Android 禁用ViewPager滚动动画
从代码中,我有一个设置适配器的ViewPager。有没有办法禁用滚动动画,使其在我滑动时“跳转”到新页面?我不想禁用Android 禁用ViewPager滚动动画,android,animation,scroll,android-viewpager,native,Android,Animation,Scroll,Android Viewpager,Native,从代码中,我有一个设置适配器的ViewPager。有没有办法禁用滚动动画,使其在我滑动时“跳转”到新页面?我不想禁用onTouchEvent和oninterceptouchevent中的整个滚动功能,只想禁用滑动动画 mSectionsPagerAdapter = new SectionsPagerAdapter(getFragmentManager()); // Set up the ViewPager with the sections adapter. mViewPager = (Cus
onTouchEvent
和oninterceptouchevent
中的整个滚动功能,只想禁用滑动动画
mSectionsPagerAdapter = new SectionsPagerAdapter(getFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (CustomViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
我不知道是否有一个干净的解决方案。但是您可以使用一个技巧,用另一个转换器撤消标准页面转换器。
NoPageTransformer
如下所示:
private static class NoPageTransformer implements ViewPager.PageTransformer {
public void transformPage(View view, float position) {
if (position < 0) {
view.setScrollX((int)((float)(view.getWidth()) * position));
} else if (position > 0) {
view.setScrollX(-(int) ((float) (view.getWidth()) * -position));
} else {
view.setScrollX(0);
}
}
}
将在SDK版本16及以上版本中工作。Kotlin:
viewpager.setPageTransformer(false, FadePageTransformer())
inner class FadePageTransformer : ViewPager.PageTransformer {
override fun transformPage(view: View, position: Float) {
view.translationX = view.width * -position
if (position <= -1.0f || position >= 1.0f) {
view.alpha = 0.0f
view.setVisibility(View.GONE);
} else if (position == 0.0f) {
view.alpha = 1.0f
view.setVisibility(View.VISIBLE);
} else {
// position is between -1.0F & 0.0F OR 0.0F & 1.0F
view.alpha = 1.0f - Math.abs(position)
view.setVisibility(View.GONE);
}
}
}
viewpager.setPageTransformer(false,FadePageTransformer())
内部类FadePagetTransformer:ViewPager.PageTransformer{
覆盖页面(视图:视图,位置:浮动){
view.translationX=view.width*-位置
如果(位置=1.0f){
view.alpha=0.0f
view.setVisibility(view.GONE);
}否则如果(位置==0.0f){
view.alpha=1.0f
view.setVisibility(view.VISIBLE);
}否则{
//位置介于-1.0F和0.0F或0.0F和1.0F之间
view.alpha=1.0f-数学abs(位置)
view.setVisibility(view.GONE);
}
}
}
接受的答案仍然有一个滑动动画
我正在搜索禁用滑动动画,甚至由用户滑动
这是我的实现
1-覆盖Viewpager
方法onInterceptTouchEvent
和onTouchEvent
2-创建自己的手势检测器
3-检测刷卡手势并使用setCurrentItem(item,false)
ViewPager
public class ViewPagerNoSwipe extends ViewPager {
private final GestureDetector gestureDetector;
private OnSwipeListener mOnSwipeListener;
public void setOnSwipeListener(OnSwipeListener onSwipeListener) {
mOnSwipeListener = onSwipeListener;
}
public ViewPagerNoSwipe(@NonNull Context context) {
super(context);
gestureDetector = new GestureDetector(context, new GestureListener());
}
public ViewPagerNoSwipe(@NonNull Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
gestureDetector = new GestureDetector(context, new GestureListener());
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
return true;
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
gestureDetector.onTouchEvent(ev);
return false;
}
public class GestureListener extends GestureDetector.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) > Math.abs(diffY)) {
if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
if (diffX > 0) {
if(mOnSwipeListener!=null)
mOnSwipeListener.onSwipeRight();
} else {
if(mOnSwipeListener!=null)
mOnSwipeListener.onSwipeLeft();
}
result = true;
}
} else if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
if (diffY > 0) {
if(mOnSwipeListener!=null)
mOnSwipeListener.onSwipeBottom();
} else {
if(mOnSwipeListener!=null)
mOnSwipeListener.onSwipeTop();
}
result = true;
}
} catch (Exception exception) {
exception.printStackTrace();
}
return result;
}
}
public interface OnSwipeListener {
void onSwipeRight();
void onSwipeLeft();
void onSwipeTop();
void onSwipeBottom();
}
}
设置ViewPager时,请设置swipeListener
postsPager.setOnSwipeListener(new ViewPagerNoSwipe.OnSwipeListener() {
@Override
public void onSwipeRight() {
postsPager.setCurrentItem(postsPager.getCurrentItem() + 1,false);
}
@Override
public void onSwipeLeft() {
postsPager.setCurrentItem(postsPager.getCurrentItem() - 1, false);
}
...
}
私有静态类NoPageTransformer实现ViewPager.PageTransformer{
公共页面(@NonNull视图,浮动位置){
view.setTranslationX(view.getWidth()*-位置);
如果(位置=1.0f){
view.setVisibility(view.GONE);
}否则如果(位置==0.0f){
view.setVisibility(view.VISIBLE);
}否则{
view.setVisibility(view.GONE);
}
}
}
在else块中,您应该改为设置View.VISIBLE
postsPager.setOnSwipeListener(new ViewPagerNoSwipe.OnSwipeListener() {
@Override
public void onSwipeRight() {
postsPager.setCurrentItem(postsPager.getCurrentItem() + 1,false);
}
@Override
public void onSwipeLeft() {
postsPager.setCurrentItem(postsPager.getCurrentItem() - 1, false);
}
...
}
viewPager.setPageTransformer(false, new NoPageTransformer());
private static class NoPageTransformer implements ViewPager.PageTransformer {
public void transformPage(@NonNull View view, float position) {
view.setTranslationX(view.getWidth() * -position);
if (position <= -1.0f || position >= 1.0f) {
view.setVisibility(View.GONE);
} else if (position == 0.0f) {
view.setVisibility(View.VISIBLE);
} else {
view.setVisibility(View.GONE);
}
}
}