Question

我正在关注示例Here link

用于将子列表数组从子活动发送到父活动但是检索通过意图发送的数组列表

时在父活动中获取错误

这是代码：

    ArrayList<StockDetails> stockList = new ArrayList<StockDetails>();

   setting array list data in some function after that 

    Intent intent = new Intent();
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    //intent.putExtra("stkList",bndle);
    intent.putParcelableArrayListExtra("stkList",stockList );

在父母活动中

@SuppressWarnings("unchecked")
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {     
    if (resultCode == RESULT_OK ) {    
        if (data.hasExtra("stkList")) {             
            //Bundle wrapper = data.getBundleExtra("stkList");                          
                ArrayList<StockDetails> stockkList = data.getParcelableArrayListExtra("stkList");
                System.out.println("stockkList1::"+stockkList.size());                  
                System.out.println("stockkList2::"+stockkList.get(0).getStkQty());---here the error             

        }
    }
}

股票详情类

package com.eanda.mobisale.model;

import java.io.Serializable;

import android.os.Parcel;
import android.os.Parcelable;

public class StockDetails implements Comparable<StockDetails>,Parcelable,Serializable {
    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    // protected variables
    protected int eatPrdSubCatId;
    protected String eatMstStkGrpId;
    protected String stkGrpNm;
    protected String eatMstStkItemId;
    protected String stkItemNm;
    protected int stkQty;

    @Override
    public int compareTo(StockDetails another) {
        if (this.stkItemNm.equals(another.stkItemNm)) {
            return ((Integer) this.eatPrdSubCatId)
                    .compareTo(another.eatPrdSubCatId);
        } else {
            return this.stkItemNm.compareTo(another.stkItemNm);
        }
    }

    @Override
    public String toString() {
        return this.stkItemNm;
    }



    /**
     * @return the eatPrdSubCatId
     */
    public int getEatPrdSubCatId() {
        return eatPrdSubCatId;
    }

    /**
     * @param eatPrdSubCatId
     *            the eatPrdSubCatId to set
     */
    public void setEatPrdSubCatId(int eatPrdSubCatId) {
        this.eatPrdSubCatId = eatPrdSubCatId;
    }

    /**
     * @return the eatMstStkGrpId
     */
    public String getEatMstStkGrpId() {
        return eatMstStkGrpId;
    }

    /**
     * @param eatMstStkGrpId
     *            the eatMstStkGrpId to set
     */
    public void setEatMstStkGrpId(String eatMstStkGrpId) {
        this.eatMstStkGrpId = eatMstStkGrpId;
    }

    /**
     * @return the stkGrpNm
     */
    public String getStkGrpNm() {
        return stkGrpNm;
    }

    /**
     * @param stkGrpNm
     *            the stkGrpNm to set
     */
    public void setStkGrpNm(String stkGrpNm) {
        this.stkGrpNm = stkGrpNm;
    }

    /**
     * @return the eatMstStkItemId
     */
    public String getEatMstStkItemId() {
        return eatMstStkItemId;
    }

    /**
     * @param eatMstStkItemId
     *            the eatMstStkItemId to set
     */
    public void setEatMstStkItemId(String eatMstStkItemId) {
        this.eatMstStkItemId = eatMstStkItemId;
    }

    /**
     * @return the stkItemNm
     */
    public String getStkItemNm() {
        return stkItemNm;
    }

    /**
     * @param stkItemNm
     *            the stkItemNm to set
     */
    public void setStkItemNm(String stkItemNm) {
        this.stkItemNm = stkItemNm;
    }

    /**
     * @return the stkQty
     */
    public int getStkQty() {
        return stkQty;
    }

    /**
     * @param stkQty the stkQty to set
     */
    public void setStkQty(int stkQty) {
        this.stkQty = stkQty;
    }

    @Override
    public int describeContents() {
        return this.hashCode();

    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeInt(stkQty);
        dest.writeString(stkItemNm);        
    }


    public static final Parcelable.Creator<StockDetails> CREATOR
    = new Parcelable.Creator<StockDetails>() {
        public StockDetails createFromParcel(Parcel in) {
            return new StockDetails(in);
        }

        public StockDetails[] newArray(int size) {
            return new StockDetails[size];
        }
    };

     private StockDetails(Parcel in) {
         int qty = in.readInt();
         String  nm = in.readString();
         new StockDetails(qty, nm);
         //stockDetails = new StockDetails(qty, nm);
     }

    public StockDetails(int qty, String nm) {
        this.stkQty = qty;
        this.stkItemNm = nm;
    }

    public StockDetails() {
        // TODO Auto-generated constructor stub
    }
}

获取记录器stockkList1 :: 1和stockkList2 :: 0这是不正确的

Answer 1

您没有正确实施，Constructor with Parcel as input应该是：

private StockDetails(Parcel in) {
     this.stkQty = in.readInt();
     this.stkItemNm = in.readString();
 }

您也不需要在使用Serializable时实施Parcelable。

希望这有帮助。

如何将Parcelable数组数据发送回父活动android？

1 个答案: