frhan

	public void setCurrentWithClearTop(Class<?> klass,Bundle b)
	{
		Intent intentToBeNewRoot = new Intent(this, klass);
	    ComponentName cn = intentToBeNewRoot.getComponent();
	    Intent mainIntent = IntentCompat.makeRestartActivityTask(cn);
	    startActivity(mainIntent);
	}

frhan

	public void hideSoftKeyboard()
	{
		InputMethodManager inputManager = (InputMethodManager) 
				getActivity().getSystemService(Context.INPUT_METHOD_SERVICE); 
		View v = getActivity().getCurrentFocus();
		if(v == null)
			return;
		inputManager.hideSoftInputFromWindow(v.getWindowToken(),      
				InputMethodManager.HIDE_NOT_ALWAYS);
	}

frhan

private void setCustomActionbar() 
	{

		actionBar.setLogo(null); // forgot why this one but it helped

		View homeIcon = findViewById(Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB ?
				android.R.id.home : android.support.v7.appcompat.R.id.home);

		((View) homeIcon.getParent()).setVisibility(View.GONE);
		((View) homeIcon).setVisibility(View.GONE);

frhan

Step 1: Remove lock file.
sudo rm /var/lib/mongodb/mongod.lock

Step 2: Repair mongodb.
mongod --repair 

Step 3: start mongodb.
sudo start mongodb 
or
sudo service mongodb start

frhan

Even if you haven't tracked the files so far, git seems to be able to "know" about them even after you add them to .gitignore. 
A quick fix that I've used was to run the following commands from the top folder of your git repo:

(edited)

git rm -r --cached .
Followed by:

git add .
and

frhan

    package com.sel.code;

    import java.util.Set; 
    import android.app.Activity; 
    import android.bluetooth.BluetoothAdapter; 
    import android.bluetooth.BluetoothDevice; 
          import android.content.Intent; 
          import android.os.Bundle; 
          import android.util.Log; 
          import android.view.View; 

frhan

public class OpenPdf extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Button button = (Button) findViewById(R.id.OpenPdfButton);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

frhan

After figuring out which ViewPager methods are called by ViewPager and which are for other purposes, I came up with a solution. I present it here since I see a lot of people have struggled with this and I didn't see any other relevant answers.

First, here's my adapter; hopefully comments within the code are sufficient:

class MainPagerAdapter extends PagerAdapter
{
  // This holds all the currently displayable views, in order from left to right.
  private ArrayList<View> views = new ArrayList<View>();

  //-----------------------------------------------------------------------------