Example usage for android.support.v4.view.accessibility AccessibilityNodeInfoCompat setText

Introduction

In this page you can find the example usage for android.support.v4.view.accessibility AccessibilityNodeInfoCompat setText.

Prototype

public void setText(CharSequence text) 

Source Link

Document

Sets the text of this node.

Usage

From source file:com.facebook.litho.widget.TextSpec.java

@OnPopulateAccessibilityNode
static void onPopulateAccessibilityNode(AccessibilityNodeInfoCompat node,
        @Prop(resType = STRING) CharSequence text) {
    node.setText(text);
}

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From source file:com.google.android.apps.forscience.whistlepunk.review.GraphExploringSeekBar.java

private void init() {
    // Use an AccessibilityDelegate to add custom text to Accessibility events.
    ViewCompat.setAccessibilityDelegate(this, new AccessibilityDelegateCompat() {
        @Override//from   w w  w.j  a  va2s.c  om
        public void onPopulateAccessibilityEvent(View host, AccessibilityEvent event) {
            super.onPopulateAccessibilityEvent(host, event);
            event.getText().clear();
            event.getText().add(generateEventText());
        }

        @Override
        public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
            super.onInitializeAccessibilityNodeInfo(host, info);
            info.setText(generateEventText());
        }
    });

    Resources res = getContext().getResources();
    mFormat = res.getString(R.string.graph_exploring_seekbar_content_description);

    // Always use LTR layout, since graphs are always LTR.
    setLayoutDirection(LAYOUT_DIRECTION_LTR);
}

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From source file:com.redinput.datetimepickercompat.AccessibleLinearLayout.java

private void installAccessibilityDelegate() {
    // The accessibility delegate enables customizing accessibility behavior
    // via composition as opposed as inheritance. The main benefit is that
    // one can write a backwards compatible application by setting the delegate
    // only if the API level is high enough i.e. the delegate is part of the APIs.
    // The easiest way to achieve that is by using the support library which
    // takes the burden of checking API version and knowing which API version
    // introduced the delegate off the developer.
    ViewCompat.setAccessibilityDelegate(this, new AccessibilityDelegateCompat() {

        @Override/*from  w w  w.  ja  va  2 s.co m*/
        public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) {
            super.onInitializeAccessibilityEvent(host, event);
            // Note that View.onInitializeAccessibilityNodeInfo was introduced in
            // ICS and we would like to tweak a bit the text that is reported to
            // accessibility services via the AccessibilityNodeInfo.
            event.getText().add(Button.class.getName());
        }

        @Override
        public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
            super.onInitializeAccessibilityNodeInfo(host, info);
            // Note that View.onInitializeAccessibilityNodeInfo was introduced in
            // ICS and we would like to tweak a bit the text that is reported to
            // accessibility services via the AccessibilityNodeInfo.
            info.setText(Button.class.getName());
        }
    });
}

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From source file:com.facebook.litho.widget.TextSpec.java

@OnPopulateExtraAccessibilityNode
static void onPopulateExtraAccessibilityNode(AccessibilityNodeInfoCompat node, int extraNodeIndex,
        int componentBoundsLeft, int componentBoundsTop, @Prop(resType = STRING) CharSequence text,
        @FromBoundsDefined Layout textLayout, @FromBoundsDefined ClickableSpan[] clickableSpans) {
    final Spanned spanned = (Spanned) text;

    final ClickableSpan span = clickableSpans[extraNodeIndex];
    final int start = spanned.getSpanStart(span);
    final int end = spanned.getSpanEnd(span);
    final int startLine = textLayout.getLineForOffset(start);
    final int endLine = textLayout.getLineForOffset(end);

    // The bounds for multi-line strings should *only* include the first line.  This is because
    // Talkback triggers its click at the center point of these bounds, and if that center point
    // is outside the spannable, it will click on something else.  There is no harm in not outlining
    // the wrapped part of the string, as the text for the whole string will be read regardless of
    // the bounding box.
    final int selectionPathEnd = startLine == endLine ? end : textLayout.getLineVisibleEnd(startLine);

    textLayout.getSelectionPath(start, selectionPathEnd, sTempPath);
    sTempPath.computeBounds(sTempRectF, /* unused */true);

    sTempRect.set(componentBoundsLeft + (int) sTempRectF.left, componentBoundsTop + (int) sTempRectF.top,
            componentBoundsLeft + (int) sTempRectF.right, componentBoundsTop + (int) sTempRectF.bottom);

    if (sTempRect.isEmpty()) {
        // Text is not actually visible.
        // Override bounds so it doesn't crash ExploreByTouchHelper.java
        sTempRect.set(0, 0, 1, 1);//from  w  ww.j a  v  a 2s .c o m
        node.setBoundsInParent(sTempRect);
        node.setContentDescription(""); // make node non-focusable
        return;
    }

    node.setBoundsInParent(sTempRect);

    node.setClickable(true);
    node.setFocusable(true);
    node.setEnabled(true);
    node.setVisibleToUser(true);
    if (span instanceof AccessibleClickableSpan) {
        node.setText(((AccessibleClickableSpan) span).getAccessibilityDescription());
    } else {
        node.setText(spanned.subSequence(start, end));
    }
}

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