Android String.xml 设置加粗字体/修改字体颜色/动态设置修改文案

之前经常使用Spannable
这次主要在String.xml使用：

效果：

    曲项向天歌 白毛浮绿水]]>
    曲项向天歌 白毛浮绿水]]>
    曲项向天歌
 白毛浮绿水]]>
    曲项向天歌 白毛浮绿水]]>
    曲项向天歌 白毛浮绿水]]>
    曲项向天歌 白毛浮绿水]]>
    曲项向天歌 白毛浮绿水]]>
    曲项向天歌 白毛浮绿水]]>
    曲项向天歌 白毛浮绿水]]>
    曲项向天歌 白毛浮绿水]]>
    
    Hello, %1$s! You have <b>%2$d new messages</b>
    
    %2$d new messages]]>

类里：
 

        TextView second_1_Tv = findViewById(R.id.second_1_Tv);
        second_1_Tv.setText(Html.fromHtml(getResources().getString(R.string.str_bianse)));
        TextView second_2_Tv = findViewById(R.id.second_2_Tv);
        second_2_Tv.setText(Html.fromHtml(getResources().getString(R.string.str_jiacu)));
        TextView second_3_Tv = findViewById(R.id.second_3_Tv);
        second_3_Tv.setText(Html.fromHtml(getResources().getString(R.string.str_huanhang)));
        TextView second_4_Tv = findViewById(R.id.second_4_Tv);
        second_4_Tv.setText(Html.fromHtml(getResources().getString(R.string.str_xieti)));
        TextView second_5_Tv = findViewById(R.id.second_5_Tv);
        second_5_Tv.setText(Html.fromHtml(getResources().getString(R.string.str_xiahuaxian)));
        TextView second_6_Tv = findViewById(R.id.second_6_Tv);
        second_6_Tv.setText(Html.fromHtml(getResources().getString(R.string.str_xiahuaxian_bianse)));
        TextView second_7_Tv = findViewById(R.id.second_7_Tv);
        second_7_Tv.setText(Html.fromHtml(getResources().getString(R.string.str_zhonghuaxian)));
        TextView second_8_Tv = findViewById(R.id.second_8_Tv);
        second_8_Tv.setText(Html.fromHtml(getResources().getString(R.string.str_jiacu2)));
        TextView second_9_Tv = findViewById(R.id.second_9_Tv);
        second_9_Tv.setText(Html.fromHtml(getResources().getString(R.string.str_fangda)));
        TextView second_10_Tv = findViewById(R.id.second_10_Tv);
        second_10_Tv.setText(Html.fromHtml(getResources().getString(R.string.str_souxiao)));

        TextView second_12_Tv = findViewById(R.id.second_12_Tv);
        String text = String.format(getResources().getString(R.string.welcome_messages), "大呲花", 666);
        second_12_Tv.setText(Html.fromHtml(text));

        TextView second_14_Tv = findViewById(R.id.second_14_Tv);
        Spanned spanned = Html.fromHtml(getResources().getString(R.string.welcome_messages2, "大呲花", 666));
        second_14_Tv.setText(spanned);