Checkout intent properties like no history , clear back stack etc ... Intent.setFlags 

    Intent mStartActivity = new Intent(HomeActivity.this, SplashScreen.class);
    int mPendingIntentId = 123456;
    PendingIntent mPendingIntent = PendingIntent.getActivity(HomeActivity.this, mPendingIntentId, mStartActivity,
    PendingIntent.FLAG_CANCEL_CURRENT);
    AlarmManager mgr = (AlarmManager) HomeActivity.this.getSystemService(Context.ALARM_SERVICE);
    mgr.set(AlarmManager.RTC, System.currentTimeMillis() + 100, mPendingIntent);
    System.exit(0);

I need to have one column in my database calculated by database as (sum of rows) - (sum of rowsb). I&#39;m using code-first model to create my database.

Here is what I mean:

    public class Income {
          [Key]
          public int UserID { get; set; }
          public double inSum { get; set; }
    }

    public class Outcome {
          [Key]
          public int UserID { get; set; }
          public double outSum { get; set; }
    }

    public class FirstTable {
          [Key]
          public int UserID { get; set; }
          public double Sum { get; set; } 
          // This needs to be calculated by DB as 
          // ( Select sum(inSum) FROM Income WHERE UserID = this.UserID) 
          // - (Select sum(outSum) FROM Outcome WHERE UserID = this.UserID)
    }

How can I achieve this in EF CodeFirst?

Calculated column in EF Code First

How do you download and save an image from a given url in Android?

How to download and save an image in Android

I&#39;m trying to create a &#39;log out&#39; function within my application. Basically, by logging out, the application data should be cleared. What I would like to do is after logging out, the application should restart so that credentials etc. can be entered again. The problem I&#39;m having is that at the point of the user clicking &#39;log-out&#39;, the application already has 3-4 activities running, and I&#39;m not sure how to step back through them. How do I (simulate?) a restart of the app?

How to &#39;restart&#39; an android application programmatically

<p>I'm trying to create a 'log out' function within my application. Basically, by logging out, the application data should be cleared. What I would like to do is after logging out, the application should restart so that credentials etc. can be entered again. The problem I'm having is that at the point of the user clicking 'log-out', the application already has 3-4 activities running, and I'm not sure how to step back through them. How do I (simulate?) a restart of the app?</p>


I have a `FragmentActivity` class with inner class that should display `Dialog`. But I am required to make it `static`. Eclipse offers me to suppress error with `@SuppressLint(&quot;ValidFragment&quot;)`. Is it bad style if I do it and what are the possible consequences?

    public class CarActivity extends FragmentActivity {
    //Code
      @SuppressLint(&quot;ValidFragment&quot;)
      public class NetworkConnectionError extends DialogFragment {
        private String message;
        private AsyncTask task;
        private String taskMessage;
        @Override
        public void setArguments(Bundle args) {
          super.setArguments(args);
          message = args.getString(&quot;message&quot;);
        }
        public void setTask(CarActivity.CarInfo task, String msg) {
          this.task = task;
          this.taskMessage = msg;
        }
        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
          // Use the Builder class for convenient dialog construction
          AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
          builder.setMessage(message).setPositiveButton(&quot;Go back&quot;, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int id) {
              Intent i = new Intent(getActivity().getBaseContext(), MainScreen.class);
              startActivity(i);
            }
          });
          builder.setNegativeButton(&quot;Retry&quot;, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int id) {
              startDownload();
            }
          });
          // Create the AlertDialog object and return it
          return builder.create();
        }
      }

`startDownload()` starts Asynctask.

Fragment inner class should be static

I am using the `IabHelper` utility classes, as recommended by Google&#39;s tutorial, and I&#39;m being hit hard by this error. Apparently `IabHelper` can not run multiple async operations at the same time. I even managed to hit it by trying to start a purchase while the inventory taking was still in progress.

I have already tried to implement `onActivityResult` in my main class as suggested [here][1], but I don&#39;t even get a call to that method before the error hits. Then I found [this][2] but I have no idea where to find this `flagEndAsync` method - it&#39;s not in the `IabHelper` class.

Now I&#39;m looking for a way around this (without reimplementing the whole she-bang). The only solution I can think of is to create a boolean field `asyncActive` that is checked before an async task is started, and not do it if there is another task active. But that has many other problems, and doesn&#39;t work across activities. Also I&#39;d prefer to have an async task queue up and run as soon as it&#39;s allowed to, instead of not running at all.

Any solutions for this issue?

