由于Android TextView最大宽度尾部省略号的场景，在内容含有Span的时候，并未对Span处理，导致达到最大宽度尾部无省略号，甚至Span绘制不完全等异常现象，就该问题进行处理。
虽然我发现包括，手Q、脉脉、网易云音乐等在这块处理都有问题，或者是都没有处理吧。。。因此欣然的写了这个算法。抱着造福一方的心态开源。。
最终的解决是猛然回头发现android.text.TextUtils#ellipsize(...):CharSequence已经很好的封装了类似的功能。
还是没有明白解决啥问题？不多废话，上图!
简单如下:
mDemoTv.setText(SpanEllipsizeEndHelper.matchMaxWidth(demoSS, mDemoTv));
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