使用viewdraghelper在自定义视图中忽略父对象的子对象match_parent

ViewDragHelper mDragHelper = ViewDragHelper.create(this, 1.0f, new ViewDragHelper.Callback() {
    // 重写相关方法
});

@Override
public void onViewDragStateChanged(int state) {
    super.onViewDragStateChanged(state);
    if (state == ViewDragHelper.STATE_IDLE) {
        // 拖拽结束时，恢复子视图的布局参数
        resetChildLayoutParams();
    }
}

@Override
public boolean tryCaptureView(@NonNull View child, int pointerId) {
    // 判断是否捕获子视图，返回true表示捕获，返回false表示不捕获
    return !isChildMatchParent(child);
}

private boolean isChildMatchParent(View child) {
    ViewGroup.LayoutParams layoutParams = child.getLayoutParams();
    return layoutParams.width == ViewGroup.LayoutParams.MATCH_PARENT ||
            layoutParams.height == ViewGroup.LayoutParams.MATCH_PARENT;
}

private void resetChildLayoutParams() {
    for (int i = 0; i < getChildCount(); i++) {
        View child = getChildAt(i);
        ViewGroup.LayoutParams layoutParams = child.getLayoutParams();
        layoutParams.width = child.getWidth();
        layoutParams.height = child.getHeight();
        child.setLayoutParams(layoutParams);
    }
}