《移动应用开发》试题及答案.doc

.移动应用开发试题题目：1.请实现点击按钮拨打电话功能。（20分）2.请实现点击按钮改变文本控件颜色的功能。（30分）3.请实现使用socket通信的服务器端代码。（50分）要求：逻辑结构完整，答案要点突出，论述充分，每题答案字数不少于400字。答案不得完全照抄书本或其他资料，不得互相抄袭。精选范本.中南大学网络教育课程考试移动应用开发答卷本人承诺：本试卷确为本人独立完成，若有违反愿意接受处理。签名：_学号：_专业：_学习中心：_题号一二三总分评阅人签字成绩1. /a191030148/article/details/9396099答： private Button btn2;btn2=(Button)findViewById(R.id.btn2);/在xml中把button2改成btn2，为该按钮的idbtn2.setOnClickListener(new OnClickListener();在OnClick() Intent in2 = new Intent(); in2.setAction(Intent.ACTION_CALL);/指定意图动作 in2.setData(Uri.parse(tel:1836380000);/指定电话号码 startActivity(in2);在android系统中，所有系统请求，必须要在androidmainfest.xml中注册 在application上面MainActivity.java:package com.example.qq;import .Uri;import android.os.Bundle;import android.app.Activity;import android.app.AlertDialog;import android.app.Dialog;import android.content.DialogInterface;import android.content.Intent;import android.view.LayoutInflater;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;public class MainActivity extends Activity private Button btn;private Button btn2; private EditText et; private EditText et2; Override protected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); et = (EditText)findViewById(R.id.editText1); et2 = (EditText)findViewById(R.id.editText2); btn2 = (Button)findViewById(R.id.btn2); btn = (Button)findViewById(R.id.button1); btn.setOnClickListener(new OnClickListener()Overridepublic void onClick(View arg0) / TODO Auto-generated method stub final String str = et.getText().toString().trim(); final String str2 = et2.getText().toString().trim();if (str.equals(str2)Intent in = new Intent(MainActivity.this,SecActivity.class);startActivity(in);elseSystem.out.println(!);); btn2.setOnClickListener(new OnClickListener()Overridepublic void onClick(View arg0) / TODO Auto-generated method stubIntent in2 = new Intent();in2.setAction(Intent.ACTION_CALL);in2.setData(Uri.parse(tel;startActivity(in2);); Override public boolean onCreateOptionsMenu(Menu menu) / Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; androidmainfest.xml: 1. /uid-21209537-id-3179289.htmlAndroid Layout文件Layout文件，用来呈现一个拨打电话的按钮。1. 2. 6.7. 8. 13.14. Activity使用以下代码，Android拨打电话：1. Intent callIntent = new Intent(Intent.ACTION_CALL);2. callIntent.setData(Uri.parse(tel;3. startActivity(callIntent);文件：MainActivity.java 当点击拨打电话按钮时，就会拨个号码。1. package net.cublog.android;2.3. import android.app.Activity;4. import android.content.Context;5. import android.content.Intent;6. import .Uri;7. import android.os.Bundle;8. import android.telephony.PhoneStateListener;9. import android.telephony.TelephonyManager;10. import android.util.Log;11. import android.view.View;12. import android.view.View.OnClickListener;13. import android.widget.Button;14.15. public class MainActivity extends Activity 16. private Button button;17. 18. Override19. public void onCreate(Bundle savedInstanceState) 20. 21. super.onCreate(savedInstanceState);22. setContentView(R.layout.main);23. 24. button = (Button) findViewById(R.id.buttonCall);25. 26. / add button listener27. button.setOnClickListener(new OnClickListener() 28. 29. Override30. public void onClick(View arg0) 31. 