HttpURLConnection authentifizieren Benutzer, android Studio

Question

Ich habe in der Benutzer-Authentifizierung für eine lange Zeit, aber jedes Mal wenn ich betreibe meine app dieser Fehler scheint zu funktionieren:

E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1 
     Process: com.g11.colinaapp, PID: 9752 
     java.lang.RuntimeException: An error occurred while executing doInBackground() 
      at android.os.AsyncTask$3.done(AsyncTask.java:309) 
      at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354) 
      at java.util.concurrent.FutureTask.setException(FutureTask.java:223) 
      at java.util.concurrent.FutureTask.run(FutureTask.java:242) 
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
      at java.lang.Thread.run(Thread.java:818) 
     Caused by: java.lang.SecurityException: Permission Denial: opening provider 
com.android.providers.contacts.ContactsProvider2 from 
ProcessRecord{26a3953 9752:com.g11.colinaapp/u0a72} (pid=9752, 
uid=10072) requires android.permission.READ_CONTACTS or 
android.permission.WRITE_CONTACTS 
     at android.os.Parcel.readException(Parcel.java:1599) 
     at android.os.Parcel.readException(Parcel.java:1552) 
     at android.app.ActivityManagerProxy.getContentProvider(ActivityManagerNative.java:3550) 
     at android.app.ActivityThread.acquireProvider(ActivityThread.java:4778) 
     at android.app.ContextImpl$ApplicationContentResolver.acquireUnstableProvider(ContextImpl.java:2018) 
     at android.content.ContentResolver.acquireUnstableProvider(ContentResolver.java:1468) 
     at android.content.ContentResolver.query(ContentResolver.java:475) 
     at android.content.CursorLoader.loadInBackground(CursorLoader.java:64) 
     at android.content.CursorLoader.loadInBackground(CursorLoader.java:56) 
     at android.content.AsyncTaskLoader.onLoadInBackground(AsyncTaskLoader.java:312) 
     at android.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:69) 
     at android.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:66) 
     at android.os.AsyncTask$2.call(AsyncTask.java:295) 
     at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)  
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)  
     at java.lang.Thread.run(Thread.java:818) 

Hier ist mein Code. Und ich weiß, dass ich HttpClient zu HttpUrlConnection ändern muss, aber ich weiß nicht, wie und ich nach einer langen Zeit auch gesucht habe.

Konnte mir jemand helfen?

Vielen Dank im Voraus

package com.g11.colinaapp; 

import android.animation.Animator; 
import android.animation.AnimatorListenerAdapter; 
import android.annotation.TargetApi; 
import android.app.Activity; 
import android.app.LoaderManager.LoaderCallbacks; 
import android.app.ProgressDialog; 
import android.content.ContentResolver; 
import android.content.Context; 
import android.content.CursorLoader; 
import android.content.Intent; 
import android.content.Loader; 
import android.content.SharedPreferences; 
import android.database.Cursor; 
import android.graphics.Typeface; 
import android.net.Uri; 
import android.os.AsyncTask; 

import android.os.Build; 
import android.os.Bundle; 
import android.provider.ContactsContract; 
import android.support.v7.app.AppCompatActivity; 
import android.text.TextUtils; 
import android.util.Log; 
import android.view.KeyEvent; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.inputmethod.EditorInfo; 
import android.widget.ArrayAdapter; 
import android.widget.AutoCompleteTextView; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.TextView; 

import org.apache.http.HttpEntity; 
import org.apache.http.HttpResponse; 
import org.apache.http.NameValuePair; 
import org.apache.http.StatusLine; 
import org.apache.http.auth.AUTH; 
import org.apache.http.client.HttpClient; 
import org.apache.http.client.entity.UrlEncodedFormEntity; 
import org.apache.http.client.methods.HttpPost; 
import org.apache.http.impl.client.DefaultHttpClient; 
import org.apache.http.message.BasicNameValuePair; 
import org.apache.http.util.EntityUtils; 
import org.json.JSONObject; 

