为什么80%的码农都做不了架构师?>>>
import android.support.v4.view.ViewPager.PageTransformer;
import android.view.View;/*** created by bruce.zhang*/
public class BBSPicturePageTransformer implements PageTransformer {private static final float ROTATION_MAX = 10.0f;private static float MIN_SCALE = 0.9f;private static float MIN_ALPHA = 0.7f;private float mRotation;@Overridepublic void transformPage(View view, float position) {int pageWidth = view.getWidth();if (position < -1) { view.setTranslationX(0);view.setRotation(0);view.setRotation(0);view.setScaleX(1);view.setScaleY(1);view.setAlpha(MIN_ALPHA);} else if (position <= 0) {view.setTranslationX(0);mRotation = (ROTATION_MAX * position);view.setPivotX(view.getMeasuredWidth() * 0.5f);view.setPivotY(view.getMeasuredHeight());view.setRotation(mRotation);float scaleFactor = MIN_SCALE + (1 - MIN_SCALE) * (1 - Math.abs(position));view.setScaleX(scaleFactor);view.setScaleY(scaleFactor);float alphaFactor = MIN_ALPHA + (1 - MIN_ALPHA) * (1 - Math.abs(position));view.setAlpha(alphaFactor);} else if (position <= 1) { view.setTranslationX(pageWidth * -position);view.setRotation(0);view.setScaleX(1);view.setScaleY(1);view.setAlpha(1);} else {view.setTranslationX(0);view.setRotation(0);view.setScaleX(1);view.setScaleY(1);view.setAlpha(1);}}}
import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.support.v4.view.MotionEventCompat;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewConfigurationCompat;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.animation.Interpolator;import com.kidswant.ss.R;
import com.kidswant.ss.ui.bbs.model.PicItem;import java.lang.ref.WeakReference;
import java.lang.reflect.Field;
import java.util.ArrayList;/*** Created by bruce.zhang on 2015/12/19.*/
public class BBSPictureViewPager extends ViewPager {private static BBSPicturePageTransformer mPageTransformer = new BBSPicturePageTransformer();private BBSPicturePageAdapter mAdapter;private int mPadding = 0;private ViewPagerHandler mHandler = new ViewPagerHandler(this);private class ViewPagerHandler extends Handler {private final WeakReference<BBSPictureViewPager> mService;ViewPagerHandler(BBSPictureViewPager service) {super();mService = new WeakReference<BBSPictureViewPager>(service);}@SuppressWarnings("unchecked")@Overridepublic void handleMessage(Message msg) {BBSPictureViewPager service = mService.get();if (service == null ) {return;}if(msg.what == 898989){int pageIndex = msg.arg1;setCurrentItem(pageIndex, false);}}};public BBSPictureViewPager(Context context) {super(context);init();}public BBSPictureViewPager(Context context, AttributeSet attrs) {super(context, attrs);init();}private void init(){setOffscreenPageLimit(2);setPageTransformer(true, mPageTransformer);int margin = getResources().getDimensionPixelSize(R.dimen.common_horizontal_margin);mPadding = 2 * margin;try {Field mScroller;mScroller = ViewPager.class.getDeclaredField("mScroller");mScroller.setAccessible(true);Field interpolator = ViewPager.class.getDeclaredField("sInterpolator");interpolator.setAccessible(true);FixedSpeedScroller scroller = new FixedSpeedScroller(getContext(), (Interpolator) interpolator.get(null));// scroller.setFixedDuration(5000);mScroller.set(this, scroller);} catch (NoSuchFieldException e) {} catch (IllegalArgumentException e) {} catch (IllegalAccessException e) {}final ViewConfiguration configuration = ViewConfiguration.get(getContext());mTouchSlop = ViewConfigurationCompat.getScaledPagingTouchSlop(configuration);setOnPageChangeListener(new OnPageChangeListener() {@Overridepublic void onPageScrollStateChanged(int state) {}public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels){}@Overridepublic void onPageSelected(int position) {mHandler.removeMessages(898989);if(mAdapter.getCount() <= 1) return;int pageIndex = position;if (position == 0) {// 当视图在第一个时,将页面号设置为图片的最后一张。pageIndex = mAdapter.getCount() - 2;} else if (position == mAdapter.getCount() - 1) {// 当视图在最后一个是,将页面号设置为图片的第一张。