java - 使用 GPS 位置

Question

Activity 启动后，GPS 将启用并获取用户的纬度、经度并将其报告为解析为地理点。问题是 GPS 在后台持续运行并不断向 Parse 位置报告。我只希望 GPS 获取位置信息一次，然后立即停止，因为我自己注意到我每天使用 Parse 达到了大约 20k 的请求，我认为这是因为它在后台连续运行。

下面是 Activity 代码:

public class MoodActivity extends Activity {

    private FeedbackDialog feedBack;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_mood);
        feedBack = new FeedbackDialog(this, "");
         LocationManager mlocManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
           LocationListener mlocListener = new MyLocationListener();

           mlocManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, mlocListener);







        final TextView teating = (TextView) this.findViewById(R.id.tdinning);
        teating.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                MoodActivity.this.startActivity(new Intent(MoodActivity.this, CasualEventsActivity.class));
            }
        });

        final ImageView ieating = (ImageView) this.findViewById(R.id.idinning);
        ieating.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                MoodActivity.this.startActivity(new Intent(MoodActivity.this, CasualEventsActivity.class));
            }
        });

        final TextView tdrinks = (TextView) this.findViewById(R.id.tcasual);
        tdrinks.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                MoodActivity.this.startActivity(new Intent(MoodActivity.this, CasualEventsActivity.class));
            }
        });

        final ImageView idrinks = (ImageView) this.findViewById(R.id.icasual);
        idrinks.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                MoodActivity.this.startActivity(new Intent(MoodActivity.this, CasualEventsActivity.class));
            }
        });

        final TextView tshows = (TextView) this.findViewById(R.id.tshows);
        tshows.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                MoodActivity.this.startActivity(new Intent(MoodActivity.this, EntertainmentEventsActivity.class));
            }
        });

        final ImageView ishows = (ImageView) this.findViewById(R.id.ishows);
        ishows.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                MoodActivity.this.startActivity(new Intent(MoodActivity.this, EntertainmentEventsActivity.class));
            }
        });

        final TextView tarts = (TextView) this.findViewById(R.id.tculture);
        tarts.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                MoodActivity.this.startActivity(new Intent(MoodActivity.this, CultureEventsActivity.class));
            }
        });

        final ImageView iarts = (ImageView) this.findViewById(R.id.iculture);
        iarts.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                MoodActivity.this.startActivity(new Intent(MoodActivity.this, CultureEventsActivity.class));
            }
        });

        final Button viewall = (Button) this.findViewById(R.id.brandom);
        viewall.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                MoodActivity.this.startActivity(new Intent(MoodActivity.this, CasualEventsActivity.class));
            }
        });
    }



    @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_activity_actions, menu);
        getActionBar().setDisplayShowTitleEnabled(false);



        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle presses on the action bar items
        switch (item.getItemId()) {
            case R.id.pageExperience:
                openPageExperience();
                return true;
            case R.id.pageMessaging:
                openPageMessage();
                return true;

            case R.id.pageEventsBooking:
                openPageBook();
                return true;

            case R.id.pageProfile:
                openPageProfile();
                return true;

            case R.id.pageReport:
                openPageReport();
                return true;

            case R.id.pageAbout:
                openPageAbout();
                return true;

            case R.id.pageLogout:
                openPageLogout();
                return true;

            default:
                return super.onOptionsItemSelected(item);
        }
    }

    private void openPageLogout() {
        // TODO Auto-generated method stub
        //Now call logout
        ParseUser.logOut();
        Intent intent = new Intent(getApplicationContext(), LoginActivity.class);
        startActivity(intent);
    }



    private void openPageAbout() {
        // TODO Auto-generated method stub

    }

    private void openPageReport() {
        // TODO Auto-generated method stub
        FeedbackSettings feedbackSettings = new FeedbackSettings();

        //SUBMIT-CANCEL BUTTONS
        feedbackSettings.setCancelButtonText("No");
        feedbackSettings.setSendButtonText("Send");

        //DIALOG TEXT
        feedbackSettings.setText("Hey, would you like to give us some feedback so that we can improve your experience?");
        feedbackSettings.setYourComments("Type your question here...");
        feedbackSettings.setTitle("Feedback Dialog Title");

        //TOAST MESSAGE
        feedbackSettings.setToast("Thank you so much!");
        feedbackSettings.setToastDuration(Toast.LENGTH_SHORT);  // Default
        feedbackSettings.setToastDuration(Toast.LENGTH_LONG);

