Android学习-第3天

今天所学习的内容为向项目中添加图标资源,以及直接在XML文件中引用资源。

首先将图标文件放入到资源目录中,然后在activity_quiz.xml中引用资源,具体代码如下:

<?xml version = “1.0” encoding = “utf-8”?>
 < LinearLayout xmlns:android = “http://schemas.android.com/apk/res/android”
 android :layout_width = “match_parent”
 android :layout_height = “ match_parent“
 android :gravity = ”center“
 android :orientation = ”vertical“ >                

    < TextView
 android :id = “@ + id / question_text_view”
 android :layout_width = “wrap_content”
 android :layout_height = “wrap_content”
 android :padding = “24dp” />                                

    < LinearLayout
 android :layout_width = “wrap_content”
 android :layout_height = “wrap_content”
 android :orientation = “horizo​​ntal” >                        

        < button android :id = “@ + id / true_button”
 android :layout_width = “wrap_content”
 android :layout_height = “wrap_content”
 android :text = “@ string / true_button” />
                                                

        < button android :id = “@ + id / false_button”
 android :layout_width = “wrap_content”
 android :layout_height = “wrap_content”
 android :text = “@ string / false_button” />
                                                

    </ LinearLayout >

    < 按钮机器人:ID = “@ + ID / next_button”
 机器人:layout_width = “WRAP_CONTENT”
 机器人:layout_height = “WRAP_CONTENT”
 机器人:文本= “@串/ next_button”
 机器人:drawableRight = “@绘制/ ARROW_RIGHT”
 机器人:drawablePadding = “4dp” />
                                                

</ LinearLayout >

最终在模拟器上运行结果如下:

Android学习-第3天