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我目前正在嘗試將我的片段中的一些數據傳遞給一個活動。我傳遞了一些參數,也是一個模型類的數組列表。我已經確定在我傳遞它之前的數組列表不爲空,因爲我能夠打印出日誌中的值。但它在被調用的活動中變爲空。Android getParcelableExtra返回null
下面是模型類:
public class Product implements Parcelable {
String code, id, status, is_expired;
public Product() {}
public Product(String code, String id, String status, String is_expired) {
this.code = code;
this.id = id;
this.status = status;
this.is_expired = is_expired;
}
public Product(Parcel in) {
code = in.readString();
id = in.readString();
status = in.readString();
is_expired = in.readString();
}
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public String getIs_expired() {
return is_expired;
}
public void setIs_expired(String is_expired) {
this.is_expired = is_expired;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(code);
dest.writeString(id);
dest.writeString(status);
dest.writeString(is_expired);
}
public static final Parcelable.Creator<Product> CREATOR = new Parcelable.Creator<Product>() {
public Product createFromParcel(Parcel in) {
return new Product(in);
}
public Product[] newArray(int size) {
return new Product[size];
}
};
}
這裏是主叫方:
intent.putExtra("product", productList);
下面是如何檢索數據:
ArrayList<Product> productList = getIntent().getParcelableExtra("product");
什麼我錯在這裏做什麼?