1、 protected void onCreate(Bundle savedInstanceState) (savedInstanceState); setContentView (TAG,(1) onCreate(); Button button =(Button) findViewById (new OnClickListener() public void onClick(View view) oString().trim(); String str1 = ().toString().trim(); (+str);爱好:+str1); if (arg1 = (性别:+男 else if (
2、arg1 = (女 ); ); 五:运行结果截图:实验三:不同界面的切换掌握各种界面布局的特点和使用方法;掌握选项菜单,子菜单和快捷菜单的使用方法。二;三;实验内容:设计一个Tab标签页,实现LinearLayout,RelativeLayout,AbsoluteLayout三种分页面之间的切换,每个页面的内容包括用户名和确定,取消两个按钮实验核心代码:: .Tab2.Tab3public class MainActivity extends TabActivity setContentView TabHost tabHost=getTabHost(); (this).inflate (),t
3、rue); (TAB1). setIndicator(线性布局).setContent (绝对布局相对布局).setContent Tab1,javapublic class Tab1 extends Activity public void onCreate(Bundle savedInstanceState) (savedInstanceState); setContentView public class Tab2 extends Activity public void onCreate(Bundle savedInstanceState)public class Tab3 exten
4、ds Activity实验四:登陆界面和广播消息 了解使用Intent进行组件通信的原理; 了解Intent过滤器的原理与匹配机制; 掌握发送和接受广播消息的方法。先写一个登陆界面,包括用户名,密码,点击登陆时实现页面的跳转功能,在第二个页面使用Intent发送消息,并调用sendBroadcast()函数把Intent携带的消息传送出去,用BroadcastReceiver接受广播消息,在页面下方显示广播内容。四;public class MainActivity extends Activity private Button button; setContentView button=(B
5、utton) findViewById (new () public void onClick(View arg0) Intent intent=new Intent,; startActivity(intent); );public class Second extends Activity private Button button2; private EditText editText; setContentView Intent intent=getIntent(); editText=(EditText) findViewById button2=(Button) findViewB
6、yId (new () public void onClick(View arg0) Intent intent=new Intent( (message, ().toString(); sendBroadcast(intent);public class MyBroadcastReceiver extends BroadcastReceiver public void onReceive(Context context, Intent intent) String msg=( (context, msg, .show();.Secondreceiver android:.MyBroadcas
7、tReceiverintent-filteraction android:/intent-filter/receiver运行结果截图实验五:Service绑定实现数据运算 了解Service的原理和用途; 掌握本地服务的管理和方法; 掌握服务的隐式启动和显示启动方法; 掌握远程服务的绑定和调用方法。三:以绑定方式使用Service,获取Service实例,当点击绑定服务时可以实现两个数的求差和比较大小功能,并输出结果,当点击取消绑定服务时,则无法运算。public class MathService extends Service private final IBinder mBinder=n
8、ew LocalBinder(); public class LocalBinder extends Binder MathService getService() return ; public IBinder onBind(Intent intent) (this, 本地绑定:MathService,.show(); return mBinder;public boolean onUnbind(Intent intent)取消本地绑定:, .show(); return false;public long sub(long a,long b) return a-b;public int c
9、ompare(long a,long b) if(ab) return 1; else if(a=b) return 0; else return -1; private MathService mathService; private Button button1; private Button button3; private Button button4; private EditText editText1; private EditText editText2; private EditText editText3; private boolean isBound=false; se
10、tContentView editText1=(EditText) findViewById editText2=(EditText) findViewById editText3=(EditText) findViewById button1=(Button) findViewById button2=(Button) findViewById button3=(Button) findViewById button4=(Button) findViewById (new () public void onClick(View v) if(!isBound) final Intent ser
11、viceIntent=new Intent ( ,; bindService(serviceIntent, mConnection, ; isBound=true; (new () public void onClick(View v) if(isBound) isBound=false; unbindService(mConnection); mathService=null; if(mathService=null)未绑定服务 return ; String a = ().toString(); long a1 = (a); String b = ().toString(); long b
12、1 = (b); long result=(a1, b1); String msg=(a1)+-+(b)+ =+(result); (msg); if(result=1) (a+b); else if(result=0) (a+ else private ServiceConnection mConnection=new ServiceConnection() public void onServiceDisconnected(ComponentName arg0) mathService=null; public void onServiceConnected(ComponentName n
13、ame, IBinder service) mathService=(service).getService(); ;实验六:SQLite实现用户的增删改查 了解SQLite数据库的特点和体系及结构; 掌握SQLite数据库的建立和操作方法; 理解ContentProvide的用途和原理; 掌握ContentProvider的创建和使用方法。使用SQlite数据库实现用户(包括:姓名,年龄,身高)的添加数据,全部显示,清除显示,全部删除,ID删除,ID查询,ID更新的功能。public class MainActivity extends ActionBarActivity private E
14、ditText et_name; private EditText et_sex; private EditText et_department; private EditText et_id; private EditText et_salary; private MyOpenHelper oh; private SQLiteDatabase db; private TextView tv; private LinearLayout ll; setContentView oh = new MyOpenHelper, , null, 1); db = (); et_name = (EditTe
15、xt) findViewById et_sex = (EditText) findViewById et_department = (EditText) findViewById et_salary = (EditText) findViewById et_id = (EditText) findViewById ll = (LinearLayout) findViewById public void add(View v) String name=().toString(); String sex=().toString(); String department=().toString();
16、 String salary=().toString(); ContentValues values=new ContentValues(); (name,name );sex, sex);department,department);salary, salary);staff, null, values); tv=new TextView;添加成功 (); public void show(View v) Cursor cursor=(, null, null, null, null, null, null, null); while() String id=(_id); String na
17、me=( String sex=( String department=( String salary=( tv=new TextView; (ID:+id+ ;Name:+name+Sex:+sex+Department:+department+Salary+salary); (tv); public void clear(View v) public void deleteAll(View v), null, null);删除成功 public void deleteById(View v) String id=().toString();, _id=, new Stringid);ID删
18、除成功 public void findById(View v), null, , new Stringid, null, null, null, null); id=( (id+ID查询成功 public void updateById(View v),name);, values, 更新ID成功public class MyOpenHelper extends SQLiteOpenHelper public MyOpenHelper(Context context, String name, CursorFactory factory, int version) super(context
19、, name, factory, version); public void onCreate(SQLiteDatabase db) create table staff(_id integer primary key autoincrement,name text,sex text,department text,salary float) public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) 实验七:天气预报 了解位置服务的概念; 了解地图密钥的申请方法; 掌握获取地理信息的方法; 写一个项目,实现显
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