[Android] Gallery一次只滑動一張

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public class ScrollOneImageAtATimeGallery extends Gallery { public ScrollOneImageAtATimeGallery(Context context) { super(context); } public ScrollOneImageAtATimeGallery(Context context, AttributeSet attrs) { super(context, attrs); } public ScrollOneImageAtATimeGallery(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } private boolean isScrollingLeft(MotionEvent e1, MotionEvent e2) { return e2.getX() > e1.getX(); } @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { int kEvent; if (isScrollingLeft(e1, e2)) { // Check if scrolling left kEvent = KeyEvent.KEYCODE_DPAD_LEFT; } else { // Otherwise scrolling right kEvent = KeyEvent.KEYCODE_DPAD_RIGHT; } onKeyDown(kEvent, null); return true; } }