ActivityNotFoundException - активность была объявлена ​​в файле манифеста

Question

Это место, где показывается ошибка (LoginActivity.java файл)

Intent intent = new Intent(LoginActivity.this, Login.class);  
startActivity(intent); //showing error here 
finish();  

Класс Войти Я пытаюсь позвонить под slideActivity и расширяет android.support.v4.app.Fragment и LoginActivity представляет собой отдельный вид деятельности в рамках отдельной упаковки и распространяется Activity.

Я добавил slideActivity и LoginActivity в файл манифеста android. Но ошибка связана с классом Login.

ошибка показана ниже:

12969-12969/com.client.businesstracker E/AndroidRuntime﹕ FATAL EXCEPTION: main 
android.content.ActivityNotFoundException: Unable to find explicit activity class {com.client.businesstracker/com.client.businesstracker.Login}; have you declared this activity in your AndroidManifest.xml? 
     at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1624) 
     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1423) 
     at android.app.Activity.startActivityForResult(Activity.java:3388) 
     at android.app.Activity.startActivityForResult(Activity.java:3349) 
     at android.app.Activity.startActivity(Activity.java:3584) 
     at android.app.Activity.startActivity(Activity.java:3552) 
     at com.client.businesstracker.activity.LoginActivity$3.onResponse(LoginActivity.java:150) 
     at com.client.businesstracker.activity.LoginActivity$3.onResponse(LoginActivity.java:120) 
     at com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:60) 

вот мой андроид файл манифеста

<activity  
     android:name=".SlideActivity"  
     android:label="@string/app_name" >  
     <intent-filter>  
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 

     </intent-filter>  
    </activity>  
    <activity android:name=".activity.LoginActivity"  
     android:label="@string/app_name" />  


<activity android:name=".activity.RegisterActivity" 
android:label="@string/app_name" />  

Здесь файл Login.java

package com.client.businesstracker; 
import com.client.businesstracker.activity.LoginActivity; 
import com.client.businesstracker.loginandregistration.helper.SQLiteHandler; 
import com.client.businesstracker.loginandregistration.helper.SessionManager; 


public class Login extends android.support.v4.app.Fragment { 

private TextView txtName; 
private TextView txtServerID; 
private TextView txtClientID; 
private Button btnLogout; 

private SQLiteHandler db; 
private SessionManager session; 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    View rootview1 = inflater.inflate(R.layout.activity_main, container, false); 

    txtName = (TextView) rootview1.findViewById(R.id.name); 
    txtServerID = (TextView) rootview1.findViewById(R.id.server_ID); 
    txtClientID = (TextView) rootview1.findViewById(R.id.client_ID); 
    btnLogout = (Button) rootview1.findViewById(R.id.btnLogout); 

    // SqLite database handler 
    db = new SQLiteHandler(getActivity()); 

    // session manager 
    session = new SessionManager(getActivity()); 

    if (!session.isLoggedIn()) { 
     logoutUser(); 
    } 

    // Fetching user details from sqlite 
    HashMap<String, String> user = db.getUserDetails(); 

    String name = user.get("name"); 
    String serverID = user.get("serverID"); 
    String clientID = user.get("clientID"); 

    // Displaying the user details on the screen 
    txtName.setText(name); 
    txtServerID.setText(serverID); 
    txtClientID.setText(clientID); 


    // Logout button click event 
    btnLogout.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      logoutUser(); 
     } 
    }); 
    return rootview1; 
} 

/** 
* Logging out the user. Will set isLoggedIn flag to false in shared 
* preferences Clears the user data from sqlite users table 
* */ 
private void logoutUser() { 
    session.setLogin(false); 

    db.deleteUsers(); 

    // Launching the login activity 
    Intent intent = new Intent(this.getActivity(), LoginActivity.class); 
    startActivity(intent); 
    getActivity().finish(); 
} 

}

И здесь S lideActivity.java файл, откуда я создаю объект из файла Вход в navigationDrawerItem

package com.client.businesstracker; 

import android.app.Activity; 
import android.support.v7.app.AppCompatActivity; 
import android.support.v7.app.ActionBar; 
import android.support.v4.app.Fragment; 
import android.support.v4.app.FragmentManager; 
import android.content.Context; 
import android.os.Build; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.Gravity; 
import android.view.LayoutInflater; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.view.ViewGroup; 
import android.support.v4.widget.DrawerLayout; 
import android.widget.AdapterView; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 
import android.widget.TextView; 

public class SlideActivity extends AppCompatActivity 
    implements NavigationDrawerFragment.NavigationDrawerCallbacks { 

/** 
* Fragment managing the behaviors, interactions and presentation of the navigation drawer. 
*/ 
private NavigationDrawerFragment mNavigationDrawerFragment; 

/** 
* Used to store the last screen title. For use in {@link #restoreActionBar()}. 
*/ 
private CharSequence mTitle; 
//private ListView mDrawerList; 
//private ArrayAdapter<String> mAdapter; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_slide); 
    // mDrawerList = (ListView)findViewById(R.id.left_drawer); 
    // addDrawerItems(); 
    mNavigationDrawerFragment = (NavigationDrawerFragment) 
      getSupportFragmentManager().findFragmentById(R.id.navigation_drawer); 
    mTitle = getTitle(); 

