废话不说，直接上代码
异步执行编码转换
public class GeocodeAddressIntentService extends IntentService {
protected ResultReceiver resultReceiver;
private static final String TAG = "GEO_ADDY_SERVICE";
public GeocodeAddressIntentService() {
super("GeocodeAddressIntentService");
}
@Override
protected void onHandleIntent(Intent intent) {
Log.e(TAG, "onHandleIntent");
Geocoder geocoder = new Geocoder(this, Locale.getDefault());
String errorMessage = "";
List addresses = null;
int fetchType = intent.getIntExtra(Constants.FETCH_TYPE_EXTRA, 0);
Log.e(TAG, "fetchType == " + fetchType);
if(fetchType == Constants.USE_ADDRESS_NAME) {
String name = intent.getStringExtra(Constants.LOCATION_NAME_DATA_EXTRA);
try {
addresses = geocoder.getFromLocationName(name, 1);
} catch (IOException e) {
errorMessage = "Service not available";
Log.e(TAG, errorMessage, e);
}
}
else if(fetchType == Constants.USE_ADDRESS_LOCATION) {
double latitude = intent.getDoubleExtra(Constants.LOCATION_LATITUDE_DATA_EXTRA, 0);
double longitude = intent.getDoubleExtra(Constants.LOCATION_LONGITUDE_DATA_EXTRA, 0);
try {
addresses = geocoder.getFromLocation(latitude, longitude, 1);
} catch (IOException ioException) {
errorMessage = "Service Not Available";
Log.e(TAG, errorMessage, ioException);
} catch (IllegalArgumentException illegalArgumentException) {
errorMessage = "Invalid Latitude or Longitude Used";
Log.e(TAG, errorMessage + ". " +
"Latitude = " + latitude + ", Longitude = " +
longitude, illegalArgumentException);
}
}
else {
errorMessage = "Unknown Type";
Log.e(TAG, errorMessage);
}
resultReceiver = intent.getParcelableExtra(Constants.RECEIVER);
if (addresses == null || addresses.size() == 0) {
if (errorMessage.isEmpty()) {
errorMessage = "Not Found";
Log.e(TAG, errorMessage);
}
deliverResultToReceiver(Constants.FAILURE_RESULT, errorMessage, null);
} else {
for(Address address : addresses) {
String outputAddress = "";
for(int i = 0; i < address.getMaxAddressLineIndex(); i++) {
outputAddress += " --- " + address.getAddressLine(i);
}
Log.e(TAG, outputAddress);
}
Address address = addresses.get(0);
ArrayList addressFragments = new ArrayList<>();
for(int i = 0; i < address.getMaxAddressLineIndex(); i++) {
addressFragments.add(address.getAddressLine(i));
}
Log.i(TAG, "Address Found");
deliverResultToReceiver(Constants.SUCCESS_RESULT,
TextUtils.join(System.getProperty("line.separator"),
addressFragments), address);
}
}
private void deliverResultToReceiver(int resultCode, String message, Address address) {
Bundle bundle = new Bundle();
bundle.putParcelable(Constants.RESULT_ADDRESS, address);
bundle.putString(Constants.RESULT_DATA_KEY, message);
resultReceiver.send(resultCode, bundle);
}
}
使用
public class MainActivity extends AppCompatActivity {
AddressResultReceiver mResultReceiver;
EditText latitudeEdit, longitudeEdit, addressEdit;
ProgressBar progressBar;
TextView infoText;
CheckBox checkBox;
boolean fetchAddress;
int fetchType = Constants.USE_ADDRESS_LOCATION;
private static final String TAG = "MAIN_ACTIVITY";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
longitudeEdit = (EditText) findViewById(R.id.longitudeEdit);
latitudeEdit = (EditText) findViewById(R.id.latitudeEdit);
addressEdit = (EditText) findViewById(R.id.addressEdit);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
infoText = (TextView) findViewById(R.id.infoText);
checkBox = (CheckBox) findViewById(R.id.checkbox);
mResultReceiver = new AddressResultReceiver(null);
}
public void onRadioButtonClicked(View view) {
