java-使用GPS位置
作者：互联网
活动启动后,GPS将启用并捕获用户的纬度,经度并将其报告以解析为Geopoint.问题是GPS连续在后台运行并连续向Parse位置报告.我只希望GPS一次获取位置信息,然后立即停止,因为我自己注意到我一天与Parse达成了大约2万个请求,我认为这是因为它在后台连续运行.
以下是活动代码：
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
}
}
}
如果您需要任何澄清,请告诉我.
提前致谢.
更新资料
我尝试使用单一更新来代替,但似乎不起作用.
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
}
}
}
解决方法:
当您调用LocationManager.requestLocationUpdates()时,系统将通过该调用中给定的LocationListener不断提供位置更新.
如果您只想获取一个位置更新,则有两种选择：
>使用LocationManager.requestSingleUpdate()
>使用LocationManager.requestLocationUpdates(),但在收到第一个更新后取消更新.
我将继续使用2,因为您已经有一些代码.您需要首先将变量mLocManager声明为类字段,而不是在onCreate()中本地声明它.然后,您需要在LocationListener中添加以下代码.
public class MyLocationListener implements LocationListener {
@Override
public void onLocationChanged(Location loc) {
double lati = loc.getLatitude();
double longi = loc.getLongitude();
mlocManager.remoteUpdates(this); // ADD THIS STATEMENT
// The rest of your code goes here ...
}
}
标签：parse-platform,android-activity,gps,java,android 来源： https://codeday.me/bug/20191029/1957581.html