        //RADIO BUTTONS
        feedbackSettings.setRadioButtons(false); // Disables radio buttons
        feedbackSettings.setBugLabel("Bug");
        feedbackSettings.setIdeaLabel("Idea");
        feedbackSettings.setQuestionLabel("Question");

        //RADIO BUTTONS ORIENTATION AND GRAVITY
        feedbackSettings.setOrientation(LinearLayout.HORIZONTAL); // Default
        feedbackSettings.setOrientation(LinearLayout.VERTICAL);
        feedbackSettings.setGravity(Gravity.RIGHT); // Default
        feedbackSettings.setGravity(Gravity.LEFT);
        feedbackSettings.setGravity(Gravity.CENTER);

        //SET DIALOG MODAL
        feedbackSettings.setModal(true); //Default is false

        //DEVELOPER REPLIES
        feedbackSettings.setReplyTitle("Message from the Developer");
        feedbackSettings.setReplyCloseButtonText("Close");
        feedbackSettings.setReplyRateButtonText("RATE!");

        //DEVELOPER CUSTOM MESSAGE (NOT SEEN BY THE END USER)
        feedbackSettings.setDeveloperMessage("This is a custom message that will only be seen by the developer!");
        feedBack.show();
    }

    private void openPageProfile() {
        // TODO Auto-generated method stub
        Intent intent = new Intent(this, profileDetailsActivity.class);
        startActivity(intent);

    }

    private void openPageBook() {
        // TODO Auto-generated method stub

    }

    private void openPageMessage() {
        // TODO Auto-generated method stub

    }

    private void openPageExperience() {
        // TODO Auto-generated method stub
        Intent intent = new Intent(this, MoodActivity.class);
        startActivity(intent);
    }

    public class MyLocationListener implements LocationListener {

        @Override
        public void onLocationChanged(Location loc) {
            // TODO Auto-generated method stub
            double lati = loc.getLatitude();
            double longi = loc.getLongitude();

            ParseUser currentUser = ParseUser.getCurrentUser();
            currentUser.saveInBackground();

            ParseGeoPoint point = new ParseGeoPoint(lati, longi);
            currentUser.put("location", point);

            currentUser.saveInBackground(new SaveCallback() {
                @Override
                public void done(ParseException e) {
                    setProgressBarIndeterminateVisibility(false);

                    if (e == null) {
                        // Success!

                    } else {

                    }
                }
            });

        }

           @Override
           public void onProviderDisabled(String provider) {
               // TODO Auto-generated method stub
               Toast.makeText(getApplicationContext(),"Gps Disabled",Toast.LENGTH_SHORT).show();

           }

           @Override
           public void onProviderEnabled(String provider) {
               // TODO Auto-generated method stub
               Toast.makeText(getApplicationContext(),"Gps Enabled",Toast.LENGTH_SHORT).show();


           }

           @Override
           public void onStatusChanged(String provider, int status, Bundle extras) {
               // TODO Auto-generated method stub

           }
          }
}

如果您需要任何说明，请告诉我。提前致谢。

更新 我试过使用单一更新，但它似乎不起作用。

在onCreate下

LocationManager mlocManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
           LocationListener mlocListener = new MyLocationListener();


           mlocManager.requestSingleUpdate(LocationManager.GPS_PROVIDER, mlocListener, Looper.myLooper());

和

    public class MyLocationListener implements LocationListener {

        @Override
        public void onLocationChanged(Location loc) {
            // TODO Auto-generated method stub
            double lati = loc.getLatitude();
            double longi = loc.getLongitude();

            ParseUser currentUser = ParseUser.getCurrentUser();
            currentUser.saveInBackground();

            ParseGeoPoint point = new ParseGeoPoint(lati, longi);
            currentUser.put("location", point);

            currentUser.saveInBackground(new SaveCallback() {
                @Override
                public void done(ParseException e) {
                    setProgressBarIndeterminateVisibility(false);

                    if (e == null) {
                        // Success!

                    } else {

                    }
                }
            });

        }

           @Override
           public void onProviderDisabled(String provider) {
               // TODO Auto-generated method stub
               Toast.makeText(getApplicationContext(),"Gps Disabled",Toast.LENGTH_SHORT).show();

           }

           @Override
           public void onProviderEnabled(String provider) {
               // TODO Auto-generated method stub
               Toast.makeText(getApplicationContext(),"Gps Enabled",Toast.LENGTH_SHORT).show();


           }

           @Override
           public void onStatusChanged(String provider, int status, Bundle extras) {
               // TODO Auto-generated method stub

           }
          }
}

Answer 1

你必须找到一种方法来删除像这样的更新

mlocManager.removeUpdates(mlocListener);

发送解析信息后