pageIndex = 1;}if (position != pageIndex) {mHandler.sendMessageDelayed(mHandler.obtainMessage(898989, pageIndex, 0, 0), 400);}}});}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){int width = MeasureSpec.getSize(widthMeasureSpec);int height = width - mPadding;super.onMeasure(MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY),MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY));}private float mLastMotionX;private float mLastMotionY;private boolean mIsBeingDragged;private int mTouchSlop;@Overridepublic boolean onInterceptTouchEvent(MotionEvent ev) {boolean intercept = super.onInterceptTouchEvent(ev);if(!intercept){final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {mIsBeingDragged = false;}switch (action) {case MotionEvent.ACTION_MOVE: {final float x = ev.getX();final float xDiff = Math.abs(x - mLastMotionX);final float y = ev.getY();final float yDiff = Math.abs(y - ev.getY());mIsBeingDragged = xDiff > mTouchSlop || yDiff > mTouchSlop;break;}case MotionEvent.ACTION_DOWN: {mIsBeingDragged = false;mLastMotionX = ev.getX();mLastMotionY = ev.getY();break;}}intercept = mIsBeingDragged;}return intercept;}public void setData(LayoutInflater inflater, int coverWidth, ArrayList<PicItem> picItems, View.OnClickListener onClickListener, int currentItem){setData(inflater, coverWidth, picItems, onClickListener, onClickListener, currentItem);}public void setData(LayoutInflater inflater, int coverWidth, ArrayList<PicItem> picItems, View.OnClickListener onClickListener, View.OnClickListener onImageTagClickListener, int currentItem){View view1 = ((ViewGroup)getParent()).findViewById(R.id.img_multi_hint1);View view2 = ((ViewGroup)getParent()).findViewById(R.id.img_multi_hint2);int shadowCount = (picItems == null || picItems.size() <= 1) ? 0 : (picItems.size() == 2 ? 1: 2);if(view1 != null && view2 != null){if(shadowCount == 0){view1.setVisibility(View.GONE);view2.setVisibility(View.GONE);}else if(shadowCount == 1){view1.setVisibility(View.VISIBLE);view2.setVisibility(View.GONE);}else{view1.setVisibility(View.VISIBLE);view2.setVisibility(View.VISIBLE);}}PagerAdapter adapter = getAdapter();if(adapter == null){mAdapter = new BBSPicturePageAdapter(inflater, coverWidth);}mAdapter.setOnItemClickListener(onClickListener);mAdapter.setOnImageTagClickListener(onImageTagClickListener);mAdapter.setDatas(picItems);setAdapter(mAdapter);if(currentItem == 0){currentItem = 1;}currentItem = Math.min(currentItem, mAdapter.getCount() - 1);setCurrentItem(currentItem, false);}
}
import android.support.v4.view.PagerAdapter;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;import com.kidswant.ss.R;
import com.kidswant.ss.ui.bbs.fragment.ImageTagDragableLayout;
import com.kidswant.ss.ui.bbs.model.PicItem;
import com.kidswant.ss.ui.bbs.service.BBSUIUtil;
import com.kidswant.ss.util.ImageLoaderUtil;import java.util.ArrayList;/*** created by bruce.zhang*/
public class BBSPicturePageAdapter extends PagerAdapter {private LayoutInflater mInflater;private SparseArray<View> mViews;private ArrayList<PicItem> mDatas = new ArrayList<PicItem>();private int mCoverWidth;private View.OnClickListener mOnClickListener;private View.OnClickListener mOnImageTagClickListener = null;BBSPicturePageAdapter(LayoutInflater inflater, int coverWidth) {mInflater = inflater;mViews = new SparseArray<View>();mCoverWidth = coverWidth;}public void setOnItemClickListener(View.OnClickListener onClickListener){mOnClickListener = onClickListener;}public void setOnImageTagClickListener(View.OnClickListener onClickListener){mOnImageTagClickListener = onClickListener;}public void setDatas(ArrayList<PicItem> datas){mDatas.clear();if(datas != null){mDatas.addAll(datas);}notifyDataSetChanged();}@Overridepublic int getCount() {if(mDatas == null || mDatas.isEmpty()){return 0;}else if(mDatas.size() == 1){return 1;}else{return mDatas.size() + 2;}}@Overridepublic boolean isViewFromObject(View view, Object object) {return view == object;}@Overridepublic void destroyItem(ViewGroup container, int position, Object object) {View view = mViews.get(position);if(view != null){container.removeView(view);}else{container.removeView((View) object);}}@Overridepublic Object instantiateItem(ViewGroup container, int position) {View view = mViews.get(position);if(view == null){view = mInflater.inflate(R.layout.bbs_picture_item, container, false);mViews.put(position, view);}PicItem picItem = null;if(mDatas.size() == 1){picItem = mDatas.get(position);}else{if (position == 0) {picItem = mDatas.get(mDatas.size() - 1);} else if (position == (getCount() - 1)) {picItem = mDatas.get(0);} else {picItem = mDatas.get(position - 1);}}View frame = view.findViewById(R.id.fl_image_tag);int padding = mDatas.size() <= 1 ? 0 : 1;frame.setPadding(padding, padding, padding, padding);setCover((ImageTagDragableLayout) view.findViewById(R.id.rl_image_tag), picItem, padding);view.setId(position);container.addView(view);return view;}
}