让TextView中有一部分变色很多种方法:
1.
textview.setText(Html.fromHtml(“后面文字颜色属性不一样：变色文字“));
2.
String wholeStr = “后面的颜色将要改变哈哈哈这是要改变的颜色”;
StringFormatUtil spanStr = new StringFormatUtil(this, wholeStr, “这是要改变的颜色”, R.color.blue).fillColor();
textview.setText(spanStr.getResult());
需要用到StringFormatUtil类：
源码：
public class StringFormatUtil {
private SpannableStringBuilder spBuilder;
private String wholeStr, highlightStr;
private Context mContext;
private int color;
private int start = 0, end = 0;

/**
 * 
 * @param context
 * @param wholeStr 全部文字
 * @param highlightStr 改变颜色的文字
 * @param color 颜色
 */
public StringFormatUtil(Context context,String wholeStr,String highlightStr,int color){
    this.mContext=context;
    this.wholeStr=wholeStr;
    this.highlightStr=highlightStr;
    this.color=color;


}


public StringFormatUtil fillColor(){
    if(!TextUtils.isEmpty(wholeStr)&&!TextUtils.isEmpty(highlightStr)){
        if(wholeStr.contains(highlightStr)){
            /*
             *  返回highlightStr字符串wholeStr字符串中第一次出现处的索引。
             */
            start=wholeStr.indexOf(highlightStr);
            end=start+highlightStr.length();
        }else{
            return null;
        }
    }else{
        return null;
    }
    spBuilder=new SpannableStringBuilder(wholeStr);
    color=mContext.getResources().getColor(color);
    CharacterStyle charaStyle=new ForegroundColorSpan(color);
    spBuilder.setSpan(charaStyle, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    return this;
}


public SpannableStringBuilder getResult(){
    if (spBuilder != null) {
        return spBuilder;
    }
    return null;
}

}

自定义变色（也可点击变色）View: