物料数据表上的角度物料分页器问题

Question

我有一个从服务填充的数据表，一切正常，除了当我将鼠标悬停在箭头上进行分页时，我会收到此错误

我有：

private int recyclerVisiblePosition;    
@Override
public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
   super.onScrollStateChanged(recyclerView, newState);

   if (newState != RecyclerView.SCROLL_STATE_IDLE) {
      return;
   }

   getNewPosition(recyclerView);
}

@Override
public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
    super.onScrolled(recyclerView, dx, dy);

    if (dx == 0 && dy == 0) {
        getNewPosition(recyclerView);
    } 
}

private void getNewPosition(@NonNull final RecyclerView recyclerView) {
    final LinearLayoutManager layoutManager = ((LinearLayoutManager)recyclerView.getLayoutManager());
    if (layoutManager != null) {
        recyclerVisiblePosition = layoutManager.findLastVisibleItemPosition();
    }
}

，并且当我从服务中获取数据时也会重置：

   ngOnInit() {
      this.dataTableSource.paginator = this.paginator;
   }

html是：

processedTransactions.subscribe(transactions => {

      this.dataTableSource = newMatTableDataSource<DataTableRow(this.dataTableData);
          this.dataTableSource.paginator = this.paginator;
          this.dataTableSource.sort = this.sort;
})

具有：

<mat-paginator [length]="length"
              [pageSize]="pageSize"
              [pageSizeOptions]="pageSizeOptions"
              >
</mat-paginator>

当我将鼠标悬停在箭头上进行分页时，为什么会出现此错误？

此外，当我对数据进行硬编码时，它仍然会给出相同的错误

Answer 1

"@angular/cdk": "^7.3.5",
"@angular/material": "^7.3.7",

需要是：

"@angular/cdk": "^7.3.7",
"@angular/material": "^7.3.7",

如果是第一个，您将在数据表的MatTooltip上收到一个神秘的错误