2022-03-26 LayoutInflaterCompat.

1.基类需要继承AppCompatActivity

主要是为了调用getDelegate()拿到代理

2.要在Activity的super.onCreate(savedInstanceState)之前调用

3.具体替换代码如下：

override fun onCreate(savedInstanceState: Bundle?) {
    //必须在super.onCreate之前调用
    LayoutInflaterCompat.setFactory2(layoutInflater, object : LayoutInflater.Factory2 {
      override fun onCreateView(parent: View?, name: String, context: Context, attrs: AttributeSet): View? {
        val view = delegate.createView(parent, name, context, attrs)
        if (view is TextView) {
          //这里可以修改为自己想要使用的字体
          view.typeface = Typeface.defaultFromStyle(Typeface.NORMAL)
        }
        return view
      }

      override fun onCreateView(name: String, context: Context, attrs: AttributeSet): View? {
        return null
      }
    })
    super.onCreate(savedInstanceState)
    ......
  }