32. Intent callIntent = new Intent(Intent.ACTION_CALL);33. callIntent.setData(Uri.parse(tel;34. startActivity(callIntent);35. 36. 37. 38. );39. 40. 41. 42. 43. Android Manifest拨打电话，Android需要CALL_PHONE的权限。在AndroidManifest.xml中添加以下代码：1. 添加后：1. 2. 6.7. 8. 9.10. 13. 16. 17. 18.19. 20. 21. 22. 23.24. PhoneStateListener 例子更新上面的Activity，模拟拨打电话的状态，当电话拨打结束后，返回原始Activity，实际上只是重启了这个activity。1. package net.cublog.android;2.3. import android.app.Activity;4. import android.content.Context;5. import android.content.Intent;6. import .Uri;7. import android.os.Bundle;8. import android.telephony.PhoneStateListener;9. import android.telephony.TelephonyManager;10. import android.util.Log;11. import android.view.View;12. import android.view.View.OnClickListener;13. import android.widget.Button;14.15. public class MainActivity extends Activity 16. private Button button;17. 18. Override19. public void onCreate(Bundle savedInstanceState) 20. 21. super.onCreate(savedInstanceState);22. setContentView(R.layout.main);23. 24. button = (Button) findViewById(R.id.buttonCall);25. 26. / add PhoneStateListener27. PhoneCallListener phoneListener = new PhoneCallListener();28. TelephonyManager telephonyManager = (TelephonyManager) this29. .getSystemService(Context.TELEPHONY_SERVICE);30. telephonyManager.listen(phoneListener,PhoneStateListener.LISTEN_CALL_STATE);31. 32. 33. / add button listener34. button.setOnClickListener(new OnClickListener() 35. 36. Override37. public void onClick(View arg0) 38. 39. Intent callIntent = new Intent(Intent.ACTION_CALL);40. callIntent.setData(Uri.parse(tel;41. startActivity(callIntent);42. 43. 44. 45. );46. 47. 48. 49. /monitor phone call activities50. private class PhoneCallListener extends PhoneStateListener 51. 52. private boolean isPhoneCalling = false;53. 54. String LOG_TAG = LOGGING 123;55. 56. Override57. public void onCallStateChanged(int state, String incomingNumber) 58. 59. if (TelephonyManager.CALL_STATE_RINGING = state) 60. / phone ringing61. Log.i(LOG_TAG, RINGING, number: + incomingNumber);62. 63. 64. if (TelephonyManager.CALL_STATE_OFFHOOK = state) 65. / active66. Log.i(LOG_TAG, OFFHOOK);67. 68. isPhoneCalling = true;69. 70. 71. if (TelephonyManager.CALL_STATE_IDLE = state) 72. / run when class initial and phone call ended, 73. / need detect flag from CALL_STATE_OFFHOOK74. Log.i(LOG_TAG, IDLE);75. 76. if (isPhoneCalling) 77. 78. Log.i(LOG_TAG, restart app);79. 80. / restart app81. Intent i = getBaseContext().getPackageManager()82. .getLaunchIntentForPackage(83. getBaseContext().getPackageName();84. i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);85. startActivity(i);86. 87. isPhoneCalling = false;88. 89. 90. 91. 92. 93. 由于PhoneStateListener需要READ_PHONE_STATE权限，需要在AndroidManifest.xml中添加以下代码：1. 添加后AndroidManifest.xml如下：1. 2. 6.7. 8. 9. 10.11. 14. 17. 18. 19.20. 21. 22. 23. 24.25. 