我使用以下类从网站检索数据:
public class GetMethodEx {
public String getInternetData() throws Exception {
BufferedReader in = null;
String data = null;
try {
HttpClient client = new DefaultHttpClient();
URI website = new URI("http://www.google.com");
HttpGet request = new HttpGet();
request.setURI(website);
HttpResponse response = client.execute(request);
in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String l = "";
String nl = System.getProperty("line.separator");
while ((l = in.readLine()) != null) {
sb.append(l + nl);
}
in.close();
data = sb.toString();
return data;
} finally {
if (in != null) {
try {
in.close();
return data;
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
}
并且下面的类使用上面的类在屏幕上打印检索到的数据:
public class HttpExample extends Activity {
TextView httpStuff;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.httpex);
httpStuff = (TextView) findViewById(R.id.tvHttp);
GetMethodEx test = new GetMethodEx();
String returnedData = null;
try {
returnedData = test.getInternetData();
httpStuff.setText(returnedData);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
我已在“httpex”xml 中将“httpStuff”TextView 设置为“正在加载...”。现在我面临的问题是,当我运行应用程序时,它永远停留在这个“正在加载......”。任何想法为什么?
谢谢。
PS:我在清单中添加了权限“android.permission.INTERNET”。
编辑:实际上我有一个重复的问题,它有正确的解决方案。不管怎样,谢谢!