//参数为字体文件的存储路径
mTimeView.setTypeface(Typeface.createFromFile(pathStr));
//参数是字体文件File对象
mTimeView.setTypeface(Typeface.createFromFile(file));
//参数2是字体文件在assert文件夹下的路径
mTimeView.setTypeface(Typeface.createFromAsset(getContext().getAssets(), "a"));