以下的代码有两处明显的错误,一不小心就会写出如下错误的代码,其中第2个问题调试起来很麻烦:
1 public class AddedBannerInfo implements Parcelable {
2
3 private List<BannerInfo> mBannerInfoList;
4
5 @Override
6 public int describeContents() {
7 return 0;
8 }
9
10 @Override
11 public void writeToParcel(Parcel dest, int flags) {
12 dest.writeList(mBannerInfoList);
13 }
14
15 public static final Parcelable.Creator<AddedBannerInfo>
16 CREATOR = new Parcelable.Creator<AddedBannerInfo>() {
17
18 @Override
19 public AddedBannerInfo createFromParcel(Parcel source) {
20 AddedBannerInfo addedInfo = new AddedBannerInfo();
21
22 source.readList(addedInfo.mBannerInfoList,
23 BannerInfo.class.getClassLoader());
24 return null;
25 }
26
27 @Override
28 public AddedBannerInfo[] newArray(int size) {
29 return new GameCenterAddedBannerInfo[size];
30 }
31 };
32 }
A.第22行,addedInfo.mBannerInfoList为空不能直接将其作为参数,传给source.readList,而应该在之前先构造下:
addedInfo.mBannerInfoList = new ArrayList<BannerInfo>();
B.第24行,返回的竟然一直是null,这个很有可能是stub代码,应修改为:
return addedInfo;