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.InputStreamReader; 
import java.io.OutputStreamWriter; 
import java.io.UnsupportedEncodingException; 
import java.net.MalformedURLException; 
import java.net.URL; 
import java.net.URLConnection; 
import java.net.URLEncoder; 
import java.util.ArrayList; 
import java.util.List; 


import static android.Manifest.permission.READ_CONTACTS; 

public class Login extends AppCompatActivity implements LoaderCallbacks<Cursor> { 

    /** 
    * A dummy authentication store containing known user names and passwords. 
    * TODO: remove after connecting to a real authentication system. 
    */ 
    private static final String[] DUMMY_CREDENTIALS = new String[]{ 
      "foo@example.com:hello", "bar@example.com:world" 
    }; 
    private static final String AUTH_ENDPOINT = "https://colinaapp.com/api/v1/authenticate/"; 
    /** 
    * Keep track of the login task to ensure we can cancel it if requested. 
    */ 
    private UserLoginTask mAuthTask = null; 

    // UI references. 
    private AutoCompleteTextView mEmail; 
    private EditText mPasswordView; 
    private View mProgressView; 
    private View mLoginFormView; 
    public static String userToken = null; 


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

     final EditText etUser = (EditText) findViewById(R.id.email); 
     final EditText etPass = (EditText) findViewById(R.id.password); 
     final TextView tvLog = (TextView) findViewById(R.id.email_sign_in_button); 
     final TextView tvOlvide = (TextView) findViewById(R.id.tvOlvide); 


     //recuperar contraseña 
     tvOlvide.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       Intent olvidoIntent = new Intent(Login.this, Olvide.class); 
       Login.this.startActivity(olvidoIntent); 
      } 
     }); 

     // Set up the login form. 
     mEmail = (AutoCompleteTextView) findViewById(R.id.email); 
     populateAutoComplete(); 

     mPasswordView = (EditText) findViewById(R.id.password); 
     mPasswordView.setOnEditorActionListener(new TextView.OnEditorActionListener() { 
      @Override 
      public boolean onEditorAction(TextView textView, int id, KeyEvent keyEvent) { 
       if (id == R.id.login || id == EditorInfo.IME_NULL) { 
        //attemptLogin(); 
        return true; 
       } 
       return false; 
      } 
     }); 

     TextView mUsernameSignInButton = (TextView) findViewById(R.id.email_sign_in_button); 
     mUsernameSignInButton.setOnClickListener(new OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       attemptLogin(); 
      } 
     }); 

     mLoginFormView = findViewById(R.id.login_form); 
     mProgressView = findViewById(R.id.login_progress); 


    } 

    private void populateAutoComplete() { 
     getLoaderManager().initLoader(0, null, this); 
    } 


    /** 
    * Attempts to sign in or register the account specified by the login form. 
    * If there are form errors (invalid email, missing fields, etc.), the 
    * errors are presented and no actual login attempt is made. 
    */ 
    public void attemptLogin() { 
     if (mAuthTask != null) { 
      return; 
     } 

     // Reset errors. 
     mEmail.setError(null); 
     mPasswordView.setError(null); 

     // Store values at the time of the login attempt. 
     String username = mEmail.getText().toString(); 
     String password = mPasswordView.getText().toString(); 

     boolean cancel = false; 
     View focusView = null; 

     // Check for a valid password, if the user entered one. 
     if (!TextUtils.isEmpty(password) && !isPasswordValid(password)) { 
      mPasswordView.setError(getString(R.string.error_invalid_password)); 
      focusView = mPasswordView; 
      cancel = true; 
     } 

