尝试向arraylist添加5个JSONarrays,但收到此错误
The method add(AllMessageObject) in the type ArrayList<AllMessageObject> is not applicable for the arguments (String)
这里我放置代码将jsonarray添加到arraylist.how来修复它。
for (int j = 0; j < a; j++) {
listdata = new ArrayList<AllMessageObject>();
listdata.add(jsonArray.get(j).toString());
}
AllMessageObject是一个类,这是我对该类的代码。而listdata是我的数组列表ArrayList<AllMessageObject> listdata = null;
我希望这段代码足够了,如果你需要更多我会在这里提供它。
public class AllMessageObject {
// for getting comment
public String message;
public String from_name;
public String message_date;
// for getting picture
public String picture_url;
public Bitmap picturein_bitmap;
// for getting my profile image
public String fromprofile_url;
//public Bitmap fromprofileurl_bitmap;
public String getFromprofile_url() {
return fromprofile_url;
}
public void setFromprofile_url(String fromprofile_url) {
this.fromprofile_url = fromprofile_url;
}
/*public Bitmap getFromprofileurl_bitmap() {
return fromprofileurl_bitmap;
}
public void setFromprofileurl_bitmap(Bitmap fromprofileurl_bitmap) {
this.fromprofileurl_bitmap = fromprofileurl_bitmap;
}*/
public Bitmap getPicturein_bitmap() {
return picturein_bitmap;
}
public void setPicturein_bitmap(Bitmap picturein_bitmap) {
this.picturein_bitmap = picturein_bitmap;
}
public String getPicture_url() {
return picture_url;
}
public void setPicture_url(String picture_url) {
this.picture_url = picture_url;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public String getFrom_name() {
return from_name;
}
public void setFrom_name(String from_name) {
this.from_name = from_name;
}
public String getMessage_date() {
return message_date;
}
public void setMessage_date(String message_date) {
this.message_date = message_date;
}
}
答案 0 :(得分:0)
您正尝试将String
放入AllMessageObject
ArrayList中。此外,每次循环运行时,您都会分配新的ArrayList
,否则将丢失先前添加的值。
所以请尝试这样:
listdata = new ArrayList<String>();
for (int j = 0; j < a; j++) {
listdata.add(jsonArray.get(j).toString());
}