使用WritetypedArray和readtypedArray读写您的阵列到包裹
读
tokens = in.createTypedArray(Tokens.CREATOR);
写
in.writeTypedArray(tokens, flags);
题
我试图实现包裹而不是连续化,因为它应该更有效。从我的主动脉中,我想将消息对象传递给另一个活动,我的类消息包含其他类。如果我遇到这个错误,我相信我会遇到更多的错误,但是现在,当我尝试运行我的应用程序时,我会得到
这是我的消息类:
import java.util.ArrayList;
import android.os.Parcel;
import android.os.Parcelable;
public class Message implements Parcelable {
int id;
int space_id;
String text;
String html;
String created_at;
int[] comments;
boolean is_liked;
int[] liked_by;
int[] starred_by;
boolean is_starred;
boolean is_followed;
int[] followed_by;
ArrayList<AttachmentsData> attachments;
String url;
int[] tags;
boolean is_system;
public User created_by;
public Permissions persmissions;
public Embed embed;
public Tokens[] tokens;
/** Parcelable **/
public Message(Parcel in) {
readFromParcel(in);
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(id);
dest.writeInt(space_id);
dest.writeString(text);
dest.writeString(html);
dest.writeString(created_at);
dest.writeIntArray(comments);
dest.writeInt(is_liked ? 1 : 0);
dest.writeIntArray(liked_by);
dest.writeIntArray(starred_by);
dest.writeInt(is_starred ? 1 : 0);
dest.writeInt(is_followed ? 1 : 0);
dest.writeIntArray(followed_by);
dest.writeList(attachments);
dest.writeString(url);
dest.writeIntArray(tags);
dest.writeInt(is_system ? 1 : 0);
dest.writeParcelable(created_by, flags);
dest.writeParcelable(persmissions, flags);
dest.writeParcelable(embed, flags);
dest.writeParcelableArray(tokens, flags);
}
private void readFromParcel(Parcel in) {
id = in.readInt();
space_id = in.readInt();
text = in.readString();
html = in.readString();
created_at = in.readString();
//in.readIntArray(comments);
comments = in.createIntArray();
is_liked = in.readInt() == 0;
//in.readIntArray(liked_by);
liked_by = in.createIntArray();
//in.readIntArray(starred_by);
starred_by = in.createIntArray();
is_starred = in.readInt() == 0;
is_followed = in.readInt() == 0;
//in.readIntArray(followed_by);
followed_by = in.createIntArray();
in.readList(attachments, AttachmentsData.class.getClassLoader());
url = in.readString();
//in.readIntArray(tags);
tags = in.createIntArray();
is_system = in.readInt() == 0;
created_by = in.readParcelable(User.class.getClassLoader());
persmissions = in.readParcelable(Permissions.class.getClassLoader());
embed = in.readParcelable(Embed.class.getClassLoader());
tokens = in.readParcelable(Tokens.class.getClassLoader();
}
public static final Parcelable.Creator<Message> CREATOR = new Parcelable.Creator<Message>() {
public Message createFromParcel(Parcel in) {
return new Message(in);
}
public Message[] newArray(int size) {
return new Message[size];
}
};
/** Getters and setters, I'll spare you these **/
}
这是我遇到的错误:
致命例外:main java.lang.runtimeException:无法启动活动componentInfo {com.example.incentive.incentive/com.example.incentive.comments}:java.lang.classcastexexception:android.os.os.os.os.parcelcelable []不能是com。 example.incentive.messagemodel.tokens [] at android.app.acpitivitythread.performlaunchactivity(activityThread.java:1967)atroid.app.App.App.acptivitythread.handlelainchread.handlelaunchacnactivity(activityThread.java.java:1992:1992) 。 137)在android.app.act.activitythread.main(activityThread.java:4441)java.lang.reflect.method.method.invokenative(本机方法)at Java.lang.reflect.reflect.method.method.invoke.invoke(method.java:511) 。 (本机方法)由以下原因引起: java:94)at com.example.incentive.messagemodel.message。 。 (parcel.java:204)atnoid.os.bundle.unparcel(bundle.java:223)at android.os.bundle.getParcelable(bundle.java:1158)at com.example.incample.incente.incenter.incenter.incentive.comments.oncreate.oncreate(评论。 java:67) at android.app.Activity.performCreate(Activity.java:4465) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1931) . ..更多
我认为现在相关的是:
引起的:
因此,我可能做错了:tokens = in.ReadParcelable(tokens.class.getClassLoader();
这是我的令牌级:
import android.os.Parcel;
import android.os.Parcelable;
public class Tokens implements Parcelable {
String type;
String value;
int start;
int end;
/** Parcelable related **/
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(type);
dest.writeString(value);
dest.writeInt(start);
dest.writeInt(end);
}
private Tokens(Parcel in) {
type = in.readString();
value = in.readString();
start = in.readInt();
end = in.readInt();
}
public static final Parcelable.Creator<Tokens> CREATOR = new Parcelable.Creator<Tokens>() {
public Tokens createFromParcel(Parcel in) {
return new Tokens(in);
}
public Tokens[] newArray(int size) {
return new Tokens[size];
}
};
/** Getters and setters **/
}
我整个下午都在搜索过,我看不到找到如何正确执行的操作。有人知道吗?
解决方案
使用WritetypedArray和readtypedArray读写您的阵列到包裹
读
tokens = in.createTypedArray(Tokens.CREATOR);
写
in.writeTypedArray(tokens, flags);
其他提示
尝试这个...
代替
tokens = in.readParcelable(Tokens.class.getClassLoader();
和
tokens = in.readParcelableArray(Tokens.class.getClassLoader());
您正在编写包裹式阵列,但将其阅读为包裹