作为我最后一个问题的后续：在活动之间传递 Arraylist？使用 Parcelable
我现在正试图通过 Parcelable 传递我的 ArrayList。但是，当它从其他活动中获取时，它会返回 null。我似乎无法弄清楚为什么。我有以下...
结果列表.java
public class ResultsList extends ArrayList<SearchList> implements Parcelable {
/**
*
*/
private static final long serialVersionUID = -78190146280643L;
public ResultsList(){
}
public ResultsList(Parcel in){
readFromParcel(in);
}
@SuppressWarnings({ "rawtypes" })
public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {
public ResultsList createFromParcel(Parcel in) {
return new ResultsList(in);
}
public Object[] newArray(int arg0) {
return null;
}
};
private void readFromParcel(Parcel in) {
this.clear();
//First we have to read the list size
int size = in.readInt();
//Reading remember that we wrote first the Name and later the Phone Number.
//Order is fundamental
for (int i = 0; i < size; i++) {
String title = in.readString();
String Des = in.readString();
String message = in.readString();
SearchList c = new SearchList(title,Des,link);
this.add(c);
}
}
public int describeContents() {
return 0;
}
public void writeToParcel(Parcel dest, int flags) {
int size = this.size();
//We have to write the list size, we need him recreating the list
dest.writeInt(size);
//We decided arbitrarily to write first the Name and later the Phone Number.
for (int i = 0; i < size; i++) {
SearchList c = this.get(i);
dest.writeString(c.gettitle());
dest.writeString(c.getDescription());
dest.writeString(c.getmessage());
}
}
}
搜索列表.java
public class SearchList {
private String title;
private String description;
private String message;
public SearchList(String name, String phone, String mail) {
super();
this.title = name;
this.description = phone;
this.message = mail;
}
public String gettitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getmessage() {
return message;
}
public void setmessage(String link) {
this.message = message;
}
}
listOfResults在代码中声明为ResultsList listOfResults = new ResultsList();并在前面填写它然后发送...
Intent intent = new Intent(this ,newthing.class);
Bundle b = new Bundle();
b.putParcelable("results", listOfResults);
startActivityForResult(intent,0);
接收...
Bundle extras = getIntent().getExtras();
ResultsList results = extras.getParcelable("results");
我想指出我正在通过检查进入 Bundle 的 Arraylist 的 size() 然后它出来来测试这个 null 的东西。它运行良好，结果为空。