android网络图片查看器简单实现代码

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:tools="http://schemas.android.com/tools"  android:id="@+id/activity_main"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:paddingBottom="@dimen/activity_vertical_margin"  android:paddingLeft="@dimen/activity_horizontal_margin"  android:paddingRight="@dimen/activity_horizontal_margin"  android:paddingTop="@dimen/activity_vertical_margin"  tools:context="com.itheima74.internetpicturelook.MainActivity">  <EditText    android:id="@+id/et_url"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:layout_alignParentLeft="true"    android:layout_alignParentStart="true"    android:layout_alignParentTop="true"    android:hint="请输入图片网址"    android:inputType="textUri"    android:text="http://b.hiphotos.baidu.com/image/pic/item/d009b3de9c82d15825ffd75c840a19d8bd3e42da.jpg" />  <Button    android:id="@+id/bt_look"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:layout_below="@+id/et_url"    android:text="查看图片" />  <ScrollView    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_below="@+id/bt_look"    android:layout_centerHorizontal="true">    <ImageView      android:id="@+id/iv"      android:layout_width="wrap_content"      android:layout_height="wrap_content" />  </ScrollView></RelativeLayout>