android文本编辑工具类之SpannableStringUtils
16lz
2021-01-26
android文本编辑工具类之SpannableStringUtils
来源：http://www.jianshu.com/p/960467ac56c8
有没有心动一下哈，下面就让老司机为你们开路。
- getBuilder : 获取建造者
- setFlag : 设置标识
- setForegroundColor: 设置前景色
- setBackgroundColor: 设置背景色
- setQuoteColor : 设置引用线的颜色
- setLeadingMargin : 设置缩进
- setBullet : 设置列表标记
- setProportion : 设置字体比例
- setXProportion : 设置字体横向比例
- setStrikethrough : 设置删除线
- setUnderline : 设置下划线
- setSuperscript : 设置上标
- setSubscript : 设置下标
- setBold : 设置粗体
- setBoldItalic : 设置粗斜体
- setAlign : 设置对齐
- setDrawable : 设置图片
- setUri : 设置图片
- setResourceId : 设置图片
- setClickSpan : 设置点击事件
- setUrl : 设置超链接
- setBlur : 设置模糊
- append : 追加样式字符串
- create : 创建样式字符串
具体路线
都是明白人话不多说，码上开始：
package com.blankj.utilcode.utils;import android.graphics.Bitmap; import android.graphics.BlurMaskFilter; import android.graphics.Typeface; import android.graphics.drawable.Drawable; import android.net.Uri; import android.support.annotation.ColorInt; import android.support.annotation.DrawableRes; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.text.Layout.Alignment; import android.text.SpannableStringBuilder; import android.text.Spanned; import android.text.style.AlignmentSpan; import android.text.style.BackgroundColorSpan; import android.text.style.BulletSpan; import android.text.style.ClickableSpan; import android.text.style.ForegroundColorSpan; import android.text.style.ImageSpan; import android.text.style.LeadingMarginSpan; import android.text.style.MaskFilterSpan; import android.text.style.QuoteSpan; import android.text.style.RelativeSizeSpan; import android.text.style.ScaleXSpan; import android.text.style.StrikethroughSpan; import android.text.style.StyleSpan; import android.text.style.SubscriptSpan; import android.text.style.SuperscriptSpan; import android.text.style.TypefaceSpan; import android.text.style.URLSpan; import android.text.style.UnderlineSpan;import static android.graphics.BlurMaskFilter.Blur;public class SpannableStringUtils { private SpannableStringUtils() { throw new UnsupportedOperationException("u can't instantiate me..."); } /** * 获取建造者 * * @return {@link Builder} */ public static Builder getBuilder(@NonNull CharSequence text) { return new Builder(text); } public static class Builder { private int defaultValue = 0x12000000; private CharSequence text; private int flag; @ColorInt private int foregroundColor; @ColorInt private int backgroundColor; @ColorInt private int quoteColor; private boolean isLeadingMargin; private int first; private int rest; private boolean isBullet; private int gapWidth; private int bulletColor; private float proportion; private float xProportion; private boolean isStrikethrough; private boolean isUnderline; private boolean isSuperscript; private boolean isSubscript; private boolean isBold; private boolean isItalic; private boolean isBoldItalic; private String fontFamily; private Alignment align; private boolean imageIsBitmap; private Bitmap bitmap; private boolean imageIsDrawable; private Drawable drawable; private boolean imageIsUri; private Uri uri; private boolean imageIsResourceId; @DrawableRes private int resourceId; private ClickableSpan clickSpan; private String url; private boolean isBlur; private float radius; private Blur style; private SpannableStringBuilder mBuilder; private Builder(@NonNull CharSequence text) { this.text = text; flag = Spanned.SPAN_EXCLUSIVE_EXCLUSIVE; foregroundColor = defaultValue; backgroundColor = defaultValue; quoteColor = defaultValue; proportion = -1; xProportion = -1; mBuilder = new SpannableStringBuilder(); } /** * * 设置标识 * * @param flag * <ul> * * * <li>{@link Spanned#SPAN_INCLUSIVE_EXCLUSIVE}li> * * <li>{@link Spanned#SPAN_INCLUSIVE_INCLUSIVE}li> * * <li>{@link Spanned#SPAN_EXCLUSIVE_EXCLUSIVE}li> * * <li>{@link Spanned#SPAN_EXCLUSIVE_INCLUSIVE}li> * * ul> * * @return {@link