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POleft/right and up/down swiping navigation
 

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  1. POleft/right and up/down swiping navigation
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    <p>I am considering creating an Android app as part of a wider art project, and having no experience in Android development need to check if something is possible/feasible.</p> <p>It requires a very simple interface, navigating between several (15 - 20) pages containing images or text. The navigation needs to be left/right and up/down swiping.</p> <p>I have achieved a proof of concept (via copy/paste code from previous questions on the subject) in a very simple app using PagerAdapter/OnClickListener but this only does left/right switching.</p> <p>Is there a way of using this for up/down navigation between pages? Any help/advice would be greatly appreciated,</p> <pre><code>import android.content.Context; import android.content.Intent; import android.os.Parcelable; import android.support.v4.view.PagerAdapter; import android.support.v4.view.ViewPager; import android.view.View; import android.widget.Button; import android.widget.LinearLayout; import android.widget.TextView; public class MyPagerAdapter extends PagerAdapter { public int getCount() { return 5; } @Override public Object instantiateItem(View container, int position) { Context context = container.getContext(); LinearLayout layout = new LinearLayout(context); TextView textItem = new TextView(context); Button buttonItem = new Button(context); buttonItem.setText("Aceptar"); buttonItem.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent("com.phone"); } }); switch (position) { case 0: textItem.setText("Photo 1 - begining"); break; case 1: textItem.setText("Photo 2"); break; case 2: textItem.setText("Photo 3"); break; case 3: textItem.setText("Photo 4"); break; case 4: textItem.setText("Photo 5 - end"); break; } layout.addView(textItem); ((ViewPager) container).addView(layout, 0); return layout; } @Override public void destroyItem(View arg0, int arg1, Object arg2) { ((ViewPager) arg0).removeView((View) arg2); } @Override public boolean isViewFromObject(View arg0, Object arg1) { return arg0 == ((View) arg1); } @Override public Parcelable saveState() { return null; } } </code></pre> <p>Here is the new code giving error </p> <blockquote> <p>The method onTouch(View, MotionEvent) is undefined for the type Object</p> </blockquote> <pre><code>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 = new GestureDetector(new GestureListener()); public boolean onTouch(final View view, final MotionEvent motionEvent) { super.onTouch(view, motionEvent); return gestureDetector.onTouchEvent(motionEvent); } private final class GestureListener extends SimpleOnGestureListener { private static final int SWIPE_THRESHOLD = 100; private static final int SWIPE_VELOCITY_THRESHOLD = 100; @Override public boolean onDown(MotionEvent e) { return true; } @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { boolean result = false; try { float diffY = e2.getY() - e1.getY(); float diffX = e2.getX() - e1.getX(); if (Math.abs(diffX) &gt; Math.abs(diffY)) { if (Math.abs(diffX) &gt; SWIPE_THRESHOLD &amp;&amp; Math.abs(velocityX) &gt; SWIPE_VELOCITY_THRESHOLD) { if (diffX &gt; 0) { onSwipeRight(); } else { onSwipeLeft(); } } } else { if (Math.abs(diffY) &gt; SWIPE_THRESHOLD &amp;&amp; Math.abs(velocityY) &gt; SWIPE_VELOCITY_THRESHOLD) { if (diffY &gt; 0) { onSwipeBottom(); } else { onSwipeTop(); } } } } catch (Exception exception) { exception.printStackTrace(); } return result; } } public void onSwipeRight() { } public void onSwipeLeft() { } public void onSwipeTop() { } public void onSwipeBottom() { } } </code></pre>
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    1. COPls check this http://stackoverflow.com/questions/4139288/android-how-to-handle-right-to-left-swipe-gestures and http://stackoverflow.com/questions/12970249/android-swipe-left-or-right-to-slide-views
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    2. COPls check this http://stackoverflow.com/questions/937313/android-basic-gesture-detection and http://stackoverflow.com/questions/12970249/android-swipe-left-or-right-to-slide-views
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    3. CO@pragnesh-soni Thanks, after following http://stackoverflow.com/questions/4139288/android-how-to-handle-right-to-left-swipe-gestures I am left with the error "The method onTouch(View, MotionEvent) is undefined for the type Object", on the line super.onTouch(view , motionEvent ); --- I cannot remove this,
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