Android编程基础-实验报告三

1、南昌航空大学实验报告二0一三年一月六日课程名称：移动终端编程技术实验名称:Android组件通信和后台服务班级：: 同组人：指导教师评定： 签名：一、实验目的了解使用Intent进行组件通信的原理，掌握使用Intent启动Activity的方法； 掌握获取Activity返回值的方法；了解Intent过滤器的原理与匹配机制；了解Service的原理和用途；掌握进程内服务的管理方法；掌握服务的隐式启动和显式启动方法；二、实验工具EclipseMyEclipse+ ADT + Android2.2 SDK;三、实验题目1.编程实现(1)功能描述：主界面上有一个 登录”按钮，点击登录”按钮后打开一个

2、新的 Activity ;新 的Activity上面有输入用户名和密码的控件，在用户关闭这个 Activity后，将用 户输入的用户名和密码传递到主界面中。编程要点：主界面的 Activity 命名为 MainActivity ;启动新 的 Activity 命名为 UserLoginActivity ;分别使用显示启动和隐式启动的方式，启动新的Activity ;用户名中不能出现“ ”符号，同时长度不超过12个字符；密码使用密码文本显示方式，即显示为“ * ”，同时只能为数字； 返回的用户名和密码要以Toast的方式显示出来； MainActivity 和 UserLoginActivity

3、 中各个生命周期的回调函数中要以 Log.i方式显示日志信息。2.编程实现(1)功能描述：编程建立一个简单的进程内服务，实现比较两个整数大小的功能。服务提供 IntCompare(Int, Int)函数，输入两个整数，输出较大的整数。编程要点：主界面的Activity命名为MainActivity ；提供两个EditText,分别输入两个 整数；提供一个Botton,启动比较过程；提供一个 TextView,显示较大的整数；分别使用启动方式和绑定方式使用 Service；分别使用 Handle和AsyncTask更新TextView中的内容。四、实验步骤1 .详细工程结构及部分代码显式和隐式都

4、在其中Lab3_l_intent6 BFC士 rn.te5t. n<huj,l MainActivity.java|J'| U5e-rLoginActivrtyjava J Lf layout login.xmlCl ma in.xml» valueriCi strings，xml,1 An droid M a rr«t.)ciTil结果:Intent乐式苜录施式苜录代码：MainActivity.javapublic class MainActivity extends Activity protected int SUBACTIVITY1 = 1;priv

5、ate static String TAG = "MainActivity"Button button1,button2;public void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);setContentView(R.layout.main);学习文档仅供参考Log.i(TAG , "(1) onCreate()");button1 = (Button) this.findViewById(R.id.button1);button2 = (Button

6、) this.findViewById(R.id.button2);button1.setOnClickListener(new View.OnClickListener() public void onClick(View v) Intent intent = new Intent(MainActivity.this,UserLoginActivity.class);Toast.makeText(getApplicationContext(), " 显示启动 ", Toast.LENGTH_SHORT).show();startActivityForResult(inte

7、nt, SUBACTIVITY1););button2.setOnClickListener(new View.OnClickListener()public void onClick(View v) Intent intent = new Intent("com.example.test");Toast.makeText(getApplicationContext(), " 隐式启动 ", Toast.LENGTH_SHORT).show();startActivityForResult(intent, SUBACTIVITY1););protecte

8、d void onActivityResult(int requestCode, int resultCode, Intent data) super.onActivityResult(requestCode, resultCode, data);if (resultCode = RESULT_OK) Uri uriData = data.getData();Toast.makeText(getApplicationContext(), uriData.toString(), Toast.LENGTH_SHORT).show(); else Toast.makeText(getApplicat

9、ionContext(), " 用户名和密码为空",Toast.LENGTH_SHORT).show();Override /可视生命周期开始时被调用，对用户界面进行必要的更改public void onStart() super.onStart();Log.i(TAG , "(2) onStart()");Override /在onStart()后被调用，用于恢复onSaveInstanceState()保存的用户界面 信息public void onRestoreInstanceState(Bundle savedInstanceState) sup

