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How to send objects through bundle

Asked 2010-11-22T20:25:14.703
122

I need to pass a reference to the class that does the majority of my processing through a bundle.

The problem is it has nothing to do with intents or contexts and has a large amount of non-primitive objects. How do I package the class into a parcelable/serializable and pass it to a startActivityForResult?

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1 Answer

7

One More way to send objects through bundle is by using bundle.putByteArray
Sample code

public class DataBean implements Serializable {
private Date currentTime;

public setDate() {
    currentTime = Calendar.getInstance().getTime();
 }

public Date getCurrentTime() {
    return currentTime;
 }
}

put Object of DataBean in to Bundle:

class FirstClass{
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Your code...

//When you want to start new Activity...
Intent dataIntent =new Intent(FirstClass.this, SecondClass.class);
            Bundle dataBundle=new Bundle();
            DataBean dataObj=new DataBean();
            dataObj.setDate();
            try {
                dataBundle.putByteArray("Obj_byte_array", object2Bytes(dataObj));

            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();

            }

            dataIntent.putExtras(dataBundle);

            startActivity(dataIntent);
}

Converting objects to byte arrays

/**
 * Converting objects to byte arrays
 */
static public byte[] object2Bytes( Object o ) throws IOException {
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      ObjectOutputStream oos = new ObjectOutputStream( baos );
      oos.writeObject( o );
      return baos.toByteArray();
    }

Get Object back from Bundle:

class SecondClass{
DataBean dataBean;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Your code...

//Get Info from Bundle...
    Bundle infoBundle=getIntent().getExtras();
    try {
        dataBean = (DataBean)bytes2Object(infoBundle.getByteArray("Obj_byte_array"));
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (ClassNotFoundException e) {
        // TODO Aut
answered 2012-12-11T11:18:28.413

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