Android自定义左右或上下滑动翻页效果

public class SlideScrollView extends ScrollView implements PageSlide{ 
 private TotalSlide totalSlide; 
 public SlideScrollView(AppCompatActivity context) { 
  super(context); 
  try { 
   totalSlide=new TotalSlide(this,context); 
  } catch (NoSuchMethodException e) { 
   e.printStackTrace(); 
  } 
  totalSlide.init(context); 
  totalSlide.linearLayout.setOrientation(totalSlide.linearLayout.VERTICAL); 
  this.setLayoutParams(totalSlide.params); 
  this.setVerticalScrollBarEnabled(false); 
  this.addView(totalSlide.linearLayout); 
 } 
 public float getScroll() { 
  return super.getScrollY(); 
 } 
 public void setScroll(Integer value) { 
  super.setScrollY(value); 
 } 
 @Override 
 public boolean onTouchEvent(MotionEvent ev) { 
  try { 
   return totalSlide.MyTouchEvent(ev); 
  } catch (InvocationTargetException e) { 
   e.printStackTrace(); 
  } catch (IllegalAccessException e) { 
   e.printStackTrace(); 
  } 
  return TouchEvent(ev); 
 } 
 public boolean TouchEvent(MotionEvent ev){ 
  return super.onTouchEvent(ev); 
 } 
 public TotalSlide getTotalSlide(){ 
  return this.totalSlide; 
 } 
} 

public class SlideHorizontalScrollView extends HorizontalScrollView implements PageSlide{ 
  private TotalSlide totalSlide; 
  public SlideHorizontalScrollView(AppCompatActivity context){ 
    super(context); 
    try { 
      totalSlide=new TotalSlide(this,context); 
    } catch (NoSuchMethodException e) { 
      e.printStackTrace(); 
    } 
    totalSlide.init(context); 
    totalSlide.linearLayout.setOrientation(totalSlide.linearLayout.HORIZONTAL); 
    this.setLayoutParams(totalSlide.params); 
    this.setHorizontalScrollBarEnabled(false); 
    this.addView(totalSlide.linearLayout); 
  } 
  public float getScroll() { 
    return getScrollX(); 
  } 
  public void setScroll(Integer value) { 
    setScrollX(value); 
  } 
  @Override 
  public boolean onTouchEvent(MotionEvent ev) { 
    try { 
      return totalSlide.MyTouchEvent(ev); 
    } catch (InvocationTargetException e) { 
      e.printStackTrace(); 
    } catch (IllegalAccessException e) { 
      e.printStackTrace(); 
    } 
    return TouchEvent(ev); 
  } 
  public boolean TouchEvent(MotionEvent ev){ 
    return super.onTouchEvent(ev); 
  } 
  public TotalSlide getTotalSlide(){ 
    return this.totalSlide; 
  } 
} 

package com.hy.View; 
 
import android.os.Handler; 
import android.support.annotation.LayoutRes; 
import android.support.v7.app.AppCompatActivity; 
import android.util.DisplayMetrics; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.WindowManager; 
import android.widget.LinearLayout; 
 
import java.lang.reflect.InvocationTargetException; 
import java.lang.reflect.Method; 
import java.util.ArrayList; 
import java.util.List; 
 
/** 
 * 作用：实现上下左右滑动翻页，效果如 微信左右滑动效果 
 */ 
 
public interface PageSlide { 
  public TotalSlide getTotalSlide(); 
  public boolean TouchEvent(MotionEvent ev); 
  public float getScroll(); 
  public void setScroll(Integer value); 
  class TotalSlide{ 
    /** 
     * 设置翻页速度 
     * @param speed 速度，默认为20 
     */ 
    public void setSpeed(float speed){ 
      this.speed=speed; 
    } 
    TotalSlide(PageSlide pageSlide,AppCompatActivity context) throws NoSuchMethodException { 
      this.pageSlide=pageSlide; 
      this.context=context; 
      WindowManager wm = context.getWindowManager(); 
      if(pageSlide instanceof SlideHorizontalScrollView){ 
        fill = wm.getDefaultDisplay().getWidth(); 
        get=pageSlide.getClass().getMethod("getScroll"); 
        set=pageSlide.getClass().getMethod("setScroll",Integer.class); 
        //Toast.makeText(context,"TotalSlide:"+get.getName(),Toast.LENGTH_LONG).show(); 
      }else if(pageSlide instanceof SlideScrollView){ 
        fill = wm.getDefaultDisplay().getHeight(); 
        get=pageSlide.getClass().getMethod("getScroll"); 
        set=pageSlide.getClass().getMethod("setScroll",Integer.class); 
      } 
    } 
    //初始化 
    void init(AppCompatActivity context){ 
      DisplayMetrics metrics = new DisplayMetrics(); 
      context.getWindowManager().getDefaultDisplay().getMetrics(metrics); 
      params = new LinearLayout.LayoutParams(metrics.widthPixels, metrics.heightPixels); 
      linearLayout = new LinearLayout(context); 
      linearLayout.setLayoutParams(params); 
    } 
    /** 
     * 增加页面 
     * @param layout 该页面的布局文件 
     * @param myAppCompatActivity 该布局文件的java文件 
     */ 
    public void addPage(@LayoutRes int layout, MyAppCompatActivity myAppCompatActivity){ 
      View view=context.getLayoutInflater().inflate(layout,null); 
      myAppCompatActivity.view=view; 
      myAppCompatActivity.context=context; 
      myAppCompatActivity.onCreate(); 
      insertPage(view); 
    } 
    /** 
     * 增加页面 
     * @param layout 该页面的布局文件 
     */ 
    public void addPage(@LayoutRes int layout){ 
      View view=context.getLayoutInflater().inflate(layout,null); 
      insertPage(view); 
    } 
    /** 
     * 增加页面 
     * @param myAppCompatActivity 该布局文件的java文件 
     */ 
    public void addPage(MyAppCompatActivity myAppCompatActivity){ 
      View view=new View(context); 
      myAppCompatActivity.view=view; 
      myAppCompatActivity.context=context; 
      myAppCompatActivity.onCreate(); 
      insertPage(view); 
    } 
    /** 
     * 切换页面 
     * @param pageNo 切换页面的下标 
     */ 
    public void changePage(int pageNo) { 
      if(pageNo=0){ 
        now=fill*pageNo; 
        try { 
          set.invoke(pageSlide,(int)now); 
        } catch (IllegalAccessException e) { 
          e.printStackTrace(); 
        } catch (InvocationTargetException e) { 
          e.printStackTrace(); 
        } 
        this.pageNo=pageNo; 
      } 
    } 
 