10、er.onRestoreInstanceState(savedInstanceState);Log.i(TAG , "(3) onRestoreInstanceState()");Override 在活动生命周期开始时被调用，恢复被onPause()f亭止的用于界面更新的资源public void onResume() super.onResume();Log.i(TAG , "(4) onResume()");Override /在onResume()后被调用，保存界面信息public void onSaveInstanceState(Bundle s

11、avedInstanceState) super.onSaveInstanceState(savedInstanceState);Log.i(TAG , "(5) onSaveInstanceState()");Override/在重新进入可视生命周期前被调用，载入界面所需要的更改信息public void onRestart() super.onRestart();Log.i(TAG , "(6) onRestart()");Override/在活动生命周期结束时被调用，用来保存持久的数据或释放占用的资源。public void onPause() s

12、uper.onPause();Log.i(TAG , "(7) onPause()");Override / 在可视生命周期结束时被调用，一般用来保存持久的数据或释放占用的资源public void onStop() super.onStop();Log.i(TAG , "(8) onStop()");Override / 在完全生命周期结束时被调用，释放资源，包括线程、数据连接等public void onDestroy() super.onDestroy();Log.i(TAG , "(9) onDestroy()");UserL

13、oginActivity,javapublic class UserLoginActivity extends Activity EditText username,password;Button submit,reset;private static String TAG = "MainActivity"protected void onCreate(Bundle savedInstanceState) / TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.

14、layout.login);Log.i(TAG , "(1) onCreate()");username=(EditText)this.findViewById(R.id.username);password=(EditText)this.findViewById(R.id.password);submit=(Button)this.findViewById(R.id.submit);reset=(Button)this.findViewById(R.id.reset);username.setFocusable(true);username.setOnKeyListene

15、r(new OnKeyListener()public boolean onKey(View v, int keyCode, KeyEvent event) / TODO Auto-generated method stubint unicodeChar = event.getUnicodeChar();if(unicodeChar= 64)return true;elsereturn false;);submit.setOnClickListener(new View.OnClickListener() public void onClick(View v) / TODO Auto-gene

16、rated method stubString name =username.getText().toString();String pass=password.getText().toString();String uriString=" 用户名： "+name+" 密码： "+pass;Uri data = Uri.parse(uriString);Intent result = new Intent(null, data);setResult(RESULT_OK, result);finish(););reset.setOnClickListene

17、r(new View.OnClickListener() public void onClick(View v) / TODO Auto-generated method stubsetResult(RESULT_CANCELED, null);finish(););Override /可视生命周期开始时被调用，对用户界面进行必要的更改public void onStart() super.onStart();Log.i(TAG , "(2) onStart()");Override /在onStart()后被调用，用于恢复onSaveInstanceState()保存的用

18、户界面信息public void onRestoreInstanceState(Bundle savedInstanceState) super.onRestoreInstanceState(savedInstanceState);Log.i(TAG , "(3) onRestoreInstanceState()");Override在活动生命周期开始时被调用，恢复被onPause()f亭止的用于界面更新的资源public void onResume() super.onResume();Log.i(TAG , "(4) onResume()");Ove

19、rride /在onResume()后被调用，保存界面信息public void onSaveInstanceState(Bundle savedInstanceState) super.onSaveInstanceState(savedInstanceState);Log.i(TAG , "(5) onSaveInstanceState()");Override/在重新进入可视生命周期前被调用，载入界面所需要的更改信息public void onRestart() super.onRestart();Log.i(TAG , "(6) onRestart()&qu

20、ot;);Override/在活动生命周期结束时被调用，用来保存持久的数据或释放占用的资源。public void onPause() super.onPause();Log.i(TAG , "(7) onPause()");Override / 在可视生命周期结束时被调用，一般用来保存持久的数据或释放占用的资源public void onStop() super.onStop();Log.i(TAG , "(8) onStop()");Override / 在完全生命周期结束时被调用，释放资源，包括线程、数据连接等public void onDestr

