java - 从互联网获取文本

Question

如果您转到http://www.elven.ee/ip/ - 你可以看到它给出了ip。如果刷新，它会提供不同的端口。

我如何才能将该 IP 导入到 android 中？我不知道如何让它每 5 秒更新一次，但现在我想知道如何将其放入我的手机中。我想将其显示为 TextView :)。

Answer 1

@mopsled 解决方案对我不起作用，所以这是我的:

public class TestActivity extends Activity {

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    TextView tv = (TextView) findViewById(R.id.textView1);
    String ip = "";
    final DefaultHttpClient httpClient = new DefaultHttpClient();
    final HttpGet httpGet = new HttpGet("http://www.elven.ee/ip/");
    try {
        final HttpResponse response = httpClient.execute(httpGet);
        if (response.getStatusLine().getStatusCode() == 200) {
            ip = getString(response);
        }
    } catch (final ClientProtocolException e) {
        e.printStackTrace();
    } catch (final IOException e) {
        e.printStackTrace();
    }
    tv.setText(ip);
}

private static String getString(HttpResponse response) {
    final HttpEntity retEntity = response.getEntity();
    if (retEntity != null) {
        InputStream instream = null;
        try {
            instream = retEntity.getContent();
        } catch (final IllegalStateException ise) {
            ise.printStackTrace();
        } catch (final IOException ioe) {
            ioe.printStackTrace();
        }
        final String result = convertStreamToString(instream);
        return result;
    } else {
        return "";
    }
}

private static String convertStreamToString(final InputStream is) {
    final BufferedReader reader = new BufferedReader(new InputStreamReader(is));
    final StringBuilder sb = new StringBuilder();

    String line = null;
    try {
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
    } catch (final IOException ioe) {
        ioe.printStackTrace();
    } finally {
        try {
            is.close();
        } catch (final IOException ioe) {
            ioe.printStackTrace();
        }
    }
    return sb.toString().trim();
}
}