如何使用Facebook帳戶登錄後進入nextactivity

Question

我做過登錄使用Facebook帳戶，通過導入Facebook sdk作爲庫在我的Android應用程序，但主要問題是我想要去另一個活動，當我用Facebook帳戶登錄我我不瞭解如何做到這一點。

LoginActivity.java：

public class LoginActivity extends FragmentActivity { 




private ProgressDialog pDialog; 

Button btn_login,bnt_Register ; 
EditText edt_email,edt_password; 

JSONParser jsonParser = new JSONParser(); 



private static String url_create_product = "http://192.168.1.6/laravel/public/user"; 


private static final String TAG_SUCCESS = "success"; 
//private static final String TAG_PORTFOLIOS = "lists"; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    super.onCreate(savedInstanceState); 

    setContentView(R.layout.activity_login); 

    bnt_Register=(Button)findViewById(R.id.btnRegister); 
    btn_login =(Button)findViewById(R.id.btnLogin); 
    edt_email = (EditText)findViewById(R.id.loginEmail); 
    edt_password=(EditText)findViewById(R.id.loginPassword); 


    bnt_Register.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      // TODO Auto-generated method stub 
      Intent in = new Intent(LoginActivity.this,AccountRegister.class); 
      startActivity(in); 



     } 


    }); 



    btn_login.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      // TODO Auto-generated method stub 
      new EmailPassword().execute(); 



     } 
    }); 





} 



class EmailPassword extends AsyncTask<String, String, String> { 



    @Override 
    protected void onPreExecute() { 
     // TODO Auto-generated method stub 
     super.onPreExecute(); 

     pDialog = new ProgressDialog(LoginActivity.this); 
     pDialog.setMessage("login..."); 
     pDialog.setIndeterminate(false); 
     pDialog.setCancelable(true); 
     pDialog.show(); 


    } 

    @Override 
    protected String doInBackground(String... params) { 

// TODO Auto-generated method stub 
    String email =edt_email.getText().toString(); 
    String password =edt_password.getText().toString(); 


    List<NameValuePair> params1 = new ArrayList<NameValuePair>(); 
    params1.add(new BasicNameValuePair("email", email)); 
    params1.add(new BasicNameValuePair("password", password)); 

    try{ 
    JSONObject json = jsonParser.makeHttpRequest(url_create_product, 
       "POST", params1); 


    Log.d("Create Response", json.toString()); 

    return json.toString(); 
    }catch(Exception e){} 



     return null; 
    } 


    protected void onPostExecute(String file_url) { 
     // dismiss the dialog once done 
     pDialog.dismiss(); 
     try { 
      JSONObject json = new JSONObject(file_url); 
      int success = json.getInt(TAG_SUCCESS); 

      if (success == 1) { 
       // successfully created product 
       Intent i = new Intent(getApplicationContext(), AllProductsActivity.class); 
       startActivity(i); 


       //Toast.makeText(getApplicationContext(),"Login", Toast.LENGTH_LONG).show(); 

       // closing this screen 
       //finish(); 
      } else { 
       // failed to create product 
      } 
     } catch (JSONException e) { 
      e.printStackTrace(); 
     } 
    } 


    } 


@Override 
protected void onResume() { 
    super.onResume(); 

    // Logs 'install' and 'app activate' App Events. 
    AppEventsLogger.activateApp(this); 
} 
@Override 


protected void onPause() { 
    super.onPause(); 

    // Logs 'app deactivate' App Event. 
    AppEventsLogger.deactivateApp(this); 
} 


} 

Answer 1

你應該做的是，在onPostExecute方法。爲響應設置一個標誌，例如，如果登錄成功，則將boolean設置爲true，並在​​的onPostExecute方法中啓動其他活動。

Answer 2

更改後執行的方法：

protected void onPostExecute(String file_url) { 
    // dismiss the dialog once done 
    pDialog.dismiss(); 
    Intent in = new Intent(LoginActivity.this,YourActivity.class); 
    startActivity(in); 
}