Android Open Source - DivisionByZero Activity Main Menu

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Back to project page DivisionByZero.

License

The source code is released under:

Apache License

Java Source Code

package com.ggstudios.divisionbyzero;
// w  w  w .  j av a2s.co  m
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.Button;

public class ActivityMainMenu extends BaseActivity {
  public static final float ALPHA_BANNER = 0.2f;
  public static final float ALPHA_TITLE = 0.10f;

  private static final int ANIMATION_DURATION = 300;
  private static final int FADE_TIME = 1000;

  private static final Handler handler = new Handler();

  private RelativeLayout layout;
  private Button btnPlay;
  private Button btnSettings;
  private Button btnAbout;
  private Button btnExit;

  private ImageView imgTitle;
  private ImageView imgBanner;

  private boolean navigatedOut = false;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.main_menu);

    layout = (RelativeLayout) findViewById(R.id.layout);
    btnPlay = (Button) findViewById(R.id.btnPlay);
    btnSettings = (Button) findViewById(R.id.btnSettings);
    btnAbout = (Button) findViewById(R.id.btnAbout);
    btnExit = (Button) findViewById(R.id.btnExit);
    imgTitle = (ImageView) findViewById(R.id.imgTitle);
    imgBanner = (ImageView) findViewById(R.id.imgBanner);

    if(savedInstanceState != null) {
      // resurrecting activity...
      navigatedOut = savedInstanceState.getBoolean("navigatedOut");
    }
  }

  @Override
  public void onSaveInstanceState(Bundle b) {
    super.onSaveInstanceState(b);
    b.putBoolean("navigatedOut", navigatedOut);
  }

  @Override
  public void onResume() {
    super.onResume();
    restoreButtons();
  }

  @Override
  public void onStop() {
    super.onStop();
  }

  private void restoreButtons() {
    if(navigatedOut) {
      navigateIn(null);
    }
  }

  private void fadeInBanner() {
    Animation fadeIn = new AlphaAnimation(ALPHA_BANNER, 1);
    fadeIn.setDuration(FADE_TIME);
    fadeIn.setFillAfter(true);

    Animation fadeIn2 = new AlphaAnimation(ALPHA_TITLE, 1);
    fadeIn2.setDuration(FADE_TIME);
    fadeIn2.setFillAfter(true);

    imgBanner.startAnimation(fadeIn);
    imgTitle.startAnimation(fadeIn2);
  }

  private void fadeOutBanner() {
    Animation fadeOut = new AlphaAnimation(1, ALPHA_BANNER);
    fadeOut.setDuration(FADE_TIME);
    fadeOut.setFillAfter(true);

    Animation fadeOut2 = new AlphaAnimation(1, ALPHA_TITLE);
    fadeOut2.setDuration(FADE_TIME);
    fadeOut2.setFillAfter(true);

    imgBanner.startAnimation(fadeOut);
    imgTitle.startAnimation(fadeOut2);
  }

  private void dismissView(final View v) {
    final float delta = layout.getWidth() - v.getLeft();
    TranslateAnimation animation = new TranslateAnimation(0, delta, 0, 0);
    animation.setDuration(ANIMATION_DURATION);
    animation.setFillAfter(true);
    v.startAnimation(animation);
  }
  
  private void introduceView(final View v) {
    final float delta = layout.getWidth() - v.getLeft();
    TranslateAnimation animation = new TranslateAnimation(delta, 0, 0, 0);
    animation.setDuration(ANIMATION_DURATION);
    animation.setFillAfter(true);
    v.startAnimation(animation);
  }

  private void navigateOut(Runnable onFinish) {
    if(navigatedOut) return; // prevent double tapping...
    
    navigatedOut = true;

    fadeOutBanner();

    dismissView(btnExit);

    final int delta = ANIMATION_DURATION/2;
    int delay = delta;

    handler.postDelayed(new Runnable() {

      @Override
      public void run() {
        dismissView(btnAbout);
      }

    }, delay);
    delay += delta;

    handler.postDelayed(new Runnable() {

      @Override
      public void run() {
        dismissView(btnSettings);
      }

    }, delay);
    delay += delta;

    handler.postDelayed(new Runnable() {

      @Override
      public void run() {
        dismissView(btnPlay);
      }

    }, delay);
    delay += delta;

    handler.postDelayed(onFinish, Math.max(delay, FADE_TIME));
  }
  
  private void navigateIn(Runnable onFinish) {
    navigatedOut = false;

    fadeInBanner();

    introduceView(btnPlay);

    final int delta = ANIMATION_DURATION/2;
    int delay = delta;

    handler.postDelayed(new Runnable() {

      @Override
      public void run() {
        introduceView(btnSettings);
      }

    }, delay);
    delay += delta;

    handler.postDelayed(new Runnable() {

      @Override
      public void run() {
        introduceView(btnAbout);
      }

    }, delay);
    delay += delta;

    handler.postDelayed(new Runnable() {

      @Override
      public void run() {
        introduceView(btnExit);
      }

    }, delay);
    delay += delta;

    if(onFinish != null)
      handler.postDelayed(onFinish, Math.max(delay, FADE_TIME));
  }

  public void onExitClicked(View v) {
    finish();
  }

  public void onSettingsClicked(View v) {
    navigateOut(new Runnable() {

      @Override
      public void run() {
        Intent i = new Intent(ActivityMainMenu.this, ActivitySettings.class);
        startActivity(i);        
      }

    });
  }

  public void onAboutClicked(View v) {
    navigateOut(new Runnable() {

      @Override
      public void run() {
        Intent i = new Intent(ActivityMainMenu.this, ActivityAbout.class);
        startActivity(i);        
      }

    });
  }

  public void onPlayClicked(View v) {
    navigateOut(new Runnable() {

      @Override
      public void run() {
        Intent i = new Intent(ActivityMainMenu.this, ActivityLevelSelection.class);
        startActivity(i);        
      }

    });

    //finish();
  }
}

Java Source Code List

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