浏览图片

来源：互联网发布：淘宝网怎么样申请换货编辑：程序博客网时间：2024/05/08 03:04

第一步：src\com\example\internetimageview下建立 MainActivity

<span style="font-size:18px;">package com.example.internetimageview;import java.io.IOException;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.text.TextUtils;import android.view.Menu;import android.view.View;import android.widget.EditText;import android.widget.ImageView;import android.widget.Toast;public class MainActivity extends Activity {    private EditText etImageUrl;    private ImageView ivImage;    public static final int SHOWIMAGE=1;    private Handler handler=new Handler(){    public void handleMessage(android.os.Message msg) {    switch (msg.what) {case SHOWIMAGE:Bitmap bitmap=(Bitmap) msg.obj;ivImage.setImageBitmap(bitmap);break;default:break;}    };</span>

第二步：res\layout下建立activity_main

<span style="font-size:18px;"><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"    android:orientation="vertical"    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=".MainActivity" >    <ImageView        android:id="@+id/ivImage"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_gravity="center"        android:layout_weight="1" />    <EditText        android:id="@+id/etImageUrl"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:ems="10"        android:text="http://pic.nipic.com/2007-11-09/2007119121849495_2.jpg"        android:hint="请输入图片的地址" />    <Button        android:id="@+id/btnView"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_gravity="center"        android:background="@drawable/button_bg"        android:onClick="viewImage"        android:text="浏览" /></LinearLayout></span>

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