Builder} */ public Builder setFlag(int flag) { this.flag = flag; return this; } /** * * 设置前景色 * * @param color 前景色 * @return {@link Builder} */ public Builder setForegroundColor(@ColorInt int color) { this.foregroundColor = color; return this; } /** * * 设置背景色 * * * @param color * 背景色 * @return {@link Builder} */ public Builder setBackgroundColor(@ColorInt int color) { this.backgroundColor = color; return this; } /** * 设置引用线的颜色 * * * @param color * 引用线的颜色 * @return {@link Builder} */ public Builder setQuoteColor(@ColorInt int color) { this.quoteColor = color; return this; } /** * * 设置缩进 * * @param first 首行缩进 * * @param rest * 剩余行缩进 * @return {@link Builder} */ public Builder setLeadingMargin(int first, int rest) { this.first = first; this.rest = rest; isLeadingMargin = true; return this; } /** * * 设置列表标记 * * * @param gapWidth * 列表标记和文字间距离 * * @param color * 列表标记的颜色 * @return {@link Builder} */ public Builder setBullet(int gapWidth, int color) { this.gapWidth = gapWidth; bulletColor = color; isBullet = true; return this; } /** * * 设置字体比例 * * * * @param proportion * 比例 * * @return {@link Builder} */ public Builder setProportion(float proportion) { this.proportion = proportion; return this; } /** * * 设置字体横向比例 * * @param proportion 比例 * @return {@link Builder} */ public Builder setXProportion(float proportion) { this.xProportion = proportion; return this; } /** * * 设置删除线 * * * @return {@link Builder} */ public Builder setStrikethrough() { this.isStrikethrough = true; return this; } /** * * 设置下划线 * * * * @return {@link Builder} */ public Builder setUnderline() { this.isUnderline = true; return this; } /** * * 设置上标 * * * * @return {@link Builder} */ public Builder setSuperscript() { this.isSuperscript = true; return this; } /** * * 设置下标 * * * @return {@link Builder} */ public Builder setSubscript() { this.isSubscript = true; return this; } /** * * 设置粗体 * * * @return {@link Builder} */ public Builder setBold() { isBold = true; return this; } /** * 设置斜体 * * @return {@link Builder} */ public Builder setItalic() { isItalic = true; return this; } /** * 设置粗斜体 * * @return {@link Builder} */ public Builder setBoldItalic() { isBoldItalic = true; return this; } /** * * 设置字体 * * @param fontFamily 字体 * * <ul> * * * <li>monospaceli> * * <li>serifli> * * <li>sans-serifli> * * ul> * * @return {@link Builder} */ public Builder setFontFamily(@Nullable String fontFamily) { this.fontFamily = fontFamily; return this; } /** * * 设置对齐 * * <ul> * * * <li>{@link Alignment#ALIGN_NORMAL}正常li> * * <li>{@link Alignment#ALIGN_OPPOSITE}相反li> * * <li>{@link Alignment#ALIGN_CENTER}居中li> * * ul> * * * @return {@link Builder} */ public Builder setAlign(@Nullable Alignment align) { this.align = align; return this; } /** * 设置图片 * * * @param bitmap 图片位图 * * @return {@link Builder} */ public Builder setBitmap(@NonNull Bitmap bitmap) { this.bitmap = bitmap; imageIsBitmap = true; return this; } /** * 设置图片 * * * @param drawable 图片资源 * * @return {@link Builder} */ public Builder setDrawable(@NonNull Drawable drawable) { this.drawable = drawable; imageIsDrawable = true; return this; } /** * 设置图片 * * * @param uri 图片uri * * @return {@link Builder} */ public Builder setUri(@NonNull Uri uri) { this.uri = uri; imageIsUri = true; return this; } /** * 设置图片 * * @param resourceId 图片资源id * @return {@link Builder} */ public Builder setResourceId(@DrawableRes int resourceId) { this.resourceId = resourceId; imageIsResourceId = true; return this; } /** * * 设置点击事件 * * <p> * 需添加view.setMovementMethod(LinkMovementMethod.getInstance()) * p> * * @param clickSpan 点击事件 * @return {@link Builder} */ public Builder setClickSpan(@NonNull ClickableSpan clickSpan) { this.clickSpan = clickSpan; return this; } /** * * 设置超链接 * * <p> * 需添加view.setMovementMethod(LinkMovementMethod.getInstance()) * p> * * * @param url 超链接 * @return {@link