at that point i does'nt have error !

Hey Abdul! Looks like you have another small error in your code that's preventing you from getting the error that Ben gets in the video:

Exception Caught : java.io.IOException: Illegal character in path at index 65: https://api.forecast.io/forecast/7721c98a5e54fd53839ee2f0cd52b97e /,37.8267,-122.423 at com.squareup.okhttp.Request.uri(Request.java:66)

Basically there's an illegal character in your url at index 65 that is causing this IOException. If you count through up to index 65 or just take a look at what it should look like, you should see that the comma before 37.8267 is the illegal character and should be removed.

hy Kristen Law! Thanks for your reply! But i try it by putting the complete url in a single String variable without cancatination like that: String forecastUrl = "https://api.forecast.io/forecast/42059c9c877227d21ef20c13e94aa4f4/37.8267,-122.423";

And it's again doesn't show the error, which should appears!

package browsetolearn.com.stormy;

import android.app.Activity;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;

import com.squareup.okhttp.Call;
import com.squareup.okhttp.Callback;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;

import java.io.IOException;


public class MainActivity extends Activity {
    public  static final String TAG = MainActivity.class.getSimpleName();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        String forecastUrl = "https://api.forecast.io/forecast/42059c9c877227d21ef20c13e94aa4f4/37.8267,-122.423";

        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(Request request, IOException e) {

            }

            @Override
            public void onResponse(Response response) throws IOException {
                try {
                    if(response.isSuccessful()){
                        Log.v(TAG, response.body().string());
                    }
                } catch (IOException e) {

                    Log.e(TAG, "Exception Caught :", e);
                }
            }
        });

    }
}

My Logcat :

05-05 16:37:08.342 1566-1566/browsetolearn.com.stormy D/dalvikvm﹕ Late-enabling CheckJNI 05-05 16:37:09.234 1566-1566/browsetolearn.com.stormy D/libEGL﹕ loaded /system/lib/egl/libEGL_genymotion.so 05-05 16:37:09.238 1566-1566/browsetolearn.com.stormy D/﹕ HostConnection::get() New Host Connection established 0xb8cbd710, tid 1566 05-05 16:37:09.266 1566-1566/browsetolearn.com.stormy D/libEGL﹕ loaded /system/lib/egl/libGLESv1_CM_genymotion.so 05-05 16:37:09.266 1566-1566/browsetolearn.com.stormy D/libEGL﹕ loaded /system/lib/egl/libGLESv2_genymotion.so 05-05 16:37:09.454 1566-1566/browsetolearn.com.stormy W/EGL_genymotion﹕ eglSurfaceAttrib not implemented 05-05 16:37:09.490 1566-1566/browsetolearn.com.stormy D/OpenGLRenderer﹕ Enabling debug mode 0

yah!i have been added Internet permission, But now it should appears data from Api to my logcat? Data doesn't appears! What's may be be the wrong with my application?

yah! All of these settings are same ...

Kristen! what's i ahve seen in my logcat after taking some modification from next vides after adding alert dialog : AND also itried it with imported project which downloads from Treehouse: My Logcat: 05-06 08:03:03.552 1928-1928/teamtreehouse.com.stormy D/dalvikvm﹕ Late-enabling CheckJNI 05-06 08:03:03.700 1928-1928/teamtreehouse.com.stormy I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted 05-06 08:03:03.700 1928-1928/teamtreehouse.com.stormy W/dalvikvm﹕ VFY: unable to resolve virtual method 11344: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V 05-06 08:03:03.704 1928-1928/teamtreehouse.com.stormy D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0000 05-06 08:03:03.704 1928-1928/teamtreehouse.com.stormy I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll 05-06 08:03:03.704 1928-1928/teamtreehouse.com.stormy W/dalvikvm﹕ VFY: unable to resolve virtual method 11350: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V 05-06 08:03:03.704 1928-1928/teamtreehouse.com.stormy D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0000 05-06 08:03:03.712 1928-1928/teamtreehouse.com.stormy I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled 05-06 08:03:03.712 1928-1928/teamtreehouse.com.stormy W/dalvikvm﹕ VFY: unable to resolve virtual method 9038: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V 05-06 08:03:03.712 1928-1928/teamtreehouse.com.stormy D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x000e 05-06 08:03:03.732 1928-1928/teamtreehouse.com.stormy I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations 05-06 08:03:03.732 1928-1928/teamtreehouse.com.stormy W/dalvikvm﹕ VFY: unable to resolve virtual method 367: Landroid/content/res/TypedArray;.getChangingConfigurations ()I 05-06 08:03:03.736 1928-1928/teamtreehouse.com.stormy D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x0002 05-06 08:03:03.744 1928-1928/teamtreehouse.com.stormy I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType 05-06 08:03:03.744 1928-1928/teamtreehouse.com.stormy W/dalvikvm﹕ VFY: unable to resolve virtual method 389: Landroid/content/res/TypedArray;.getType (I)I 05-06 08:03:03.744 1928-1928/teamtreehouse.com.stormy D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x0002 05-06 08:03:03.796 1928-1928/teamtreehouse.com.stormy D/MainActivity﹕ Main UI code is running! 05-06 08:03:03.864 1928-1928/teamtreehouse.com.stormy D/libEGL﹕ loaded /system/lib/egl/libEGL_genymotion.so 05-06 08:03:03.868 1928-1928/teamtreehouse.com.stormy D/﹕ HostConnection::get() New Host Connection established 0xb8a40618, tid 1928 05-06 08:03:12.856 1928-1928/teamtreehouse.com.stormy D/libEGL﹕ loaded /system/lib/egl/libGLESv1_CM_genymotion.so 05-06 08:03:12.856 1928-1928/teamtreehouse.com.stormy D/libEGL﹕ loaded /system/lib/egl/libGLESv2_genymotion.so 05-06 08:03:34.184 1928-1928/teamtreehouse.com.stormy W/EGL_genymotion﹕ eglSurfaceAttrib not implemented 05-06 08:03:34.348 1928-1928/teamtreehouse.com.stormy D/OpenGLRenderer﹕ Enabling debug mode 0

hy Kristen! But i have find that my error is Broken Pipe, due to this error my data doesn't appears on Logcat, you know how to fix this error?

yah! i have been restarted several time, but it doesn't resolve the error! Antoher point that's comes in my mind, i have been built another applications, nothing any other app seems this like error,but why this app got this error?