Nested Scrolling

public class NestedScrollView extends ScrollView
        implements Component.TouchEventListener, ViewGroup, NestedScrollingParent

    // NestedScrollingParent

    @Override
    public boolean onStartNestedScroll(Component child, Component target, int axes, int type) {
        return true; // 需要自行实现逻辑
    }

    @Override
    public void onNestedScrollAccepted(Component child, Component target, int axes, int type) {
        mParentHelper.onNestedScrollAccepted(child, target, axes, type);
    }

    @Override
    public void onStopNestedScroll(Component target, int type) {
        mParentHelper.onStopNestedScroll(target, type);
    }

    @Override
    public void onNestedScroll(Component target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed, int type, int[] consumed) {
         // 需要自行实现逻辑
    }

    @Override
    public void onNestedPreScroll(Component target, int dx, int dy, int[] consumed, int type) {
         // 需要自行实现逻辑
    }

    @Override
    public boolean onNestedFling(Component target, float velocityX, float velocityY, boolean consumed) {
         // 需要自行实现逻辑
        return false;
    }

    @Override
    public boolean onNestedPreFling(Component target, float velocityX, float velocityY) {
        // 需要自行实现逻辑
        return false;
    }
    
    @Override
    public int getNestedScrollAxes() {
        return mParentHelper.getNestedScrollAxes();
    }