** * 1、嵌套滚动兼容 * 2、单击事件 * 3、子View缩放兼容 * * @author chrisZou * @blog http://blog.youkuaiyun.com/mcy478643968/article/details/19609407 * @blog http://blog.youkuaiyun.com/leewenjin/article/details/21011841 * @from http://blog.youkuaiyun.com/fy993912_chris/article/details/75006138 * @email chrisSpringSmell@gmail.com */ public class CustomCompatViewPager extends ViewPager { public static final int CLICKED_DISTANCE = 10; OnItemClickListener onItemClickListener; float curX = 0f; float curY = 0f; float downX = 0f; float downY = 0f; private int realSize = 0; public CustomCompatViewPager(Context context) { super(context); } public CustomCompatViewPager(Context context, AttributeSet attrs) { super(context, attrs); } public void setRealSize(int realSize) { this.realSize = realSize; } @Override public boolean onTouchEvent(MotionEvent ev) { int curIndex = getCurrentItem(); curX = ev.getX(); curY = ev.getY(); switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: downX = curX; downY = curY; break; case MotionEvent.ACTION_UP: if (Math.abs(downX - curX) <= CLICKED_DISTANCE && Math.abs(downY - curY) <= CLICKED_DISTANCE) { onItemClick(getAdapter(), curIndex, getChildAt(curIndex)); return true; } case MotionEvent.ACTION_MOVE: if (Math.abs(curX - downX) > Math.abs(curY - downY)) getParent().requestDisallowInterceptTouchEvent(true);//true为拦截 else { getParent().requestDisallowInterceptTouchEvent(false); } break; } return super.onTouchEvent(ev); } /** * 解决viewpager嵌套ImageScaleView的问题 * * @param ev * @return */ @Override public boolean onInterceptTouchEvent(MotionEvent ev) { try { return super.onInterceptTouchEvent(ev); } catch (IllegalArgumentException ex) { ex.printStackTrace(); } return false; } /** * 单击 */ private void onItemClick(PagerAdapter adapter, int currentItem, View itemView) { if (onItemClickListener != null) { if (realSize == 0) realSize = adapter.getCount(); onItemClickListener.onItemClick(adapter, currentItem % realSize, itemView); } } public void setOnItemClickListener(OnItemClickListener onItemClickListener) { this.onItemClickListener = onItemClickListener; } public static class DepthPageTransformer implements ViewPager.PageTransformer { private static final float MIN_SCALE = 0.75f; public void transformPage(View view, float position) { int pageWidth = view.getWidth(); if (position < -1) { // [-Infinity,-1) // This page is way off-screen to the left. view.setAlpha(0); } else if (position <= 0) { // [-1,0] // Use the default slide transition when moving to the left page view.setAlpha(1); view.setTranslationX(0); view.setScaleX(1); view.setScaleY(1); } else if (position <= 1) { // (0,1] // Fade the page out. view.setAlpha(1 - position); // Counteract the default slide transition view.setTranslationX(pageWidth * -position); // Scale the page down (between MIN_SCALE and 1) float scaleFactor = MIN_SCALE + (1 - MIN_SCALE) * (1 - Math.abs(position)); view.setScaleX(scaleFactor); view.setScaleY(scaleFactor); } else { // (1,+Infinity] // This page is way off-screen to the right. view.setAlpha(0); } } } public static class ZoomOutPageTransformer implements ViewPager.PageTransformer { private static final float MIN_SCALE = 0.85f; private static final float MIN_ALPHA = 0.5f; @SuppressLint("NewApi") public void transformPage(View view, float position) { int pageWidth = view.getWidth(); int pageHeight = view.getHeight(); Log.e("TAG", view + " , " + position + ""); if (position < -1) { // [-Infinity,-1) // This page is way off-screen to the left. view.setAlpha(0); } else if (position <= 1) //a页滑动至b页 ; a页从 0.0 -1 ;b页从1 ~ 0.0 { // [-1,1] // Modify the default slide transition to shrink the page as well float scaleFactor = Math.max(MIN_SCALE, 1 - Math.abs(position)); float vertMargin = pageHeight * (1 - scaleFactor) / 2; float horzMargin = pageWidth * (1 - scaleFactor) / 2; if (position < 0) { view.setTranslationX(horzMargin - vertMargin / 2); } else { view.setTranslationX(-horzMargin + vertMargin / 2); } // Scale the page down (between MIN_SCALE and 1) view.setScaleX(scaleFactor); view.setScaleY(scaleFactor); // Fade the page relative to its size. view.setAlpha(MIN_ALPHA + (scaleFactor - MIN_SCALE) / (1 - MIN_SCALE) * (1 - MIN_ALPHA)); } else { // (1,+Infinity] // This page is way off-screen to the right. view.setAlpha(0); } } } public static class FlagPageTransformer implements ViewPager.PageTransformer { private static final float MIN_SCALE = 0.85f; private static final float MIN_ALPHA = 0.5f; @SuppressLint("NewApi") public void transformPage(View view, float position) { int pageWidth = view.getWidth(); int pageHeight = view.getHeight(); Log.e("TAG", view + " , " + position + ""); if (position < -1) { // [-Infinity,-1) // This page is way off-screen to the left. view.setAlpha(0); } else if (position <= 1) //a页滑动至b页 ; a页从 0.0 -1 ;b页从1 ~ 0.0 { // [-1,1] // Modify the default slide transition to shrink the page as well float scaleFactor = Math.max(MIN_SCALE, 1 - Math.abs(position)); float vertMargin = pageHeight * (1 - scaleFactor) / 2; float horzMargin = pageWidth * (1 - scaleFactor) / 2; if (position < 0) { view.setTranslationX(horzMargin - vertMargin / 2); } else { view.setTranslationX(-horzMargin + vertMargin / 2); } // Scale the page down (between MIN_SCALE and 1) view.setScaleX(scaleFactor); view.setScaleY(scaleFactor); // Fade the page relative to its size. view.setAlpha(MIN_ALPHA + (scaleFactor - MIN_SCALE) / (1 - MIN_SCALE) * (1 - MIN_ALPHA)); } else { // (1,+Infinity] // This page is way off-screen to the right. view.setAlpha(0); } } } public interface OnItemClickListener { void onItemClick(PagerAdapter adapter, int currentItem, View itemView); } }