修改ViewPager呼叫setCurrentItem時，滑屏的速度 ,解決滑動之間切換動畫難看
一、自定義一個Scroll類，用於控制ViewPager滑動速度：
import android.view.animation.Interpolator;
import android.widget.Scroller;
public class FixedSpeedScroller extends Scroller {
private int mDuration = 0;
public FixedSpeedScroller(Context context) {
super(context);
}
public FixedSpeedScroller(Context context, Interpolator interpolator) {
super(context, interpolator);
}
public FixedSpeedScroller(Context context, Interpolator interpolator, boolean flywheel) {
super(context, interpolator, flywheel);
}
@Override
public void startScroll(int startX, int startY, int dx, int dy, int duration) {
super.startScroll(startX, startY, dx, dy, mDuration);
}
@Override
public void startScroll(int startX, int startY, int dx, int dy) {
super.startScroll(startX, startY, dx, dy, mDuration);
}
}
二、在初始化ViewPager時，對ViewPager作如下設定：
* 設定ViewPager的滑動速度
*
* */
private void setViewPagerScrollSpeed( ){
try {
Field mScroller = null;
mScroller = ViewPager.class.getDeclaredField("mScroller");
mScroller.setAccessible(true);
FixedSpeedScroller scroller = new FixedSpeedScroller( mViewPager.getContext( ) );
mScroller.set( mViewPager, scroller);
}catch(NoSuchFieldException e){
}catch (IllegalArgumentException e){
}catch (IllegalAccessException e){
}
}