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POAndroid ViewFlipper not flipping
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  1. POAndroid ViewFlipper not flipping
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    copied!<p>I have a ViewFlipper which should react to a fling gesture, but it does not.</p> <p>Activity</p> <pre><code>@Override public void onCreate(Bundle savedInstanceState) { ... listView = this.getListView(); detector = new GestureDetector(this, new FlingGestureListener(listView)); ... } </code></pre> <p>FlingGestureListener</p> <pre><code>public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { int pos = source.pointToPosition(Math.round(e1.getX()), Math.round(e1.getY())); View v = source.getChildAt(pos - source.getFirstVisiblePosition()); System.out.println("fling: x=" + velocityX + " y=" + velocityY); try { IFlingable flingable = (IFlingable) v; if(velocityY &gt; -200 &amp;&amp; velocityY &lt; 200) { if(velocityX &lt; 0) flingable.fling(IFlingable.RIGHT_TO_LEFT); else if(velocityX &gt; 0) flingable.fling(IFlingable.LEFT_TO_RIGHT); } } catch(Exception e) {} return false; } </code></pre> <p>View with ViewFlipper which implements IFlingable</p> <pre><code>public void fling(int direction) { System.out.println("flip: " + direction); switch(direction) { case IFlingable.LEFT_TO_RIGHT: System.out.println("piep"); GUIHelper.setAnimationSlideLeftToRight(context, switcher); switcher.showNext(); break; case IFlingable.RIGHT_TO_LEFT: System.out.println("pup"); GUIHelper.setAnimationSlideRightToLeft(context, switcher); switcher.showPrevious(); break; } } </code></pre> <p>Layout</p> <pre><code>&lt;ViewFlipper android:id="@+id/viewSwitcher" android:layout_height="wrap_content" android:layout_width="match_parent" android:layout_weight="1" android:inAnimation="@anim/slide_in_left" android:outAnimation="@anim/slide_out_right"&gt; &lt;LinearLayout android:layout_height="wrap_content" android:layout_width="match_parent" android:orientation="vertical"&gt; ... &lt;/LinearLayout&gt; ... &lt;/ViewFlipper&gt; </code></pre> <p>Log</p> <pre><code>fling: x=2542.3613 y=95.877945 flip: 0 piep </code></pre> <p>I get the right log messages so the showNext() on the ViewFlipper gets executed but it does not change its view on the gui. Am I missing something? I have another layout with a ViewSwitcher instead of the Flipper and that one works.</p> <p>EDIT:</p> <p>Here are the missing classes:</p> <pre><code>public class GUIHelper { ... public static void setAnimationSlideLeftToRight(Context context, ViewAnimator switcher) { Animation in = AnimationUtils.loadAnimation(context, R.anim.slide_in_left); Animation out = AnimationUtils.loadAnimation(context, R.anim.slide_out_right); switcher.setInAnimation(in); switcher.setOutAnimation(out); } public static void setAnimationSlideRightToLeft(Context context, ViewAnimator switcher) { Animation in = AnimationUtils.loadAnimation(context, R.anim.slide_in_right); Animation out = AnimationUtils.loadAnimation(context, R.anim.slide_out_left); switcher.setInAnimation(in); switcher.setOutAnimation(out); } ... } public interface IFlingable { public static final int LEFT_TO_RIGHT = 0; public static final int RIGHT_TO_LEFT = 1; public void fling(int direction, boolean fling); } </code></pre>
 

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