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POHow to use key and values from a hashmap in ArrayAdapter?
 

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  1. POHow to use key and values from a hashmap in ArrayAdapter?
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    <p>I have a hashmap with key, value pairs example :-</p> <p>(msisdn,value)</p> <p>43664xxxxxxx,2 43665xxxxxxx,3</p> <p>now I want to display this information in a ListView but I don't know how to feed the data to an ArrayAdapter from the Hashmap ?</p> <p>HERE IS MY ADAPTER, note I want to replace myList with data from the Hashmap a concatentated key+value.</p> <ol> <li><p>Pass the above hashmap to the adapter, replacing myList with the hashmap</p> <p><CODE> adapter=new ArrayAdapter(this,android.R.layout.simple_list_item_1,myList); setListAdapter(adapter); </CODE></p></li> </ol> <p>thanks</p> <p>Without HASHMAP </p> <pre><code>packagelistmodified.org; importjava.util.Arrays; importjava.util.ArrayList; importjava.util.HashMap; importjava.util.List; importjava.util.Map; importandroid.app.ListActivity; importandroid.os.Bundle; importandroid.os.Handler; importandroid.os.Message; importandroid.view.View; importandroid.widget.AdapterView; importandroid.widget.ArrayAdapter; importandroid.widget.ListView; importandroid.widget.TextView; importandroid.widget.AdapterView.OnItemLongClickListener; importandroid.view.GestureDetector.OnGestureListener; importandroid.view.GestureDetector; importandroid.view.MotionEvent; importandroid.widget.Toast; publicclasslistmodifiedextendsListActivityimplements OnGestureListener{ publicArrayList&lt;String&gt;myList=new ArrayList&lt;String&gt;(Arrays.asList(items)); privateTextViewselection;//MAIN.xml publicArrayAdapter&lt;String&gt;adapter;//myadapter publicOnItemLongClickListeneritemDelListener; privateGestureDetectorgestureScanner; publicintlongClickedItem=0;//checkiflongClickisselectedor not privateStringitemSelected;//fordeletefunction privatestaticfinalbyteUPDATE_LIST=100; publicAdapterView&lt;?&gt;parent;//usedbyOnLitemLongClickListener publicintposition; //tieitemstoanarraylistcalledmyList publicstaticString[]items={"lorem","ipsum","dolor", "sit","amet", "consectetuer","adipiscing","elit","morbi","vel", "ligula","vitae","arcu","aliquet","mollis", "etiam","vel","erat","placerat","ante", "porttitor","sodales","pellentesque","augue","purus"}; @Override publicvoidonCreate(Bundleicicle){ super.onCreate(icicle); OnItemLongClickListeneritemDelListener=new OnItemLongClickListener(){ //@Override publicbooleanonItemLongClick(AdapterView&lt;?&gt;parent,Viewarg1, intposition,longarg3){ //TODOAuto-generatedmethodstub itemSelected=parent.getItemAtPosition(position).toString(); adapter.remove(itemSelected); Toast.makeText(listmodified.this,"positionis:"+position, Toast.LENGTH_SHORT).show(); myList.remove(this);//removethecurrentobject,positionthrows anexception adapter.notifyDataSetChanged(); returnfalse; }}; setContentView(R.layout.main); //DEFINEMYOWNVIEWTIETOARRAYLISTmyListWHICHCONTAINSSTRINGS adapter=new ArrayAdapter&lt;String&gt;(this,android.R.layout.simple_list_item_1,myList); setListAdapter(adapter); //AVIEWOFTHELISTNECESSARYFORDELETION selection=(TextView)findViewById(R.id.selection); //PARTOFLONGCLICKSELECTEDCODE //CALLSIMPLEMENTEDMETHODS-detectgesturescheckingmylistitems gestureScanner=newGestureDetector(this); getListView().setOnTouchListener(newView.OnTouchListener(){ @Override publicbooleanonTouch(Viewv,MotionEventevent){ returngestureScanner.onTouchEvent(event); } }); //UPDATEVIEWDELETEWHENONLONGCLICKISPRESSED getListView().setOnItemLongClickListener(itemDelListener); } //LISTITEMPRESSCHECKING publicvoidonListItemClick(ListViewparent,Viewv, intposition,longid){ selection.setText(myList.get(position)); //checktoseeifLONGCLICKISPRESSED if(longClickedItem!=-1){ Toast.makeText(listmodified.this,"Ashortclickdetected", Toast.LENGTH_SHORT).show(); } longClickedItem=0; } //IMPLEMENTEDBYGESTURE @Override publicbooleanonDown(MotionEventarg0){ //TODOAuto-generatedmethodstub returnfalse; } @Override publicbooleanonFling(MotionEvente1,MotionEvente2,float velocityX, floatvelocityY){ //TODOAuto-generatedmethodstub returnfalse; } //CHECKSONLONGPRESSEVENTSSETLONGPRESSTO-1, //COOLICANUSETHISTOSEEIFALONGCLICKWASSELECTEDLATERON @Override publicvoidonLongPress(MotionEvente){ //TODOAuto-generatedmethodstub Toast.makeText(listmodified.this,"Alongclickdetected", Toast.LENGTH_SHORT).show(); if(e.getAction()==MotionEvent.ACTION_DOWN) { longClickedItem=-1; } } @Override publicbooleanonScroll(MotionEvente1,MotionEvente2,float distanceX, floatdistanceY){ //TODOAuto-generatedmethodstub returnfalse; } @Override publicvoidonShowPress(MotionEvente){ //TODOAuto-generatedmethodstub } @Override publicbooleanonSingleTapUp(MotionEvente){ //TODOAuto-generatedmethodstub returnfalse; } privateHandlerupdateListHandler=newHandler(){ @Override publicvoidhandleMessage(Messagemsg){ switch(msg.what){ caseUPDATE_LIST: intposition=msg.arg1; myList.remove(position); adapter.notifyDataSetChanged(); Toast.makeText(listmodified.this,"OnSingleTapUp", Toast.LENGTH_SHORT).show(); break; } ; }; }; } </code></pre>
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