Android 网络图片查看器与网页源码查看器

在AndroidManifest.xml里面先添加访问网络的权限：

<uses-permission android:name="android.permission.INTERNET"/>

效果图如下：

下面是主要代码：

 1 package com.hb.neting;
 2 
 3 import java.io.InputStream;
 4 import java.net.HttpURLConnection;
 5 import java.net.URL;
 6 
 7 import android.annotation.SuppressLint;
 8 import android.app.Activity;
 9 import android.graphics.Bitmap;
10 import android.graphics.BitmapFactory;
11 import android.os.Bundle;
12 import android.text.TextUtils;
13 import android.view.View;
14 import android.widget.EditText;
15 import android.widget.ImageView;
16 import android.widget.Toast;
17 
18 public class MainActivity extends Activity {
19     private ImageView iv_show;
20     private EditText et_input;
21     private String path;
22     private int code;
23     private HttpURLConnection conn;
24     @Override
25     protected void onCreate(Bundle savedInstanceState) {
26         super.onCreate(savedInstanceState);
27         setContentView(R.layout.activity_main);
28         iv_show=(ImageView) findViewById(R.id.iv_show);
29         et_input=(EditText) findViewById(R.id.et_inpput);
30     }
31     @SuppressLint("ShowToast") public void chakan(View view){
32         path = et_input.getText().toString().trim();
33         if (TextUtils.isEmpty(path)) {
34             Toast.makeText(MainActivity.this, "不能输入空的", 0).show();
35             return;
36         }
37         new Thread(){
38             public void run() {
39                 try {
40                     URL url = new URL(path);
41                     conn = (HttpURLConnection) url.openConnection();
42                     conn.setRequestMethod("GET");
43                     conn.setConnectTimeout(5000);
44                     code = conn.getResponseCode();
45                     if(code==200){
46                         InputStream in = conn.getInputStream();
47                         //解析图片
48                         final Bitmap stream = BitmapFactory.decodeStream(in);
49                         runOnUiThread(new  Runnable() {
50                             public void run() {
51                                 //更新UI
52                                 iv_show.setImageBitmap(stream);
53                             }
54                         });
55                         in.close();
56                     }
57                 } catch (Exception e) {
58                     e.printStackTrace();
59                 }
60             };
61         }.start();
62     }
63 }

View Code