    /** 
    * @return 返回当前页面编号 
    */ 
    public int getPageNo(){ 
      return pageNo; 
    } 
    /** 
     * 删除页面 
     * @param pageNo 删除页面的下标 
     */ 
    public void removePage(int pageNo) { 
      if (pageNo < pageList.size() && pageNo >= 0) { 
        linearLayout.removeView(pageList.get(pageNo)); 
        pageList.remove(pageNo); 
      } 
    } 
    /**********************************************************************************************/ 
    //展示页面的Activity 
    private AppCompatActivity context; 
    //转换页面的速度，默认为20 
    private float speed=20; 
    //当前Activity的页面滑动值倍数 
    private float fill; 
    //当前页面 
    private int pageNo=0; 
    //当前滚动条的位置 
    private float now=0; 
    //手指点击的位置 
    private float Down=0; 
    //手指松开的位置 
    private float Up=0; 
    //滑动方向 
    private float value=0; 
    //是否为第一次点击 
    private boolean b=true; 
    //页面集合 
    private List pageList=new ArrayList<>(); 
    //辅助线程执行 
    private Handler handler=new Handler(); 
    //get方法 
    private Method get; 
    //get方法 
    private Method set; 
    //本页布局控件 
    LinearLayout linearLayout; 
    //页面大小 
    LinearLayout.LayoutParams params; 
    //多态 
    private PageSlide pageSlide; 
    //简化代码 
    private void insertPage(View view){ 
      view.setLayoutParams(params); 
      pageList.add(view); 
      linearLayout.addView(view); 
    } 
    //滑动线程 
    private Runnable runnable=new Runnable() { 
      @Override 
      public void run() { 
        try { 
          if((b&&(float)get.invoke(pageSlide)>=now)||(!b&&(float)get.invoke(pageSlide)<=now)){ 
            set.invoke(pageSlide,(int) (now-value)); 
            b=true; 
            handler.removeCallbacks(runnable); 
          }else{ 
            handler.postDelayed(runnable,1); 
          } 
          if(now==0&&value>0) { 
            set.invoke(pageSlide,(int)((float)get.invoke(pageSlide))); 
          }else{ 
            set.invoke(pageSlide,(int)((float)get.invoke(pageSlide)+value)); 
          } 
        } catch (IllegalAccessException e) { 
          e.printStackTrace(); 
        } catch (InvocationTargetException e) { 
          e.printStackTrace(); 
        } 
      } 
    }; 
    //手指判断 
    public boolean MyTouchEvent(MotionEvent ev) throws InvocationTargetException, IllegalAccessException { 
      if(b){ 
        Down=(float)get.invoke(pageSlide); 
        b=false; 
      } 
      if(ev.getAction()==MotionEvent.ACTION_UP){ 
        Up=(float)get.invoke(pageSlide); 
        value=Up>Down?Up-Down:Down-Up; 
        b=Up>Down?true:false; 
        if(value>250){ 
          value=b?speed:-speed; 
          now=b?now+fill:now-fill; 
          pageNo= (int) (now/fill); 
          handler.post(runnable); 
        }else{ 
          value=b?-speed:speed; 
          handler.post(runnable); 
        } 
        return false; 
      } 
      return pageSlide.TouchEvent(ev); 
    } 
  } 
} 

package com.hy.View; 
 
import android.support.v7.app.AppCompatActivity; 
import android.view.View; 
 
/** 
 * 分页面的java类继承此类 取代AppCompatActivity 
 */ 
 
public abstract class MyAppCompatActivity { 
 /** 
  * 当作 this 来用 
  */ 
 public AppCompatActivity context; 
 /** 
  * 当前页面的根布局 用它使用 findViewById() 找控件 
  */ 
 public View view; 
 /** 
  * 初始值在这里面定义 
  */ 
 public abstract void onCreate(); 
}