    // Set up the drawer. 
    mNavigationDrawerFragment.setUp(
      R.id.navigation_drawer, 
      (DrawerLayout) findViewById(R.id.drawer_layout)); 
} 

@Override 
public void onNavigationDrawerItemSelected(int position) { 
    // update the main content by replacing fragments 
    Fragment objFragment = null; 
    Log.i("MyActivity", "onNavigationDrawerItemSelected() — get item number " + position); 
    switch (position) 
    { 
     case 0: 
      objFragment = new Login(); 
      break; 
     case 1: 
      objFragment = new Connect(); 
      break; 
     case 2: 
      objFragment = new Home(); 
      break; 
     case 3: 
      objFragment = new Preferences(); 
      break; 
     case 4: 
      objFragment = new AboutUs(); 
      break; 
    } 
    FragmentManager fragmentManager = getSupportFragmentManager(); 
    fragmentManager.beginTransaction() 
      .replace(R.id.container, objFragment) 
      .commit(); 
} 

public void onSectionAttached(int number) { 
    switch (number) { 
     case 0: 
      mTitle = getString(R.string.title_section1); 
      break; 
     case 1: 
      mTitle = getString(R.string.title_section2); 
      break; 
     case 2: 
      mTitle = getString(R.string.title_section3); 
      break; 
     case 3: 
      mTitle = getString(R.string.title_section4); 
      break; 
     case 4: 
      mTitle = getString(R.string.title_section5); 
      break; 
    } 
} 

public void restoreActionBar() { 
    ActionBar actionBar = getSupportActionBar(); 
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD); 
    actionBar.setDisplayShowTitleEnabled(true); 
    actionBar.setTitle(mTitle); 
} 


@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    if (!mNavigationDrawerFragment.isDrawerOpen()) { 
     // Only show items in the action bar relevant to this screen 
     // if the drawer is not showing. Otherwise, let the drawer 
     // decide what to show in the action bar. 
     getMenuInflater().inflate(R.menu.slide, menu); 
     restoreActionBar(); 
     return true; 
    } 
    return super.onCreateOptionsMenu(menu); 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    // Handle action bar item clicks here. The action bar will 
    // automatically handle clicks on the Home/Up button, so long 
    // as you specify a parent activity in AndroidManifest.xml. 
    int id = item.getItemId(); 

    //noinspection SimplifiableIfStatement 
    if (id == R.id.action_settings) { 
     return true; 
    } 

    return super.onOptionsItemSelected(item); 
} 

/** 
* A placeholder fragment containing a simple view. 
*/ 
public static class PlaceholderFragment extends Fragment { 
    /** 
    * The fragment argument representing the section number for this 
    * fragment. 
    */ 
    private static final String ARG_SECTION_NUMBER = "section_number"; 

    /** 
    * Returns a new instance of this fragment for the given section 
    * number. 
    */ 
    public static PlaceholderFragment newInstance(int sectionNumber) { 
     PlaceholderFragment fragment = new PlaceholderFragment(); 
     Bundle args = new Bundle(); 
     args.putInt(ARG_SECTION_NUMBER, sectionNumber); 
     fragment.setArguments(args); 
     return fragment; 
    } 

    public PlaceholderFragment() { 
    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     View rootView = inflater.inflate(R.layout.fragment_slide, container, false); 
     return rootView; 
    } 

    @Override 
    public void onAttach(Activity activity) { 
     super.onAttach(activity); 
     ((SlideActivity) activity).onSectionAttached(
       getArguments().getInt(ARG_SECTION_NUMBER)); 
    } 
} 

}

А вот LoginActivity.java

package com.client.businesstracker.activity; 
import android.app.Activity; 
import android.app.ProgressDialog; 
import android.content.Intent; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.Toast; 

import com.android.volley.Request.Method; 
import com.android.volley.Response; 
import com.android.volley.VolleyError; 
import com.android.volley.toolbox.StringRequest; 

import org.json.JSONException; 
import org.json.JSONObject; 

import java.util.HashMap; 
import java.util.Map; 

import com.client.businesstracker.Login; 
import com.client.businesstracker.R; 
import com.client.businesstracker.loginandregistration.app.AppConfig; 
import com.client.businesstracker.loginandregistration.app.AppController; 
import com.client.businesstracker.loginandregistration.helper.SQLiteHandler; 
import com.client.businesstracker.loginandregistration.helper.SessionManager; 

public class LoginActivity extends Activity { 
private static final String TAG = RegisterActivity.class.getSimpleName(); 
private Button btnLogin; 
private Button btnLinkToRegister; 
private EditText inputServerID; 
private EditText inputClientID; 
private EditText inputPassword; 
private ProgressDialog pDialog; 
private SessionManager session; 
private SQLiteHandler db; 