  [1]: https://stackoverflow.com/questions/14130044/android-billing-exception
  [2]: https://stackoverflow.com/questions/15066095/illegalstateexception-in-iab-v3

Android in-app billing: Can&#39;t start async operation because another async operation (is in progress)

I&#39;m building an Android application and I&#39;m trying to build a user management system where users can login, logout, etc. I want to display a login menu item if the user is logged out and a logout button if the user is logged in. How can I do this dynamically? 

This is the layout file right now:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;menu xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;&gt;
      &lt;item android:id=&quot;@+id/add&quot; android:title=&quot;Add&quot; android:icon=&quot;@drawable/ic_menu_add&quot;/&gt;
      &lt;item android:id=&quot;@+id/list&quot; android:title=&quot;List&quot; android:icon=&quot;@drawable/ic_menu_list&quot;/&gt;
      &lt;item android:id=&quot;@+id/refresh&quot; android:title=&quot;Refresh&quot; android:icon=&quot;@drawable/ic_menu_refresh&quot;/&gt;
      &lt;item android:id=&quot;@+id/login&quot; android:title=&quot;Login&quot; android:icon=&quot;@drawable/ic_menu_login&quot;/&gt;
    &lt;/menu&gt;

This is my Java right now:


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
    	new MenuInflater(this).inflate(R.menu.activity_main, menu);
    	return(super.onCreateOptionsMenu(menu));
    }
    
    @Override
    public boolean onOptionsItemSelected(MenuItem item) 
    {
    	System.out.println(item.getItemId()==R.id.add);
    	if (item.getItemId()==R.id.add)
    	{
    		//Cannot add spot unless we have obtained the users current location. 
    		if((currentLat != 0) &amp;&amp; (currentLng != 0))
    		{
    			
    			System.out.println(&quot;loggedin? : &quot;  + auth.isLoggedIn());
    			if(!auth.isLoggedIn())
    			{
    				Toast.makeText(MainActivity.this, &quot;You must be logged in to add a new spot&quot;,
    				        Toast.LENGTH_LONG).show();
    			}
    			else
    			{
    				
    			
    				Intent addIntent = new Intent(MainActivity.this, AddSpot.class);
    				Bundle b = new Bundle();
    				b.putDouble(&quot;currentLat&quot;, currentLat);
    				b.putDouble(&quot;currentLng&quot;, currentLng);
    				addIntent.putExtras(b);
    				startActivity(addIntent);
    				return(true);
    			}
    		}
    	}	
    	else if(item.getItemId()==R.id.list)
    	{
    		//Pointless showing them a blank screen if nothing is retrieved from the server
    		if(list != null)
    		{
    			Intent listIntent = new Intent(MainActivity.this, ListLocations.class);
    			listIntent.putExtra(&quot;list&quot;, list);
    			startActivity(listIntent);
    			return(true);
    		}
    	}
    	
    	if(item.getItemId()==R.id.refresh)
    	{
    		finish();
    		startActivity(getIntent());
    		return(true);		
    	}
    	
    	if(item.getItemId()==R.id.login)
    	{
    		Intent loginIntent = new Intent(MainActivity.this, LoginActivity.class);
    		startActivity(loginIntent);
    		return(true);	
    	}
    
    	return(super.onOptionsItemSelected(item));
    }



How can I dynamically create menu items?

I want to implement ProgressDialog like this one, without additional frame.:
![Pic][1]

 But I&#39;m getting this one. How could I change that?  

![enter image description here][2]

Here is my code for ProgressDialog.
Thanks in advance

   

    private ProgressDialog mProgressDialog;
       ............
       mProgressDialog = new ProgressDialog(activity);
       mProgressDialog.setIndeterminate(false);
       mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
       ............
        public class ProgressTask extends AsyncTask &lt;Fragment,Void,Fragment&gt;{
        		@Override
        		protected void onPreExecute(){
        			mProgressDialog.show();
        		}
        		
        		@Override
        		protected Fragment doInBackground(Fragment... arg0) {	
                        //my stuff is here
        		}
        		
        		@Override
        		protected void onPostExecute(Fragment result) {
                       mProgressDialog.dismiss();
        	   	}
        	}

  [1]: http://i.stack.imgur.com/264Xa.png
  [2]: http://i.stack.imgur.com/B3BnF.png


ProgressDialog spinning circle

I&#39;m getting this error when uploading my Phonegap app to the Google Play Developer Console:

&gt; Your APK&#39;s version code needs to be higher than 2.

How can I fix this?

Content Type	Original Author	Original Content on Stackoverflow
Question	Ryan	View Question on Stackoverflow
Solution 1 - Android	Code_Life	View Answer on Stackoverflow

How to 'restart' an android application programmatically

Android Problem Overview

Android Solutions

Solution 1 - Android

How to download and save an image in Android

Calculated column in EF Code First

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