SpannableStringBuilder
open class SpannableStringBuilder : Appendable, CharSequence, Editable, GetChars, Spannable
| kotlin.Any | |
| ↳ | android.text.SpannableStringBuilder |
This is the class for text whose content and markup can both be changed.
Summary
| Public constructors | |
|---|---|
|
Create a new SpannableStringBuilder with empty contents |
|
SpannableStringBuilder(text: CharSequence!)Create a new SpannableStringBuilder containing a copy of the specified text, including its spans if any. |
|
SpannableStringBuilder(text: CharSequence!, start: Int, end: Int)Create a new SpannableStringBuilder containing a copy of the specified slice of the specified text, including its spans if any. |
|
| Public methods | |
|---|---|
| open SpannableStringBuilder |
Appends the specified character to this |
| open SpannableStringBuilder |
append(text: CharSequence?)Appends the specified character sequence to this |
| open SpannableStringBuilder |
append(text: CharSequence?, start: Int, end: Int)Appends a subsequence of the specified character sequence to this |
| open SpannableStringBuilder! |
append(text: CharSequence!, what: Any!, flags: Int)Appends the character sequence |
| open Unit |
clear()Convenience for replace(0, length(), "", 0, 0). |
| open Unit |
Removes all spans from the Editable, as if by calling |
| open SpannableStringBuilder! |
Convenience for replace(st, en, "", 0, 0) |
| open Boolean |
Indicates whether some other object is "equal to" this one. |
| open Char |
Return the char at the specified offset within the buffer. |
| open Unit |
Copy the specified range of chars from this buffer into the specified array, beginning at the specified offset. |
| open Array<InputFilter!>! |
Returns the array of input filters that are currently applied to changes to this Editable. |
| open Int |
getSpanEnd(what: Any!)Return the buffer offset of the end of the specified markup object, or -1 if it is not attached to this buffer. |
| open Int |
getSpanFlags(what: Any!)Return the flags of the end of the specified markup object, or 0 if it is not attached to this buffer. |
| open Int |
getSpanStart(what: Any!)Return the buffer offset of the beginning of the specified markup object, or -1 if it is not attached to this buffer. |
| open Array<T>! |
Return an array of the spans of the specified type that overlap the specified range of the buffer. |
| open Int |
getTextRunCursor(contextStart: Int, contextEnd: Int, dir: Int, offset: Int, cursorOpt: Int, p: Paint!)Returns the next cursor position in the run. |
| open Int |
Returns the depth of TextWatcher callbacks. |
| open Int |
hashCode()Returns a hash code value for the object. |
| open SpannableStringBuilder! |
insert(where: Int, tb: CharSequence!)Convenience for replace(where, where, text, 0, text.length()); |
| open SpannableStringBuilder! |
insert(where: Int, tb: CharSequence!, start: Int, end: Int)Convenience for replace(where, where, text, start, end) |
| open Int |
nextSpanTransition(start: Int, limit: Int, kind: Class<Any!>!)Return the next offset after |
| open Unit |
removeSpan(what: Any!)Remove the specified markup object from the buffer. |
| open SpannableStringBuilder! |
replace(start: Int, end: Int, tb: CharSequence!)Convenience for replace(st, en, text, 0, text.length()) |
| open SpannableStringBuilder! |
Replaces the specified range ( |
| open Unit |
setFilters(filters: Array<InputFilter!>!)Sets the series of filters that will be called in succession whenever the text of this Editable is changed, each of which has the opportunity to limit or transform the text that is being inserted. |
| open Unit |
Mark the specified range of text with the specified object. |
| open CharSequence |
subSequence(startIndex: Int, endIndex: Int)Return a new CharSequence containing a copy of the specified range of this buffer, including the overlapping spans. |
| open String |
toString()Return a String containing a copy of the chars in this buffer. |
| open static SpannableStringBuilder! |
valueOf(source: CharSequence!) |
| Properties | |
|---|---|
| open Int |
Return the number of chars in the buffer. |
Public constructors
SpannableStringBuilder
SpannableStringBuilder()
Create a new SpannableStringBuilder with empty contents
SpannableStringBuilder
SpannableStringBuilder(text: CharSequence!)
Create a new SpannableStringBuilder containing a copy of the specified text, including its spans if any.
SpannableStringBuilder
SpannableStringBuilder(
text: CharSequence!,
start: Int,
end: Int)
Create a new SpannableStringBuilder containing a copy of the specified slice of the specified text, including its spans if any.
Public methods
append
open fun append(text: Char): SpannableStringBuilder
Appends the specified character to this Appendable.
| Parameters | |
|---|---|
c |
The character to append |
| Return | |
|---|---|
SpannableStringBuilder |
A reference to this Appendable |
| Exceptions | |
|---|---|
java.io.IOException |
If an I/O error occurs |
append
open fun append(text: CharSequence?): SpannableStringBuilder
Appends the specified character sequence to this Appendable.
