以一种更酷的方式使用TextView

本文SpannableString已封装为libary上传github和jitpack，欢迎使用，地址：SpannableHelper

用法：

SpannableStringUtils spannableStringUtils = new SpannableStringUtils("飞流直下三千尺，疑是银河落九天");

        spannableStringUtils.setColor(Color.GREEN, 2, 6)
                .setBackGround(ContextCompat.getColor(this,R.color.bbb), 4, 8)
                .setBold(6, 10)
                .setOnClick(9, 14, ContextCompat.getColor(this,R.color.aaa))
                .setImage(this, R.mipmap.ic_launcher, 3, 6, 120, 160)
                .setOnClickSpanListener(new SpannableStringUtils.OnClickSpanListener() {
                    @Override
                    public void OnClickSpanListener() {

                        Toast.makeText(MainActivity.this, "点我", Toast.LENGTH_SHORT).show();
                    }
                });

        textView.setMovementMethod(LinkMovementMethod.getInstance());
        textView.setTextSize(20);
        textView.setText(spannableStringUtils);

简介：

spannableString和string类似都是一种字符串类型，都可以用于textview设置为版本

setSpan((Object what, int start, int end, int flags))

• what:设置格式
• start：开始下标索引
• end：结束下表索引
• flags：
  • Spanned.SPAN_INCLUSIVE_EXCLUSIVE从起始下标到终了下标，包括起始下标
  • Spanned.SPAN_INCLUSIVE_INCLUSIVE 从起始下标到终了下标，同时包括起始下标和终了下标
  • Spanned.SPAN_EXCLUSIVE_EXCLUSIVE 从起始下标到终了下标，但都不包括起始下标和终了下标
  • Spanned.SPAN_EXCLUSIVE_INCLUSIVE 从起始下标到终了下标，包括终了下标

使用

改变字体颜色

SpannableString spannableString = new SpannableString("文字为绿色");
ForegroundColorSpan colorSpan = new ForegroundColorSpan(Color.parseColor("#57caa1"));
spannableString.setSpan(colorSpan, 2, spannableString.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

设置背景色

SpannableString spannableString = new SpannableString("大珠小珠落玉盘");
BackgroundColorSpan colorSpan = new BackgroundColorSpan(Color.parseColor("#57caa1"));
spannableString.setSpan(colorSpan, 2, spannableString.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

设置文字大小

SpannableString spannableString = new SpannableString("大珠小珠落玉盘");
RelativeSizeSpan sizeSpan01 = new RelativeSizeSpan(1.2f);
spannableString.setSpan(sizeSpan01, 0, 1, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

设置文字中划线

SpannableString spannableString = new SpannableString("锄禾日当午，汗滴禾下土");
StrikethroughSpan span = new StrikethroughSpan();
spannableString.setSpan(span, 2, spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

设置下划线

SpannableString spannableString = new SpannableString("谁知盘中餐，汗滴禾下土");
UnderlineSpan span = new UnderlineSpan();
spannableString.setSpan(span, 2, spannableString.length(),Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

设置上下标

上标

SpannableString spannableString = new SpannableString("飞流直下三千尺，疑是银河落九天");
SuperscriptSpan span = new SuperscriptSpan();
spannableString.setSpan(span, 2, spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

下标

SpannableString spannableString = new SpannableString("飞流直下三千尺，疑是银河落九天");
SubscriptSpan span = new SubscriptSpan();
spannableString.setSpan(span, 2, spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

设置粗体、斜体

SpannableString spannableString = new SpannableString("飞流直下三千尺，疑是银河落九天");
StyleSpan span1 = new StyleSpan(Typeface.BOLD);
StyleSpan span2  = new StyleSpan(Typeface.ITALIC);
spannableString.setSpan(span1, 2, 4, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
spannableString.setSpan(span2, 5, 8, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setHighlightColor(Color.parseColor("#57caa1"));
textView.setText(spannableString);

添加表情

SpannableString spannableString = new SpannableString("飞流直下三千尺");
Drawable drawable = getResources().getDrawable(R.mipmap.ic);
drawable.setBounds(0, 0, 22, 22);
ImageSpan span = new ImageSpan(drawable);
spannableString.setSpan(span, 3, 4, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

设置监听事件

 SpannableString spannableString = new SpannableString(item.getContent());
 
    ClickableSpan span = new ClickableSpan() {
      
        @Override
        public void onClick(View widget) {
    
            ToastUtils.show(getActivity(), "haha");
      
        }
        
        @Override
        public void updateDrawState(TextPaint ds) {
            super.updateDrawState(ds);
            ds.setColor(ds.linkColor);
            ds.setUnderlineText(false);
       }
    };
spannableString.setSpan(span, 2, item.getContent().length(), Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
ForegroundColorSpan cspan = newForegroundColorSpan(Color.parseColor("#57caa1")); 
spannableString.setSpan(cspan, 2, item.getContent().length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
TextView textView = helper.getView(R.id.group_count);
textView.setText(spannableString);
//控制点击的时候的背景色
textView.setHighlightColor(Color.parseColor("#57caa1"));
textView.setMovementMethod(LinkMovementMethod.getInstance());