Does android have a server where users of my app can view what other users post to app?
<p>I am tyring to figure out how to make an app that lets the users of the app post items for sale with pictures where other users that search it can view those items. For example something like craigslist for android.  I want to set up an app where users can fill in edit texts like Category, Title, Price, Description and a Picture of the item they want to post for sale.  How can I achieve this so users can search for items as well.  From what I understand I have to take what a user is inputting for sale and send to a server so others can search it, right?  Can anyone direct in a direction to get started, this is what I have for a user to post an item:</p>

<pre><code>public class Post extends Activity implements OnClickListener {

    ImageButton ibutton1;
    ImageButton ibutton2;
    ImageButton ibutton3;
    ImageButton ibutton4;
    ImageButton ibutton5;
    ImageButton ibutton6;


    Intent i1;
    Intent i2;
    Intent i3;
    Intent i4;
    Intent i5;
    Intent i6;

    final static int cameraData1 = 1;
    final static int cameraData2 = 2;
    final static int cameraData3 = 3;
    final static int cameraData4 = 4;
    final static int cameraData5 = 5;
    final static int cameraData6 = 6;

    Bitmap bmp;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.post);

        Button button = (Button) findViewById(R.id.bNext);
        button.setOnClickListener(mNextListener);

        // Category spinner set up
        Spinner cSpinner = (Spinner) findViewById(R.id.spCategoryPost);
        ArrayAdapter&lt;CharSequence&gt; adapter2 = ArrayAdapter.createFromResource(
                this, R.array.category_array,
                android.R.layout.simple_spinner_item);
        adapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        cSpinner.setAdapter(adapter2);

        cSpinner.setOnItemSelectedListener(new MyOnItemSelectedListener2());
        initialize();
    }

    private void initialize() {
        ibutton1 = (ImageButton) findViewById(R.id.imageButton1);
        ibutton2 = (ImageButton) findViewById(R.id.imageButton2);
        ibutton3 = (ImageButton) findViewById(R.id.imageButton3);
        ibutton4 = (ImageButton) findViewById(R.id.imageButton4);
        ibutton5 = (ImageButton) findViewById(R.id.imageButton5);
        ibutton6 = (ImageButton) findViewById(R.id.imageButton6);
        ibutton1.setOnClickListener(this);
        ibutton2.setOnClickListener(this);
        ibutton3.setOnClickListener(this);
        ibutton4.setOnClickListener(this);
        ibutton5.setOnClickListener(this);
        ibutton6.setOnClickListener(this);
    }

    public void onClick(View Images) {
        switch (Images.getId()) {

        case R.id.imageButton1:
            i1 = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(i1, cameraData1);
            break;
        case R.id.imageButton2:
            i2 = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(i2, cameraData2);
            break;
        case R.id.imageButton3:
            i3 = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(i3, cameraData3);
            break;
        case R.id.imageButton4:
            i4 = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(i4, cameraData4);
            break;
        case R.id.imageButton5:
            i5 = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(i5, cameraData5);
            break;
        case R.id.imageButton6:
            i6 = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(i6, cameraData6);
            break;
        }

    }

    private OnClickListener mNextListener = new OnClickListener() {
        public void onClick(View v) {

            EditText edit = (EditText) findViewById(R.id.etTitle);
            EditText editP = (EditText) findViewById(R.id.etPrice);
            EditText editD = (EditText) findViewById(R.id.etDescription);
            long currentTime = System.currentTimeMillis();
            Calendar cal = Calendar.getInstance();
            cal.setTimeInMillis(currentTime);
            String showTime=String.format("%1$tI:%1$tM:%1$tS %1$Tp",cal);

            Intent intent = new Intent(Post.this, PostSet.class);
            intent.putExtra("com.mandam.isellibuy.TITLE", edit.getText().toString());
            intent.putExtra("com.mandam.isellibuy.PRICE", editP.getText().toString());
            intent.putExtra("com.mandam.isellibuy.DESC", editD.getText().toString());
            intent.putExtra("currentTime", currentTime);
            startActivity(intent);

        }
    };
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode ==  RESULT_OK){
            Bundle extras = data.getExtras();
            bmp = (Bitmap) extras.get("data");
            ibutton1.setImageBitmap(bmp);
        }
    }

}
</code></pre>

<p>Now I take the value of all these edit texts, spinner, and images and return it to another activity where the user can view all of this to make sure it looks good and post the item for sale, here is the activity:</p>

<pre><code>public class PostSet extends Activity {



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.post_set);

        // Setting text of edit text tvTitle from class Post
        TextView tv1 = (TextView) findViewById (R.id.tvTitleText);
        TextView tv2 = (TextView) findViewById (R.id.tvPrice);
        TextView tv3 = (TextView) findViewById (R.id.tvTimeStamp);
        TextView tv4 = (TextView) findViewById (R.id.tvDescription);

        Intent intent = getIntent();
        String edit = intent.getStringExtra("com.mandam.isellibuy.TITLE");
        String editP = intent.getStringExtra("com.mandam.isellibuy.PRICE");
        String editD = intent.getStringExtra("com.mandam.isellibuy.DESC");
        //long currentTime = extras.getLong("currentTime");

        tv1.setText(edit);
        tv2.setText(editP);
        tv4.setText(editD);
        //tv3.setText(currentTime);


    }



}
</code></pre>

<p>Now this Activity just displays all the input from the user to look it over and there is a button "Submit"  that the user clicks to submit the item for sale so others can view the item on my app.  This is where I get confused how do I achieve that?  </p>