1. /kalision/article/details/40476249答：MainActivity.javaimport android.app.Activity;import android.content.Intent;import .Uri;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;public class MainActivity extends Activity private Button mCallButton;Overrideprotected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mCallButton = (Button) findViewById(R.id.btn_call);mCallButton.setOnClickListener(new OnClickListener() Overridepublic void onClick(View v) / TODO Auto-generated method stub/打给联通客服10010Intent intent = new Intent(Intent.ACTION_CALL,Uri.parse(tel:10010);startActivity(intent););/Override/public boolean onCreateOptionsMenu(Menu menu) / Inflate the menu; this adds items to the action bar if it is present./getMenuInflater().inflate(R.menu.main, menu);/return true;/public void clickHandler(View source)/TextView tv = (TextView) findViewById(R.id.show);/tv.setText(你好！现在时间： + new java.util.Date();/activity_main.xml: AndroidManifest.xml: 2./doc-view-1055.htm答：打开表单模板：%FR_HOME%WebReportWEB-INFreportletsdemoanalyticsmulti_reportall.frm。选中总体概况按钮，在右侧的属性表中添加点击事件。具体的js代码如下：if(window.oldtd != null) window.oldtd.removeAttr(style); var td; if($(e.target).is(button) td=$(e.target).parent().parent(); else td=$(e.target).find(button).parent().parent(); td.css(background-image:url(),background-color:rgb(170, 223, 248); window.oldtd=td; 3. /page/e2010/0320/95494.html答：服务器端 author version1.002008/8/2 / .ServerSocket; .Socket; importjava.io.IOException; importjava.io.BufferedReader; importjava.io.InputStreamReader; importjava.io.PrintWriter; publicclassServerSocketTest privateServerSocketss; privateSocketsocket; privateBufferedReaderin; privatePrintWriterout; publicServerSocketTest() try ss=newServerSocket(10000);/建立服务器，监听. System.out.println(Serverislisteningat10000.); while(true) socket=ss.accept(); /获取客户端IP地址 StringremoteIP=socket.getInetAddress().getHostAddress(); /获取客户端连接端口 StringremotePort=:+socket.getLocalPort(); System.out.println(Aclinetcomein!IP:+remoteIP+remotePort); /读取客户端输入 in=newBufferedReader(newInputStreamReader(socket.getInputStream(); Stringline=in.readLine(); System.out.println(Clientsendis:+line); /将服务器端信息发往客户端 out=newPrintWriter(socket.getOutputStream(),true); out.println(YourMessageReceived!); out.close(); in.close(); socket.close(); catch(IOExceptionex) System.out.println(ex.getCause(); publicstaticvoidmain(Stringargs) newServerSocketTest(); 3.答：开发环境为eclipse，首先，新建两个普通的Java工程，一个命名为server_1,作为服务端；另一个命名为client_1,作为客户端。完成的功能就是在客户端的控制台输入内容后，客户端将内容发送至服务端，在服务端的控制台可以看到输入的内容，当输入的内容为shutdown时，服务端和客户端都关闭通信，通信结束。服务端代码：package server_1;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintWriter;import .ServerSocket;import .Socket;public class server_1 public static void main(String args) throws IOException /将异常全部抛出 ServerSocket server = new ServerSocket(10000); /用serversocket来启动服务器，并指定端口号 System.out.println(服务器启动。); Socket socket = server.accept(); /获取客户端的socket信息 BufferedReader in = null; in = new BufferedReader(new InputStreamReader(socket.getInputStream(); /启动缓冲区 while (true) String msg = in.readLine(); / 将客户端发送来的信息存储在msg中 System.out.println(msg); if (msg.equals(shutdown) /客户端如果发送的是shutdown，就关闭客户端 break; in.close(); /执行相应的关闭操作 考虑这是一个入门级的程序，所以暂时不考虑各种异常情况。 建立seversocket，并且指定服务器的端口号为10000，此时服务器端开始运行。（端口号尽量取大于1024的数字，小于1024的一般都是系统程序占用）然后利用socket实现和客户端的连接。in是一个输入缓冲区，客户端发送来的信息就暂时存储在这个缓冲区中。然后用while语句，循环的监听客户端发送过来的数据，当是一般信息时，就讲客户端发来的内同打印到控制台，如果是“shutdown”，则关闭服务器端，此次通信终止。3. /guoguojune/article/details/6185301答：开发环境 Vs 2008 新建一个