试图从主线程执行任务。这个源代码是这样做的吗？

Question

有几天我一直试图在Android Studio上找出这个多线程的东西。我过去只使用过SwingWorker，在尝试了几种方法让我的https连接启动主线程之后我就把头发拉出来了。我已经尝试了从使用ASyncTask到每次建立连接时启动一个线程的所有内容，但似乎没有任何工作。我的应用每次都会崩溃。最近的尝试如下图所示。

编辑：这不是重复。我已经读过那个帖子，它没有做任何事情来帮助解决这个问题。我正在尝试在主线程之外执行此任务，但我不知道为什么我的代码没有这样做，因为我在run（）中更改为后台线程;甚至在以防万一的情况下开始一个新线程。

public class YelpActivity extends AppCompatActivity implements Runnable{
        private yelpLoader load;

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



    }
    public void run(){
        Thread t = new Thread();
        t.start();
        android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_BACKGROUND);
        YelpAPI test = new YelpAPI();
        test.run();

    }

      public void yelpClick(View v){
          run();

        changeYelpResults(v,"test");


    }


    private void changeYelpResults(View v, String text){

        TextView t = (TextView) findViewById(R.id.ResturauntID);
        t.setText(text);

    }



}

错误日志：

E/AndroidRuntime: FATAL EXCEPTION: main
                  Process: tastr.tastr, PID: 3560
                  java.lang.IllegalStateException: Could not execute method for android:onClick
                      at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293)
                      at android.view.View.performClick(View.java:5198)
                      at android.view.View$PerformClick.run(View.java:21147)
                      at android.os.Handler.handleCallback(Handler.java:739)
                      at android.os.Handler.dispatchMessage(Handler.java:95)
                      at android.os.Looper.loop(Looper.java:148)
                      at android.app.ActivityThread.main(ActivityThread.java:5417)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
                   Caused by: java.lang.reflect.InvocationTargetException
                      at java.lang.reflect.Method.invoke(Native Method)
                      at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
                      at android.view.View.performClick(View.java:5198) 
                      at android.view.View$PerformClick.run(View.java:21147) 
                      at android.os.Handler.handleCallback(Handler.java:739) 
                      at android.os.Handler.dispatchMessage(Handler.java:95) 
                      at android.os.Looper.loop(Looper.java:148) 
                      at android.app.ActivityThread.main(ActivityThread.java:5417) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
                   Caused by: org.scribe.exceptions.OAuthConnectionException: There was a problem while creating a connection to the remote service.
                      at org.scribe.model.Request.send(Request.java:70)
                      at org.scribe.model.Request.send(Request.java:76)
                      at tastr.tastr.YelpAPI.sendRequestAndGetResponse(YelpAPI.java:132)
                      at tastr.tastr.YelpAPI.searchForBusinessesByLocation(YelpAPI.java:89)
                      at tastr.tastr.YelpAPI.queryAPI(YelpAPI.java:146)
                      at tastr.tastr.YelpAPI.run(YelpAPI.java:190)
                      at tastr.tastr.YelpActivity.run(YelpActivity.java:26)
                      at tastr.tastr.YelpActivity.yelpClick(YelpActivity.java:31)
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) 
                      at android.view.View.performClick(View.java:5198) 
                      at android.view.View$PerformClick.run(View.java:21147) 
                      at android.os.Handler.handleCallback(Handler.java:739) 
                      at android.os.Handler.dispatchMessage(Handler.java:95) 
                      at android.os.Looper.loop(Looper.java:148) 
                      at android.app.ActivityThread.main(ActivityThread.java:5417) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
                   Caused by: android.os.NetworkOnMainThreadException
                      at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1273)
                      at java.net.InetAddress.lookupHostByName(InetAddress.java:431)
                      at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
                      at java.net.InetAddress.getAllByName(InetAddress.java:215)
                      at com.android.okhttp.internal.Network$1.resolveInetAddresses(Network.java:29)
                      at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:188)
                      at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:157)
                      at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:100)
                      at com.android.okhttp.internal.http.HttpEngine.createNextConnection(HttpEngine.java:357)
                      at com.android.okhttp.internal.http.HttpEngine.nextConnection(HttpEngine.java:340)
                      at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:330)
                      at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:248)
                      at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:433)
                      at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:114)
                      at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.connect(DelegatingHttpsURLConnection.java:89)
                      at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java)
                      at org.scribe.model.Response.<init>(Response.java:29)
                      at org.scribe.model.Request.doSend(Request.java:117)
                      at org.scribe.model.Request.send(Request.java:66)
                      at org.scribe.model.Request.send(Request.java:76) 
                      at tastr.tastr.YelpAPI.sendRequestAndGetResponse(YelpAPI.java:132) 
                      at tastr.tastr.YelpAPI.searchForBusinessesByLocation(YelpAPI.java:89) 
                      at tastr.tastr.YelpAPI.queryAPI(YelpAPI.java:146) 
                      at tastr.tastr.YelpAPI.run(YelpAPI.java:190) 
                      at tastr.tastr.YelpActivity.run(YelpActivity.java:26) 
                      at tastr.tastr.YelpActivity.yelpClick(YelpActivity.java:31) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) 
                      at android.view.View.performClick(View.java:5198) 
                      at android.view.View$PerformClick.run(View.java:21147) 
                      at android.os.Handler.handleCallback(Handler.java:739) 
                      at android.os.Handler.dispatchMessage(Handler.java:95) 
                      at android.os.Looper.loop(Looper.java:148) 
                      at android.app.ActivityThread.main(ActivityThread.java:5417) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

Answer 1

公共类YelpActivity扩展AppCompatActivity {         private yelpLoader load;

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



} 
public void run(){
        new Thread(new Runnable() {
            @Override
            public void run() {
                YelpAPI test = new YelpAPI();
                test.run();        
            }
        }).start();
    }
  public void yelpClick(View v){
      run();

    changeYelpResults(v,"test");


}


private void changeYelpResults(View v, String text){

    TextView t = (TextView) findViewById(R.id.ResturauntID);
    t.setText(text);

}

}

  

注意：在Activity中实现Runnable不是一个好习惯   类。像我在run方法中使用的那样使用Core Java线程或使用其他   Android背景机制，如AsyncTask / IntentService。