Tengine ViewPager, a component that slides up and down, android VerticalPager slides up and down, and viewpager slides up and down

Tengine ViewPager, a component that slides up and down, android VerticalPager slides up and down, and viewpager slides up and down

package com.zhulin.android.atools;import android.content.Context;import android.util.AttributeSet;import android.util.Log;import android.view.MotionEvent;import android.view.VelocityTracker;import android.view.View;import android.view.ViewGroup;import android.view.animation.Interpolator;import android.widget.Scroller;import android.widget.Toast;public class VerticalPager extends ViewGroup{private Scroller mScroller;private Context mContext;public VerticalPager(Context context, AttributeSet attrs) {super(context, attrs);this.mContext=context;mScroller=new Scroller(context);//mScroller=new Scroller(mContext, new Interpolator() {////@Override//public float getInterpolation(float input) {//return 300;//}//});}@Overrideprotected void onLayout(boolean changed, int l, int t, int r, int b) {int totalHeight=0;int count=getChildCount();for(int i=0;i<count;i++){View childView=getChildAt(i);//int measureHeight=childView.getMeasuredHeight();//int measureWidth=childView.getMeasuredWidth();childView.layout(l, totalHeight, r, totalHeight+b);totalHeight+=b;}}private VelocityTracker mVelocityTracker;@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {int width=MeasureSpec.getSize(widthMeasureSpec);int height=MeasureSpec.getSize(heightMeasureSpec);int count=getChildCount();for(int i=0;i<count;i++){getChildAt(i).measure(width, height);}setMeasuredDimension(width, height);}private int mLastMotionY;@Overridepublic boolean onTouchEvent(MotionEvent event) {if(mVelocityTracker==null){mVelocityTracker=VelocityTracker.obtain();}mVelocityTracker.addMovement(event);int action=event.getAction();float y=event.getY();switch(action){case MotionEvent.ACTION_DOWN:if(!mScroller.isFinished()){mScroller.abortAnimation();}mLastMotionY=(int) y;Log.d("montion", ""+getScrollY());break;case MotionEvent.ACTION_MOVE:int deltaY=(int) (mLastMotionY-y);scrollBy(0,deltaY);//mScroller.startScroll(0, getScrollY(), 0, deltaY);invalidate();mLastMotionY=(int) y;break;case MotionEvent.ACTION_UP:if(mVelocityTracker!=null){mVelocityTracker.recycle();mVelocityTracker=null;}if(getScrollY()<0){mScroller.startScroll(0, -400, 0, 400);}else if(getScrollY()>(getHeight()*(getChildCount()-1))){View lastView=getChildAt(getChildCount()-1);mScroller.startScroll(0,lastView.getTop()+300, 0, -300);}else{int position=getScrollY()/getHeight();int mod=getScrollY()%getHeight();if(mod>getHeight()/3){View positionView=getChildAt(position+1);mScroller.startScroll(0, positionView.getTop()-300, 0, +300);}else{View positionView=getChildAt(position);mScroller.startScroll(0, positionView.getTop()+300, 0, -300);}}invalidate();break;//case MotionEvent.ACTION_MASK://if(getScrollY()<0){//mScroller.startScroll(0, 0, 0, 0);//}else if(getScrollY()>(getHeight()*(getChildCount()-1)){//}//invalidate();//break;}return true;}@Overridepublic void computeScroll() {super.computeScroll();if(mScroller.computeScrollOffset()){scrollTo(0, mScroller.getCurrY());}else{}}}

Xml Layout

<?xml version="1.0" encoding="UTF-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <com.zhulin.android.atools.VerticalPager        android:id="@+id/vertyPager1"        android:layout_width="fill_parent"        android:layout_height="fill_parent" >        <TextView            android:background="@drawable/a1"            android:id="@+id/textView1"            android:layout_width="match_parent"            android:layout_height="100dp"            android:text="TextView1111" />        <TextView             android:background="@drawable/a2"            android:id="@+id/textView2"            android:layout_width="fill_parent"            android:layout_height="100dp"            android:text="TextView2222" />                 <TextView             android:background="@drawable/a3"            android:id="@+id/textView3"            android:layout_width="fill_parent"            android:layout_height="100dp"            android:text="TextView2222" />                   <TextView             android:background="@drawable/a4"            android:id="@+id/textView4"            android:layout_width="fill_parent"            android:layout_height="100dp"            android:text="TextView2222" />    </com.zhulin.android.atools.VertyPager></LinearLayout>

Android viewpager

Github.com/...wPager

Let's take a look at the viewpager that slides up and down.

How does android make the ListView and ViewPager dynamic images slide up and down together?

Make ViewPager the Header of the ListView and you can use ListView. addHeaderView ()