在Eclipse當中建立新專案並依賴於BarCodeLibrary類庫

• Code:

  • MainActivity.java

  public class MainActivity extends Activity implements OnClickListener {
  
      private Button btnScan;
      private EditText etUsername;
      private static final String WEB_URL = "http://172.31.19.202/QRLogin/";
  
      @Override
   
  
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
  
          btnScan = (Button) findViewById(R.id.btnScan);
          btnScan.setOnClickListener(this);
          etUsername = (EditText) findViewById(R.id.etUsername);
      }
  
      @Override
   
  
      public void onClick(View v) {
          //掃碼操作
          Intent intent = new Intent(this, CaptureActivity.class);
          startActivityForResult(intent, 0);
      }
  
      @Override
      protected void onActivityResult(int requestCode, int resultCode, Intent data) {
          super.onActivityResult(requestCode, resultCode, data);
          if
   
   (resultCode == Activity.RESULT_OK) {
              String randnumber = data.getExtras().getString("result");
              String username = etUsername.getText().toString();
              String url = WEB_URL + "saveUsername.php?randnumber=" + randnumber + "&username=" + username;
              //訪問url
              HttpUtils.login(url);
          }
      }
  }

  • 連線網路工具類:

  public class HttpUtils{
      public static void login(final String url){
          new Thread(new Runnable() {
              @Override
              public void run() {
                  HttpURLConnection connection;
                  try {
                      connection = (HttpURLConnection) new URL(url).openConnection();
                      connection.setRequestMethod("GET");
                      connection.getInputStream();
                  } catch (Exception e) {
                      e.printStackTrace();
                  }
              }
          }).start();
      }
  }

  • 在清單檔案中新增節點:

  <activity
      android:name="com.zxing.activity.CaptureActivity"
      android:configChanges="orientation|keyboardHidden"
      android:screenOrientation="portrait"
      android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
      android:windowSoftInputMode="stateAlwaysHidden" >
  </activity>

  • 新增許可權:

  <uses-permission android:name="android.permission.CAMERA"/>
  <uses-permission android:name="android.permission.VIBRATE"/>
  <uses-permission android:name="android.permission.INTERNET"/>