SpannableString属性详解

1、BackgroundColorSpan 背景色

2、ClickableSpan 文本可点击，有点击事件


3、ForegroundColorSpan 文本颜色（前景色）


4、MaskFilterSpan 修饰效果，如模糊(BlurMaskFilter)、浮雕(EmbossMaskFilter)


5、MetricAffectingSpan 父类，一般不用


6、RasterizerSpan
光栅效果


7、StrikethroughSpan
删除线（中划线）


8、SuggestionSpan
相当于占位符


9、UnderlineSpan
下划线


10、AbsoluteSizeSpan
绝对大小（文本字体）


11、DynamicDrawableSpan
设置图片，基于文本基线或底部对齐。


12、ImageSpan
图片


13、RelativeSizeSpan
相对大小（文本字体）


14、ReplacementSpan
父类，一般不用


15、ScaleXSpan
基于x轴缩放


16、StyleSpan
字体样式：粗体、斜体等


17、SubscriptSpan
下标（数学公式会用到）


18、SuperscriptSpan
上标（数学公式会用到）


19、TextAppearanceSpan
文本外貌（包括字体、大小、样式和颜色）


20、TypefaceSpan
文本字体


21、URLSpan
文本超链接

BackgroundColorSpan 背景色

SpannableString spanText = new SpannableString("benzlocke");

spanText.setSpan(new BackgroundColorSpan(Color.GREEN), 0, spanText.length(),

Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

ForegroundColorSpan 文本颜色（前景色）

spanText = new SpannableString("benzlocke");

spanText.setSpan(new ForegroundColorSpan(Color.BLUE), 6, spanText.length(),

Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

MaskFilterSpan 修饰效果，如模糊(BlurMaskFilter)、浮雕(EmbossMaskFilter)

spanText = new SpannableString("benzlocke");

int length = spanText.length();

//模糊(BlurMaskFilter)

MaskFilterSpan maskFilterSpan = new MaskFilterSpan(new BlurMaskFilter(3, Blur.OUTER));

spanText.setSpan(maskFilterSpan, 0, length - 10, Spannable.

SPAN_INCLUSIVE_EXCLUSIVE);

//浮雕(EmbossMaskFilter)

maskFilterSpan = new MaskFilterSpan(new EmbossMaskFilter(new float[]{1,1,3}, 1.5f, 8, 3));

spanText.setSpan(maskFilterSpan, length - 10, length, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

RasterizerSpan 光栅效果

spanText = new SpannableString("StrikethroughSpan");

spanText.setSpan(new StrikethroughSpan(), 0, 7, Spannable.

SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

StrikethroughSpan 删除线

spanText = new SpannableString("StrikethroughSpan");

spanText.setSpan(new StrikethroughSpan(), 0, 7, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

SuggestionSpan

相当于占位符，一般用在EditText输入框中。当双击此文本时，会弹出提示框选择一些建议（推荐的）文字，选中的文本将替换此占位符。在输入法上用的较多。

UnderlineSpan 下划线

spanText = new SpannableString("UnderlineSpan");

spanText.setSpan(new UnderlineSpan(), 0, spanText.length(),

Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

AbsoluteSizeSpan 绝对大小（文本字体）

spanText = new SpannableString("AbsoluteSizeSpan");

spanText.setSpan(new AbsoluteSizeSpan(20, true), 0, spanText.length(),

Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

DynamicDrawableSpan 设置图片，基于文本基线或底部对齐。

DynamicDrawableSpan drawableSpan = new DynamicDrawableSpan(DynamicDrawableSpan.ALIGN_BASELINE) {

@Override

public Drawable getDrawable() {

Drawable d = getResources().getDrawable(R.drawable.ic_launcher);

d.setBounds(0, 0, 50, 50);

return d;

}

};

DynamicDrawableSpan drawableSpan2 = new DynamicDrawableSpan(

DynamicDrawableSpan.ALIGN_BOTTOM) {

@Override

public Drawable getDrawable() {

Drawable d = getResources().getDrawable(R.drawable.ic_launcher);

d.setBounds(0, 0, 50, 50);

return d;

