How to Get Html from a Url in Android API 16?

Question

I am a newer to Android,this question,I have tried many times, but I can't do it. Pls help!

This is my code:

public class HttpHelper {
private static final int CONNECTION_TIMEOUT = 30000;
private static final int SOCKET_TIMEOUT = 10000;

public static String GET(String uri) {
    HttpParams params = new BasicHttpParams();

    HttpConnectionParams.setConnectionTimeout(params, CONNECTION_TIMEOUT);
    HttpConnectionParams.setSoTimeout(params, SOCKET_TIMEOUT);

    HttpClient httpclient = new DefaultHttpClient(params);
    HttpResponse response;
    String data = "";

    try {
        response = httpclient.execute(new HttpGet(uri));
        StatusLine statusLine = response.getStatusLine();

        if (statusLine.getStatusCode() == HttpStatus.SC_OK) {
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            response.getEntity().writeTo(out);
            out.close();
            data = out.toString();
        } else {
            // Closes the connection.
            response.getEntity().getContent().close();
            throw new IOException(statusLine.getReasonPhrase());
        }
    } 
    catch (ClientProtocolException e)
    {

    } catch (IOException e) 
    {

    }
    return data;
}

}

I Call the Method like this:

TextView jaxrs = (TextView) findViewById(R.id.jaxrs);
String result = HttpHelper.GET("http://www.baidu.com/");
jaxrs.setContentDescription(result);

When I ran this app,it alert "Unfortunately,* has stopped."

Guys,logcat,I cant upload images,So paste this.

01-06 20:35:10.404: E/Trace(1102): error opening trace file: No such file or directory(2)    
01-06 20:35:10.904: D/AndroidRuntime(1102): Shutting down VM    
01-06 20:35:10.914: W/dalvikvm(1102): threadid=1: thread exiting with uncaught exception (group=0x40a13300)    
01-06 20:35:10.924: E/AndroidRuntime(1102): FATAL EXCEPTION: main    
01-06 20:35:10.924: E/AndroidRuntime(1102): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ibelieve.news/com.ibelieve.news.MainActivity}: android.os.NetworkOnMainThreadException
01-06 20:35:10.924: E/AndroidRuntime(1102):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)    
01-06 20:35:10.924: E/AndroidRuntime(1102):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)    
01-06 20:35:10.924: E/AndroidRuntime(1102):     at android.app.ActivityThread.access$600(ActivityThread.java:130)    
01-06 20:35:10.924: E/AndroidRuntime(1102):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)    
01-06 20:35:10.924: E/AndroidRuntime(1102):     at android.os.Handler.dispatchMessage(Handler.java:99)    
01-06 20:35:10.924: E/AndroidRuntime(1102):     at android.os.Looper.loop(Looper.java:137)    
01-06 20:35:10.924: E/AndroidRuntime(1102):     at android.app.ActivityThread.main(ActivityThread.java:4745)

Answer 1

You are doing network activity in that Activity on the Main UI thread. This will raise an exception. To fix it move the network operation (GET request) to it's own Thread or an AsyncTask.