     // Check for a valid email address. 
     if (TextUtils.isEmpty(username)) { 
      mEmail.setError(getString(R.string.error_field_required)); 
      focusView = mEmail; 
      cancel = true; 
     } else if (!isUsernameValid(username)) { 
      mEmail.setError(getString(R.string.error_invalid_email)); 
      focusView = mEmail; 
      cancel = true; 
     } 

     if (cancel) { 
      // There was an error; don't attempt login and focus the first 
      // form field with an error. 
      focusView.requestFocus(); 
     } else { 
      // Show a progress spinner, and kick off a background task to 
      // perform the user login attempt. 
      showProgress(true); 
      mAuthTask = new UserLoginTask(username, password); 
      mAuthTask.execute((String) null); 
     } 
    } 

    private boolean isUsernameValid(String username) { 
     //TODO: Replace this with your own logic 
     return username.length() > 1; 
    } 

    private boolean isPasswordValid(String password) { 
     //TODO: Replace this with your own logic 
     return password.length() > 4; 
    } 

    /** 
    * Shows the progress UI and hides the login form. 
    */ 
    @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2) 
    public void showProgress(final boolean show) { 
     // On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow 
     // for very easy animations. If available, use these APIs to fade-in 
     // the progress spinner. 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) { 
      int shortAnimTime = getResources().getInteger(android.R.integer.config_shortAnimTime); 

      mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE); 
      mLoginFormView.animate().setDuration(shortAnimTime).alpha(
        show ? 0 : 1).setListener(new AnimatorListenerAdapter() { 
       @Override 
       public void onAnimationEnd(Animator animation) { 
        mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE); 
       } 
      }); 

      mProgressView.setVisibility(show ? View.VISIBLE : View.GONE); 
      mProgressView.animate().setDuration(shortAnimTime).alpha(
        show ? 1 : 0).setListener(new AnimatorListenerAdapter() { 
       @Override 
       public void onAnimationEnd(Animator animation) { 
        mProgressView.setVisibility(show ? View.VISIBLE : View.GONE); 
       } 
      }); 
     } else { 
      // The ViewPropertyAnimator APIs are not available, so simply show 
      // and hide the relevant UI components. 
      mProgressView.setVisibility(show ? View.VISIBLE : View.GONE); 
      mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE); 
     } 
    } 

    @Override 
    public Loader<Cursor> onCreateLoader(int i, Bundle bundle) { 
     return new CursorLoader(this, 
       // Retrieve data rows for the device user's 'profile' contact. 
       Uri.withAppendedPath(ContactsContract.Profile.CONTENT_URI, 
         ContactsContract.Contacts.Data.CONTENT_DIRECTORY), ProfileQuery.PROJECTION, 

       // Select only email addresses. 
       ContactsContract.Contacts.Data.MIMETYPE + 
         " = ?", new String[]{ContactsContract.CommonDataKinds.Email 
       .CONTENT_ITEM_TYPE}, 

       // Show primary email addresses first. Note that there won't be 
       // a primary email address if the user hasn't specified one. 
       ContactsContract.Contacts.Data.IS_PRIMARY + " DESC"); 
    } 

    @Override 
    public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) { 
     List<String> emails = new ArrayList<String>(); 
     cursor.moveToFirst(); 
     while (!cursor.isAfterLast()) { 
      emails.add(cursor.getString(ProfileQuery.ADDRESS)); 
      cursor.moveToNext(); 
     } 

     addUsernamesToAutoComplete(emails); 
    } 

    @Override 
    public void onLoaderReset(Loader<Cursor> cursorLoader) { 

    } 

    private interface ProfileQuery { 
     String[] PROJECTION = { 
       ContactsContract.CommonDataKinds.Email.ADDRESS, 
       ContactsContract.CommonDataKinds.Email.IS_PRIMARY, 
     }; 

     int ADDRESS = 0; 
     int IS_PRIMARY = 1; 
    } 


    private void addUsernamesToAutoComplete(List<String> emailCollection) { 
     //Create adapter to tell the AutoCompleteTextView what to show in its dropdown list. 
     ArrayAdapter<String> adapter = 
       new ArrayAdapter<String>(Login.this, 
         android.R.layout.simple_dropdown_item_1line, emailCollection); 

     mEmail.setAdapter(adapter); 
    } 

    /** 
    * Represents an asynchronous login/registration task used to authenticate 
    * the user. 
    */ 
    public class UserLoginTask extends AsyncTask<String, Void, List<NameValuePair>> { 

     private final String mEmail; 
     private final String mPassword; 

