private int childCount;
private int lastXIntercept, lastYIntercept, lastX, lastY;
private Scroller mScroller;
private VelocityTracker mVelocityTracker;
public HorizontalEx(Context context) {
super(context);
init();
}
public HorizontalEx(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public HorizontalEx(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init();
}
private void init() {
mScroller = new Scroller(getContext());
mVelocityTracker = VelocityTracker.obtain();
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int width = MeasureSpec.getSize(widthMeasureSpec);
int height = MeasureSpec.getSize(heightMeasureSpec);
int widthMode = MeasureSpec.getMode(widthMeasureSpec);
int heightMode = MeasureSpec.getMode(heightMeasureSpec);
childCount = getChildCount();
measureChildren(widthMeasureSpec, heightMeasureSpec);
if (childCount == 0) {
setMeasuredDimension(0, 0);
} else if (widthMode == MeasureSpec.AT_MOST && heightMode == MeasureSpec.AT_MOST) {
width = childCount * getChildAt(0).getMeasuredWidth();
height = getChildAt(0).getMeasuredHeight();
setMeasuredDimension(width, height);
} else if (widthMode == MeasureSpec.AT_MOST) {
width = childCount * getChildAt(0).getMeasuredWidth();
setMeasuredDimension(width, height);
} else {
height = getChildAt(0).getMeasuredHeight();
setMeasuredDimension(width, height);
}
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
int left = 0;
for (int i = 0; i < getChildCount(); i++) {
final View child = getChildAt(i);
child.layout(left + l, t, r + left, b);
left += child.getMeasuredWidth();
}
}
/**
* 拦截事件
* @param ev
* @return
*/
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
boolean intercepted = false;
int x = (int) ev.getX();
