How to pass array or arraylist by intent which has unserializable data?

Question

What I want to do is passing DataModel array between Activity by Intent.

DataModel class has Bitmap object and FirebaseVisionLabel object. I found many sites to implement this.

Many people said that DataModel class should implements Serializable or Parceable interface to pass DataModel[] or ArrayList<DataModel>.

So I tried, but the real problem was FirebaseVisionLabel class cannot be serializable. Also, I cannot modify that class because it is firebase library.

How can I pass DataModel array by intent??

Point

Want to pass array or arraylist of my own class by intent.

that class has unserializable object and I cannot modify.

how can I pass or deal with it?

declare your `ArrayList` as static and access and access it using class name — userI, Aug 20 '18 at 09:06

Erselan Khan · Answer 1 · 2018-08-20T08:23:34.780

0

Use Parceable. It works perfect

public class Test implements Parcelable
{
    FirebaseVisionLabel firebaseVisionLabel;
    String testString;

    protected Test(Parcel in) {
        testString = in.readString();
    }

    public static final Creator<Test> CREATOR = new Creator<Test>() {
        @Override
        public Test createFromParcel(Parcel in) {
            return new Test(in);
        }

        @Override
        public Test[] newArray(int size) {
            return new Test[size];
        }
    };

    public FirebaseVisionLabel getFirebaseVisionLabel() {
        return firebaseVisionLabel;
    }

    public void setFirebaseVisionLabel(FirebaseVisionLabel firebaseVisionLabel) {
        this.firebaseVisionLabel = firebaseVisionLabel;
    }

    public String getTestString() {
        return testString;
    }

    public void setTestString(String testString) {
        this.testString = testString;
    }

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

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

After that for passing data through intent

   Test test = new Test();
    test.setTestString("test");
    test.setFirebaseVisionLabel(yourObject);

    Intent intent = new Intent(this, BaseActivity.class);
    intent.putExtra("key", test);
    startActivity(intent);

edited Aug 20 '18 at 08:23

answered Aug 20 '18 at 08:19

Erselan Khan

458
4
12

SEE THIS ERROR `java.lang.RuntimeException: Parcel: unable to marshal value com.google.firebase.ml.vision.label.FirebaseVisionLabel@d7a3ee5` – baeharam Aug 20 '18 at 08:20
I think he asked without serialized or parcelable @Arsalan – Ümañg ßürmån Aug 20 '18 at 08:25
1

no he said that parcelable and serialized not work for him – Erselan Khan Aug 20 '18 at 08:28
@baeharam another way to do this is to make Singleton class and set data on it's object and get data from that object on another activity. – Erselan Khan Aug 20 '18 at 08:33
You guys don't get a point!! My question is FirebaseVisionLabel object cannot be serialized. So, I cannot use Parceable interface, then how can I pass it? It is my question. – baeharam Aug 20 '18 at 08:34
Arsalan, Oh okay my bad!! – Ümañg ßürmån Aug 20 '18 at 08:43
@baeharam make singleton class to hold your firebasevisionlabel object – Erselan Khan Aug 20 '18 at 10:06

score 0 · Answer 2 · answered Aug 20 '18 at 08:24

0

Use the below code to get ArrayList data without Serialized or Parcelable:

Consider,

Intent intent = new Intent(this, your_second_class.class);
intent.putStringArrayListExtra("<your_name_here>", your_list_here);
startActivity(intent);

Then in your second class use:

Intent i = getIntent();  
new_list = i.getStringArrayListExtra("<your_name_here>");

Hope it will work fine.

answered Aug 20 '18 at 08:24

Ümañg ßürmån

8,143
4
21
40

`putStringArrayListExtra` is for `ArrayList`, my goal is to pass `ArrayList`... DataModel is my own class which has Object variable for firebasevisionlabel and bitmap – baeharam Aug 20 '18 at 08:28

score 0 · Answer 3 · answered Aug 20 '18 at 08:59

0

You may use Application class, which can be used in all the screen, activities.

So store array in Application class and used anywhere in app.

answered Aug 20 '18 at 08:59

Parth Suthar

123
4

score 0 · Answer 4 · answered Aug 22 '18 at 21:15

FirebaseVisionLabel doesn't have too many properties. You will need to serialize Label / Confidence /... (anything you care) yourself by creating your own VisionLabelParcelable class.

So far, there are not enough use cases to make ML Kit return a Parcelable FirebaseVisionLabel. Most apps should extract the info they are interested in and pass around if they want.

How to pass array or arraylist by intent which has unserializable data?

4 Answers4