网络查看图片

view plain

|<!-- 访问internet权限 --> 

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

view plain

<span style="FONT-WEIGHT: normal">public class MainActivity extends Activity { 

    private EditText imagepath; 

    private ImageView imageView; 

    @Override 

    public void onCreate(Bundle savedInstanceState) { 

        super.onCreate(savedInstanceState); 

        setContentView(R.layout.main); 

         

        imagepath = (EditText) this.findViewById(R.id.imagepath); 

        imageView = (ImageView) this.findViewById(R.id.imageView); 

         

        Button button = (Button) this.findViewById(R.id.button); 

        button.setOnClickListener(new View.OnClickListener() {           

            public void onClick(View v) { 

                String path = imagepath.getText().toString(); 

                try{ 

                    byte[] data = ImageService.getImage(path);//获取图片数据 

                    if(data!=null){ 

                        //构建位图对象 

                        Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length); 

                        imageView.setImageBitmap(bitmap);//显示图片 

                    }else{ 

                        Toast.makeText(getApplicationContext(), R.string.error, 1).show(); 

                    }                    

                }catch (Exception e) { 

                    Toast.makeText(getApplicationContext(), R.string.error, 1).show(); 

                } 

            } 

        }); 

    } 

}</span> 

view plain

<span style="FONT-WEIGHT: normal">public class ImageService { 

    /** 

     * 获取图片 

     * @param path 网络图片路径 

     * @return 图片的字节数据 

     */ 

    public static byte[] getImage(String path) throws Exception{ 

        URL url = new URL(path); 

        HttpURLConnection conn = (HttpURLConnection) url.openConnection(); 

        //设置超时时间 

        conn.setConnectTimeout(5000); 

        conn.setRequestMethod("GET"); 

        if(conn.getResponseCode()==200){ 

            InputStream inStream = conn.getInputStream(); 

            byte[] data = StreamTool.read(inStream); 

            return data; 

        } 

        return null; 

    } 

}</span> 

view plain

<span style="FONT-WEIGHT: normal">public class StreamTool { 

    /** 

     * 读取输入流数据 

     * @param inStream 

     * @return 

     */ 

    public static byte[] read(InputStream inStream) throws Exception{ 

        ByteArrayOutputStream outStream = new ByteArrayOutputStream(); 

        byte[] buffer = new byte[1024]; 

        int len = 0; 

        while( (len = inStream.read(buffer)) != -1 ){ 

            outStream.write(buffer, 0, len); 

        } 

        inStream.close(); 

        return outStream.toByteArray(); 

    } 

}</span> 

网页源码查看器

 

如果网页的源码超过屏幕的显示位置的话，要求出现滚动条.

view plain

<ScrollView 

 android:layout_width="wrap_content"  

 android:layout_height="wrap_content"  

> 

  <TextView   

 android:layout_width="fill_parent"  

 android:layout_height="wrap_content"  

 android:id="@+id/htmlsource" 

 /> 

</ScrollView> 

view plain

  @Override 

  public void onCreate(Bundle savedInstanceState) { 

      super.onCreate(savedInstanceState); 

      setContentView(R.layout.main); 

      pathText = (EditText) this.findViewById(R.id.path); 

      htmlsource = (TextView) this.findViewById(R.id.htmlsource); 

       

      Button button = (Button) this.findViewById(R.id.button); 

      button.setOnClickListener(new View.OnClickListener() { 

     

    public void onClick(View v) { 

        String path = pathText.getText().toString(); 

        try{ 

            //获取源码 

            String html = PageService.getHtml(path); 

            htmlsource.setText(html); 

        }catch (Exception e) { 

            Toast.makeText(getApplicationContext(), R.string.error, 1).show(); 

        } 

    } 

}); 

  } 

view plain

public class PageService { 

    /** 

     * 获取网页源代码 

     * @param path 网页路径 

     * @return 

     */ 

    public static String getHtml(String path) throws Exception{ 

        URL url = new URL(path); 

        HttpURLConnection conn = (HttpURLConnection) url.openConnection(); 

        conn.setConnectTimeout(5000); 

        conn.setRequestMethod("GET"); 

        if(conn.getResponseCode() == 200){ 

            byte[] data = StreamTool.read(conn.getInputStream()); 

            return new String(data, "UTF-8"); 

        } 

        return null; 

    } 

}