21、oy() super.onDestroy();Log.i(TAG , "(9) onDestroy()");2. 详细工程结构及部分代码显式和隐式都在其中 ：( 显式启动 )学习文档 仅供参考 1号 Lab3 2 Service 彦 src 由 crT*nchu,edUd5e-rvi ceJ ComreSerYicejevaJ| MainAdivityjayaj .> layoutp main.xml & valuesCl strings,xnril三 ArrdroidMarifest.xml结果：部分代码：MainActivity.javapublic cl

22、ass MainActivity extends Activity /* Called when the activity is first created. */public static int maxNum;public static Handler handler=new Handler。；private static TextView result=null;private static Button compare=null;private static Button reset=null;private static EditText one=null;private stati

23、c EditText two=null;public static void UpdateGUI(int refreshDouble)maxNum=refreshDouble;handler.post(RefreshLable);private static Runnable RefreshLable=new Runnable() public void run() result.setText(String.valueOf(maxNum);public void onCreate(Bundle savedInstanceState) final Bundle mybundle=new Bun

24、dle(); super.onCreate(savedInstanceState);setContentView(R.layout.main);final Intent intent=new Intent(MainActivity.this,CompareService.class); result=(EditText)findViewById(R.id.result);compare=(Button)findViewById(R.id pare);reset=(Button)findViewById(R.id.reset); one=(EditText)findViewById(R.id.o

25、ne); two=(EditText)findViewById(R.id.two);compare.setOnClickListener(new OnClickListener() public void onClick(View v) mybundle.putString("one", one.getText().toString(); mybundle.putString("two", two.getText().toString();intent.putExtras(mybundle); startService(intent););reset.s

26、etOnClickListener(new OnClickListener() public void onClick(View v) one.setText(null); two.setText(null); result.setText(null); );CompareService.javapublic class CompareService extends Service private Thread workThread;Bundle bundle=null;int one=0,two=0;public void onCreate() super.onCreate();workTh

27、read = new Thread(null,backgroudWork,"WorkThread");Overridepublic void onStart(Intent intent, int startId) super.onStart(intent, startId);bundle=intent.getExtras();String c1=bundle.getString("one");String c2=bundle.getString("two");if(!c1.toString().equals("")

28、&&!c2.toString().equals("")one=Integer.parseInt(c1);two=Integer.parseInt(c2);if (!workThread.isAlive() workThread.start();public IBinder onBind(Intent intent) return null;private Runnable backgroudWork = new Runnable()Overridepublic void run() int randomDouble =IntCompare(one,two);

29、MainActivity.UpdateGUI(randomDouble); stopSelf();int IntCompare(int a,int b) if(a>=b) return a;elsereturn b;(隐式启动)/La b3_2_B i nd Servi c a & src/田 .nchu. EindServiceJ Compar&Servicejava MainArtivit.jaivaJ r-layoutmain>xmlJ & values string e xml乱 ndrcidManifest.xml部分代码：MainAc

30、tivity.javapublic class MainActivity extends Activity 结果:/* Called when the activity is first created. */ private boolean isBound = false;private CompareService compareService;int a=0,b=0;Overridepublic void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);setContentView(R.layo

31、ut.main);final TextView result=(TextView)findViewById(R.id.result);Button compare=(Button)findViewById(R.id pare);Button reset=(Button)findViewById(R.id.reset);final EditText one=(EditText)findViewById(R.id.one);final EditText two=(EditText)findViewById(R.id.two);if(!isBound)Intent serviceIntent=new

32、 Intent(MainActivity.this,CompareService.class); bindService(serviceIntent,mConnection,Context.BIND_AUTO_CREATE); isBound=true;compare.setOnClickListener(new OnClickListener() public void onClick(View v) String c1=one.getText().toString();String c2=two.getText().toString();if(!c1.equals(""

33、)&&!c2.equals("")a=Integer.parseInt(c1);b=Integer.parseInt(c2);result.setText(String.valueOf(compareService.IntCompare(a, b););reset.setOnClickListener(new OnClickListener()public void onClick(View v) one.setText(null);two.setText(null);result.setText(null););private ServiceConnection mConnection=new ServiceConnection() Overridepublic void onServiceConnected(ComponentName name, IBinder service) / TODO Auto-generated method stubcompareServi