Java Code Examples for android.view.accessibility.AccessibilityEvent#setSource()

private AccessibilityEvent buildAccessibilityEvent(int virtualViewId, int eventType) {
    // If we don't have any frame info, then the virtual hierarchy
    // doesn't exist in the view of the Android framework, so should
    // never send any events.
    if (!mAccessibilityManager.isEnabled() || mNativeObj == 0
            || !isFrameInfoInitialized()) {
        return null;
    }

    // This is currently needed if we want Android to visually highlight
    // the item that has accessibility focus. In practice, this doesn't seem to slow
    // things down, because it's only called when the accessibility focus moves.
    // TODO(dmazzoni): remove this if/when Android framework fixes bug.
    mView.postInvalidate();

    final AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
    event.setPackageName(mContentViewCore.getContext().getPackageName());
    event.setSource(mView, virtualViewId);
    if (!nativePopulateAccessibilityEvent(mNativeObj, event, virtualViewId, eventType)) {
        event.recycle();
        return null;
    }
    return event;
}
 

private void sendAccessibilityEvent(int virtualViewId, int eventType) {
    if (!mAccessibilityManager.isEnabled() || mNativeObj == 0) return;

    final AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
    event.setPackageName(mContentViewCore.getContext().getPackageName());
    int rootId = nativeGetRootId(mNativeObj);
    if (virtualViewId == rootId) {
        virtualViewId = View.NO_ID;
    }
    event.setSource(mView, virtualViewId);
    if (!nativePopulateAccessibilityEvent(mNativeObj, event, virtualViewId, eventType)) return;

    // This is currently needed if we want Android to draw the yellow box around
    // the item that has accessibility focus. In practice, this doesn't seem to slow
    // things down, because it's only called when the accessibility focus moves.
    // TODO(dmazzoni): remove this if/when Android framework fixes bug.
    mContentViewCore.getContainerView().postInvalidate();

    mContentViewCore.getContainerView().requestSendAccessibilityEvent(mView, event);
}
 

private void sendAccessibilityEvent(int virtualViewId, int eventType) {
    if (!mAccessibilityManager.isEnabled() || mNativeObj == 0) return;

    final AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
    event.setPackageName(mContentViewCore.getContext().getPackageName());
    int rootId = nativeGetRootId(mNativeObj);
    if (virtualViewId == rootId) {
        virtualViewId = View.NO_ID;
    }
    event.setSource(mView, virtualViewId);
    if (!nativePopulateAccessibilityEvent(mNativeObj, event, virtualViewId, eventType)) return;

    // This is currently needed if we want Android to draw the yellow box around
    // the item that has accessibility focus. In practice, this doesn't seem to slow
    // things down, because it's only called when the accessibility focus moves.
    // TODO(dmazzoni): remove this if/when Android framework fixes bug.
    mContentViewCore.getContainerView().postInvalidate();

    mContentViewCore.getContainerView().requestSendAccessibilityEvent(mView, event);
}
 

private void sendAccessibilityEvent(int eventType, int virtualId) {
    AccessibilityEvent event = AccessibilityEvent.obtain();
    event.setEventType(eventType);
    event.setSource(this, virtualId);
    event.setEnabled(true);
    event.setPackageName(getContext().getPackageName());
    if (VERBOSE) {
        Log.v(TAG, "sendAccessibilityEvent(" + eventType + ", " + virtualId + "): " + event);
    }
    getContext().getSystemService(AccessibilityManager.class).sendAccessibilityEvent(event);
}
 

/**
 * Updates the view of this NumberPicker. If displayValues were specified in
 * the string corresponding to the index specified by the current value will
 * be returned. Otherwise, the formatter specified in {@link #setFormatter}
 * will be used to format the number.
 *
 * @return Whether the text was updated.
 */
private boolean updateInputTextView() {
    /*
     * If we don't have displayed values then use the current number else
     * find the correct value in the displayed values for the current
     * number.
     */
    String text = (mDisplayedValues == null) ? formatNumber(mValue)
            : mDisplayedValues[mValue - mMinValue];
    if (!TextUtils.isEmpty(text)) {
        CharSequence beforeText = mInputText.getText();
        if (!text.equals(beforeText.toString())) {
            mInputText.setText(text);
            if (AccessibilityManager.getInstance(mContext).isEnabled()) {
                AccessibilityEvent event = AccessibilityEvent.obtain(
                        AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
                mInputText.onInitializeAccessibilityEvent(event);
                mInputText.onPopulateAccessibilityEvent(event);
                event.setFromIndex(0);
                event.setRemovedCount(beforeText.length());
                event.setAddedCount(text.length());
                event.setBeforeText(beforeText);
                event.setSource(NumberPicker.this,
                        AccessibilityNodeProviderImpl.VIRTUAL_VIEW_ID_INPUT);
                requestSendAccessibilityEvent(NumberPicker.this, event);
            }
            return true;
        }
    }