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

    inputServerID = (EditText) findViewById(R.id.serverID); 
    inputClientID = (EditText) findViewById(R.id.clientID); 
    inputPassword = (EditText) findViewById(R.id.password); 
    btnLogin = (Button) findViewById(R.id.btnLogin); 
    btnLinkToRegister = (Button) findViewById(R.id.btnLinkToRegisterScreen); 

    // Progress dialog 
    pDialog = new ProgressDialog(this); 
    pDialog.setCancelable(false); 

    // SQLite database handler 
    db = new SQLiteHandler(getApplicationContext()); 

    // Session manager 
    session = new SessionManager(getApplicationContext()); 

    // Check if user is already logged in or not 
    if (session.isLoggedIn()) { 
     // User is already logged in. Take him to main activity 
     Intent intent = new Intent(LoginActivity.this, Login.class); 
     startActivity(intent); 
     finish(); 
    } 

    // Login button Click Event 
    btnLogin.setOnClickListener(new View.OnClickListener() { 

     public void onClick(View view) { 
      String serverID = inputServerID.getText().toString().trim(); 
      String clientID = inputClientID.getText().toString().trim(); 
      String password = inputPassword.getText().toString().trim(); 

      // Check for empty data in the form 
      if (!serverID.isEmpty() && !password.isEmpty() && !clientID.isEmpty()) { 
       // login user 
       checkLogin(serverID, clientID,password); 
      } else { 
       // Prompt user to enter credentials 
       Toast.makeText(getApplicationContext(), 
         "Please enter the credentials!", Toast.LENGTH_LONG) 
         .show(); 
      } 
     } 

    }); 

    // Link to Register Screen 
    btnLinkToRegister.setOnClickListener(new View.OnClickListener() { 

     public void onClick(View view) { 
      Intent i = new Intent(getApplicationContext(), 
        RegisterActivity.class); 
      startActivity(i); 
      finish(); 
     } 
    }); 

} 

/** 
* function to verify login details in mysql db 
* */ 
private void checkLogin(final String serverID, final String clientID, final String password) { 
    // Tag used to cancel the request 
    String tag_string_req = "req_login"; 

    pDialog.setMessage("Logging in ..."); 
    showDialog(); 

    StringRequest strReq = new StringRequest(Method.POST, 
      AppConfig.URL_LOGIN, new Response.Listener<String>() { 

     @Override 
     public void onResponse(String response) { 
      Log.d(TAG, "Login Response: " + response.toString()); 
      hideDialog(); 

      try { 
       JSONObject jObj = new JSONObject(response); 
       boolean error = jObj.getBoolean("error"); 

       // Check for error node in json 
       if (!error) { 
        // user successfully logged in 
        // Create login session 
        session.setLogin(true); 

        // Now store the user in SQLite 
        String uid = jObj.getString("uid"); 

        JSONObject user = jObj.getJSONObject("user"); 
        String name = user.getString("name"); 
        String serverID = user.getString("serverID"); 
        String clientID = user.getString("clientID"); 

        // Inserting row in users table 
        db.addUser(name, serverID, clientID); 

        // Launch main activity 
        Intent intent = new Intent(LoginActivity.this, Login.class); 
        startActivity(intent); 
        finish(); 
       } else { 
        // Error in login. Get the error message 
        String errorMsg = jObj.getString("error_msg"); 
        Toast.makeText(getApplicationContext(), 
          errorMsg, Toast.LENGTH_LONG).show(); 
       } 
      } catch (JSONException e) { 
       // JSON error 
       e.printStackTrace(); 
       Toast.makeText(getApplicationContext(), "Json error: " + e.getMessage(), Toast.LENGTH_LONG).show(); 
      } 

     } 
    }, new Response.ErrorListener() { 

     @Override 
     public void onErrorResponse(VolleyError error) { 
      Log.e(TAG, "Login Error: " + error.getMessage()); 
      Toast.makeText(getApplicationContext(), 
        error.getMessage(), Toast.LENGTH_LONG).show(); 
      hideDialog(); 
     } 
    }) { 

     @Override 
     protected Map<String, String> getParams() { 
      // Posting parameters to login url 
      Map<String, String> params = new HashMap<String, String>(); 
      params.put("serverID", serverID); 
      params.put("clientID", clientID); 
      params.put("password", password); 

      return params; 
     } 

    }; 

    // Adding request to request queue 
    AppController.getInstance().addToRequestQueue(strReq, tag_string_req); 
} 

private void showDialog() { 
    if (!pDialog.isShowing()) 
     pDialog.show(); 
} 

private void hideDialog() { 
    if (pDialog.isShowing()) 
     pDialog.dismiss(); 
} 

}

Answer 1

В принципе вы не определили Login.class в Manifest файл.

Вы должны добавить активность пользователей в манифесте, как показано ниже:

<activity android:name=".activity.Login"  
     android:label="@string/app_name" /> 

Надеется, что это поможет.

Answer 2

Проверить исключение первых, прежде чем думать любая вещь еще com.client.businesstracker.Login не в манифесте