我的应用程序在模拟器上运行得很好，但当它在真正的安卓手机上（索尼爱立信xperia、索尼爱立信experia mini）时，它无法连接到互联网。手机可使用EDGE/GPRS进行主动互联网连接。
这是课程：
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.DefaultHttpClient;
public class get_string {
public String response_p (String url)
{
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet(url.toString());
ResponseHandler<String> responseHandler = new BasicResponseHandler();
String response_str = null;
try {
response_str = client.execute(request, responseHandler);
} catch (ClientProtocolException e) {
response_str="NOT";
} catch (IOException e) {
response_str="NOT";
}
return response_str;
}
public String response (String str)
{
String res="";
try {
URL url = new URL(str);
HttpURLConnection con = (HttpURLConnection) url
.openConnection();
res=readStream(con.getInputStream());
} catch (Exception e) {
res="NOT";
}
return res;
}
private String readStream(InputStream in) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
String line = "",res="";
while ((line = reader.readLine()) != null) {
res+=line;
}
return res;
}
}
response()和response_p()的结果相同。
这是清单文件：
</application>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
</manifest>
我该如何解决这个问题？
我将response（）和response_p（）都移到了我的默认活动类中，它成功了！我仍然不知道为什么，但这两个功能在模拟器和真实的手机中都能完美地工作。