SpannableString简介

参考链接：
http://www.cnblogs.com/jisheng/archive/2013/01/10/2854088.html
http://www.jianshu.com/p/d4349a4ca216

package com.lml.activity.spanablestrtest;

import android.content.res.Resources;
import android.graphics.BlurMaskFilter;
import android.graphics.Color;
import android.graphics.EmbossMaskFilter;
import android.graphics.Typeface;
import android.graphics.drawable.Drawable;
import android.support.v4.content.res.ResourcesCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.method.LinkMovementMethod;
import android.text.style.AbsoluteSizeSpan;
import android.text.style.BackgroundColorSpan;
import android.text.style.ClickableSpan;
import android.text.style.DynamicDrawableSpan;
import android.text.style.ForegroundColorSpan;
import android.text.style.ImageSpan;
import android.text.style.MaskFilterSpan;
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.TextAppearanceSpan;
import android.text.style.URLSpan;
import android.text.style.UnderlineSpan;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

TextView tv_show = (TextView)findViewById(R.id.tv_strshow);

SpannableString spanText = getBackgroundColorSpanStr("BackgroundColor");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getForegroundColorSpanStr("ForegroundColor");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getBlurMaskSpanStr("BlurMask");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getEmbossMaskSpanStr("EmbossMask");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getStrikethroughSpanStr("Strikethrough");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getUnderlineSpanStr("Underline");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getAbsoluteSizeSpanStr("AbsoluteSize");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getDynamicDrawableSpanStr("DynamicDrawable");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getImageSpanStr("Image");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getScaleXSpanStr("ScaleX");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getStyleSpanStr("Style");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getClickableSpanStr("Clickable");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getSubscriptSpanStr("Subscript");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getSuperscriptSpanStr("Superscript");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getURLSpanStr("URLSpanStr");
tv_show.append(spanText);
tv_show.append("\n");

spanText = getTextAppearanceSpanStr("TextAppearance");
tv_show.append(spanText);

tv_show.setMovementMethod(LinkMovementMethod.getInstance());

}

/**
* 背景色
* @param str
* @return
*/
private SpannableString getBackgroundColorSpanStr(String str){
SpannableString spanText = new SpannableString(str);
spanText.setSpan(new BackgroundColorSpan(Color.BLUE), 0, spanText.length(),
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
return spanText ;
}

/**
* 前景色
* @param str
* @return
*/
private SpannableString getForegroundColorSpanStr(String str){
SpannableString spanText = new SpannableString(str);
spanText.setSpan(new ForegroundColorSpan(Color.BLUE), 0, spanText.length(),
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
return spanText ;
}

/**
* 模糊
* @param str
* @return
*/
private SpannableString getBlurMaskSpanStr(String str) {
SpannableString spanText = new SpannableString(str);
MaskFilterSpan maskFilterSpan = new MaskFilterSpan(new BlurMaskFilter(3, BlurMaskFilter.Blur.OUTER));
spanText.setSpan(maskFilterSpan, 0, spanText.length(), Spannable.
SPAN_INCLUSIVE_EXCLUSIVE);
return spanText;
}

/**
* 浮雕
* @param str
* @return
*/
private SpannableString getEmbossMaskSpanStr(String str) {
SpannableString spanText = new SpannableString(str);
//浮雕(EmbossMaskFilter)
MaskFilterSpan maskFilterSpan = new MaskFilterSpan(new EmbossMaskFilter(new float[]{1,1,3}, 1.5f, 8, 3));
spanText.setSpan(maskFilterSpan, 0, spanText.length(), Spannable.
SPAN_INCLUSIVE_EXCLUSIVE);
return spanText;
}

/**
* 光栅
* @param str
* @return
*/
private SpannableString getStrikethroughSpanStr(String str){
SpannableString spanText = new SpannableString(str);
spanText.setSpan(new StrikethroughSpan(), 0, spanText.length(), Spannable.
SPAN_INCLUSIVE_EXCLUSIVE);
return spanText ;
}

