Android Open Source - TVRDecoder Main Activity

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From Project

Back to project page TVRDecoder.

License

The source code is released under:

Apache License

Java Source Code

package se.blunden.tvrdecoder;
//from   w ww .j  a v a2 s.  c  o  m
import java.util.ArrayList;

import se.blunden.tvrdecoder.R;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.LinearLayout;

public class MainActivity extends ActionBarActivity {
  private static final String TAG = "TVRDecoder";
  
  private static String aboutMessage = null;
  private AlertDialog mAboutDialog;
  
  private Decoder decoder;
  private EditText tvrInputField;
  private EditText tsiInputField;
  private ImageButton decodeButton;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    
    prepareAboutDialog();
    
    decoder = new Decoder();
    
        tvrInputField = (EditText) findViewById(R.id.input_tvr);
        tsiInputField = (EditText) findViewById(R.id.input_tsi);

        decodeButton = (ImageButton) findViewById(R.id.button_decode);
        decodeButton.setOnClickListener(new View.OnClickListener() {
                public void onClick(View view) {
                  // Valid input characters enforced by input_tvr and input_tsi
                  String tvr = tvrInputField.getText().toString();
                  String tsi = tsiInputField.getText().toString();
                  
                  Log.d(TAG, "input tvr: " + tvr);
                  Log.d(TAG, "input tsi: " + tsi);
                  
                  ArrayList<String> tvrResult = decoder.decodeTVR(tvr);
                  ArrayList<String> tsiResult = decoder.decodeTSI(tsi);
                  
                  tvrInputField.setText("");
                  tsiInputField.setText("");
                  
                  displayOutput(BulletListBuilder.getBulletList(null, tvrResult), BulletListBuilder.getBulletList(null, tsiResult));
                }
            });
        
  }
  
  private void displayOutput(String tvr, String tsi) {
    // Get a reference to the layout where the card will be displayed
    final LinearLayout layout = (LinearLayout) findViewById(R.id.now_layout);
    
    // Create the View for the card 
    final ResultCardView card = new ResultCardView(this);
    
    // Specify layout parameters to be applied
    LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
    lp.setMargins(0, 20, 0, 0);
    
    card.setTvrHeaderText("TVR Results");
    card.setTsiHeaderText("TSI Results");
    
    card.setTvrText(tvr);
    card.setTsiText(tsi);
    card.setLayoutParams(lp);
    
        // Create a generic swipe-to-dismiss touch listener.
        card.setOnTouchListener(new SwipeDismissTouchListener(
                card,
                null,
                new SwipeDismissTouchListener.DismissCallbacks() {
                    @Override
                    public boolean canDismiss(Object token) {
                        return true;
                    }

                    @Override
                    public void onDismiss(View view, Object token) {
                      Log.d(TAG, "in onDismiss()");
                      layout.removeView(card);
                    }
                }));
        
        layout.addView(card);
  }
  
  private void prepareAboutDialog() {
    if (aboutMessage == null) {
      aboutMessage = getString(R.string.about_message);
    }
    
    mAboutDialog = new AlertDialog.Builder(this)
    .setTitle(R.string.menu_about)
    .setMessage(aboutMessage)
    .setNeutralButton(R.string.ok, new OnClickListener() {
      @Override
      public void onClick(DialogInterface dialog, int which) {
        dialog.dismiss();
      }
    })
    .create();
  }
  
  private void clearAllCards() {
    boolean finished = false;
    while(!finished) {
      ViewGroup group = (ViewGroup) findViewById(R.id.now_layout);
      int count = group.getChildCount();
      int i;
      for (i = 0; i < count; i++) {
        View view = group.getChildAt(i);
            if (view instanceof ResultCardView) {
              group.removeView(view);
              break;
            }
        }
      if(i == count) {
        finished = true;
      }
    }
  }
  
  @Override
  protected void onSaveInstanceState(Bundle outState) {
      super.onSaveInstanceState(outState);
      // Store all formatted card strings to be able to restore on configuration change
      ArrayList<String> savedTvrStrings = new ArrayList<String>();
      ArrayList<String> savedTsiStrings = new ArrayList<String>();
      ViewGroup group = (ViewGroup) findViewById(R.id.now_layout);
      for (int i = 0, count = group.getChildCount(); i < count; ++i) {
          View view = group.getChildAt(i);
          if (view instanceof ResultCardView) {
              savedTvrStrings.add(((ResultCardView)view).getTvrView().getText().toString());
              savedTsiStrings.add(((ResultCardView)view).getTsiView().getText().toString());
          }
      }
      outState.putStringArrayList("savedTvrText", savedTvrStrings);
      outState.putStringArrayList("savedTsiText", savedTsiStrings);
  }
  
  @Override
  protected void onRestoreInstanceState(Bundle savedInstanceState) {
    // Retrieve saved strings
    ArrayList<String> savedTvrStrings = savedInstanceState.getStringArrayList("savedTvrText");
    ArrayList<String> savedTsiStrings = savedInstanceState.getStringArrayList("savedTsiText");
    Log.d(TAG, "restored savedTvrStrings size: " + savedTvrStrings.size());
    Log.d(TAG, "restored savedTsiStrings size: " + savedTsiStrings.size());
    
    // Add the cards back
    if(savedTvrStrings != null && savedTsiStrings != null) {
        for(int i = 0; i < Math.max(savedTvrStrings.size(), savedTsiStrings.size()); i++) {
          displayOutput(savedTvrStrings.get(i), savedTsiStrings.get(i));
        }
      }
    super.onRestoreInstanceState(savedInstanceState);
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu items for use in the action bar
      MenuInflater inflater = getMenuInflater();
      inflater.inflate(R.menu.main_activity_actions, menu);
      
      return super.onCreateOptionsMenu(menu);
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch(item.getItemId()) {
    case R.id.action_about:
      mAboutDialog.show();
      return true;
    
    case R.id.action_clear_all:
      // Remove all the cards
          clearAllCards();
      return true;
    }

    return super.onOptionsItemSelected(item);
  }

}

Java Source Code List

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