本文实例讲述了Android编程实现泡泡聊天界面的方法。分享给大家供大家参考，具体如下：
昨天写了个界面，实现了Android泡泡聊天界面。运行结果如下，点击发送按钮，屏幕就显示Text的内容。
我也是在网上的一份源码的基础上更改的，整个泡泡界面的实现要点：
（1）主界面其实就是一个List View
（2）文字显示界面其实就使用了android:background="@drawable/incoming"这个东西。背景图片的格式是xxx.9.png，专门用来缩放的，不然显示效果非常差。
（3）自定义了一个adapter,当然是继承android.widget.baseAdapter，重写了getView的方法。
整个工程分布如下：
主activity: ChatActivity如下：
package com.tencent;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.Calendar;
public class ChatActivity extends Activity {
private static final String TAG = ChatActivity.class.getSimpleName();;
private ListView talkView;
private Button messageButton;
private EditText messageText;
// private ChatMsgViewAdapter myAdapter;
private ArrayList list = new ArrayList();
public void onCreate(Bundle savedInstanceState) {
Log.v(TAG, "onCreate >>>>>>");
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
talkView = (ListView) findViewById(R.id.list);
messageButton = (Button) findViewById(R.id.MessageButton);
messageText = (EditText) findViewById(R.id.MessageText);
onClickListener messageButtonListener = new onClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Log.v(TAG, "onclick >>>>>>>>");
String name = getName();
String date = getDate();
String msgText = getText();
int RId = R.layout.list_say_he_item;
ChatMsgEntity newMessage = new ChatMsgEntity(name, date, msgText, RId);
list.add(newMessage);
// list.add(d0);
talkView.setAdapter(new ChatMsgViewAdapter(ChatActivity.this, list));
messageText.setText("");
// myAdapter.notifyDataSetChanged();
}
};
messageButton.setonClickListener(messageButtonListener);
}
// shuold be redefine in the future
private String getName() {
return getResources().getString(R.string.myDisplayName);
}
// shuold be redefine in the future
private String getDate() {
Calendar c = Calendar.getInstance();
String date = String.valueOf(c.get(Calendar.YEAR)) + "-"
+ String.valueOf(c.get(Calendar.MONTH)) + "-" + c.get(c.get(Calendar.DAY_OF_MONTH));
return date;
}
// shuold be redefine in the future
private String getText() {
return messageText.getText().toString();
}
public void onDestroy() {
Log.v(TAG, "onDestroy>>>>>>");
// list = null;
super.onDestroy();
}
}
显示消息体的定义
package com.tencent;
public class ChatMsgEntity {
private static final String TAG = ChatMsgEntity.class.getSimpleName();
private String name;
private String date;
private String text;
private int layoutID;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public int getLayoutID() {
return layoutID;
}
public void setLayoutID(int layoutID) {
this.layoutID = layoutID;
}
public ChatMsgEntity() {
}
public ChatMsgEntity(String name, String date, String text, int layoutID) {
super();
this.name = name;
this.date = date;
this.text = text;
this.layoutID = layoutID;
}
}
ChatMsgViewAdapter定义如下：
package com.tencent;
import android.content.Context;
import android.database.DataSetObserver;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.baseAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;
import java.util.ArrayList;
public class ChatMsgViewAdapter extends baseAdapter {
private static final String TAG = ChatMsgViewAdapter.class.getSimpleName();
private ArrayList coll;
private Context ctx;
public ChatMsgViewAdapter(Context context, ArrayList coll) {
ctx = context;
this.coll = coll;
}
public boolean areAllItemsEnabled() {
return false;
}
public boolean isEnabled(int arg0) {
return false;
}
public int getCount() {
return coll.size();
}
public Object getItem(int position) {
return coll.get(position);
}
public long getItemId(int position) {
return position;
}
public int getItemViewType(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
Log.v(TAG, "getView>>>>>>>");
ChatMsgEntity entity = coll.get(position);
int itemLayout = entity.getLayoutID();
LinearLayout layout = new LinearLayout(ctx);
LayoutInflater vi = (LayoutInflater) ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
vi.inflate(itemLayout, layout, true);
TextView tvName = (TextView) layout.findViewById(R.id.messagedetail_row_name);
tvName.setText(entity.getName());
TextView tvDate = (TextView) layout.findViewById(R.id.messagedetail_row_date);
tvDate.setText(entity.getDate());
TextView tvText = (TextView) layout.findViewById(R.id.messagedetail_row_text);
tvText.setText(entity.getText());
return layout;
}
public int getViewTypeCount() {
return coll.size();
}
public boolean hasStableIds() {
return false;
}
public boolean isEmpty() {
return false;
}
public void registerDataSetObserver(DataSetObserver observer) {
}
public void unregisterDataSetObserver(DataSetObserver observer) {
}
}
布局文件看得我比较痛苦，这个布局文件不好搞啊，呵呵
完整实例代码代码点击此处本站下载。
希望本文所述对大家Android程序设计有所帮助。
