Android ListView and fragment, similar to the implementation of a certain e-commerce, can be used to get, detailed labeling for the novice

Reprint please indicate the source of Wang 亟亟 's Daniel Road

An implementation similar to that of an e-commerce allows novices to understand how the parameters between activity and fragment interact.

Package Structure:

Post-run effects


Analysis:
The left ListView can be dragged up and down, and clicking on a different item will affect the content on the right fragment.

Nonsense not much to say, on the code (detailed callout)
Mainactivity

 Public  class mainactivity extends fragmentactivity  implements  Onitemclicklistener {            /*listview Fill with * /    PrivateString[] STRs = {"Common Classification","Apparel underwear","Pet","mobile","Home Appliances","Digital","Computer Office","A care and make -up","book","Shoe Boots"};PrivateListView ListView;PrivateMyadapter adapter;PrivateContentfragment myfragment;/* Number of digits of the selected item * /     Public Static intMposition;@Override    protected void onCreate(Bundle savedinstancestate) {Super. OnCreate (Savedinstancestate); Setcontentview (R.layout.activity_main);/ * Initialize * /Initview (); }/** * Initialize view * /    Private void Initview() {//Matching controlsListView = (ListView) Findviewbyid (R.id.listview);//Pass the referenceadapter =NewMyadapter ( This, STRs); Listview.setadapter (adapter);//Monitoring EventsListview.setonitemclicklistener ( This);//Create Myfragment ObjectMyfragment =NewContentfragment ();        Fragmenttransaction fragmenttransaction = Getsupportfragmentmanager (). BeginTransaction (); Fragmenttransaction.replace (R.id.fragment_container, myfragment);//Pass value to Myfragment by bundleBundle bundle =NewBundle ();        Bundle.putstring (Contentfragment.tag, strs[mposition]);        Myfragment.setarguments (bundle);    Fragmenttransaction.commit (); }@Override     Public void Onitemclick(adapterview<?> parent, view view,intPositionLongID) {//Get current positionMposition = position;//Even refresh adapterAdapter.notifydatasetchanged (); for(inti =0; i < strs.length; i++) {myfragment =NewContentfragment ();            Fragmenttransaction fragmenttransaction = Getsupportfragmentmanager (). BeginTransaction ();            Fragmenttransaction.replace (R.id.fragment_container, myfragment); Bundle bundle =NewBundle ();            Bundle.putstring (Contentfragment.tag, strs[position]);            Myfragment.setarguments (bundle);        Fragmenttransaction.commit (); }    }}

Contentfragment

 Public  class contentfragment extends Fragment {     Public Static FinalString TAG ="Myfragment";PrivateString str;@Override     PublicViewOncreateview(Layoutinflater inflater, ViewGroup container, Bundle savedinstancestate) {//TODO auto-generated method stubView view = Inflater.inflate (R.layout.myfragment,NULL); TextView Tv_title = (TextView) View.findviewbyid (r.id.tv_title);//Get Datastr = getarguments (). getString (TAG); Tv_title.settext (str);returnView }}

The adapter for the ListView (simple optimizations have been made)

 Public  class myadapter extends baseadapter {    PrivateContext context;PrivateString[] strings; Public Static intMposition; Public Myadapter(context context, string[] strings) { This. Context =context; This. strings = Strings; }@Override     Public int GetCount() {//TODO auto-generated method stub        returnStrings.length; }@Override     PublicObjectGetItem(intPosition) {//TODO auto-generated method stub        returnStrings[position]; }@Override     Public Long Getitemid(intPosition) {//TODO auto-generated method stub        returnPosition }@Override     PublicViewGetView(intPosition, View Convertview, ViewGroup parent) {Viewholder viewholder=NewViewholder ();if(convertview==NULL{Convertview = Layoutinflater.from (context). Inflate (R.layout.listview_item,NULL);             viewholder.tv= (TextView) Convertview.findviewbyid (r.id.tv);             Mposition = position; ViewHolder.tv.setText (Strings[position]);if(Position = = mainactivity.mposition)                {Convertview.setbackgroundresource (R.DRAWABLE.TONGCHENG_ALL_BG01); }Else{Convertview.setbackgroundcolor (Color.parsecolor ("#f4f4f4"));          } convertview.settag (Viewholder); }Else{Viewholder = (Viewholder) convertview.gettag (); } viewHolder.tv.setText (Strings[position]);if(Position = = mainactivity.mposition)            {Convertview.setbackgroundresource (R.DRAWABLE.TONGCHENG_ALL_BG01); }Else{Convertview.setbackgroundcolor (Color.parsecolor ("#f4f4f4")); }returnConvertview; }Private Static  class viewholder {TextView TV; }}

Main layout file:

<?xml version= "1.0" encoding= "Utf-8"?><linearlayout xmlns:android="Http://schemas.android.com/apk/res/android"  Android:layout_width="Match_parent"android:layout_height="Match_parent" android:orientation="vertical" >                <view  android:layout_ Width  = "match_parent"  android:layout_height< /span>= "1DP"  android:background  = "#cdcdcd" />     <textview  android:layout _width  = "match_parent"  android:layout_height  = "40DP"  android:background  = "#ededed"  android:gravity  =         "center"  android:text  = "all kinds"  android:textcolor  =" #BF3EFF " android:textsize  = "17SP" />     <linearlayout  android: Layout_width  = "match_parent"  android:layout_ Height  = "match_parent"  android:background
      = "#fbfbfb"  android:orientation  = "horizontal" ;         <listview  android:id= "@+id/listview"  android:layout_width  = "0DP"  android:layout_height  =" match_parent " android:scrollbars  ="            None " android:layout_weight  =" 1.0 " android:background  = "#f4f4f4" />         <framelayoutandroid:id="@+id/fragment_container"android:layout_width ="0DP"android:layout_height="Match_parent"android:layout_weight=" 3.0 " />                                                    </linearlayout></linearlayout>

Because, belongs to the novice to understand the first 2 things. So there is not too much explanation, the comments are very thin (self-think), also suitable for lazy ghosts to use.

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Android ListView and fragment, similar to the implementation of a certain e-commerce, can be used to get, detailed labeling for the novice