Builder} */ public Builder setUrl(@NonNull String url) { this.url = url; return this; } /** * * 设置模糊 * * <p> * 尚存bug，其他地方存在相同的字体的话，相同字体出现在之前的话那么就不会模糊，出现在之后的话那会一起模糊 * p> * * * <p> * 推荐还是把所有字体都模糊这样使用 * p> * * * @param radius 模糊半径（需大于0） * @param style 模糊样式 * <ul> * * * <li>{@link Blur#NORMAL}li> * * <li>{@link Blur#SOLID}li> * * <li>{@link Blur#OUTER}li> * * <li>{@link Blur#INNER}li> * * ul> * * @return {@link Builder} */ public Builder setBlur(float radius, Blur style) { this.radius = radius; this.style = style; this.isBlur = true; return this; } /** * * 追加样式字符串 * * * @param text 样式字符串文本 * * @return {@link Builder} */ public Builder append(@NonNull CharSequence text) { setSpan(); this.text = text; return this; } /** * 创建样式字符串 * * @return 样式字符串 */ public SpannableStringBuilder create() { setSpan(); return mBuilder; } /** * * 设置样式 */ private void setSpan() { int start = mBuilder.length(); mBuilder.append(this.text); int end = mBuilder.length(); if (foregroundColor != defaultValue) { mBuilder.setSpan(new ForegroundColorSpan(foregroundColor),start, end, flag); foregroundColor = defaultValue; if (backgroundColor != defaultValue) { mBuilder.setSpan(new BackgroundColorSpan(backgroundColor),start, end, flag); backgroundColor = defaultValue; } if (isLeadingMargin) { mBuilder.setSpan(new LeadingMarginSpan.Standard(first, rest),start, end, flag); isLeadingMargin = false; if (quoteColor != defaultValue) { mBuilder.setSpan(new QuoteSpan(quoteColor), start, end, 0); quoteColor = defaultValue; } if (isBullet) { mBuilder.setSpan(new BulletSpan(gapWidth, bulletColor), start,end, 0); isBullet = false; if (proportion != -1) { mBuilder.setSpan(new RelativeSizeSpan(proportion), start, end,flag); proportion = -1; } if (xProportion != -1) { mBuilder.setSpan(new ScaleXSpan(xProportion), start, end, flag); xProportion = -1; if (isStrikethrough) { mBuilder.setSpan(new StrikethroughSpan(), start, end, flag); isStrikethrough = false; } if (isUnderline) { mBuilder.setSpan(new UnderlineSpan(), start, end, flag); isUnderline = false; if (isSuperscript) { mBuilder.setSpan(new SuperscriptSpan(), start, end, flag); isSuperscript = false; } if (isSubscript) { mBuilder.setSpan(new SubscriptSpan(), start, end, flag); isSubscript = false; if (isBold) { mBuilder.setSpan(new StyleSpan(Typeface.BOLD), start, end, flag); isBold = false; } if (isItalic) { mBuilder.setSpan(new StyleSpan(Typeface.ITALIC), start, end,flag); isItalic = false; if (isBoldItalic) { mBuilder.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), start,end, flag); isBoldItalic = false; } if (fontFamily != null) { mBuilder.setSpan(new TypefaceSpan(fontFamily), start, end, flag); fontFamily = null; if (align != null) { mBuilder.setSpan(new AlignmentSpan.Standard(align), start, end,flag); align = null; } if (imageIsBitmap || imageIsDrawable || imageIsUri || imageIsResourceId) { if (imageIsBitmap) { mBuilder.setSpan(new ImageSpan(Utils.context, bitmap), start, end, flag); bitmap = null; imageIsBitmap = false; } else if (imageIsDrawable) { mBuilder.setSpan(new ImageSpan(drawable), start, end, flag); drawable = null; imageIsDrawable = false; } else if (imageIsUri) { mBuilder.setSpan(new ImageSpan(Utils.context, uri), start,end, flag); uri = null; imageIsUri = false; } else { mBuilder.setSpan(new ImageSpan(Utils.context, resourceId),start, end, flag); resourceId = 0; imageIsResourceId = false; } } if (clickSpan != null) { mBuilder.setSpan(clickSpan, start, end, flag); clickSpan = null; } if (url != null) { mBuilder.setSpan(new URLSpan(url), start, end, flag); url = null; } if (isBlur) { mBuilder.setSpan(newMaskFilterSpan(new BlurMaskFilter(radius,style)), start, end, flag); isBlur = false; } flag = Spanned.SPAN_EXCLUSIVE_EXCLUSIVE; } }}终点站
心动了赶紧就去试试吧！这只是一个起到参照作用，实际工作中可以根据不同的需求来完善其功能。
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