Android Open Source - ddgatve-android Main Activity

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License

The source code is released under:

Apache License

Java Source Code

package lv.ddgatve.math.main;
/*  ww  w.j  a  va2  s . c om*/
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnCancelListener;
import android.content.Intent;
import android.graphics.Color;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.text.Html;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;

public class MainActivity extends ActionBarActivity {

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    TextView textView = (TextView) findViewById(R.id.main_message);
    textView.setTextSize(25f);
    textView.setText(R.string.hello_world);
//    String text = "This is <font color='red'>red</font>. This is <font color='blue'>blue</font>.";
//    textView.setText(Html.fromHtml(text), TextView.BufferType.SPANNABLE);
    
    TextView textDiamondsProgress = (TextView) findViewById(R.id.diamonds_progress);
    textDiamondsProgress.setTextSize(25f);
    textDiamondsProgress.setTextColor(Color.rgb(43, 115, 56));
    textDiamondsProgress.setText("\u2666 \u2666 \u2662 \u2662");
    
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.main_activity_actions, 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_settings) {
    // return true;
    // }
    // return super.onOptionsItemSelected(item);
    int id = item.getItemId();
    if (id == R.id.action_settings) {
      return true;
    }
    if (id == R.id.action_signin) {
      Intent intent = new Intent(this, ExampleActivity.class);
      startActivity(intent);
    }
    if (id == R.id.action_register) {
      Intent intent = new Intent(this, RegisterActivity.class);
      startActivity(intent);
    }
    return super.onOptionsItemSelected(item);
  }
  
  
  public void displayResult(String result) {
    TextView textView = (TextView) findViewById(R.id.main_message);
    textView.setTextSize(30);
    textView.setText(result);
  }
  
  public void getJson(View view) {
    new MyAsyncTask().execute();
  }

  class MyAsyncTask extends AsyncTask<String, String, Void> {

    private ProgressDialog progressDialog = new ProgressDialog(
        MainActivity.this);
    InputStream inputStream = null;
    String result = "";

    protected void onPreExecute() {
      progressDialog.setMessage("Downloading your data...");
      progressDialog.show();
      progressDialog.setOnCancelListener(new OnCancelListener() {
        public void onCancel(DialogInterface arg0) {
          MyAsyncTask.this.cancel(true);
        }
      });
    }

    @Override
    protected Void doInBackground(String... params) {

      String url_select = "http://echo.jsontest.com/a/2/key/value";

      ArrayList<NameValuePair> param = new ArrayList<NameValuePair>();

      try {
        // Set up HTTP post

        // HttpClient is more then less deprecated. Need to change to
        // URLConnection
        HttpClient httpClient = new DefaultHttpClient();

        HttpPost httpPost = new HttpPost(url_select);
        httpPost.setEntity(new UrlEncodedFormEntity(param));
        HttpResponse httpResponse = httpClient.execute(httpPost);
        HttpEntity httpEntity = httpResponse.getEntity();

        // Read content & Log
        inputStream = httpEntity.getContent();
      } catch (UnsupportedEncodingException e1) {
        Log.e("UnsupportedEncodingException", e1.toString());
        e1.printStackTrace();
      } catch (ClientProtocolException e2) {
        Log.e("ClientProtocolException", e2.toString());
        e2.printStackTrace();
      } catch (IllegalStateException e3) {
        Log.e("IllegalStateException", e3.toString());
        e3.printStackTrace();
      } catch (IOException e4) {
        Log.e("IOException", e4.toString());
        e4.printStackTrace();
      }
      // Convert response to string using String Builder
      try {
        BufferedReader bReader = new BufferedReader(
            new InputStreamReader(inputStream, "iso-8859-1"), 8);
        StringBuilder sBuilder = new StringBuilder();

        String line = null;
        while ((line = bReader.readLine()) != null) {
          sBuilder.append(line + "\n");
        }

        inputStream.close();
        result = sBuilder.toString();

      } catch (Exception e) {
        Log.e("StringBuilding & BufferedReader",
            "Error converting result " + e.toString());
      }
      return null;
    }

    protected void onPostExecute(Void v) {
      // parse JSON data
      try {
//        JSONArray jArray = new JSONArray(result);
//        for (int i = 0; i < jArray.length(); i++) {
//
//          JSONObject jObject = jArray.getJSONObject(i);
//
//          String name = jObject.getString("ip");
//          result = name;
////          String tab1_text = jObject.getString("tab1_text");
////          int active = jObject.getInt("active");
//
//        } // End Loop
//        this.progressDialog.dismiss();
        
        JSONObject reader = new JSONObject(result);
        String key  = reader.getString("key");
        this.progressDialog.dismiss();
        result = key;

      } catch (JSONException e) {
        Log.e("JSONException", "Error: " + e.toString());
      } 
      
      
      MainActivity.this.displayResult(result);
    }
  } 
}

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