.0f, null);
        break;

    case STATE_FINISH:
        doFinish();
        break;
    }
}

From source file:cc.flydev.launcher.Folder.java

private 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);//from w w w  .  j av a  2 s .  com
        accessibilityManager.sendAccessibilityEvent(event);
    }
}

From source file:com.android.launcher2.PagedView.java

protected boolean computeScrollHelper() {
    if (mScroller.computeScrollOffset()) {
        // Don't bother scrolling if the page does not need to be moved
        if (getScrollX() != mScroller.getCurrX() || getScrollY() != mScroller.getCurrY()
                || mOverScrollX != mScroller.getCurrX()) {
            scrollTo(mScroller.getCurrX(), mScroller.getCurrY());
        }/* www.ja  v a2 s.  c  o m*/
        invalidate();
        return true;
    } else if (mNextPage != INVALID_PAGE) {
        mCurrentPage = Math.max(0, Math.min(mNextPage, getPageCount() - 1));
        mNextPage = INVALID_PAGE;
        notifyPageSwitchListener();

        // Load the associated pages if necessary
        if (mDeferLoadAssociatedPagesUntilScrollCompletes) {
            loadAssociatedPages(mCurrentPage);
            mDeferLoadAssociatedPagesUntilScrollCompletes = false;
        }

        // We don't want to trigger a page end moving unless the page has settled
        // and the user has stopped scrolling
        if (mTouchState == TOUCH_STATE_REST) {
            pageEndMoving();
        }

        // Notify the user when the page changes
        AccessibilityManager accessibilityManager = (AccessibilityManager) getContext()
                .getSystemService(Context.ACCESSIBILITY_SERVICE);
        if (accessibilityManager.isEnabled()) {
            AccessibilityEvent ev = AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_SCROLLED);
            ev.getText().add(getCurrentPageDescription());
            sendAccessibilityEventUnchecked(ev);
        }
        return true;
    }
    return false;
}

Example usage for android.content Context ACCESSIBILITY_SERVICE

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