AndroidのIntent之传递List

A跳到B

1.A——>B(其中intros是一个List<Onject>)

intent不能传递List<Object>数据，但是可以传递ArrayList，可以先用ArrayList添加List<Object>，在put出去

Intent intent = new Intent(NearMeActivity.this,FullMapActivity.class);
                    intent.setAction("FROM_NEARMEACTIVITY");//列表GP
                    ArrayList array = new ArrayList();
                    array.add(intros);
                    intent.putCharSequenceArrayListExtra("intros", array);
                    startActivity(intent);

2.B中解析

ArrayList array = intent.getCharSequenceArrayListExtra("intros");
这样先得到array，然后再从array获取List<Object>

if(intent.getAction().equals("FROM_NEARMEACTIVITY")){
            ArrayList array = intent.getCharSequenceArrayListExtra("intros");
            intros = (List<ActivityIntro>)array.get(0);
            geoList = new ArrayList<OverlayItem>();
            for(ActivityIntro intro:intros){
                String[] ll = intro.getActivityLatlgn().split(",");
                double mLat1 = Double.parseDouble(ll[1]);
                double mLon1 = Double.parseDouble(ll[0]);
                GeoPoint geoPoint = new GeoPoint((int) (mLat1 * 1E6), (int) (mLon1 * 1E6));
                geoList.add(new OverlayItem(geoPoint,intro.getActivityTitle(),intro.getActivityAdress()));
                Log.e(intro.getActivityTitle(), intro.getActivityLatlgn());
            }

3.实体类(必须序列化)

public class ActivityIntro implements Serializable{

    //attribute

        .....

        //getter


        //setter

}