带EditText的AlertDialog 白色主题 拿来就用

final EditText et = new EditText(this);  

        new AlertDialog.Builder(this,AlertDialog.THEME_HOLO_LIGHT)
        .setTitle("请填写重新预约原因")  
//      .setIcon(android.R.drawable.ic_dialog_info)  
        .setView(et)  
        .setCancelable(false)
        .setPositiveButton("确定", new DialogInterface.OnClickListener() {  
            public void onClick(DialogInterface dialog, int which) {  
            String input = et.getText().toString();  
            if (input.equals("")) {  
                Toast.makeText(getApplicationContext(), "重新预约原因不能为空！" + input, Toast.LENGTH_LONG).show();  
            }  
            else {  
                upLoadReason(input);
                }  
            }  
            })  
        .setNegativeButton("取消", null)  
        .show();