CODEWITHSUNDEEP
androidandroid-intentandroid-activitybundlemultidimensional-array
SibinF
SibinF

Reputation: 385

How to pass a two diamentional array from one activity to another activity?

I have a problem with passing my 2D string array from one activity to another activity I tried some codes...but they show some errors

My string array is: 

String[][] commuterDetails=new String[2][5];

commuterDetails=
{
   { "a", "b","c", "d","e" },
   {"f", "g","h", "i","j" }
};

And I tried some codes

In first Activity

Intent summaryIntent = new Intent(this, Second.class);
Bundle b=new Bundle();
b.putSerializable("Array", commuterDetails);
summaryIntent.putExtras(b);
startActivity(summaryIntent);

In second activity

Bundle b = getIntent().getExtras();
String[][] list_array = (String[][])b.getSerializable("Array");

But it showing error

Caused by: java.lang.ClassCastException: [Ljava.lang.Object;

I am new in android, please help me

Upvotes: 3

Views: 955

Answers (2)

Kapil Vats
Kapil Vats

Reputation: 5515

You may define a custom class which implements Parcelable and contains logic to read and write 2-dimensional-array from/to Parcel. Afterwards, put that parcelable object inside Bundle for transportation.

UPDATE

public class MyParcelable implements Parcelable{

public String[][] strings;

public String[][] getStrings() {
    return strings;
}

public void setStrings(String[][] strings) {
    this.strings = strings;
}

public MyParcelable() {
    strings = new String[1][1];
}

public MyParcelable(Parcel in) {
    strings = (String[][]) in.readSerializable();
}

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

@Override
public void writeToParcel(Parcel dest, int flags) {
    dest.writeSerializable(strings);

}
public static final Parcelable.Creator<MyParcelable> CREATOR = new Parcelable.Creator<MyParcelable>() {

    @Override
    public MyParcelable createFromParcel(Parcel in) {
        return new MyParcelable(in);
    }

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

Upvotes: 1

Mudassar Shaheen
Mudassar Shaheen

Reputation: 1525

make your commuterDetails static and access in other activity like this

FirstActivity.commuterDetails[][]

Upvotes: 0

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