SpannedString
class SpannedString : CharSequence, GetChars, Spanned
This is the class for text whose content and markup are immutable. For mutable markup, see SpannableString; for mutable text, see SpannableStringBuilder.
Summary
| Inherited constants |
From class Spanned
Int |
SPAN_COMPOSING
This flag is set on spans that are being used to apply temporary styling information on the composing text of an input method, so that they can be found and removed when the composing text is being replaced.
|
Int |
SPAN_EXCLUSIVE_EXCLUSIVE
Spans of type SPAN_EXCLUSIVE_EXCLUSIVE do not expand to include text inserted at either their starting or ending point. They can never have a length of 0 and are automatically removed from the buffer if all the text they cover is removed.
|
Int |
SPAN_EXCLUSIVE_INCLUSIVE
Non-0-length spans of type SPAN_EXCLUSIVE_INCLUSIVE expand to include text inserted at their ending point but not at their starting point. When 0-length, they behave like points.
|
Int |
SPAN_INCLUSIVE_EXCLUSIVE
Non-0-length spans of type SPAN_INCLUSIVE_EXCLUSIVE expand to include text inserted at their starting point but not at their ending point. When 0-length, they behave like marks.
|
Int |
SPAN_INCLUSIVE_INCLUSIVE
Spans of type SPAN_INCLUSIVE_INCLUSIVE expand to include text inserted at either their starting or ending point.
|
Int |
SPAN_INTERMEDIATE
This flag will be set for intermediate span changes, meaning there is guaranteed to be another change following it. Typically it is used for Selection which automatically uses this with the first offset it sets when updating the selection.
|
Int |
SPAN_MARK_MARK
0-length spans with type SPAN_MARK_MARK behave like text marks: they remain at their original offset when text is inserted at that offset. Conceptually, the text is added after the mark.
|
Int |
SPAN_MARK_POINT
SPAN_MARK_POINT is a synonym for SPAN_INCLUSIVE_INCLUSIVE.
|
Int |
SPAN_PARAGRAPH
SPAN_PARAGRAPH behaves like SPAN_INCLUSIVE_EXCLUSIVE (SPAN_MARK_MARK), except that if either end of the span is at the end of the buffer, that end behaves like _POINT instead (so SPAN_INCLUSIVE_INCLUSIVE if it starts in the middle and ends at the end, or SPAN_EXCLUSIVE_INCLUSIVE if it both starts and ends at the end).
Its endpoints must be the start or end of the buffer or immediately after a \n character, and if the \n that anchors it is deleted, the endpoint is pulled to the next \n that follows in the buffer (or to the end of the buffer). If a span with SPAN_PARAGRAPH flag is pasted into another text and the paragraph boundary constraint is not satisfied, the span is discarded.
|
Int |
SPAN_POINT_MARK
SPAN_POINT_MARK is a synonym for SPAN_EXCLUSIVE_EXCLUSIVE.
|
Int |
SPAN_POINT_MARK_MASK
Bitmask of bits that are relevent for controlling point/mark behavior of spans. MARK and POINT are conceptually located between two adjacent characters. A MARK is "attached" to the character before, while a POINT will stick to the character after. The insertion cursor is conceptually located between the MARK and the POINT. As a result, inserting a new character between a MARK and a POINT will leave the MARK unchanged, while the POINT will be shifted, now located after the inserted character and still glued to the same character after it. Depending on whether the insertion happens at the beginning or the end of a span, the span will hence be expanded to include the new character (when the span is using a MARK at its beginning or a POINT at its end) or it will be excluded. Note that before and after here refer to offsets in the String, which are independent from the visual representation of the text (left-to-right or right-to-left).
|
Int |
SPAN_POINT_POINT
0-length spans with type SPAN_POINT_POINT behave like cursors: they are pushed forward by the length of the insertion when text is inserted at their offset. The text is conceptually inserted before the point.
|
Int |
SPAN_PRIORITY
The bits specified by the SPAN_PRIORITY bitmap determine the order of change notifications -- higher numbers go first. You probably don't need to set this; it is used so that when text changes, the text layout gets the chance to update itself before any other callbacks can inquire about the layout of the text.
|
Int |
SPAN_PRIORITY_SHIFT
The bits numbered just above SPAN_PRIORITY_SHIFT determine the order of change notifications -- higher numbers go first. You probably don't need to set this; it is used so that when text changes, the text layout gets the chance to update itself before any other callbacks can inquire about the layout of the text.
|
Int |
SPAN_USER
The bits specified by the SPAN_USER bitfield are available for callers to use to store scalar data associated with their span object.
|
Int |
SPAN_USER_SHIFT
The bits numbered SPAN_USER_SHIFT and above are available for callers to use to store scalar data associated with their span object.
|
|
| Public constructors |
|
For the backward compatibility reasons, this constructor copies all spans including .
|
Public constructors
SpannedString
SpannedString(source: CharSequence!)
For the backward compatibility reasons, this constructor copies all spans including .
Public methods
equals
fun equals(other: Any?): Boolean
Indicates whether some other object is "equal to" this one.
The equals method implements an equivalence relation on non-null object references:
- It is reflexive: for any non-null reference value
x, x.equals(x) should return true.
- It is symmetric: for any non-null reference values
x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
- It is transitive: for any non-null reference values
x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
- It is consistent: for any non-null reference values
x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
- For any non-null reference value
x, x.equals(null) should return false.
An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.
| Parameters |
obj |
the reference object with which to compare. |
o |
This value may be null. |
| Return |
Boolean |
true if this object is the same as the obj argument; false otherwise. |
get
fun get(i: Int): Char
| Parameters |
index |
the index of the char value to be returned |
| Return |
Char |
the specified char value |
| Exceptions |
java.lang.IndexOutOfBoundsException |
if the index argument is negative or not less than length() |
getSpanEnd
fun getSpanEnd(what: Any!): Int
getSpanFlags
fun getSpanFlags(what: Any!): Int
getSpanStart
fun getSpanStart(what: Any!): Int
hashCode
fun hashCode(): Int
| Return |
Int |
a hash code value for this object. |
nextSpanTransition
fun nextSpanTransition(
start: Int,
limit: Int,
kind: Class<Any!>!
): Int
subSequence
fun subSequence(
startIndex: Int,
endIndex: Int
): CharSequence
| Parameters |
start |
the start index, inclusive |
end |
the end index, exclusive |
| Exceptions |
java.lang.IndexOutOfBoundsException |
if start or end are negative, if end is greater than length(), or if start is greater than end |
toString
fun toString(): String
| Return |
String |
a string consisting of exactly this sequence of characters |
Properties
length
val length: Int
| Return |
Int |
the number of chars in this sequence |
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Last updated 2025-02-10 UTC.
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