Android Open Source - demo_1019 Main Activity

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License

The source code is released under:

MIT License

Java Source Code

package com.example.demoapp;
//w  w w .j  a  v  a  2 s .c  o m
import java.util.ArrayList;
import java.util.List;

import com.parse.DeleteCallback;
import com.parse.FindCallback;
import com.parse.Parse;
import com.parse.ParseException;
import com.parse.ParseObject;
import com.parse.ParsePush;
import com.parse.ParseQuery;
import com.parse.SaveCallback;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {

  private TextView textView;
  private EditText editText;
  private Button button;
  private ListView listView;
  private ProgressBar progressBar;
  private String nickname;
  private List<ParseObject> messages;

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

    textView = (TextView) findViewById(R.id.textView1);
    editText = (EditText) findViewById(R.id.editText1);
    button = (Button) findViewById(R.id.button1);
    listView = (ListView) findViewById(R.id.listView1);
    progressBar = (ProgressBar) findViewById(R.id.progressBar1);

    button.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View v) {
        String text = nickname + " : " + editText.getText().toString();
        Toast.makeText(MainActivity.this, text, Toast.LENGTH_SHORT)
            .show();

        ParseObject testObject = new ParseObject("Message");
        testObject.put("text", text);
        testObject.saveInBackground(new SaveCallback() {

          @Override
          public void done(ParseException e) {
            loadDataFromParse();
          }
        });

        ParsePush push = new ParsePush();
        push.setChannel("all");
        push.setMessage(text);
        push.sendInBackground();
      }
    });

    nickname = getIntent().getStringExtra("nickname");
    textView.setText(nickname);

    loadDataFromParse();
    listView.setOnItemLongClickListener(new OnItemLongClickListener() {

      @Override
      public boolean onItemLongClick(AdapterView<?> adapter, View view,
          int position, long id) {
        messages.get(position).deleteInBackground(new DeleteCallback() {

          @Override
          public void done(ParseException e) {
            loadDataFromParse();
          }
        });
        return false;
      }
    });

  }

  private void loadDataFromParse() {
    listView.setVisibility(View.INVISIBLE);
    progressBar.setVisibility(View.VISIBLE);

    ParseQuery<ParseObject> query = new ParseQuery<ParseObject>("Message");
    query.orderByDescending("createdAt");
    query.findInBackground(new FindCallback<ParseObject>() {

      @Override
      public void done(List<ParseObject> objects, ParseException e) {
        messages = objects;

        progressBar.setVisibility(View.GONE);
        listView.setVisibility(View.VISIBLE);

        List<String> data = new ArrayList<String>();
        for (ParseObject object : objects) {
          String text = object.getString("text");
          data.add(text);
        }
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(
            MainActivity.this, android.R.layout.simple_list_item_1,
            data);
        listView.setAdapter(adapter);
      }
    });

  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_refresh) {
      loadDataFromParse();
      return true;
    }
    return super.onOptionsItemSelected(item);
  }
}

Java Source Code List

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