Android中的AlertDialog遇到的错误

public void showAddIPCDialog() {    Log.i("ssssssssss","wwwwwwwwww");    LayoutInflater inflater = this.getActivity().getLayoutInflater();    Log.i("ssssssssssinflater",inflater+"");//错误  //  final View layout = inflater.inflate(R.layout.addipc, (ViewGroup) findViewById(R.id.addipc_dialog));//添加布局

//正确   final View layout = inflater.inflate(R.layout.addipc, null);//添加布局

Log.i("sssssssssslayout",layout+"");  EditText etName = (EditText) layout.findViewById(R.id.et_camera_name);    EditText edit = (EditText) layout.findViewById(R.id.sn);    EditText editps = (EditText) layout.findViewById(R.id.password);

new AlertDialog.Builder(this.getActivity()).setTitle("添加监控摄像头").setView(layout)            .setPositiveButton("确定", new DialogInterface.OnClickListener() {                public void onClick(DialogInterface arg0, int arg1) {

}            }).setNegativeButton("取消", null).show();}

//总结：复制需谨慎