hzuapps#90 hzuapps#76 lab4

app/src/main/res/layout/activity_com1314080901239.xml

@@ -1,17 +1,44 @@
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-
-    tools:context=".Com1314080901239Activity" >
+    tools:context=".Com1314080901239Activity" 
+    android:orientation="vertical"
+    >
 
-    <ImageView
-        android:id="@+id/iv"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_centerInParent="true"
-        android:src="@drawable/a" />
+  <ImageView
+      android:layout_width="wrap_content"
+      android:layout_height="200dp"
+      android:src="@drawable/a"
+      android:layout_gravity="center"/>
 
-
+  <LinearLayout
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:orientation="horizontal"
+      android:layout_gravity="center"
+      tools:context=".Com1314080901239Activity" >
 
-</RelativeLayout>
+      <Button
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:text="选图" 
+          />
+
+      <Button
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:text="拍照" />
+
+      <Button
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:text="截图" />
+
+      <Button
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:text="保存" />
+  </LinearLayout>
+
+</LinearLayout>