Android(安卓)富文本编辑器 - ListItemSpan - android

import android.graphics.Canvas;import android.graphics.Paint;import android.text.Layout;import android.text.Spanned;import android.text.style.LeadingMarginSpan;import android.util.Log;public class ListItemSpan implements LeadingMarginSpan {  private final int mNumber;  private static final int BULLET_RADIUS = 3;  private static final int NUMBER_RADIUS = 10;  //Gap should be about 1em  public static final int STANDARD_GAP_WIDTH = 30;  public ListItemSpan() {      mNumber = -1;  }  public ListItemSpan(int number) {      mNumber = number;  }    public int getNumber() {    return this.mNumber;  }  public int getLeadingMargin(boolean first) {        if (!first) {      return 0;    }          if (mNumber != -1) {          return 2 * NUMBER_RADIUS + STANDARD_GAP_WIDTH;      } else {          return 2 * BULLET_RADIUS + STANDARD_GAP_WIDTH;      }  }  public void drawLeadingMargin(Canvas c, Paint p, int x, int dir, int top,                                int baseline, int bottom, CharSequence text, int start, int end,                                boolean first, Layout l) {          if (((Spanned) text).getSpanStart(this) == start) {          Paint.Style style = p.getStyle();          p.setStyle(Paint.Style.FILL);          if (mNumber != -1) {              c.drawText(mNumber + ".",                   x + dir,                   baseline, p);                        } else {              c.drawText("\u2022", x + dir, baseline, p);          }          p.setStyle(style);      }  }}

-- 源代码引用自 HtmlCleaner Android

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最近在做Android上的富文本编辑器。

有朋友问到

Android 里面有内置的BulletSpan

那带有数字的 number list

应该怎么做呢？

其实如果不会自己写Span

耐心Google 一定能得到相关代码

我借花献佛

把Html Cleaner的代码贴在这里

供大家参考

Android(安卓)富文本编辑器 - ListItemSpan

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