boolean checked = ((RadioButton) view).isChecked();
switch (view.getId()) {
case R.id.radioAddress:
if (checked) {
fetchAddress = false;
fetchType = Constants.USE_ADDRESS_NAME;
longitudeEdit.setEnabled(false);
latitudeEdit.setEnabled(false);
addressEdit.setEnabled(true);
addressEdit.requestFocus();
}
break;
case R.id.radioLocation:
if (checked) {
fetchAddress = true;
fetchType = Constants.USE_ADDRESS_LOCATION;
latitudeEdit.setEnabled(true);
latitudeEdit.requestFocus();
longitudeEdit.setEnabled(true);
addressEdit.setEnabled(false);
}
break;
}
}
public void onButtonClicked(View view) {
Intent intent = new Intent(this, GeocodeAddressIntentService.class);
intent.putExtra(Constants.RECEIVER, mResultReceiver);
intent.putExtra(Constants.FETCH_TYPE_EXTRA, fetchType);
if (fetchType == Constants.USE_ADDRESS_NAME) {
if (addressEdit.getText().length() == 0) {
Toast.makeText(this, "Please enter an address name", Toast.LENGTH_LONG).show();
return;
}
intent.putExtra(Constants.LOCATION_NAME_DATA_EXTRA, addressEdit.getText().toString());
} else {
if (latitudeEdit.getText().length() == 0 || longitudeEdit.getText().length() == 0) {
Toast.makeText(this,
"Please enter both latitude and longitude",
Toast.LENGTH_LONG).show();
return;
}
intent.putExtra(Constants.LOCATION_LATITUDE_DATA_EXTRA,
Double.parseDouble(latitudeEdit.getText().toString()));
intent.putExtra(Constants.LOCATION_LONGITUDE_DATA_EXTRA,
Double.parseDouble(longitudeEdit.getText().toString()));
}
infoText.setVisibility(View.INVISIBLE);
progressBar.setVisibility(View.VISIBLE);
Log.e(TAG, "Starting Service");
startService(intent);
}
class AddressResultReceiver extends ResultReceiver {
public AddressResultReceiver(Handler handler) {
super(handler);
}
@Override
protected void onReceiveResult(int resultCode, final Bundle resultData) {
if (resultCode == Constants.SUCCESS_RESULT) {
final Address address = resultData.getParcelable(Constants.RESULT_ADDRESS);
runOnUiThread(new Runnable() {
@Override
public void run() {
progressBar.setVisibility(View.GONE);
infoText.setVisibility(View.VISIBLE);
infoText.setText("Latitude: " + address.getLatitude() + "\n" +
"Longitude: " + address.getLongitude() + "\n" +
"Address: " + resultData.getString(Constants.RESULT_DATA_KEY));
goToNaviActivity(MainActivity.this,"",address.getLatitude(),address.getLongitude(),"1","0");
}
});
} else {
runOnUiThread(new Runnable() {
@Override
public void run() {
progressBar.setVisibility(View.GONE);
infoText.setVisibility(View.VISIBLE);
infoText.setText(resultData.getString(Constants.RESULT_DATA_KEY));
}
});
}
}
}
/**
* 启动高德App进行导航
* @param poiname 非必填 POI 名称
* @param lat 必填 纬度
* @param lon 必填 经度
* @param dev 必填 是否偏移(0:lat 和 lon 是已经加密后的,不需要国测加密; 1:需要国测加密)
* @param style 必填 导航方式(0 速度快; 1 费用少; 2 路程短; 3 不走高速；4 躲避拥堵；5 不走高速且避免收费；6 不走高速且躲避拥堵；7 躲避收费和拥堵；8 不走高速躲避收费和拥堵))
*/
public void goToNaviActivity(Context context, String poiname , Double lat , Double lon , String dev , String style){
StringBuffer stringBuffer = new StringBuffer("androidamap://navi?sourceApplication=")
.append("");
if (!TextUtils.isEmpty(poiname)){
stringBuffer.append("&poiname=").append(poiname);
}
stringBuffer
.append("&lat=").append(lat)
.append("&lon=").append(lon)
.append("&destination=").append(context)
.append("&dev=").append(dev)
.append("&style=").append(style);
Intent intent = new Intent("android.intent.action.VIEW", android.net.Uri.parse(stringBuffer.toString()));
intent.setPackage("com.autonavi.minimap");
startActivity(intent);
}
}
