1.Dialog有四种,分别是AlertDialog，ProgressDialog，DatePickerDialog，TimePickerDialog

1.1AlertDialog

public class MainActivity extends Activity {private View view;private TextView tView;private EditText eText;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);LayoutInflater layoutInflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);view = layoutInflater.inflate(R.layout.cell, null);tView = (TextView) view.findViewById(R.id.tv2);eText = (EditText) view.findViewById(R.id.et1);new AlertDialog.Builder(this).setTitle("友情提示").setView(view).setMessage("确定退出？").setNegativeButton("取消", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, "确定",Toast.LENGTH_SHORT).show();}}).setNeutralButton("中立", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, "取消",Toast.LENGTH_SHORT).show();}}).setPositiveButton("确定", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, eText.getText().toString(), Toast.LENGTH_SHORT).show();// tView.setText(eText.getText().toString());}}).show();}}

1.2ProgressDialog

   ProgressDialog pgd = new ProgressDialog(this);pgd.setTitle("nihao");pgd.setMessage("hehe");//pgd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);pgd.setProgress(100);pgd.show();

1.3DatePickerDialog

DatePickerDialog datePickerDialog = new DatePickerDialog(this,new OnDateSetListener() {@Overridepublic void onDateSet(DatePicker view, int year, int monthOfYear,int dayOfMonth) {// TODO Auto-generated method stub}}, myear,mmouth,mday);datePickerDialog.show();

1.4 TimePickerDialog

于1.3相同的使用方式。

2.Menu有三种：分别是：optionsMenu，SubMenu，ContextMenu

2.1.OptionsMenu

public boolean onCreateOptionsMenu(Menu menu) {menu.add(menu.NONE,1,menu.NONE,"菜单1");menu.add(menu.NONE,2,menu.NONE,"菜单2");menu.add(menu.NONE,3,menu.NONE,"菜单3");menu.add(menu.NONE,4,menu.NONE,"菜单4");menu.add(menu.NONE,5,menu.NONE,"菜单5");return true;}
@Override
public boolean onOptionsItemSelected(MenuItem item) {switch (item.getItemId()) {case 1:Toast.makeText(this,"1", Toast.LENGTH_SHORT).show();break;default:Toast.makeText(this,"其他", Toast.LENGTH_SHORT).show();break;}return super.onOptionsItemSelected(item);
}

2.2.SubMenu

@Overridepublic boolean onCreateOptionsMenu(Menu menu) {menu.add(menu.NONE,1,menu.NONE,"菜单1");menu.add(menu.NONE,2,menu.NONE,"菜单2");menu.add(menu.NONE,3,menu.NONE,"菜单3");menu.add(menu.NONE,4,menu.NONE,"菜单4");menu.add(menu.NONE,5,menu.NONE,"菜单5");SubMenu subMenu = menu.addSubMenu(menu.NONE,6,menu.NONE,"菜单6"); subMenu.setHeaderTitle("你好");subMenu.setIcon(R.drawable.ic_launcher);subMenu.addSubMenu(menu.NONE,7,menu.NONE,"菜单7");return true;}
@Override
public boolean onOptionsItemSelected(MenuItem item) {switch (item.getItemId()) {case 1:Toast.makeText(this,"1", Toast.LENGTH_SHORT).show();break;default:Toast.makeText(this,"其他", Toast.LENGTH_SHORT).show();break;}return super.onOptionsItemSelected(item);
}

2.3ContextMenu

public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);TextView textView = (TextView) findViewById(R.id.tv1);
registerForContextMenu(textView);}@Override
public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo) {menu.add(menu.NONE,1,menu.NONE,"菜单1");menu.add(menu.NONE,2,menu.NONE,"菜单2");menu.add(menu.NONE,3,menu.NONE,"菜单3");menu.add(menu.NONE,4,menu.NONE,"菜单4");menu.add(menu.NONE,5,menu.NONE,"菜单5");    super.onCreateContextMenu(menu, v, menuInfo);
}@Overridepublic boolean onContextItemSelected(MenuItem item) {// TODO Auto-generated method stubswitch (item.getItemId()) {case 1:Toast.makeText(this,"1",Toast.LENGTH_SHORT).show();break;default:break;}return super.onContextItemSelected(item);}
}

3.Notification

NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);//声明NotificationNotification notification = new Notification();//设置notification的参数notification.icon=R.drawable.ic_launcher;Intent intent = new Intent(this,MainActivity.class);PendingIntent pendingIntent = PendingIntent.getActivity(this,0, intent,0);notification.setLatestEventInfo(this,"haha" ,"contentText",pendingIntent);notificationManager.notify(10,notification);

4.TabHost

TabHost tabHost = getTabHost();LayoutInflater.from(this).inflate(R.layout.activity_main,tabHost.getTabContentView(), true);Intent intent = new Intent(MainActivity.this, SeocndActivity.class);tabHost.addTab(tabHost.newTabSpec("tab1").setIndicator("搜索").setContent(intent));tabHost.addTab(tabHost.newTabSpec("tab2").setIndicator("搜索").setContent(intent));tabHost.addTab(tabHost.newTabSpec("tab2").setIndicator("搜索").setContent(R.id.l1));