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我寫了一個程序來顯示我的當前位置，在Android手機地址等。使用的API是Android 2.2。以前它在MTS CDMA手機中運行良好。它有一個Android 2.3的API。它也可以在模擬器中正常工作。現在。我買了索尼愛立信Xperia Minipro，它也有Android 2.3。但該程序將運行在它上面。但編輯文本不會顯示任何內容。我使用編輯文本來顯示值。他們沒有被程序更新。可能是什麼問題？相同的程序在模擬器中正常工作，並顯示位置！請幫忙。我可以粘貼下面Android位置無法輸入編輯文本
public class TravelGuide extends Activity {
private static final long MINIMUM_DISTANCE_CHANGE_FOR_UPDATES=1;
private static final long MINIMUM_TIME_BETWEEN_UPDATES=1000;
StringBuilder strReturnedAddress;
List<Address> addresses;
protected LocationManager locationManager;
static String videoId;
Double lat;
Double longd;
Address returnedAddress;
private final LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
//Double latitude = location.getLatitude();
//Double longitude = location.getLongitude();
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
locationManager=(LocationManager)getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, MINIMUM_TIME_BETWEEN_UPDATES,
MINIMUM_DISTANCE_CHANGE_FOR_UPDATES,new MyLocationListener());
showCurrentLocation();
}
public void showCurrentLocation()
{
Location location=locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(location!=null)
{
TextView myLatitude = (TextView)findViewById(R.id.mylatitude);
TextView myLongitude = (TextView)findViewById(R.id.mylongitude);
TextView myAddress = (TextView)findViewById(R.id.myaddress);
String message=String.format("currentLocation\n Longitude:%1$s \n Latitude:%2$s",location.getLongitude(),location.getLatitude());
Toast.makeText(TravelGuide.this,message,Toast.LENGTH_LONG).show();
myLatitude.setText("Latitude: " + String.valueOf(location.getLatitude()));
myLongitude.setText("Longitude: " + String.valueOf(location.getLongitude()));
Geocoder geocoder = new Geocoder(this, Locale.ENGLISH);
try {
List<Address> addresses = geocoder.getFromLocation(Double.valueOf(location.getLatitude()),
Double.valueOf(location.getLongitude()), 1);
if(addresses != null) {
Address returnedAddress = addresses.get(0);
StringBuilder strReturnedAddress = new StringBuilder("Address:\n");
for(int i=0; i<returnedAddress.getMaxAddressLineIndex(); i++) {
strReturnedAddress.append(returnedAddress.getAddressLine(i)).append("\n");
}
videoId = (returnedAddress.getAddressLine(1)).toString();
//sendAddress(videoId);
myAddress.setText(strReturnedAddress.toString());
}
else{
myAddress.setText("No Address returned!");
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
//test = "kovalam";
myAddress.setText("Canont get Address!");
}
}
}
public class MyLocationListener implements LocationListener
{
//private final Context MyLocationListener = null;
//double LATITUDE;
//double LONGITUDE;
TextView myLatitude;
TextView myLongitude;
TextView myAddress;
public void onLocationChanged(Location location)
{
//Context context = null;
myLatitude = (TextView)findViewById(R.id.mylatitude);
myLongitude = (TextView)findViewById(R.id.mylongitude);
myAddress = (TextView)findViewById(R.id.myaddress);
//String message=String.format("new Location\n Longitude:%1$s \n Latitude:%2$s",
//location.getLongitude(),location.getLatitude());
//Toast.makeText(TouristGuideActivity.this,message,Toast.LENGTH_LONG).show();
myLatitude.setText("Latitude: " + String.valueOf(location.getLatitude()));
myLongitude.setText("Longitude: " + String.valueOf(location.getLongitude()));
Geocoder geocoder = new Geocoder(TravelGuide.this, Locale.ENGLISH);
try {
List<Address> addresses = geocoder.getFromLocation(Double.valueOf(location.getLatitude()),
Double.valueOf(location.getLongitude()), 1);
if(addresses != null) {
Address returnedAddress = addresses.get(0);
StringBuilder strReturnedAddress = new StringBuilder("Address:\n");
for(int i=0; i<returnedAddress.getMaxAddressLineIndex(); i++) {
strReturnedAddress.append(returnedAddress.getAddressLine(i)).append("\n");
}
videoId = (returnedAddress.getAddressLine(1)).toString();
//sendAddress(videoId);
//myAddress.setText(strReturnedAddress.toString());
myAddress.setText("Hello");
}
else{
myAddress.setText("No Address returned!");
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
myAddress.setText("Canont get Address!");
}
}
public void onStatusChanged(String s, int i, Bundle b)
{
//Toast.makeText(TouristGuideActivity.this,"Provider status changed",Toast.LENGTH_LONG).show();
}
public void onProviderDisabled(String s)
{
Toast.makeText(TravelGuide.this,"Provider disabled by the user. GPS turned off",
Toast.LENGTH_LONG).show();
}
public void onProviderEnabled(String s)
{
Toast.makeText(TravelGuide.this,"Provider enabled by the user. GPS turned on",
Toast.LENGTH_LONG).show();
}
}
代碼}
將你的textview對象定義爲這個類的全局變量，並且只需在位置監聽器中設置值之後在onCreate（）中啓動類 – Pratik 2012-02-03 05:39:32
我認爲你正在獲取位置對象null。 – MKJParekh 2012-02-03 06:41:36