    return false;
}
 

private void sendAccessibilityEventForVirtualText(int eventType) {
    if (AccessibilityManager.getInstance(mContext).isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        mInputText.onInitializeAccessibilityEvent(event);
        mInputText.onPopulateAccessibilityEvent(event);
        event.setSource(NumberPicker.this, VIRTUAL_VIEW_ID_INPUT);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}
 

private void sendAccessibilityEventForVirtualButton(int virtualViewId, int eventType,
        String text) {
    if (AccessibilityManager.getInstance(mContext).isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        event.setClassName(Button.class.getName());
        event.setPackageName(mContext.getPackageName());
        event.getText().add(text);
        event.setEnabled(NumberPicker.this.isEnabled());
        event.setSource(NumberPicker.this, virtualViewId);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}
 

private void sendAccessibilityEvent(int eventType, int virtualId) {
    AccessibilityEvent event = AccessibilityEvent.obtain();
    event.setEventType(eventType);
    event.setSource(this, virtualId);
    event.setEnabled(true);
    event.setPackageName(getContext().getPackageName());
    if (VERBOSE) {
        Log.v(TAG, "sendAccessibilityEvent(" + eventType + ", " + virtualId + "): " + event);
    }
    getContext().getSystemService(AccessibilityManager.class).sendAccessibilityEvent(event);
}
 

private void sendAccessibilityEventForVirtualText(int eventType) {
    if (((AccessibilityManager) getContext().getSystemService(Context.ACCESSIBILITY_SERVICE)).isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        mInputText.onInitializeAccessibilityEvent(event);
        mInputText.onPopulateAccessibilityEvent(event);
        event.setSource(NumberPicker.this, VIRTUAL_VIEW_ID_INPUT);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}
 

private void sendAccessibilityEventForVirtualButton(int virtualViewId, int eventType,
        String text) {
    if (((AccessibilityManager) getContext().getSystemService(Context.ACCESSIBILITY_SERVICE)).isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        event.setClassName(Button.class.getName());
        event.setPackageName(getContext().getPackageName());
        event.getText().add(text);
        event.setEnabled(NumberPicker.this.isEnabled());
        event.setSource(NumberPicker.this, virtualViewId);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}
 

private void sendAccessibilityEventForVirtualText(int eventType) {
    AccessibilityManager acm = (AccessibilityManager) getContext().getSystemService(Context.ACCESSIBILITY_SERVICE);
    if (acm.isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        mInputText.onInitializeAccessibilityEvent(event);
        mInputText.onPopulateAccessibilityEvent(event);
        event.setSource(NumberPicker.this, VIRTUAL_VIEW_ID_INPUT);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}
 

private void sendAccessibilityEventForVirtualButton(int virtualViewId, int eventType, String text) {
    AccessibilityManager acm = (AccessibilityManager) getContext().getSystemService(Context.ACCESSIBILITY_SERVICE);
    if (acm.isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        event.setClassName(Button.class.getName());
        event.setPackageName(getContext().getPackageName());
        event.getText().add(text);
        event.setEnabled(NumberPicker.this.isEnabled());
        event.setSource(NumberPicker.this, virtualViewId);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}
 

private void sendAccessibilityEventForVirtualText(int eventType) {
    if (((AccessibilityManager) getContext().getSystemService(Context.ACCESSIBILITY_SERVICE)).isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        mInputText.onInitializeAccessibilityEvent(event);
        mInputText.onPopulateAccessibilityEvent(event);
        event.setSource(TextPicker.this, VIRTUAL_VIEW_ID_INPUT);
        requestSendAccessibilityEvent(TextPicker.this, event);
    }
}
 

private void sendAccessibilityEventForVirtualButton(int virtualViewId, int eventType,
                                                    String text) {
    if (((AccessibilityManager) getContext().getSystemService(Context.ACCESSIBILITY_SERVICE)).isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        event.setClassName(Button.class.getName());
        event.setPackageName(getContext().getPackageName());
        event.getText().add(text);
        event.setEnabled(TextPicker.this.isEnabled());
        event.setSource(TextPicker.this, virtualViewId);
        requestSendAccessibilityEvent(TextPicker.this, event);
    }
}
 

private void sendAccessibilityEventForVirtualText(int eventType) {
    if (((AccessibilityManager) getContext().getSystemService(Context.ACCESSIBILITY_SERVICE)).isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        mInputText.onInitializeAccessibilityEvent(event);
        mInputText.onPopulateAccessibilityEvent(event);
        event.setSource(NumberPicker.this, VIRTUAL_VIEW_ID_INPUT);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}
 

private void sendAccessibilityEventForVirtualButton(int virtualViewId, int eventType,
        String text) {
    if (((AccessibilityManager) getContext().getSystemService(Context.ACCESSIBILITY_SERVICE)).isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        event.setClassName(Button.class.getName());
        event.setPackageName(getContext().getPackageName());
        event.getText().add(text);
        event.setEnabled(NumberPicker.this.isEnabled());
        event.setSource(NumberPicker.this, virtualViewId);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}