AlertDialog requestFeature() must be called before adding content问题

将alert.setCentView()、 alertDialog.getWindow()放到alertDialog.show()后边

View myView = LayoutInflater.from(getActivity()).inflate(R.layout.dialog_alert, null, false);
AlertDialog alertDialog = new AlertDialog.Builder(getActivity()).create();
// 将alert.setCentView(xx); alertDialog.getWindow()；放到alertDialog.show();后边
// 否则，你会收到requestFeature() must be called before adding content这样的错误
alertDialog.show();
alertDialog.setContentView(myView);
((TextView) myView.findViewById(R.id.tv_alert)).setText("您的信息已收到！");
TextView submitBtn = (TextView) myView.findViewById(R.id.tv_alert_submit);
submitBtn.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
       alertDialog.dismiss();
    }
});

或者在show之前调用AlertDialog.Builder.setView()，如下所示;

new AlertDialog.Builder(getActivity())
          .setView(myView)
          .setMessage("这是一条测试消息")
          .setPositiveButton("确定", null)
          .setNegativeButton("取消", null)
          .show();

谢谢阅读！