适配器 QQ发送页面

MainActivity

package com.example.adapter;import java.util.ArrayList;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.ArrayAdapter;import android.widget.Button;import android.widget.EditText;import android.widget.ListView;import android.widget.TextView;public class MainActivity extends Activity {private ArrayList<String> data = null;private ArrayAdapter adapter=null;private ListView listView;private EditText msgEditText;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);data = new ArrayList<String>();listView = (ListView) findViewById(R.id.list);adapter = new MyAdapter(this, -1);listView.setAdapter(adapter);msgEditText = (EditText) findViewById(R.id.msgEditText);Button send = (Button) findViewById(R.id.msgSend);send.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {sendMessage();}});}private void sendMessage() {data.add(msgEditText.getText() + "");adapter.notifyDataSetChanged();// 发送后清空输入框内容msgEditText.setText(null);// 输入框发送消息后将ListView滚动到最底部listView.setSelection(ListView.FOCUS_DOWN);}private class MyAdapter extends ArrayAdapter {private LayoutInflater inflater = null;public MyAdapter(Context context, int resource) {super(context, resource);inflater = LayoutInflater.from(context);}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {if (convertView == null)convertView = inflater.inflate(R.layout.item, null);TextView text = (TextView) convertView.findViewById(R.id.textView1);text.setText(data.get(position));return convertView;}@Overridepublic int getCount() {return data.size();}}}

activity_main

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="@drawable/jjj">           <ListView          android:id="@+id/list"          android:layout_width="match_parent"          android:layout_height="wrap_content"          android:layout_above="@+id/commentLinearLayout"          android:layout_alignParentTop="true"                    android:divider="@android:color/transparent"          android:dividerHeight="15dip"          android:scrollbars="none" />          <LinearLayout        android:id="@+id/commentLinearLayout"         android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:background="#e0e0e0"      android:orientation="horizontal">                    <EditText            android:id="@+id/msgEditText"                        android:layout_width="0dip"            android:layout_height="wrap_content"            android:layout_weight="8"            android:hint="发送消息" />        <Button            android:id="@+id/msgSend"            style="?android:attr/buttonStyleSmall"            android:background="@drawable/round"            android:layout_width="0dip"            android:layout_height="wrap_content"            android:layout_weight="2"            android:text="发送" />        </LinearLayout>        </RelativeLayout>

item

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"       >    <TextView        android:id="@+id/textView"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignBottom="@+id/image"        android:layout_alignParentTop="true"        android:layout_toLeftOf="@+id/image"        android:background="@drawable/round"        android:layout_marginRight="5dip"        android:padding="10dip"        android:text="没有数据"        android:textSize="15sp" />    <ImageView        android:id="@+id/image"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:background="@drawable/circle"        android:layout_alignParentRight="true"                android:src="@drawable/ic_launcher" />    </RelativeLayout>

round

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android" >    <!-- 背景填充颜色值 -->      <solid android:color="#2196f3" />            <!-- radius值越大，越趋于圆形 -->      <corners android:radius="20dip" />            <!-- 圆角图像内部填充四周的大小 ，将会以此挤压内部布置的view -->      <padding          android:bottom="5dip"          android:left="5dip"          android:right="5dip"          android:top="5dip" />  </shape>

circle

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"          android:shape= "oval"       android:useLevel= "false" >          <solid android:color= "#FFA500" />    </shape>