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.
<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
@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();
}
}
});
}
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;
}
}