     UserLoginTask(String email, String password) { 
      mEmail = email; 
      mPassword = password; 
     } 

     @Override 
     protected List<NameValuePair> doInBackground(String... params) { 
      // TODO: attempt authentication against a network service. 
      List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1); 

      try { 
       nameValuePairs.add(new BasicNameValuePair("email", mEmail)); 
       nameValuePairs.add(new BasicNameValuePair("password", mPassword)); 
      } catch (Exception e) { 
       Log.d("ColinaApp", "Login: " + e.getClass()); 
       Log.d("ColinaApp", "Login: " + e.getMessage()); 
      } 

      String text = ""; 

      // Send data 
      try { 
       // Send POST data request 
       HttpClient httpclient = new DefaultHttpClient(); 
       HttpPost httppost = new HttpPost(AUTH_ENDPOINT); 

       httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 

       try { 
        HttpResponse response = httpclient.execute(httppost); 
        StatusLine sl = response.getStatusLine(); 
        int statusCode = sl.getStatusCode(); 

        if (statusCode == 200) { 
         HttpEntity hp = response.getEntity(); 
         InputStream content = hp.getContent(); 
         BufferedReader reader = new BufferedReader(new InputStreamReader(content)); 

         StringBuilder builder = new StringBuilder(); 

         String line; 
         while ((line = reader.readLine()) != null) { 
          builder.append(line); 
         } 

         String responseBody = builder.toString(); 
         JSONObject jObject = new JSONObject(responseBody); 
         userToken = jObject.getString("token"); 

         Log.d("ColinaApp", "Login: auth successful"); 
         return nameValuePairs; 
        } else { 
         Log.d("ColinaApp", "LoginActivity: error: " + statusCode + " : " + sl.getReasonPhrase()); 
         System.out.println(text); 
         return null; 
        } 

       } catch (UnsupportedEncodingException e) { 
        e.printStackTrace(); 
       } 
      } catch (IOException e) { 
       Log.d("ColinaApp", "Login: " + e.getClass()); 
       Log.d("ColinaApp", "Login: " + e.getMessage()); 
      } catch (Exception ex) { 
       Log.d("ColinaApp", "Login Exception: " + ex.getMessage()); 
       Log.d("ColinaApp", "Login Exception: " + ex.getClass()); 
       ex.printStackTrace(); 
      } 

      Log.d("ColinaApp", "Login: Response: " + text); 

      return null; 
     } 

     @Override 
     protected void onPostExecute(final List<NameValuePair> success) { 
      mAuthTask = null; 
      showProgress(false); 

      if (success != null) { 
       //show the user list 
       Intent m2 = new Intent(Login.this, Inicio.class); 
       m2.putExtra("userToken", userToken); 
       startActivity(m2); 
      } else { 
       Log.d("ColinaApp", "Auth FAILED"); 
       mPasswordView.setError(getString(R.string.error_incorrect_password)); 
       mPasswordView.requestFocus(); 
      } 
     } 

     @Override 
     protected void onCancelled() { 
      mAuthTask = null; 
      showProgress(false); 
     } 
    } 



    public static class Global { 
     public static String Token = userToken; 
    } 
} 

Answer 1

Put Erlaubnis im Manifest und genehmigt es weil es eine gefährliche Erlaubnis ist (diesen Code, um Ihren Fall anpassen):

if (ContextCompat.checkSelfPermission(MainActivity.this, permission) != PackageManager.PERMISSION_GRANTED) { 
      // Should we show an explanation? 
      if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, permission)) { 
       //This is called if user has denied the permission before 
       //In this case I am just asking the permission again 
       ActivityCompat.requestPermissions(MainActivity.this, new String[]{permission}, requestCode); 
      } else { 
       ActivityCompat.requestPermissions(MainActivity.this, new String[]{permission}, requestCode); 
      } 
     } 
     else { 
      System.out.println("" + permission + " is already granted."); 
     }