Merge pull request #520 from Chenweikang2/master

#3 #10 第3次实验

students/net1806081301122/activity_main.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Button"
+        tools:layout_editor_absoluteX="166dp"
+        tools:layout_editor_absoluteY="406dp" />
+    <TextView
+        android:id="@+id/button_open"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:drawableTop="@drawable/logo"
+        android:text="开始游戏"/>
+        >
+    <ImageView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:src="@drawable/logo"/>
+        >
+
+
+</androidx.constraintlayout.widget.ConstraintLayout>