Android实现网络图片查看器和网页源码查看器

网络图片查看器

清单文加入网络访问权限：

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

界面如下：

示例：

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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();
 }
 }
 });
 }
}
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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;
 }
}
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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();
 }
}

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.

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<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>

界面如下：

示例

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@Override
public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
      pathText = (EditText) this.findViewById(R.id.path);
      ht

补充：移动开发 , Android ,