android.support.v4.view.accessibility.AccessibilityNodeInfoCompat#isChecked ( )源码实例Demo

@Override
public void format(Editable result,
        Context context,
        AccessibilityNodeInfoCompat node) {
    int oldLength = result.length();

    CharSequence text = null;

    AccessibilityNodeInfoCompat labeledBy = node.getLabeledBy();
    if (labeledBy != null) {
        text = LabelingUtils.getNodeText(labeledBy, getLabelManager());
        labeledBy.recycle();
    }
    if (text == null) {
        text = LabelingUtils.getNodeText(node, getLabelManager());
    }
    if (text == null) {
        text = "";
    }

    result.append(text);

    if (node.isCheckable() || node.isChecked()) {
        CharSequence mark;
        if (node.isChecked()) {
            mark = context.getString(R.string.checkmark_checked);
        } else {
            mark = context.getString(R.string.checkmark_not_checked);
        }
        StringUtils.appendWithSpaces(result, mark);
    }

    if (oldLength == result.length()
            && AccessibilityNodeInfoUtils.isActionableForAccessibility(
                node)) {
        result.append(getFallbackText(context, node));
    }
}
 

/**
 * Gets a description of the properties of a node.
 */
public static CharSequence nodeDebugDescription(AccessibilityNodeInfoCompat node) {
    StringBuilder sb = new StringBuilder();
    sb.append(node.getWindowId());

    if (node.getClassName() != null) {
        appendSimpleName(sb, node.getClassName());
    } else {
        sb.append("??");
    }

    if (!node.isVisibleToUser()) {
        sb.append(":invisible");
    }

    if (node.getText() != null) {
        sb.append(":");
        sb.append(node.getText().toString().trim());
    }

    if (node.getContentDescription() != null) {
        sb.append(":");
        sb.append(node.getContentDescription().toString().trim());
    }

    int actions = node.getActions();
    if (actions != 0) {
        sb.append(":");
        if ((actions & AccessibilityNodeInfoCompat.ACTION_FOCUS) != 0) {
            sb.append("F");
        }
        if ((actions & AccessibilityNodeInfoCompat.ACTION_ACCESSIBILITY_FOCUS) != 0) {
            sb.append("A");
        }
        if ((actions & AccessibilityNodeInfoCompat.ACTION_CLEAR_ACCESSIBILITY_FOCUS) != 0) {
            sb.append("a");
        }
        if ((actions & AccessibilityNodeInfoCompat.ACTION_SCROLL_BACKWARD) != 0) {
            sb.append("-");
        }
        if ((actions & AccessibilityNodeInfoCompat.ACTION_SCROLL_FORWARD) != 0) {
            sb.append("+");
        }
    }

    if (node.isCheckable()) {
        sb.append(":");
        if (node.isChecked()) {
            sb.append("(X)");
        } else {
            sb.append("( )");
        }
    }

    if (node.isFocusable()) {
        sb.append(":focusable");
    }

    if (node.isFocused()) {
        sb.append(":focused");
    }

    if (node.isSelected()) {
        sb.append(":selected");
    }

    if (node.isClickable()) {
        sb.append(":clickable");
    }

    if (node.isLongClickable()) {
        sb.append(":longClickable");
    }

    if (node.isAccessibilityFocused()) {
        sb.append(":accessibilityFocused");
    }

    if (!node.isEnabled()) {
        sb.append(":disabled");
    }

    return sb.toString();
}