android.support.v4.view.FixedSpeedScroller.java Source code

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Here is the source code for android.support.v4.view.FixedSpeedScroller.java

Source

package android.support.v4.view;

import java.lang.reflect.Field;

import android.content.Context;
import android.support.v4.view.ViewPager;
import android.view.animation.Interpolator;
import android.widget.Scroller;

/**
 * 
 * @description ,??
 * @author lihy
 * @date 2014714 ?5:43:53
 */
public class FixedSpeedScroller extends Scroller {
    Context context;
    private int mDuration = 500;

    public FixedSpeedScroller(Context context) {
        super(context);
        this.context = context;
    }

    public FixedSpeedScroller(Context context, Interpolator interpolator) {
        super(context, interpolator);
        this.context = context;
    }

    /**
     *  ,?? ,??
     * 
     * @param vp
     *            ViewPager 
     * @param time
     *            
     * @description
     * @author lihy
     * @date 2014714 ?5:44:38
     */
    public void setDuration(ViewPager vp, int time) {
        try {
            Field field = ViewPager.class.getDeclaredField("mScroller");
            field.setAccessible(true);
            this.setmDuration(time);
            field.set(vp, this);
        } catch (Exception e) {

        }
    }

    @Override
    public void startScroll(int startX, int startY, int dx, int dy, int duration) {
        // System.out.println("startScroll1");
        super.startScroll(startX, startY, dx, dy, mDuration);
    }

    @Override
    public void startScroll(int startX, int startY, int dx, int dy) {
        // System.out.println("startScroll2");
        super.startScroll(startX, startY, dx, dy, mDuration);
    }

    public void setmDuration(int time) {
        mDuration = time;
    }

    public int getmDuration() {
        return mDuration;
    }
}