I am trying to pass an ArrayList of Objects between multiple activities in my application. Is it possible to do this using an Intent using the setData() method?
问题:
回答1:
If you want to send an ArrayList of objects then your class must implement the Parcelable or Serializable interface .
See these good tutorials for sending custom object between Activities
http://androidideasblog.blogspot.in/2010/02/passing-list-of-objects-between.html
http://www.anddev.org/novice-tutorials-f8/simple-tutorial-passing-arraylist-across-activities-t9996.html
回答2:
Use below code for pass arraylist in intent.
Intent mIntent = new Intent(FirstActivity.this, SecondActivity.class);
mIntent.putParcelableArrayListExtra("Data", mArraylist);
startActivity(mIntent);
Use below code For get arraylist from Intent.
Bundle bdl = getIntent().getExtras();
mArraylist1 = bdl.getParcelableArrayList("Data");
回答3:
First you need to extend parcelable class in your Object class. Then you can pass it through intent via intent.putParcelableArrayListExtra("PASSING_DATA", data);
here data is arraylist of custom objects.
see Parcelable and Parcelable Tutorial for better undertanding
回答4:
If the objects implement Parcelable you can use the putParcelableArrayList method like this:
Bundle data = new Bundle();
data.putParcelableArrayList("myArrayList", myList);
Intent i = new Intent();
i.putExtra("data", data);
Hope that helps.
回答5:
yes, it is possible... You need to implement Serializable class by your object class.
回答6:
You can make the arraylist static where you are defining it, and only pass the position to the next activity