菜鸟Andriod学习32——仿QQ登陆界面

XML文件：

<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:gravity="center_vertical"
 android:stretchColumns="0,3"
    >

    <TableRow
        android:id="@+id/tableRow1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >
        <TextView />

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="用户名"
            android:textSize="24sp" />

        <EditText
            android:id="@+id/user"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="24sp"
            android:minWidth="200sp"
            >

            <requestFocus />
        </EditText>
        <TextView />

    </TableRow>

    <TableRow
        android:id="@+id/tableRow2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >
        <TextView />

        <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="密 码"
             android:textSize="24sp"/>

        <EditText
            android:id="@+id/editText2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
             android:textSize="24sp"
              android:minWidth="200sp"
            android:inputType="textPassword" />
        <TextView />

    </TableRow>

    <TableRow
        android:id="@+id/tableRow3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >
         <TextView />

        <Button
            android:id="@+id/button1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="进去" />

        <Button
            android:id="@+id/button2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="出来" />
         <TextView />

    </TableRow>

</TableLayout>

Activity_main.java文件代码：

 final int NOTIFYID_1 = 123;
 private String user = "rosys";
 private NotificationManager notificationManager;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  notificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
  Button button1 = (Button)findViewById(R.id.button1);
  button1.setOnClickListener(new View.OnClickListener() {
   
   @Override
   public void onClick(View v) {
    // TODO Auto-generated method stub
    EditText etUser = (EditText)findViewById(R.id.user);
    if(!"".equals(etUser.getText())){
     user = etUser.getText().toString();
    }
    sendNotification();
   }

  });
  Button button2=(Button)findViewById(R.id.button2);
  button2.setOnClickListener(new OnClickListener() {
   
   @Override
   public void onClick(View v) {
    notificationManager.cancel(NOTIFYID_1);
    // TODO Auto-generated method stub
//    让布局第一行显示
    ((TableRow)findViewById(R.id.tableRow1)).setVisibility(View.VISIBLE);
//    让布局第二行显示
    ((TableRow)findViewById(R.id.tableRow2)).setVisibility(View.VISIBLE);
    ((Button)findViewById(R.id.button1)).setText("登陆");
   }
  });
  
  
 }

 protected void sendNotification() {
  // TODO Auto-generated method stub
  Builder builder = new AlertDialog.Builder(MainActivity.this);
  builder.setIcon(R.drawable.advise);
  builder.setTitle("我的登陆状态是");
  final int[]imageId = new int[]{R.drawable.img1,R.drawable.img2,
    R.drawable.img3,R.drawable.img4};
  final String[] title = new String[]{"伤心","happy","sad","smile"};
//  创建一个list集合
  List<Map<String,Object>>listItems = new ArrayList<Map<String,Object>>();
//  通过for循环将突破ID和列表项文字放到map中，并添加到List集合中
  for(int i = 0;i<imageId.length;i++){
//   实例话map对象
   Map<String, Object>map = new HashMap<String, Object>();
   map.put("image", imageId[i]);
   map.put("title", title[i]);
   listItems.add(map);
  }
  final SimpleAdapter adapter = new SimpleAdapter(MainActivity.this,listItems,R.layout.items,
    new String[]{"title","image"},new int[]{R.id.title,R.id.image});
  builder.setAdapter(adapter, new DialogInterface.OnClickListener() {
   
   @Override
   public void onClick(DialogInterface dialog, int which) {
    // TODO Auto-generated method stub
    Notification notify  = new Notification();
    notify.icon = imageId[which];
    notify.tickerText=title[which];
    notify.when = System.currentTimeMillis();
    notify.defaults = Notification.DEFAULT_SOUND;
    notify.setLatestEventInfo(MainActivity.this, user, title[which], null);
    notificationManager.notify(NOTIFYID_1,notify);
//    让布局第一行不显示
    ((TableRow)findViewById(R.id.tableRow1)).setVisibility(View.INVISIBLE);
//    让布局第二行不显示
    ((TableRow)findViewById(R.id.tableRow2)).setVisibility(View.INVISIBLE);
    ((Button)findViewById(R.id.button1)).setText("更改登录状态");
    
   }
  });
  builder.create().show();
  
 }

效果如图：