1.添加权限
//AndroidManifest.xml中 <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />2.定位
//开始获取 private void startLocation() { //请求超时处理 mRunnable = new Runnable() { @Override public void run() { if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { return; } mProgressDialog.dismiss(); locationManager.removeUpdates(mListener); ((TextView) findViewById(R.id.show)).setText("Get Location time out"); if (lastLocation != null) Toast.makeText(MainActivity.this, "Use last location", Toast.LENGTH_SHORT).show(); else Toast.makeText(MainActivity.this, "重启设备，重新获取", Toast.LENGTH_SHORT).show(); mHandler.removeCallbacks(mRunnable); } }; mHandler.postAtTime(mRunnable, 1 * 60 * 1000 * 10); locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); //检查权限 if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { return; } //获取最近的数据 lastLocation = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);//数据来源:网络提供 if (lastLocation != null) { Location gpsLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); if ((gpsLocation != null) && isBetterLocation(gpsLocation, lastLocation)) {//比较，找到最好的 lastLocation = gpsLocation; } } else { lastLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);//数据来源:GPS提供 } if (lastLocation != null) { ((TextView) findViewById(R.id.show)).setText("Get Last Location->" + showLocation(lastLocation)); } //开始定位 if (mProgressDialog == null || !mProgressDialog.isShowing()) mProgressDialog = ProgressDialog.show(this, "Notice", "Request Location..."); if (locationManager.getProvider(LocationManager.NETWORK_PROVIDER) != null) {//网络 locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, mListener); Toast.makeText(this, "Network location", Toast.LENGTH_SHORT).show(); } else if (locationManager.getProvider(LocationManager.GPS_PROVIDER) != null) {//GPS locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, mListener); Toast.makeText(this, "GPS location", Toast.LENGTH_SHORT).show(); } else {//提示：无法定位 mProgressDialog.dismiss(); Toast.makeText(this, "Need Location!", Toast.LENGTH_SHORT).show(); } } private LocationManager locationManager; private Location lastLocation; private ProgressDialog mProgressDialog; private Runnable mRunnable; private Handler mHandler = new Handler(); private LocationListener mListener = new LocationListener() { @Override public void onLocationChanged(Location location) { mProgressDialog.dismiss(); Toast.makeText(MainActivity.this, "Get Changed:" + showLocation(location), Toast.LENGTH_SHORT).show(); ((TextView) findViewById(R.id.show)).setText("Location changed->" + showLocation(location)); } @Override public void onStatusChanged(String s, int i, Bundle bundle) { } @Override public void onProviderEnabled(String s) { } @Override public void onProviderDisabled(String s) { } }; @Override protected void onDestroy() { mHandler.removeCallbacks(mRunnable); super.onDestroy(); } private static final int TWO_MINUTES = 1000 * 60 * 2; //最佳经纬度 protected boolean isBetterLocation(Location location, Location currentBestLocation) { if (currentBestLocation == null) { return true; } // Check whether the new location fix is newer or older long timeDelta = location.getTime() - currentBestLocation.getTime(); boolean isSignificantlyNewer = timeDelta > TWO_MINUTES; boolean isSignificantlyOlder = timeDelta < -TWO_MINUTES; boolean isNewer = timeDelta > 0; // If it's been more than two minutes since the current location, use // the new location // because the user has likely moved if (isSignificantlyNewer) { return true; // If the new location is more than two minutes older, it must be // worse } else if (isSignificantlyOlder) { return false; } // Check whether the new location fix is more or less accurate int accuracyDelta = (int) (location.getAccuracy() - currentBestLocation .getAccuracy()); boolean isLessAccurate = accuracyDelta > 0; boolean isMoreAccurate = accuracyDelta < 0; boolean isSignificantlyLessAccurate = accuracyDelta > 200; // Check if the old and new location are from the same provider boolean isFromSameProvider = isSameProvider(location.getProvider(), currentBestLocation.getProvider()); // Determine location quality using a combination of timeliness and // accuracy if (isMoreAccurate) { return true; } else if (isNewer && !isLessAccurate) { return true; } else if (isNewer && !isSignificantlyLessAccurate && isFromSameProvider) { return true; } return false; } /** * provider是否相同 */ private boolean isSameProvider(String provider1, String provider2) { if (provider1 == null) { return provider2 == null; } return provider1.equals(provider2); } //显示 private String showLocation(Location location) { String providerStr = location.getProvider().equals(LocationManager.GPS_PROVIDER) ? "gps_provider" : "network_provider"; return location != null ? ("latitude:" + location.getLatitude() + ", longitude:" + location.getLongitude() + ", provider:" + providerStr) : ""; }