Depending on which class implements the character sequence csq, the entire sequence may not be appended. For instance, if csq is a java.nio.CharBuffer then the subsequence to append is defined by the buffer's position and limit.
| Parameters | |
|---|---|
csq |
The character sequence to append. If csq is null, then the four characters "null" are appended to this Appendable. |
| Return | |
|---|---|
SpannableStringBuilder |
A reference to this Appendable |
| Exceptions | |
|---|---|
java.io.IOException |
If an I/O error occurs |
append
open fun append(
text: CharSequence?,
start: Int,
end: Int
): SpannableStringBuilder
Appends a subsequence of the specified character sequence to this Appendable.
An invocation of this method of the form out.append(csq, start, end) when csq is not null, behaves in exactly the same way as the invocation
out.append(csq.subSequence(start, end))
| Parameters | |
|---|---|
csq |
The character sequence from which a subsequence will be appended. If csq is null, then characters will be appended as if csq contained the four characters "null". |
start |
Int: The index of the first character in the subsequence |
end |
Int: The index of the character following the last character in the subsequence |
| Return | |
|---|---|
SpannableStringBuilder |
A reference to this Appendable |
| Exceptions | |
|---|---|
java.io.IOException |
If an I/O error occurs |
java.lang.IndexOutOfBoundsException |
If start or end are negative, start is greater than end, or end is greater than csq.length() |
append
open fun append(
text: CharSequence!,
what: Any!,
flags: Int
): SpannableStringBuilder!
Appends the character sequence text and spans what over the appended part. See Spanned for an explanation of what the flags mean.
| Parameters | |
|---|---|
text |
CharSequence!: the character sequence to append. |
what |
Any!: the object to be spanned over the appended text. |
flags |
Int: see Spanned. |
| Return | |
|---|---|
SpannableStringBuilder! |
this SpannableStringBuilder. |
clear
open fun clear(): Unit
Convenience for replace(0, length(), "", 0, 0). Note that this clears the text, not the spans; use clearSpans if you need that.
clearSpans
open fun clearSpans(): Unit
Removes all spans from the Editable, as if by calling removeSpan on each of them.
delete
open fun delete(
start: Int,
end: Int
): SpannableStringBuilder!
Convenience for replace(st, en, "", 0, 0)
equals
open 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 returntrue. - It is symmetric: for any non-null reference values
xandy,x.equals(y)should returntrueif and only ify.equals(x)returnstrue. - It is transitive: for any non-null reference values
x,y, andz, ifx.equals(y)returnstrueandy.equals(z)returnstrue, thenx.equals(z)should returntrue. - It is consistent: for any non-null reference values
xandy, multiple invocations ofx.equals(y)consistently returntrueor consistently returnfalse, provided no information used inequalscomparisons on the objects is modified. - For any non-null reference value
x,x.equals(null)should returnfalse.
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
open fun get(where: Int): Char
Return the char at the specified offset within the buffer.
| 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() |
getChars
open fun getChars(
start: Int,
end: Int,
dest: CharArray!,
destoff: Int
): Unit
Copy the specified range of chars from this buffer into the specified array, beginning at the specified offset.
getFilters
open fun getFilters(): Array<InputFilter!>!
Returns the array of input filters that are currently applied to changes to this Editable.
getSpanEnd
open fun getSpanEnd(what: Any!): Int
Return the buffer offset of the end of the specified markup object, or -1 if it is not attached to this buffer.
getSpanFlags
open fun getSpanFlags(what: Any!): Int
Return the flags of the end of the specified markup object, or 0 if it is not attached to this buffer.
getSpanStart
open fun getSpanStart(what: Any!): Int
Return the buffer offset of the beginning of the specified markup object, or -1 if it is not attached to this buffer.
getSpans
open fun <T : Any!> getSpans(
queryStart: Int,
queryEnd: Int,
kind: Class<T>?
): Array<T>!
Return an array of the spans of the specified type that overlap the specified range of the buffer. The kind may be Object.class to get a list of all the spans regardless of type.
| Parameters | |
|---|---|
kind |
Class<T>?: This value may be null. |
getTextRunCursor
open fungetTextRunCursor(
contextStart: Int,
contextEnd: Int,
dir: Int,
offset: Int,
cursorOpt: Int,
p: Paint!
): Int
Deprecated: This is an internal method, refrain from using it in your code
Returns the next cursor position in the run. This avoids placing the cursor between surrogates, between characters that form conjuncts, between base characters and combining marks, or within a reordering cluster.
