Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trialalbara khaled
5,018 PointsGetting the NoClassDefFoundError error!
Please help me to solve this issue, I tried many ways and it didn't work :(
albara khaled
5,018 Pointspackage abdulrahman.com.stormy;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import java.io.IOException;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
public class MainActivity extends AppCompatActivity {
public static final String TAG = MainActivity.class.getSimpleName();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String apiKey = "***";
double latitude = 37;
double longitude = -122;
String forecastUrl = "https://api.forecast.io/forecast/"+apiKey+"/"+latitude+","+longitude;
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(forecastUrl)
.build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException {
try {
Log.v(TAG, response.body().string());
if (response.isSuccessful()) {
}
else {
alertUserAboutError();
}
} catch (IOException e) {
Log.e(TAG, "Exception caught: ", e);
}
}
});
Log.d(TAG, "Main UI code is runing!");
}
private void alertUserAboutError() {
AlertDialogFragment dialog = new AlertDialogFragment();
dialog.show(getFragmentManager(), "error");
}
}
//and this is the class
public class AlertDialogFragment extends DialogFragment {
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
Context context = getActivity();
AlertDialog.Builder builder = new AlertDialog.Builder(context)
.setTitle("Oops!")
.setMessage("Error!")
.setPositiveButton("Sorry!",null);
AlertDialog dialog = builder.create();
return dialog;
}
}
albara khaled
5,018 Pointsnotice that I'v change the variable values String apiKey = "***"; double latitude = 37; double longitude = -122; it's not real.
one friend told me that issue is in the library!
3 Answers
jcorum
71,830 PointsWhen I test your query string: https://api.forecast.io/forecast/***/32,-122
I get a 400 Bad Request. So it looks like your friend may be right.
albara khaled
5,018 Pointssir, please try this link : https://api.forecast.io/forecast/bd0b75bbdd785c256cd8494010199985/37.8267,-122.423
albara khaled
5,018 Points//or
String apiKey = "bd0b75bbdd785c256cd8494010199985";
double latitude = 37.8267;
double longitude = -122.423;
String forecastUrl = "https://api.forecast.io/forecast/"+apiKey+"/"+latitude+","+longitude;
jcorum
71,830 PointsI did, and it works. You can try it too. Just copy it and paste it into the address bar of any browser.
albara khaled
5,018 PointsI know link is working, but AS is not
jcorum
71,830 Pointsjcorum
71,830 PointsCan you be a bit more specific? It's hard to guess at which point in the video you did something that generated the above error. It helps even more if you can paste in the code you were changing when you got the error!