Android Analog chat interface---adapted the first line of code

<span id="Label3"></p><p><p>Main interface</p></p><p><p></p></p><p><?xml version= "1.0" encoding= "utf-8"?><br><linearlayout xmlns:android= "http://schemas.android.com/apk/res/android"<br>Android:layout_width= "match_parent"<br>android:layout_height= "match_parent"<br>Android:background= "#d8e0e8"<br>android:orientation= "vertical" ><br> <br><listview<br>Android:id= "@+id/msg_list_view"<br>Android:layout_width= "match_parent"<br>android:layout_height= "0dp"<br>android:layout_weight= "1"<br>android:divider= "#000" ></ListView><br> <br><linearlayout<br>Android:layout_width= "match_parent"<br>android:layout_height= "wrap_content"<br>><br> <br><edittext<br>Android:id= "@+id/input_text"<br>Android:layout_width= "0dip"<br>android:layout_weight= "1"<br>android:layout_height= "wrap_content"<br>android:hint= "please Enter the chat content"/><br> <br><button<br>Android:id= "@+id/send"<br>Android:layout_width= "wrap_content"<br>android:layout_height= "wrap_content"<br>android:text= "send" ></Button><br> <br> <br> <br></LinearLayout><br> </p><p><p></LinearLayout></p></p><p><p></p></p><p><p>Message Item</p></p><p><?xml version= "1.0" encoding= "utf-8"?><br><linearlayout xmlns:android= "http://schemas.android.com/apk/res/android"<br>Android:layout_width= "match_parent"<br>android:layout_height= "match_parent"<br>android:orientation= "vertical"<br>android:padding= "10dp" ><br> <br><linearlayout<br>Android:id= "@+id/left_layout"<br>Android:layout_width= "wrap_content"<br>android:layout_height= "wrap_content"<br>android:layout_gravity= "left"<br>android:background= "@drawable/message_left" ><br> <br><textview<br>Android:id= "@+id/left_msg"<br>Android:layout_width= "wrap_content"<br>android:layout_height= "wrap_content"<br>android:layout_gravity= "center"<br>android:layout_margin= "10dip"<br>Android:textcolor= "#fff"/><br></LinearLayout><br> <br> <br><linearlayout<br>Android:id= "@+id/right_layout"<br>Android:layout_width= "wrap_content"<br>android:layout_height= "wrap_content"<br>android:layout_gravity= "right"<br>android:background= "@drawable/message_right" ><br> <br><textview<br>Android:id= "@+id/right_msg"<br>Android:layout_width= "wrap_content"<br>android:layout_height= "wrap_content"<br>android:layout_gravity= "center"<br>android:layout_margin= "10dip"<br>Android:textcolor= "#fff"/><br></LinearLayout><br> <br> <br> </p><p><p></LinearLayout></p></p><p><p></p></p><p><p>Message class</p></p><p><p></p></p><p><p>Package com.example.thingking_in_android;</p></p><p><p>Message class<br>public class MSG {<br>public static Boolean flag=true;<br><br>public static final int type_received=0;<br><br>public static final int type_sent=1;<br><br>Private String content;<br>private int type;<br>Public String getcontent () {<br>Return content;<br>}<br>public void SetContent (String Content) {<br>This.content = content;<br>}<br>public int GetType () {<br>Return type;<br>}<br>public void SetType (int Type) {<br>This.type = type;<br>}<br>Public MSG (String content, int Type) {<br>Super ();<br>This.content = content;<br>This.type = type;<br>}<br><br><br><br>}</p></p><p><p></p></p><p><p>Main class</p></p><p><p></p></p><p><p>Package com.example.thingking_in_android;</p></p><p><p>Import java.util.ArrayList;<br>Import java.util.List;<br>Import java.util.zip.Inflater;</p></p><p><p>Import Com.example.thingking_in_android. r.layout;</p></p><p><p>Import Android. r.anim;<br>Import android.app.Activity;<br>Import android.content.Intent;<br>Import android.os.Bundle;<br>Import android.view.LayoutInflater;<br>Import android.view.Menu;<br>Import android.view.View;<br>Import android.view.Window;<br>Import android.view.View.OnClickListener;<br>Import android.view.ViewGroup;<br>Import android.widget.AdapterView;<br>Import android.widget.AdapterView.OnItemClickListener;<br>Import android.widget.ArrayAdapter;<br>Import android.widget.BaseAdapter;<br>Import android.widget.Button;<br>Import android.widget.EditText;<br>Import android.widget.ImageView;<br>Import android.widget.LinearLayout;<br>Import