本文共 1795 字，大约阅读时间需要 5 分钟。

Spanned（可附加标记的字符序列）

** * This is the interface for text that has markup objects attached to * ranges of it.  Not all text classes have mutable markup or text; * see {@link Spannable} for mutable markup and {@link Editable} for * mutable text. */public interface Spanned extends CharSequence

Spannable （可加或去除标记的字符序列）

/***  This is the interface for text to which markup objects can be attached and detached. * Not all Spannable classes have mutable text; * see {@link Editable} for that. */public interface Spannableextends Spanned

Editable （内容和标记都可变的字符序列）

/** * This is the interface for text whose content and markup can be changed  */public interface Editableextends CharSequence, GetChars, Spannable, Appendable

Appendable（字符文本可改变的接口）

/** * An object to which char sequences and values can be appended. *／public interface Appendable

SpannableString （内容不可变，标记可附加或去掉）

/** * This is the class for text whose content is immutable but to which * markup objects can be attached and detached. * For mutable text, see {@link SpannableStringBuilder}. */public class SpannableStringextends SpannableStringInternalimplements CharSequence, GetChars, Spannable

SpannableString只有以下3个方法

public void setSpan(Object what, int start, int end, int flags) {        super.setSpan(what, start, end, flags);    }    public void removeSpan(Object what) {        super.removeSpan(what);    }    public final CharSequence subSequence(int start, int end) {        return new SpannableString(this, start, end);    }

SpannableStringBuilder（内容和标记都可变）

/** * This is the class for text whose content and markup can both be changed. */public class SpannableStringBuilder implements CharSequence, GetChars, Spannable, Editable,        Appendable, GraphicsOperations

SpannableStringBuilder有append，insert, setSpan , removeSpan方法

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