getParcelableArraylist

getParcelableArraylist

脚本:
我有一个闹钟计划在指定的时间运行。每次执行时,我的广播接收器都会触发。
在BroadcastReceiver中,我做了各种检查,最后得到一个Notify类的ArrayList
我在状态栏上显示通知
当用户点击通知时,我会显示一个活动。我需要在活动中使用arraylist在视图上显示它。
下面是示例代码:

public class ReceiverAlarm extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
         ArrayList<Notify> notifications = new ArrayList<Notify>();

         //do the checks, for exemplification I add these values
         notifications.add(new Notify("id1","This is very important"));
         notifications.add(new Notify("id2","This is not so important"));
         notifications.add(new Notify("id3","This is way too mimportant"));

         NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
         //init some values from notificationManager
         Intent intentNotif = new Intent(context, NotificationViewer.class);
                intentNotif.putParcelableArrayListExtra("list", notifications);
         PendingIntent contentIntent = PendingIntent.getActivity(context, 0, intentNotif, 0);


         Notification notification = new Notification(icon, text, when);
         notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
         notificationManager.notify(NOTIFICATION_ID, notification);
    }


   public class NotificationViewer extends Activity {


            @Override
            protected void onCreate(Bundle savedInstanceState) {
                    super.onCreate(savedInstanceState);
                    setContentView(R.layout.notification_viewer);

                   ArrayList<Notify> testArrayList = null;

        Bundle b = getIntent().getExtras();
        if (b != null) {
            testArrayList = b.getParcelableArrayList("list");
        }
    }


public class Notify implements Parcelable {

    public Notify(Parcel in) {
        readFromParcel(in);
    }

    @SuppressWarnings("rawtypes")
    public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {
        public Notify createFromParcel(Parcel in) {
            return new Notify(in);
        }

        public Notify[] newArray(int size) {
            return new Notify[size];
        }
    };

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(id);
        dest.writeString(text);
    }

    private void readFromParcel(Parcel in) {
        id = in.readString();
        text = in.readString();
    }

    public Notify(String id, String text) {
        super();
        this.id = id;
        this.text = text;
    }

    /** The id. */
    public String id;

    /** Notification text to be displayed. */
    public String text;

    @Override
    public int describeContents() {
        return 0;
    }

}

在notificationactivity的testarraylist=b.getParcelableArraylist(“list”)上,我得到以下错误:
E/AndroidRuntime(14319): java.lang.RuntimeException: Unable to start activity

componentinfo{notificationviewer}:java.lang.runtimeexception:包
android.os.parcel@4050f960:在
偏移量124
如你所见,从《圣经》中我说我需要把我的东西包装起来。也许我在里面做错了什么,但是…我不知道怎么修。我做错什么了?

最佳答案

NotificationViewer活动获取值中,如下所示:

ArrayList<Notify> testArrayList = getIntent().getParcelableArrayListExtra("list");

您正在使用putParcelableArrayListExtra()放置值,因此需要使用
getParcelableArrayListExtra()而不是getParcelableArrayList()

07-26 07:03