[英]Passing parcelable object to new activity returns null
我将 Parcelable 数据类的对象传递给一个简单字符串的活动我可以将它放在一个意图中并将它传递给另一个活动但是当我在我的对象中输入一个新的字符串列表时,该对象(现在包括一个列表)是不会被传递给其他活动。
这是我的数据类”
package com.example.user.shoppy.models;
import android.os.Parcel;
import android.os.Parcelable;
import android.support.annotation.NonNull;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class ProductModel implements Parcelable {
String product_name, description, price, currency, location, userId, image,
product_Id,featuredImage;
List<String> imagesNames;
public ProductModel() {
}
// this constructor is getting all the string variables
public ProductModel(String product_Id, String product_name, String description, String price, String currency, String userId, String location) {
this.product_name = product_name;
this.description = description;
this.price = price;
this.currency = currency;
this.location = location;
this.userId = userId;
this.product_Id = product_Id;
}
// this constructor is getting all the string variables but also an list
public ProductModel(String product_id, String product_name, String des, String price, String currency, String userId, String location, String featuredImage, List imagesNames) {
this.product_name = product_name;
this.description = des;
this.price = price;
this.currency = currency;
this.location = location;
this.userId = userId;
this.product_Id = product_id;
this.featuredImage = featuredImage;
this.imagesNames = imagesNames;
}
public String getProduct_Id() {
return product_Id;
}
public void setProduct_Id(String product_Id) {
this.product_Id = product_Id;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
public String getProduct_name() {
return product_name;
}
public void setProduct_name(String product_name) {
this.product_name = product_name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getPrice() {
return price;
}
public void setPrice(String price) {
this.price = price;
}
public String getCurrency() {
return currency;
}
public void setCurrency(String currency) {
this.currency = currency;
}
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
public String getFeaturedImage() { return featuredImage; }
public void setFeaturedImage(String featuredImage) { this.featuredImage = featuredImage; }
public List<String> getImagesNames() { return imagesNames; }
public void setImagesNames(List<String> imagesNames) { this.imagesNames = imagesNames; }
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(description);
dest.writeString(product_name);
dest.writeString(price);
dest.writeString(currency);
dest.writeString(location);
dest.writeString(userId);
dest.writeString(image);
dest.writeString(product_Id);
dest.writeString(featuredImage);
dest.writeStringList(imagesNames);
}
public static final Parcelable.Creator<ProductModel> CREATOR = new Creator<ProductModel>() {
@Override
public ProductModel createFromParcel(Parcel source) {
return new ProductModel(source);
}
@Override
public ProductModel[] newArray(int size) {
return new ProductModel[size];
}
};
private ProductModel(@NonNull Parcel in) {
description = in.readString();
product_name = in.readString();
price = in.readString();
currency = in.readString();
location = in.readString();
userId = in.readString();
image = in.readString();
product_Id = in.readString();
featuredImage=in.readString();
in.readList(imagesNames,String.class.getClassLoader());
}
}
这是剩余的代码:
@Override
public void onClick(View v) {
Intent intent = new Intent(mContext, ProductSellingActivity.class);
intent.putExtra("currentProductModel", currentProductModel);
mContext.startActivity(intent);
}
});
现在我的意图接收类
Intent intent=getIntent();
currentProductModel= (ProductModel) intent.getParcelableExtra(ProductSellingActivity.INTENTNAME);
在接收第二个活动的意图时,密钥应该相同。
Intent intent=getIntent();
currentProductModel= (ProductModel) intent.getParcelableExtra("currentProductModel");
尝试这个。
我认为您的ProductModel没有在新的Activity中正确地重新创建。
在您的包裹实施中尝试以下操作:
imagesNames = in.readArrayList(ProductModel.class.getClassLoader());
试试这个;
Bundle bundle=new Bundle();
bundle.putParcelable("currentProductModel","currentProductModel");
intent.putExtras(bundle);
在其他活动中:
Bundle bundle=this.getIntent().getExtras();
CurrentProduct currentProduct=bundle.getParcelable("currentProductModel");
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