Suche in Android wird nicht funktionieren; App stürzt

Question

Ich versuche, eine Suchoption in meiner App zu implementieren, die Daten aus einer Online-Datenbank erhält. Ich habe okhhtp3.jar und okio.jar in meinem libs-Ordner. Immer wenn ich Text in das Suchfeld eingabe, stürzt die App ab und schließt sich. Dies ist mein Code für die Suche:
`

import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.webkit.URLUtil; 
import android.widget.SearchView; 


import java.io.IOException; 

import okhttp3.MediaType; 
import okhttp3.OkHttpClient; 
import okhttp3.Request; 
import okhttp3.RequestBody; 
import okhttp3.Response; 


`public class Search extends Fragment { 

    private SearchView searchField; 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     View rootView = inflater.inflate(R.layout.search, container, false); 
     this.searchField = (SearchView) rootView.findViewById(R.id.searchView); 


     // perform set on query text listener event 
     this.searchField.setOnQueryTextListener(new SearchView.OnQueryTextListener() { 
      @Override 
      public boolean onQueryTextSubmit(String query) { 
       String url = "https://api.themoviedb.org/3/search/movie?api_key&language=en-US&query="+query+"&page=1&include_adult=false"; 
       //URLUtil.isValidUrl(query); 
       if (URLUtil.isValidUrl(url) == true) { 

        OkHttpClient client = new OkHttpClient(); 

        MediaType mediaType = MediaType.parse("application/octet-stream"); 
        RequestBody body = RequestBody.create(mediaType, "{}"); 
        Request request = new Request.Builder().url(url).get().build(); 

        try { 
         Response response = client.newCall(request).execute(); 
         //System.out.println(response.message()); 
        } catch (IOException e) { 
         e.printStackTrace(); 
        } 

       } 

       System.out.println(query); 
       return false; 
      } 

      @Override 
      public boolean onQueryTextChange(String newText) { 
       // do something when text changes 
       return false; 
      } 
     }); 

     this.searchField.getQuery(); 
     return rootView; 
    } 




} 

Ausnahmen Ich erhalte:

04-15 08:33:18 E/InputEventSender: Exception dispatching finished signal. 
04-15 08:33:18 E/MessageQueue-JNI: Exception in MessageQueue callback: handleReceiveCallback 
04-15 08:33:18 E/MessageQueue-JNI: android.os.NetworkOnMainThreadException 
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1303) 
at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:86) 
at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:74) 
at java.net.InetAddress.getAllByName(InetAddress.java:752) 
at okhttp3.Dns$1.lookup(Dns.java:39) 
at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:170) 
at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.java:136) 
at okhttp3.internal.connection.RouteSelector.next(RouteSelector.java:81) 
at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:171) 
at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:121) 
at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:100) 
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)                     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92) 
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67) 
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93) 
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92) 
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67) 
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)                     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92) 
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:120)                     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92) 
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67) 
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:179) 
at okhttp3.RealCall.execute(RealCall.java:63)                     at Search$1.onQueryTextSubmit(Search.java:46)                     at android.widget.SearchView.onSubmitQuery(SearchView.java:1285)                     at android.widget.SearchView.-wrap8(SearchView.java)                     at android.widget.SearchView$6.onEditorAction(SearchView.java:1262)                     at android.widget.TextView.doKeyDown(TextView.java:6193)                     at android.widget.TextView.onKeyDown(TextView.java:6075)                     at android.widget.AutoCompleteTextView.onKeyDown(AutoCompleteTextView.java:829)                     at android.view.KeyEvent.dispatch(KeyEvent.java:2688)                     at android.view.View.dispatchKeyEvent(View.java:9960)                     at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)                     at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)                     at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)                     at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)                     at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)                     at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)                     at android.support.v4.view.ViewPager.dispatchKeyEvent(ViewPager.java:2761)                     at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)                     at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)                     at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)                     at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)                     at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)                     at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)                     at com.android.internal.policy.DecorView.superDispatchKeyEvent(DecorView.java:405)                     at com.android.internal.policy.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java:1798)                     at android.app.Activity.dispatchKeyEvent(Activity.java:3021)                     at android.support.v7.app.AppCompatActivity.dispatchKeyEvent(AppCompatActivity.java:547)                     at android.support.v7.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59)                     at android.support.v7.app.AppCompatDelegateImplBase$AppCompatWindowCallbackBase.dispatchKeyEvent(AppCompatDelegateImplBase.java:319)                     at android.support.v7.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59) 
at com.a 
04-15 08:33:18 D/AndroidRuntime: Shutting down VM 
04-15 08:33:18 E/AndroidRuntime: FATAL EXCEPTION: main 
Process: PID: 4675 
android.os.NetworkOnMainThreadException 
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1303) 
at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:86) 
at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:74)                     at java.net.InetAddress.getAllByName(InetAddress.java:752)                     at okhttp3.Dns$1.lookup(Dns.java:39) 

ich jede Hilfe dankbar würde!

Answer 1

Ersetzen Sie diese

Response response = client.newCall(request).execute(); 

With an async call.

client.newCall(request).enqueue(new Callback() { 
    // TODO: Learn to implement this correctly 
}); 

Ich habe okhhtp3.jar und okio.jar in meinem libs Ordner

statt JAR-Dateien mit Gradle Versuchen.

compile 'com.squareup.okhttp3:okhttp:(insert latest version)' 

Answer 2

Das sieht (nach dem Stacktrace) wie ein Versuch, ein Netzanruf auf dem Hauptthread zu nennen:

android.os.NetworkOnMainThreadException 

Das heißt, Sie müssen laufen auf, was Netzwerk Artefakte Sie haben ein asynchroner Thread:

//Change String, Void, String with whatever you want it to take as input and return 
private class DownloadTask extends AsyncTask<String, Void, String> { 


    @Override 
    protected void onPreExecute() {} 

    @Override 
    protected String doInBackground(String... urls) { 
     //What you do here: Add your network tasks. 
     return result; 
    } 


    @Override 
    protected void onPostExecute(String result) { 
    } 

}