Android: How to swipe between activities (not fragments), master/detail best set-up

Question

I'm working on an android app and I'm fairly new to all this, including mobile app development, so I have a few questions. Any help would be amazing!

1) Is it possible to swipe between entire activities (including action bar)? And I don't mean like viewPager swapping between fragments, I mean swapping the entire screen (like snapchat does on iOS). Is this possible at all? And if so, how can I do this?

2) What is the best way to implement a master/detail type layout? Like twitter for instance, if i have a listView of the tweets, and when a person clicks on a tweet it takes you to a detailed view of that specific tweet... What would be the best way to accomplish this? Would I have an activity with a list view and create a second activity upon clicking on a tweet? Or would I use fragments instead, one for the list view and one for the detailed view?

3) Is there a way to have different action bars for every fragment?

Thank you so very much!!!

Answer 1

Yes swiping is possible:

OnTouchSwipeListener

import android.content.Context;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;

public class OnSwipeTouchListener implements OnTouchListener {



private final GestureDetector gestureDetector;
private Context context;

/* (non-Javadoc)
 * @see android.view.View.OnTouchListener#onTouch(android.view.View, android.view.MotionEvent)
 */
public boolean onTouch(final View view, final MotionEvent motionEvent) {
    return gestureDetector.onTouchEvent(motionEvent);
}

/**
 * Gets the gesture detector.
 * 
 * @return the gesture detector
 */
public GestureDetector getGestureDetector(){
    return  gestureDetector;
}

/**
 * Instantiates a new on swipe touch listener.
 * 
 * @param context
 *            the context
 */
public OnSwipeTouchListener(Context context) {
    super();
    this.context = context;
    gestureDetector = new GestureDetector(context, new GestureListener());
}

private final class GestureListener extends SimpleOnGestureListener {

    private static final int SWIPE_THRESHOLD = 100;
    private static final int SWIPE_VELOCITY_THRESHOLD = 100;

    /* (non-Javadoc)
     * @see android.view.GestureDetector.SimpleOnGestureListener#onDown(android.view.MotionEvent)
     */
    @Override
    public boolean onDown(MotionEvent e) {
        return true;
    }

    /* (non-Javadoc)
     * @see android.view.GestureDetector.SimpleOnGestureListener#onFling(android.view.MotionEvent, android.view.MotionEvent, float, float)
     */

    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
        boolean result = false;
        try {
            float diffY = e2.getRawY() - e1.getRawY();
            float diffX = e2.getRawX() - e1.getRawX();
            if ((Math.abs(diffX) - Math.abs(diffY)) > SWIPE_THRESHOLD) {
                if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
                    if (diffX > 0) {
                        onSwipeRight();
                    } else {
                        onSwipeLeft();
                    }
                }
            } else {
                if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
                    if (diffY > 0) {
                        onSwipeBottom();
                    } else {
                        onSwipeTop();
                    }
                }
            }
        } catch (Exception e) {

        }
        return result;
    }
}

/**
 * On swipe right.
 */
public void onSwipeRight() {
}

/**
 * On swipe left.
 */
public void onSwipeLeft() {
}

/**
 * On swipe top.
 */
public void onSwipeTop() {
}

/**
 * On swipe bottom.
 */
public void onSwipeBottom() {
}
}

Implementation:

OnSwipeTouchListener onSwipeTouchListener = new OnSwipeTouchListener(Activity.this) {
        @Override
        public void onSwipeLeft() {
            //your actions
        }
    };