在android中将数据从活动传递到dialogFragment

这是我将数据从活动发送到对话框片段的方法

 MultipleColorFragment multipleColorFragment = new MultipleColorFragment();//Get Fragment Instance
  Bundle data = new Bundle();//Use bundle to pass data
  for(int i = 0;i<product_data_two.getColor().size();i++) {
  data.putStringArrayList(i + "", product_data_two.getColor().get(i));
  Log.d(TAG + " send fragment data",data.toString());
                            }
   data.putInt("size", product_data_two.getColor().size());
    multipleColorFragment.setArguments(data);//Finally set argument bundle to fragment

   final FragmentManager fm=getFragmentManager();
    multipleColorFragment.show(fm,"Color Set");

MultipleColorFragment MultipleColorFragment=新的MultipleColorFragment（）//获取片段实例
Bundle data=新Bundle（）//使用bundle传递数据
for（int i=0；iSince
product\u data\u two.getColor（）
返回一个
ArrayList
首先在一个单独的ArrayList中添加颜色，然后将其全部放入要传递给片段的包中

MultipleColorFragment multipleColorFragment = new 

    MultipleColorFragment();//Get Fragment Instance
        Bundle data = new Bundle();//Use bundle to pass data
        ArrayList<String> colorArray = new ArrayList<>()

        for(int i = 0; i<product_data_two.getColor().size(); i++) {
          colorArray.add(product_data_two.getColor().get(i));
          }

        data.putStringArrayList("colorArray", colorArray);
        data.putInt("size", product_data_two.getColor().size());
        multipleColorFragment.setArguments(data);//Finally set argument bundle to fragment

    final FragmentManager fm=getFragmentManager();
    multipleColorFragment.show(fm,"Color Set");

MultipleColorFragment MultipleColorFragment=新建
MultipleColorFragment（）；//获取片段实例
Bundle data=new Bundle（）；//使用Bundle传递数据
ArrayList colorArray=新的ArrayList（）
对于（int i=0；i）从
product\u data\u two.getColor（）
返回的列表类型是什么？发布您的product\u data\u two类及其子类（如果有）。在->getArguments（）.getStringArrayList（i+“”）中您得到了什么；Null？？请阅读以下内容：&，以增加获得问题答案的机会！D/MultipleColorFragment颜色集大小：0（来自我的日志猫）@Aishwarya Tiwari Yes.java.lang.NullPointerException:尝试调用虚拟方法'boolean java.util.ArrayList.add（java.lang.Object）'在空对象引用上是的，我也建议这样做。我仍然会遇到此错误。请尝试在空对象引用上调用虚拟方法'java.lang.String java.util.ArrayList.toString（）'。对不起。这一次是我的输入错误。非常感谢。
public class ProductTypeTwo {

private String productName;
private String brandID;
private String description;
private String productImage;
private Long colorNo;
private String category;
private String uid;
private ArrayList<ArrayList<String>> color;

public ProductTypeTwo(String productName, String brandID, String description, String productImage, Long colorNo, String category, String uid, ArrayList<ArrayList<String>> color) {
    this.productName = productName;
    this.brandID = brandID;
    this.description = description;
    this.productImage = productImage;
    this.colorNo = colorNo;
    this.category = category;
    this.uid = uid;
    this.color = color;
}


public ProductTypeTwo()
{

}

public String getProductName() {
    return productName;
}

public void setProductName(String productName) {
    this.productName = productName;
}

public String getBrandID() {
    return brandID;
}

public void setBrandID(String brandID) {
    this.brandID = brandID;
}

public String getDescription() {
    return description;
}

public void setDescription(String description) {
    this.description = description;
}

public String getProductImage() {
    return productImage;
}

public void setProductImage(String productImage) {
    this.productImage = productImage;
}

public Long getColorNo() {
    return colorNo;
}

public void setColorNo(Long colorNo) {
    this.colorNo = colorNo;
}

public String getCategory() {
    return category;
}

public void setCategory(String category) {
    this.category = category;
}

public String getUid() {
    return uid;
}

public void setUid(String uid) {
    this.uid = uid;
}

public ArrayList<ArrayList<String>> getColor() {
    return color;
}

public void setColor(ArrayList<ArrayList<String>> color) {
    this.color = color;
}

}

bundle.putSerializable("SOME_KEY",product_data_two.getColor());

getArgument = (ArrayList<ArrayList<String>>) bundle.getSerializable("SOME_KEY");

MultipleColorFragment multipleColorFragment = new 

    MultipleColorFragment();//Get Fragment Instance
        Bundle data = new Bundle();//Use bundle to pass data
        ArrayList<String> colorArray = new ArrayList<>()

        for(int i = 0; i<product_data_two.getColor().size(); i++) {
          colorArray.add(product_data_two.getColor().get(i));
          }

        data.putStringArrayList("colorArray", colorArray);
        data.putInt("size", product_data_two.getColor().size());
        multipleColorFragment.setArguments(data);//Finally set argument bundle to fragment

    final FragmentManager fm=getFragmentManager();
    multipleColorFragment.show(fm,"Color Set");

ArrayList<String> colorArray =getArguments().getStringArrayList("colorArray");