The context is the shaping context for cursor movement, generally the bounds of the metric span enclosing the cursor in the direction of movement. contextStart, contextEnd and offset are relative to the start of the string.
If cursorOpt is CURSOR_AT and the offset is not a valid cursor position, this returns -1. Otherwise this will never return a value before contextStart or after contextEnd.
| Parameters | |
|---|---|
contextStart |
Int: the start index of the context |
contextEnd |
Int: the (non-inclusive) end index of the context |
dir |
Int: 1 if the run is RTL, otherwise 0 |
offset |
Int: the cursor position to move from |
cursorOpt |
Int: how to move the cursor, one of CURSOR_AFTER, CURSOR_AT_OR_AFTER, CURSOR_BEFORE, CURSOR_AT_OR_BEFORE, or CURSOR_AT |
p |
Paint!: the Paint object that is requesting this information |
| Return | |
|---|---|
Int |
the offset of the next position, or -1 |
getTextWatcherDepth
open fun getTextWatcherDepth(): Int
Returns the depth of TextWatcher callbacks. Returns 0 when the object is not handling TextWatchers. A return value greater than 1 implies that a TextWatcher caused a change that recursively triggered a TextWatcher.
hashCode
open fun hashCode(): Int
Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.
The general contract of hashCode is:
- Whenever it is invoked on the same object more than once during an execution of a Java application, the
hashCodemethod must consistently return the same integer, provided no information used inequalscomparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. - If two objects are equal according to the
equalsmethod, then calling thehashCodemethod on each of the two objects must produce the same integer result. - It is not required that if two objects are unequal according to the
equalsmethod, then calling thehashCodemethod on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
| Return | |
|---|---|
Int |
a hash code value for this object. |
insert
open fun insert(
where: Int,
tb: CharSequence!
): SpannableStringBuilder!
Convenience for replace(where, where, text, 0, text.length());
insert
open fun insert(
where: Int,
tb: CharSequence!,
start: Int,
end: Int
): SpannableStringBuilder!
Convenience for replace(where, where, text, start, end)
nextSpanTransition
open fun nextSpanTransition(
start: Int,
limit: Int,
kind: Class<Any!>!
): Int
Return the next offset after start but less than or equal to limit where a span of the specified type begins or ends.
removeSpan
open fun removeSpan(what: Any!): Unit
Remove the specified markup object from the buffer.
replace
open fun replace(
start: Int,
end: Int,
tb: CharSequence!
): SpannableStringBuilder!
Convenience for replace(st, en, text, 0, text.length())
replace
open fun replace(
start: Int,
end: Int,
tb: CharSequence!,
tbstart: Int,
tbend: Int
): SpannableStringBuilder!
Replaces the specified range (st…en) of text in this Editable with a copy of the slice start…end from source. The destination slice may be empty, in which case the operation is an insertion, or the source slice may be empty, in which case the operation is a deletion.
Before the change is committed, each filter that was set with setFilters is given the opportunity to modify the source text.
If source is Spanned, the spans from it are preserved into the Editable. Existing spans within the Editable that entirely cover the replaced range are retained, but any that were strictly within the range that was replaced are removed. If the source contains a span with Spanned.SPAN_PARAGRAPH flag, and it does not satisfy the paragraph boundary constraint, it is not retained. As a special case, the cursor position is preserved even when the entire range where it is located is replaced.
| Return | |
|---|---|
SpannableStringBuilder! |
a reference to this object. |
setFilters
open fun setFilters(filters: Array<InputFilter!>!): Unit
Sets the series of filters that will be called in succession whenever the text of this Editable is changed, each of which has the opportunity to limit or transform the text that is being inserted.
setSpan
open fun setSpan(
what: Any!,
start: Int,
end: Int,
flags: Int
): Unit
Mark the specified range of text with the specified object. The flags determine how the span will behave when text is inserted at the start or end of the span's range.
subSequence
open fun subSequence(
startIndex: Int,
endIndex: Int
): CharSequence
Return a new CharSequence containing a copy of the specified range of this buffer, including the overlapping spans.
| Parameters | |
|---|---|
start |
the start index, inclusive |
end |
the end index, exclusive |
| Return | |
|---|---|
CharSequence |
the specified subsequence |
| Exceptions | |
|---|---|
java.lang.IndexOutOfBoundsException |
if start or end are negative, if end is greater than length(), or if start is greater than end |
toString
open fun toString(): String
Return a String containing a copy of the chars in this buffer.
| Return | |
|---|---|
String |
a string consisting of exactly this sequence of characters |
valueOf
open static fun valueOf(source: CharSequence!): SpannableStringBuilder!
Properties
length
open val length: Int
Return the number of chars in the buffer.
| Return | |
|---|---|
Int |
the number of chars in this sequence |