Question

我有这样的事情：

一张桌子，里面有更多学生的数据......内容是ID，姓名，姓氏和来自.....现在我在项目中添加了一个新类......它叫做BankAccount

学生可以拥有0个或更多帐户......

我将它们添加到学生的数据绑定过程中......

现在我想选择一个学生，并在同一页面上的列表框中显示他的（如果有的话）...到目前为止，我有这个代码：

与学生的桌子......

    <table border="1" name="tableStud" arrow-selector>
        <tbody>
            <tr>
                <td>ID</td>
                <td>First Name</td>
                <td>Last Name</td>
                <td>From</td>
            </tr>

            <tr ng-repeat="student in result"
                ng-class="{'selected':$index == selectedRow}"
                ng-click="setSelected(student,$index)">
                <td>{{ student.id }}</td>
                <td>{{ student.firstname }}</td>
                <td>{{ student.lastname }}</td>
                <td>{{ student.mestorodjenja.ime }}</td>

            </tr>

        </tbody>
    </table>


 <select ng-model="student.accounts" multiple="multiple"
                ng-options="account.name for account in student.accounts track by account.id"

        >
        </select>

在控制器中，我得到了这个：

$scope.setSelected = function(student, index) {
    $scope.student = student;   
    $scope.selectedRow = index;
};

现在的问题是，我的列表框显示所选学生的帐户....但它们都是SELECTED，一旦我按下其中一个，其他人消失，而按下的那个仍然被选中。 ...

最重要的是，一旦我转到另一个学生，然后回来......列表框中所有丢失的帐户仍然丢失....而且旧的帐户也被选中......

最后我的问题是：

是否可以选择学生，并且他的帐户将在列表框中显示而不被选中....并且在我按下它们后不会消失...？

提前谢谢！

Answer 1

只需替换所选学生的变量即可。喜欢：

//java code
public class Location_Track1 extends Activity {

    private static final String TAG = "Location_Track1";
    private static final long INTERVAL = 1000 * 60 * 1; //1 minute
    private static final long FASTEST_INTERVAL = 1000 * 60 * 1; // 1 minute

    private static final float SMALLEST_DISPLACEMENT = 0.25F; //quarter of a meter
    Button btnFusedLocation;
    TextView tvLocation;
    LocationRequest mLocationRequest;
    GoogleApiClient mGoogleApiClient;
    Location mCurrentLocation;
    String mLastUpdateTime;
    GoogleMap googleMap;
    private ImageView mCurrentPointer;

    private double longitude;
    private double latitude;
//    private ArrayList<LatLng> points; //added
    private List<LatLng> points = new ArrayList<>();
    Polyline line; //added

    TextView tv_mobno, tv_latitude, tv_longitude, tv_time;
    String getLatitude;
    String getLongitude;
    Button slocation;

    JSONArray result = null;

    ProgressDialog mProgressDialog;
    ArrayList<HashMap<String, String>> arraylist;
    static String CON = "CON";
    JSONObject jsonobject;
    JSONArray jsonarray;

    private String url ="";

    private static final String TAG_USER = "result";

    //   private static final String TAG_SNAME = "pseats";
    private static final String TAG_LONG = "longitude";
    private static final String TAG_LAT = "latitude";
    private static final String TAG_ADDRESS = "paddress";

    protected void createLocationRequest() {
        mLocationRequest = new LocationRequest();
        mLocationRequest.setInterval(INTERVAL);
        mLocationRequest.setFastestInterval(FASTEST_INTERVAL);
        mLocationRequest.setSmallestDisplacement(SMALLEST_DISPLACEMENT); //added
        mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.location_track);

        Log.d(TAG, "onCreate ...............................");

        tv_mobno=(TextView)findViewById(R.id.textView_mob);
        tv_latitude=(TextView)findViewById(R.id.textView_latitude);
        tv_longitude=(TextView)findViewById(R.id.textView_longitude);
        tv_time=(TextView)findViewById(R.id.textView_time);
        slocation=(Button)findViewById(R.id.button_slocation);

        url = "http://example.in/gmap_track.php";

     //   points = new ArrayList<LatLng>();


        googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
                .getMap();


        slocation.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

               // new DownloadJSON().execute();
                new JSONParse().execute();
            }
        });

    }

    private class JSONParse extends AsyncTask<String, String, JSONObject> {
        private ProgressDialog pDialog;
        @Override
        protected void onPreExecute() {
            super.onPreExecute();

            pDialog = new ProgressDialog(Location_Track1.this);
            pDialog.setMessage("Getting Data ...");
            pDialog.setIndeterminate(false);
            pDialog.setCancelable(true);
            pDialog.show();

        }

        @Override
        protected JSONObject doInBackground(String... args) {
            JSONParser jParser = new JSONParser();

            // Getting JSON from URL
            JSONObject json = jParser.getJSONFromUrl(url);
            return json;
        }
        @Override
        protected void onPostExecute(JSONObject json) {
            pDialog.dismiss();
            try {

                // Getting JSON Array
                result = json.getJSONArray(TAG_USER);
                JSONObject c = result.getJSONObject(0);


                // Storing  JSON item in a Variable
                String lat = c.getString(TAG_LAT);
                String longt = c.getString(TAG_LONG);


                //Set JSON Data in TextView

                tv_latitude.setText(lat);
                tv_longitude.setText(longt);

            /*    double lat = c.getDouble(TAG_LAT);
                double longt = c.getDouble(TAG_LONG);

                MarkerOptions marker = new MarkerOptions().position(new LatLng(lat, longt)).title("point");
                googleMap.addMarker(marker);*/


            } catch (JSONException e) {
                e.printStackTrace();
            }

        }
    }
}

HTML ：

$scope.setSelected = function(student, index) {
   $scope.selectedstudent = student;   
   $scope.selectedRow = index;
};

Angularjs如何显示listBox中所选行的隐藏数据？

1 个答案: