问题描述
我寻觅了不少地方,但我没有起身与工作还没有什么好的解决办法,我真的需要帮助!我提出,需要从一个活动传递一个经度和纬度串到另一个应用程序。我怎样才能做到这一点???看看我的code所在位置:LocationActivity.java需要将字符串传递给其他的活动,到另外一个,我没有贴到这里。这需要传递被命名为字符串:latLongString
I have searched quite a few places but i haven't got up with any good solution that worked yet, and i really need help!I am making an application that needs to pass a longitude and latitude string from one activity to another.How can i do this??? Take a look at my code here: The LocationActivity.java needs to pass the string to the other activity and to another one that i didn't paste into here. And the string that needs to be passed is named: "latLongString"
LocationActivity.java:
LocationActivity.java:
import android.R.string;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
public class LocationActivity extends Activity {
private String Location;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LocationManager locManager;
locManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,1000L,500.0f, locationListener);
Location location = locManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
updateWithNewLocation(location);
if(location != null)
{
double latitude = location.getLatitude();
double longitude = location.getLongitude();
}
}
private void updateWithNewLocation(Location location) {
TextView myLocationText = (TextView)findViewById(R.id.LocationWord);
String latLongString = "";
if (location != null) {
double lat = location.getLatitude();
double lng = location.getLongitude();
latLongString = "Lat:" + lat + "\nLong:" + lng;
//This is where i need to pass the string to the other activity
} else {
latLongString = "No location found";
}
myLocationText.setText("Your Current Position is:\n" +
latLongString);
}
private final LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
updateWithNewLocation(location);
}
public void onProviderDisabled(String provider) {
updateWithNewLocation(null);
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
};
}
另一项活动:
The other activity:
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.List;
import java.util.Locale;
import android.R.string;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.location.Address;
import android.location.Criteria;
import android.location.Geocoder;
import android.location.Location;
import android.os.Bundle;
import android.os.Environment;
import android.telephony.gsm.SmsMessage;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import android.location.LocationManager;
import android.location.LocationListener;
public class FindAndroidActivity extends Activity implements OnClickListener {
/** Called when the activity is first created. */
Button Nextbutton1, Nextbutton2, Nextbutton3, TestLocationService, EditSettings;
TextView Cordinates, Adress, FindAndroid, TextView;
EditText LocationWord;
private LocationManager locManager;
private LocationListener locListener;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.firsttimescreen);
Nextbutton1 = (Button)findViewById(R.id.Nextbutton1);
Nextbutton1.setOnClickListener(this);
}
public void onClick(View src) {
switch(src.getId()) {
case R.id.Nextbutton1:
setContentView(R.layout.setup);
Nextbutton2 = (Button)findViewById(R.id.Nextbutton2);
TestLocationService = (Button)findViewById(R.id.TestLocationService);
TestLocationService.setOnClickListener(this);
Nextbutton2.setOnClickListener(this);
break;
case R.id.Nextbutton2:
setContentView(R.layout.setup1);
Nextbutton3 = (Button)findViewById(R.id.Nextbutton3);
LocationWord = (EditText)findViewById(R.id.LocationWord);
LocationWord.requestFocus(View.FOCUS_DOWN);
Nextbutton3.setOnClickListener(this);
break;
case R.id.Nextbutton3:
setContentView(R.layout.main);
EditSettings = (Button)findViewById(R.id.EditSettings);
EditSettings.setOnClickListener(this);
break;
case R.id.TestLocationService:
Bundle extras = getIntent().getExtras();
if(extras !=null) {
String value = extras.getString("KEY");
}
Cordinates = (TextView)findViewById(R.id.Cordinates);
Cordinates.setText(value);
//This does not work because the string "value" isn't availible outside the braces,
//obviously. How do i make it availible there???
break;
case R.id.EditSettings:
setContentView(R.layout.setup1);
Nextbutton3 = (Button)findViewById(R.id.Nextbutton3);
LocationWord = (EditText)findViewById(R.id.LocationWord);
LocationWord.requestFocus(View.FOCUS_DOWN);
Nextbutton3.setOnClickListener(this);
break;
}
}
}
推荐答案
在你的LocationActivity类:
In your LocationActivity class:
Intent i = new Intent(this, FindAndroidActivity.class);
i.putExtra("KEY",YourData);
在FindAndroidActivity类
In FindAndroidActivity class
Bundle extras = getIntent().getExtras();
if(extras !=null) {
String value = extras.getString("KEY");
}
这篇关于在Android的活动之间传递字符串的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!