TextUtils

CAP_MODE_CHARACTERS

public static final int CAP_MODE_CHARACTERS

Capitalization mode for getCapsMode(CharSequence, int, int): capitalize all characters. This value is explicitly defined to be the same as InputType.TYPE_TEXT_FLAG_CAP_CHARACTERS.

Constant Value: 4096 (0x00001000)

CAP_MODE_SENTENCES

public static final int CAP_MODE_SENTENCES

Capitalization mode for getCapsMode(CharSequence, int, int): capitalize the first character of each sentence. This value is explicitly defined to be the same as InputType.TYPE_TEXT_FLAG_CAP_SENTENCES.

Constant Value: 16384 (0x00004000)

CAP_MODE_WORDS

public static final int CAP_MODE_WORDS

Capitalization mode for getCapsMode(CharSequence, int, int): capitalize the first character of all words. This value is explicitly defined to be the same as InputType.TYPE_TEXT_FLAG_CAP_WORDS.

Constant Value: 8192 (0x00002000)

SAFE_STRING_FLAG_FIRST_LINE

public static final int SAFE_STRING_FLAG_FIRST_LINE

Return only first line of text (truncate at first newline). Cannot be set at the same time as SAFE_STRING_FLAG_SINGLE_LINE.

Constant Value: 4 (0x00000004)

SAFE_STRING_FLAG_SINGLE_LINE

public static final int SAFE_STRING_FLAG_SINGLE_LINE

Force entire string into single line of text (no newlines). Cannot be set at the same time as SAFE_STRING_FLAG_FIRST_LINE.

Constant Value: 2 (0x00000002)

SAFE_STRING_FLAG_TRIM

public static final int SAFE_STRING_FLAG_TRIM

Remove whitespace and non-breaking spaces from the edges of the label.

Constant Value: 1 (0x00000001)

CHAR_SEQUENCE_CREATOR

public static final Creator<CharSequence> CHAR_SEQUENCE_CREATOR

commaEllipsize

public static CharSequence commaEllipsize (CharSequence text, 
                TextPaint p, 
                float avail, 
                String oneMore, 
                String more)

This method was deprecated in API level 26.
Do not use. This is not internationalized, and has known issues with right-to-left text, languages that have more than one plural form, languages that use a different character as a comma-like separator, etc. Use listEllipsize(Context, List, String, TextPaint, float, int) instead.

Converts a CharSequence of the comma-separated form "Andy, Bob, Charles, David" that is too wide to fit into the specified width into one like "Andy, Bob, 2 more".

concat

public static CharSequence concat (CharSequence... text)

Returns a CharSequence concatenating the specified CharSequences, retaining their spans if any. If there are no parameters, an empty string will be returned. If the number of parameters is exactly one, that parameter is returned as output, even if it is null. If the number of parameters is at least two, any null CharSequence among the parameters is treated as if it was the string "null". If there are paragraph spans in the source CharSequences that satisfy paragraph boundary requirements in the sources but would no longer satisfy them in the concatenated CharSequence, they may get extended in the resulting CharSequence or not retained.

copySpansFrom

public static void copySpansFrom (Spanned source, 
                int start, 
                int end, 
                Class<T> kind, 
                Spannable dest, 
                int destoff)

Copies the spans from the region start...end in source to the region destoff...destoff+end-start in dest. Spans in source that begin before start or end after end but overlap this range are trimmed as if they began at start or ended at end.

dumpSpans

public static void dumpSpans (CharSequence cs, 
                Printer printer, 
                String prefix)

Debugging tool to print the spans in a CharSequence. The output will be printed one span per line. If the CharSequence is not a Spanned, then the entire string will be printed on a single line.

ellipsize

public static CharSequence ellipsize (CharSequence text, 
                TextPaint p, 
                float avail, 
                TextUtils.TruncateAt where)

Returns the original text if it fits in the specified width given the properties of the specified Paint, or, if it does not fit, a truncated copy with ellipsis character added at the specified edge or center.

ellipsize

public static CharSequence ellipsize (CharSequence text, 
                TextPaint paint, 
                float avail, 
                TextUtils.TruncateAt where, 
                boolean preserveLength, 
                TextUtils.EllipsizeCallback callback)

Returns the original text if it fits in the specified width given the properties of the specified Paint, or, if it does not fit, a copy with ellipsis character added at the specified edge or center. If preserveLength is specified, the returned copy will be padded with zero-width spaces to preserve the original length and offsets instead of truncating. If callback is non-null, it will be called to report the start and end of the ellipsized range. TextDirection is determined by the first strong directional character.

equals

public static boolean equals (CharSequence a, 
                CharSequence b)

Returns true if a and b are equal, including if they are both null.

Note: In platform versions 1.1 and earlier, this method only worked well if both the arguments were instances of String.

expandTemplate

public static CharSequence expandTemplate (CharSequence template, 
                CharSequence... values)

Replace instances of "^1", "^2", etc. in the template CharSequence with the corresponding values. "^^" is used to produce a single caret in the output. Only up to 9 replacement values are supported, "^10" will be produce the first replacement value followed by a '0'.

getCapsMode

public static int getCapsMode (CharSequence cs, 
                int off, 
                int reqModes)

Determine what caps mode should be in effect at the current offset in the text. Only the mode bits set in reqModes will be checked. Note that the caps mode flags here are explicitly defined to match those in InputType.

getChars

public static void getChars (CharSequence s, 
                int start, 
                int end, 
                char[] dest, 
                int destoff)

getLayoutDirectionFromLocale

public static int getLayoutDirectionFromLocale (Locale locale)

Return the layout direction for a given Locale

getOffsetAfter

public static int getOffsetAfter (CharSequence text, 
                int offset)

getOffsetBefore

public static int getOffsetBefore (CharSequence text, 
                int offset)

getReverse

public static CharSequence getReverse (CharSequence source, 
                int start, 
                int end)

This method was deprecated in API level 24.
Do not use.