android.widget.ListView;<br>Import android.widget.TextView;<br>Import android.widget.Toast;</p></p><p><p>/**<br>* Analog Chat<br>* @author Yellow Two dog reference the first line of code adaptation<br>*<br>*/</p></p><p><br>public class Helloactivity extends Activity {<br>Chat List View<br>Private ListView msglistview;<br><br>Input Information box<br>Private EditText inputtext;<br><br>Send button<br>Private Button send;<br><br>list<msg>list;<br><br>Myadapter adapter;<br><br><br><br>@Override<br>protected void OnCreate (Bundle Savedinstancestate) {<br> <br>System.out.println ("begin");<br>Super.oncreate (savedinstancestate);<br>Do not display the title bar<br>Requestwindowfeature (window.feature_no_title);<br><br>Loading layout files<br>This.setcontentview (r.layout.activity_main);<br><br>Setting up data<br>List=new ArrayList ();<br>Msg msg1=new msg ("Hello I ' am jack!", msg.type_received);<br>MSG msg2=new msg ("Hello is ok?", msg.type_sent);<br>Msg msg3=new msg ("Yes I am very ok!", msg.type_received);<br>MSG msg4=new msg ("that's all right!", msg.type_sent);<br>List.add (msg1);<br>List.add (msg2);<br>List.add (msg3);<br>List.add (msg4);<br><br><br>Get the corresponding View component<br>inputtext= (EditText) Findviewbyid (r.id.input_text);<br>send= (Button) Findviewbyid (r.id.send);<br>msglistview= (ListView) Findviewbyid (r.id.msg_list_view);<br><br>Adapter=new Myadapter ();<br>System.out.println (adapter);<br>System.out.println (list);<br>Msglistview.setadapter (adapter);<br>Add an event for the Send button<br>Send.setonclicklistener (new Onclicklistener () {<br><br>@Override<br>public void OnClick (View V) {<br>Get user input data<br>String content=inputtext.gettext (). toString ();<br>Determine if the data is empty<br>If (! "". equals (content))<br>{<br>Simulate a one-off situation<br><br>Msg msg;<br>If (msg.flag)<br>{<br>Msg=new MSG (content,msg.type_sent);<br><br>}<br>Else<br>{<br>Msg=new MSG (content,msg.type_received);<br>}<br><br>msg.flag=! msg.flag;<br>List.add (msg);<br><br>Adapter.notifydatasetchanged (); Refreshes the display of the ListView when new messages are available<br><br>Inputtext.settext ("");<br>}<br><br>}<br>});<br><br><br><br>}<br><br><br>Class Myadapter extends Baseadapter<br>{</p><p><p>@Override<br>public int GetCount () {<br><br>return list.size ();<br>}</p></p><p><p>@Override<br>Public Object GetItem (int Position) {<br>return List.get (position);<br>}</p></p><p><p>@Override<br>Public long Getitemid (int Position) {<br>TODO auto-generated Method Stub<br>Return 0;<br>}</p></p><p>@Override<br>Public View getView (int position, View convertview, viewgroup Parent) {<br> <br><br>System.out.println ("load = = =");<br>Loading layouts and setting up data<br><br><br>MSG Msg=list.get (position);<br>View view;<br>Viewholder viewholder;<br>The layout reloads so it needs buffering<br>If (convertview==null)<br>{<br>View=layoutinflater.from (helloactivity.this). Inflate (r.layout.msg_item,null);<br>To store a view in an object<br>Viewholder=new Viewholder ();<br> <br>viewholder.leftlayout= (linearlayout) View.findviewbyid (r.id.left_layout);<br>viewholder.rightlayout= (linearlayout) View.findviewbyid (r.id.right_layout);<br> <br>viewholder.leftmsg= (TextView) View.findviewbyid (r.id.left_msg);<br>viewholder.rightmsg= (TextView) View.findviewbyid (r.id.right_msg);<br><br>Views can store objects<br>View.settag (viewholder);<br><br>}<br>Else<br>{<br>view=convertview;<br>viewholder= (viewholder) View.gettag ();<br>}<br> <br><br> <br>Set up resources<br>If (msg.gettype () ==msg.type_received)<br>{<br>ViewHolder.leftLayout.setVisibility (view.visible);<br>ViewHolder.rightLayout.setVisibility (view.gone);<br>ViewHolder.leftMsg.setText (msg.getcontent ());<br>}<br><br>else if (msg.gettype () ==msg.type_sent)<br>{<br>ViewHolder.rightLayout.setVisibility (view.visible);<br>ViewHolder.leftLayout.setVisibility (view.gone);<br>ViewHolder.rightMsg.setText (msg.getcontent ());<br>}<br><br>Return view;<br><br><br>}<br><br>}<br><br><br>}</p><p><p>Android Analog chat interface---adapted the first line of code</p></p></span>