How to add share application button from activity to google+ and facebook?
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I am building android application now i already completed, but I want to add Share button in root activity that user can share my application(link to download from google market) to google+ , facebook, twitter and linkin.

How can i do it?

my code:
========

    ImageButton sharingButton = (ImageButton) findViewById(R.id.share);
		sharingButton.setLayoutParams(new ViewGroup.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
		sharingButton.setImageResource(R.drawable.ic_share);

    sharingButton.setOnClickListener(new View.OnClickListener()
    		{
    			public void onClick(View v)
    			{ 
    				shareIt();
    			}
    		});


    private void shareIt()
    {
    	Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
    	sharingIntent.setType("text/plain");
    	String shareBody = "Here is the share content body";
    	sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Subject Here");
    	sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, shareBody);
    	startActivity(Intent.createChooser(sharingIntent, "Share via"));
    }

I tried this but doesn't give me a result. Can you please help me?

regards, 
 