This function only reverses individual chars and not their associated spans. It doesn't support surrogate pairs (that correspond to non-BMP code points), combining sequences or conjuncts either.

getTrimmedLength

public static int getTrimmedLength (CharSequence s)

Returns the length that the specified CharSequence would have if spaces and ASCII control characters were trimmed from the start and end, as by String.trim.

htmlEncode

public static String htmlEncode (String s)

Html-encode the string.

indexOf

public static int indexOf (CharSequence s, 
                char ch, 
                int start, 
                int end)

indexOf

public static int indexOf (CharSequence s, 
                CharSequence needle, 
                int start, 
                int end)

indexOf

public static int indexOf (CharSequence s, 
                CharSequence needle, 
                int start)

indexOf

public static int indexOf (CharSequence s, 
                CharSequence needle)

indexOf

public static int indexOf (CharSequence s, 
                char ch, 
                int start)

indexOf

public static int indexOf (CharSequence s, 
                char ch)

isDigitsOnly

public static boolean isDigitsOnly (CharSequence str)

Returns whether the given CharSequence contains only digits.

isEmpty

public static boolean isEmpty (CharSequence str)

Returns true if the string is null or 0-length.

isGraphic

public static boolean isGraphic (CharSequence str)

Returns whether the given CharSequence contains any printable characters.

isGraphic

public static boolean isGraphic (char c)

This method was deprecated in API level 24.
Use isGraphic(java.lang.CharSequence) instead.

Returns whether this character is a printable character. This does not support non-BMP characters and should not be used.

join

public static String join (CharSequence delimiter, 
                Iterable<T> tokens)

Returns a string containing the tokens joined by delimiters.

join

public static String join (CharSequence delimiter, 
                Object[] tokens)

Returns a string containing the tokens joined by delimiters.

lastIndexOf

public static int lastIndexOf (CharSequence s, 
                char ch, 
                int last)

lastIndexOf

public static int lastIndexOf (CharSequence s, 
                char ch)

lastIndexOf

public static int lastIndexOf (CharSequence s, 
                char ch, 
                int start, 
                int last)

listEllipsize

public static CharSequence listEllipsize (Context context, 
                List<CharSequence> elements, 
                String separator, 
                TextPaint paint, 
                float avail, 
                int moreId)

Formats a list of CharSequences by repeatedly inserting the separator between them, but stopping when the resulting sequence is too wide for the specified width. This method actually tries to fit the maximum number of elements. So if "A, 11 more" fits, "A, B, 10 more" doesn't fit, but "A, B, C, 9 more" fits again (due to the glyphs for the digits being very wide, for example), it returns "A, B, C, 9 more". Because of this, this method may be inefficient for very long lists. Note that the elements of the returned value, as well as the string for moreId, will be bidi-wrapped using BidiFormatter.unicodeWrap based on the locale of the input Context. If the input Context is null, the default BidiFormatter from BidiFormatter.getInstance() will be used.

makeSafeForPresentation

public static CharSequence makeSafeForPresentation (String unclean, 
                int maxCharactersToConsider, 
                float ellipsizeDip, 
                int flags)

Remove html, remove bad characters, and truncate string.

This method is meant to remove common mistakes and nefarious formatting from strings that were loaded from untrusted sources (such as other packages).

This method first treats the string like HTML and then ...

• Removes new lines or truncates at first new line
• Trims the white-space off the end
• Truncates the string

regionMatches

public static boolean regionMatches (CharSequence one, 
                int toffset, 
                CharSequence two, 
                int ooffset, 
                int len)

replace

public static CharSequence replace (CharSequence template, 
                String[] sources, 
                CharSequence[] destinations)

Return a new CharSequence in which each of the source strings is replaced by the corresponding element of the destinations.

split

public static String[] split (String text, 
                Pattern pattern)

Splits a string on a pattern. This method yields the same result as pattern.split(text, -1) except that if text.isEmpty() then this method returns an empty array whereas pattern.split("", -1) would have returned an array with a single "". The -1 means that trailing empty Strings are not removed from the result; Note that whether a leading zero-width match can result in a leading "" depends on whether your app targets an SDK version <= 28; see Pattern.split(CharSequence, int).

split

public static String[] split (String text, 
                String expression)

This method yields the same result as text.split(expression, -1) except that if text.isEmpty() then this method returns an empty array whereas "".split(expression, -1) would have returned an array with a single "". The -1 means that trailing empty Strings are not removed from the result; for example split("a,", "," ) returns {"a", ""}. Note that whether a leading zero-width match can result in a leading "" depends on whether your app targets an SDK version <= 28; see Pattern.split(CharSequence, int).

stringOrSpannedString

public static CharSequence stringOrSpannedString (CharSequence source)

substring

public static String substring (CharSequence source, 
                int start, 
                int end)

Create a new String object containing the given range of characters from the source string. This is different than simply calling CharSequence.subSequence in that it does not preserve any style runs in the source sequence, allowing a more efficient implementation.

writeToParcel

public static void writeToParcel (CharSequence cs, 
                Parcel p, 
                int parcelableFlags)

Flatten a CharSequence and whatever styles can be copied across processes into the parcel.