}

};

spanText.setSpan(drawableSpan, 3, 4, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

spanText.setSpan(drawableSpan2, 7, 8, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

//左边图片基于基线对齐，右边图片基于底部对齐

ImageSpan 图片

spanText = new SpannableString("ImageSpan");

Drawable d = getResources().getDrawable(R.drawable.ic_launcher);

d.setBounds(0, 0, 50, 50);

spanText.setSpan(new ImageSpan(d), 3, 4, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

//和DynamicDrawableSpan差别不大

RelativeSizeSpan 相对大小（文本字体）

spanText = new SpannableString("RelativeSizeSpan");

//参数proportion:比例大小

spanText.setSpan(new RelativeSizeSpan(2.5f), 3, 4,

Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

//相对大小的比例是基于当前文本字体大小

ScaleXSpan 基于x轴缩放

spanText = new SpannableString("benzlocke");

//参数proportion:比例大小

spanText.setSpan(new ScaleXSpan(3.8f), 3, 7, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

StyleSpan 字体样式：粗体、斜体等

spanText = new SpannableString("benzlocke");

//Typeface.BOLD_ITALIC:粗体+斜体

spanText.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 3, 7,

Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

SubscriptSpan 下标（数学公式会用到）

spanText = new SpannableString("benzlocke");

spanText.setSpan(new SubscriptSpan(), 6, 7, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

SuperscriptSpan 上标（数学公式会用到）

spanText = new SpannableString("benzlocke");

spanText.setSpan(new SuperscriptSpan(), 6, 7, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

TextAppearanceSpan 文本外貌（包括字体、大小、样式和颜色）

spanText = new SpannableString("benzlocke");

//若需自定义TextAppearance，可以在系统样式上进行修改

spanText.setSpan(new TextAppearanceSpan(this, android.R.style.TextAppearance_Medium), 6, 7, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

//系统还提供了相关值TextAppearance_Small, TextAppearance_Large等。如有需要可在以上样式基础上修改。

TypefaceSpan 文本字体

spanText = new SpannableString("benzlocke");

//若需使用自定义字体，可能要重写类TypefaceSpan

spanText.setSpan(new TypefaceSpan("monospace"), 3, 10,

Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

//关于自定义字体的设置，后面将介绍如何使用

URLSpan 文本超链接

spanText = new SpannableString("benzlocke");

spanText.setSpan(new URLSpan("http://orgcent.com"), 10, spanText.length(),

Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

mTVText.append("\n");

mTVText.append(spanText);

//让URLSpan可以点击

mTVText.setMovementMethod(new LinkMovementMethod());



private void addUrlSpan() {

SpannableString spanString = new SpannableString("超链接");

URLSpan span = new URLSpan("tel:0123456789");

spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}







private void addBackColorSpan() {

SpannableString spanString = new SpannableString("文字背景颜色");

BackgroundColorSpan span = new BackgroundColorSpan(Color.YELLOW);

spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}







private void addForeColorSpan() {

SpannableString spanString = new SpannableString("文字前景颜色");

ForegroundColorSpan span = new ForegroundColorSpan(Color.BLUE);

spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}







private void addFontSpan() {

SpannableString spanString = new SpannableString("36号字体");

AbsoluteSizeSpan span = new AbsoluteSizeSpan(36);

spanString.setSpan(span, 0, 5, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}







private void addStyleSpan() {

SpannableString spanString = new SpannableString("BIBI");

StyleSpan span = new StyleSpan(Typeface.BOLD_ITALIC);//加粗

spanString.setSpan(span, 0, 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}







private void addStrikeSpan() {

SpannableString spanString = new SpannableString("删除线");

StrikethroughSpan span = new StrikethroughSpan();

spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}





private void addUnderLineSpan() {

SpannableString spanString = new SpannableString("下划线");

UnderlineSpan span = new UnderlineSpan();

spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}







//图片

private void addImageSpan() {

SpannableString spanString = new SpannableString(" ");

Drawable d = getResources().getDrawable(R.drawable.ic_launcher);

d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());

ImageSpan span = new ImageSpan(d, ImageSpan.ALIGN_BASELINE);

spanString.setSpan(span, 0, 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}

}