/**
* 下划线
* @param str
* @return
*/
private SpannableString getUnderlineSpanStr(String str){
SpannableString spanText = new SpannableString(str);
spanText.setSpan(new UnderlineSpan(), 0, spanText.length(), Spannable.
SPAN_INCLUSIVE_EXCLUSIVE);
return spanText ;
}

/**
* 绝对大小
* @param str
* @return
*/
private SpannableString getAbsoluteSizeSpanStr(String str){
SpannableString spanText = new SpannableString(str);
spanText.setSpan(new AbsoluteSizeSpan(20, true), 0, spanText.length(), Spannable.
SPAN_INCLUSIVE_EXCLUSIVE);
return spanText ;
}

/**
* 动态图
* @param str
* @return
*/
private SpannableString getDynamicDrawableSpanStr(String str){
SpannableString spanText = new SpannableString(str);
DynamicDrawableSpan drawableSpan = new DynamicDrawableSpan(
DynamicDrawableSpan.ALIGN_BOTTOM) {
@Override
public Drawable getDrawable() {

Drawable d = ResourcesCompat.getDrawable(getResources(), R.mipmap.ic_launcher, null);
d.setBounds(0, 0, 50, 50);
return d;
}
};
spanText.setSpan(drawableSpan, 1, 2, Spannable.
SPAN_INCLUSIVE_EXCLUSIVE);
return spanText ;
}

/**
* 图片
* @param str
* @return
*/
private SpannableString getImageSpanStr(String str){
SpannableString spanText = new SpannableString(str);
Drawable d = ResourcesCompat.getDrawable(getResources(), R.mipmap.ic_launcher, null);
d.setBounds(0, 0, 50, 50);
spanText.setSpan(new ImageSpan(d), 3, 4, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
return spanText ;
}

/**
* 缩放
* @param str
* @return
*/
private SpannableString getScaleXSpanStr(String str){
SpannableString spanText = new SpannableString(str);
spanText.setSpan(new ScaleXSpan(3.8f), 2, 4, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
return spanText ;
}

/**
* 样式
* @param str
* @return
*/
private SpannableString getStyleSpanStr(String str){
SpannableString spanText = new SpannableString(str);
spanText.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 2, 3,
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
return spanText ;
}

/**
* 点击
* @param str
* @return
*/
private SpannableString getClickableSpanStr(String str){
SpannableString spanText = new SpannableString(str);
spanText.setSpan(new ClickableSpan() {
@Override
public void onClick(View widget) {
Toast.makeText(MainActivity.this,"onclick",Toast.LENGTH_SHORT).show();
}
}, 3, spanText.length(),
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
return spanText ;
}

/**
* 下标
* @param str
* @return
*/
private SpannableString getSubscriptSpanStr(String str){
SpannableString spanText = new SpannableString(str);
spanText.setSpan(new SubscriptSpan(), 2, 3, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
return spanText ;
}

/**
* 上标
* @param str
* @return
*/
private SpannableString getSuperscriptSpanStr(String str){
SpannableString spanText = new SpannableString(str);
spanText.setSpan(new SuperscriptSpan(), 2, 3, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
return spanText ;
}

/**
* url
* @param str
* @return
*/
private SpannableString getURLSpanStr(String str){
SpannableString spanText = new SpannableString(str);
spanText.setSpan(new URLSpan("http://www.baidu.com"), 3, spanText.length(),
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
return spanText ;
}


/**
* 文本外貌
* @param str
* @return
*/
private SpannableString getTextAppearanceSpanStr(String str){
SpannableString spanText = new SpannableString(str);
spanText.setSpan(new TextAppearanceSpan(this, android.R.style.TextAppearance_Medium),
2, 3, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
return spanText ;
}

}

[img]http://dl2.iteye.com/upload/attachment/0121/8836/f7defbbd-7cba-337d-9ca5-5f3fc1840a1a.png[/img]