Android Open Source - android-weather-demo-application Base Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

package org.openweathermap.activity.base;
/* www.  j a v a2  s  .co m*/
import org.openweathermap.fragment.ModalDialogFragment;

import android.R.color;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.widget.DrawerLayout;
import android.view.View;
import android.view.animation.TranslateAnimation;
import android.widget.FrameLayout;

import com.ink.weather.R;

/**
 * Inheriting from BaseActivity provides an Activity with a NavigationDrawer 
 * implementation. super.useNavigationDrawer() must be called during onCreate() 
 * to setup the NavigationDrawer. Helper methods for opening and closing the
 * DialogActivity are exposed to remove the dialog management responsibility from Activity
 * @author samkirton
 */
public abstract class BaseActivity extends FragmentActivity {
  private ModalDialogFragment uiModalDialogFragment;
  
  private ActionBarDrawerToggle mDrawerToggle;
  private float mLastTranslate;
  private boolean mDialogOpen;
  
  /**
   * Setup the navigation drawer and hook the onNavigationDrawerClosed 
   * abstract method to the onDraweClosed callback, this allows the activities
   * that use BaseActivity to be notified when the navigation drawer closes.
   */
    protected void useNavigationDrawer() {
    final DrawerLayout uiDrawerLayout = getNavigationDrawer();
    
    if (uiDrawerLayout != null) {
      uiDrawerLayout.setScrimColor(color.transparent);
      mDrawerToggle = new ActionBarDrawerToggle(
          this, 
          uiDrawerLayout, 
          R.drawable.ic_launcher, 
          R.string.app_name, 
          R.string.app_name) {
        
        public void onDrawerClosed(View drawerView) { }
        
        public void onDrawerOpened(View drawerView) { }
        
        public void onDrawerSlide(View drawerView, float slideOffset) {
          slideActivityContent(drawerView,slideOffset);
        }
      };
      
      uiDrawerLayout.setDrawerListener(mDrawerToggle);
    }
  }
    
  /**
   * Adjust the activity content when the navigation drawer opens. The native
   * implementation of the navigation drawer will cover the activity content 
   * when it is opened
   */
  private void slideActivityContent(View drawerView, float slideOffset) {
    float moveFactor = (getNavigationContentLayout().getWidth() * slideOffset);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
      getContentLayout().setTranslationX(moveFactor);
    } else {
      TranslateAnimation translateAnimation = new TranslateAnimation(mLastTranslate, moveFactor, 0.0f, 0.0f);
      translateAnimation.setDuration(0);
      translateAnimation.setFillAfter(true);
      getContentLayout().startAnimation(translateAnimation);
      
      mLastTranslate = moveFactor;
    }
  }
  
  /**
   * Close the loading dialog
   */
  protected void closeDialog() {
    if (uiModalDialogFragment != null) {
      mDialogOpen = false;
      uiModalDialogFragment.dismiss();
    }
  }
  
  /**
   * Open the loading dialog and display the loadingText
   */
  protected void showDialog(String dialogText, int buttonType) {
    // Close the existing dialog before opening another one
    if (mDialogOpen) 
      closeDialog();
    
    // Open the fragment dialog with the provided extras
    Bundle args = new Bundle();
    args.putString(ModalDialogFragment.EXTRA_DIALOG_TEXT, dialogText);
    args.putInt(ModalDialogFragment.EXTRA_BUTTON_TYPE, buttonType);

    mDialogOpen = true;
    uiModalDialogFragment = new ModalDialogFragment();
    uiModalDialogFragment.setArguments(args);
    uiModalDialogFragment.show(getSupportFragmentManager(), "dialog");
  }
  
  /**
   * @return The content of the activity that should be moved when the navigation
   * drawer is opened
   */
  protected abstract View getContentLayout();
  
  /**
   * @return The navigation drawer fragment
   */
  protected abstract FrameLayout getNavigationContentLayout();
  
  /**
   * @return A reference to the DrawerLayout ui component
   */
  protected abstract DrawerLayout getNavigationDrawer();
}

Java Source Code List

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