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POSaving the contents of the ListView after drag and drop
 

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  1. POSaving the contents of the ListView after drag and drop
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    <p>Initially I am having a simple ListView Activity that consists of few formulae and also a Button at the top.Whenever I click that Button it takes me to another Activity,where in I am dragging and dropping the contents of the ListView.This Activity also consists a Button and whenever I click this Button the order of the contents which I have changed in my drag and drop Activity has to be saved in my initial Activity.How do I save the contents of ListView which I have changed in my drag and drop to my initial Activity?</p> <p>Code:My Initial Activity and my next Activity is drag and drop. </p> <pre><code> public class FormulaActivity extends Activity implements OnClickListener { private ListView listview; private ArrayList&lt;ListContents&gt; mListItem; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main1); ImageButton btn=(ImageButton)findViewById(R.id.imageButton00); btn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Intent i=new Intent(FormulaActivity.this,DragNDropListActivity.class); startActivity(i); } }); listview = (ListView) findViewById(R.id.list_view); mListItem = ListContents.getItems(); listview.setAdapter(new ListAdapter(FormulaActivity.this, R.id.list_view, mListItem)); } @Override public void onClick(View v) { } // ***ListAdapter*** private class ListAdapter extends ArrayAdapter&lt;ListContents&gt; { private ArrayList&lt;ListContents&gt; mList; public ListAdapter(Context context, int textViewResourceId, ArrayList&lt;ListContents&gt; list) { super(context, textViewResourceId, list); this.mList = list; } public View getView(int position, View convertView, ViewGroup parent) { View view = convertView; try { if (view == null) { LayoutInflater vi = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); view = vi.inflate(R.layout.list, null); } final ListContents listItem = mList.get(position); if (listItem != null) { // setting list_item views ((TextView) view.findViewById(R.id.tv_name)) .setText(listItem.getName()); view.setOnClickListener(new OnClickListener() { public void onClick(View arg0) { // --clickOnListItem Intent myIntent = new Intent(FormulaActivity.this, Activity2.class); myIntent.putExtra("NAME", listItem.getName()); startActivity(myIntent); //finish(); } }); } } catch (Exception e) { Log.i(FormulaActivity.ListAdapter.class.toString(), e.getMessage()); } return view; } } </code></pre> <p>}</p> <hr> <pre><code>public class DragNDropListActivity extends ListActivity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.dragndroplistview); Button mbtn=(Button)findViewById(R.id.button12); mbtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Intent i=new Intent(DragNDropListActivity.this,FormulaActivity.class); startActivity(i); finish(); } }); ArrayList&lt;String&gt; content = new ArrayList&lt;String&gt;(mListContent.length); for (int i=0; i &lt; mListContent.length; i++) { content.add(mListContent[i]); } setListAdapter(new DragNDropAdapter(this, new int[]{R.layout.dragitem}, new int[]{R.id.TextView01}, content));//new DragNDropAdapter(this,content) ListView listView = getListView(); if (listView instanceof DragNDropListView) { ((DragNDropListView) listView).setDropListener(mDropListener); ((DragNDropListView) listView).setRemoveListener(mRemoveListener); ((DragNDropListView) listView).setDragListener(mDragListener); } } private DropListener mDropListener = new DropListener() { public void onDrop(int from, int to) { ListAdapter adapter = getListAdapter(); if (adapter instanceof DragNDropAdapter) { ((DragNDropAdapter)adapter).onDrop(from, to); getListView().invalidateViews(); } } }; private RemoveListener mRemoveListener = new RemoveListener() { public void onRemove(int which) { ListAdapter adapter = getListAdapter(); if (adapter instanceof DragNDropAdapter) { ((DragNDropAdapter)adapter).onRemove(which); getListView().invalidateViews(); } } }; private DragListener mDragListener = new DragListener() { int backgroundColor = 0xe0103000; public void onDrag(int x, int y, ListView listView) { // TODO Auto-generated method stub } public void onStartDrag(View itemView) { itemView.setVisibility(View.INVISIBLE); itemView.setBackgroundColor(backgroundColor); ImageView iv = (ImageView)itemView.findViewById(R.id.ImageView01); if (iv != null) iv.setVisibility(View.VISIBLE); } public void onStopDrag(View itemView) { itemView.setVisibility(View.VISIBLE); itemView.setBackgroundColor(backgroundColor); ImageView iv = (ImageView)itemView.findViewById(R.id.ImageView01); if (iv != null) iv.setVisibility(View.VISIBLE); } }; private static String[] mListContent={"BMI", "Infuusberekening: druppels per minuut", "Infuusberekening: resterende tijd","Injecteren: IE-aanduiding", "Injecteren: mg/ml-aanduiding", "Injecteren: %-aanduiding", "Lichaamsoppervlakte", "Medicatieberekening voor gewicht", "Oplossen: Hoeveelheid percentage", "Oplossen: Hoeveelheid promillage", "Oplossen: Percentage in oplossing", "Oplossen: Promillage in oplossing", "PCA-pomp", "Procenten: delen", "Procenten: percentage", "Promillage: delen", "Promillage: percentage", "Spuitenpomp", "Verdunnen", "Voedingspomp: ml per uur", "Voedingspomp: resterende tijd", "Zuurstofberekening"}; </code></pre> <p>}</p>
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    1. USVivek Kalkur
    1. USVivek Kalkur
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    1. COCan you share more informations? You can re-sort your data when drop event calls. More info? put code or more details...
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      1. USPankaj Kumar
    2. COThis link will be helpful to you http://stackoverflow.com/questions/7136386/adding-items-to-expandable-list-view-by-drag-and-drop-android
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    3. CO@pankaj:I think the code mentioned above, might help you to solve my problem.
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      1. USVivek Kalkur
 

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