Better Way To Pass Data Between Activities In Android

In my application I am fetching data from JavaScript, as it is not possible to return the data as an array or object, I am returning it as a String. Now to organize the data I am

Solution 1:

Implement the Parcelable interface in your custom object and transmit it via an Intent.

Here is an example of a Parcelable object.

publicclassMyObjectimplementsParcelable {

    privateStringsomeString=null;
    privateintsomeInteger=0;

    publicMyObject() {
        // perform initialization if necessary
    }

    privateMyObject(Parcel in) {
        someString = in.readString();
        someInteger = in.readInt();
    }

    publicstaticfinal Parcelable.Creator<MyObject> CREATOR =
            newParcelable.Creator<MyObject>() {

        @Overridepublic MyObject createFromParcel(Parcel source) {
            returnnewMyObject(source);
        }

        @Overridepublic MyObject[] newArray(int size) {
            returnnewMyObject[size];
        }

    };

    // Getters and setters@OverridepublicintdescribeContents() {
        return0;
    }

    @OverridepublicvoidwriteToParcel(Parcel dest, int flags) {
        dest.writeString(someString);
        dest.writeInt(someInteger);
    }

}

Here is what happens. If you implement the Parcelable interface you have to create a private constructor which takes a Parcel as a parameter. That Parcel holds all the serialized values.

You must implement the nested class Parcelable.Creator with the name CREATOR as this is going to be called by Android when recreating your object.

The method describeContents() is only of use in special cases. You can leave it as it is with a return value of 0.

The interesting action happens in writeToParcel() where you, as the name tells, write your data to a Parcel object.

Now you can just add your custom object directly to an Intent like in this example.

MyObjectmyObject=newMyObject();
Intenti=newIntent();
i.setExtra("MY_OBJECT", myObject);
// implicit or explicit destination declaration
startActivity(i);

Solution 2:

you can use Application class present in Android to pass data between activities.

here is a good link..http://www.helloandroid.com/tutorials/maintaining-global-application-state