Java 无法解析方法getlatitude()
我是编程新手,正在学习Google Location API教程。我已经正确地完成了所有步骤,但是,下面的代码在getlatitude()和getlatitude()处给出了错误。错误:无法解析方法getlatitude()。如果有人能指出这个问题,那就太好了。还有一件事需要注意,代码似乎从未使用过android.location.location类,我希望getlatitude()会从中产生Java 无法解析方法getlatitude(),java,android,google-play-services,Java,Android,Google Play Services,我是编程新手,正在学习Google Location API教程。我已经正确地完成了所有步骤,但是,下面的代码在getlatitude()和getlatitude()处给出了错误。错误:无法解析方法getlatitude()。如果有人能指出这个问题,那就太好了。还有一件事需要注意,代码似乎从未使用过android.location.location类,我希望getlatitude()会从中产生 import android.app.Activity; import android.os.Bund
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks;
import com.google.android.gms.common.api.GoogleApiClient.OnConnectionFailedListener;
import com.google.android.gms.location.LocationServices;
import android.location.Location;
public class MainActivity extends Activity implements ConnectionCallbacks, OnConnectionFailedListener {
protected GoogleApiClient mGoogleApiClient;
/**
* Represents a geographical location.
*/
protected String mLastLocation;
protected static final String TAG = "basic-location-sample";
protected TextView mLatitudeText;
protected TextView mLongitudeText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mLatitudeText = (TextView) findViewById((R.id.latitude_text));
mLongitudeText = (TextView) findViewById((R.id.longitude_text));
buildGoogleApiClient();
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener((OnConnectionFailedListener) this)
.addApi(LocationServices.API)
.build();
}
@Override
protected void onStart() {
super.onStart();
mGoogleApiClient.connect();
}
@Override
protected void onStop() {
super.onStop();
if (mGoogleApiClient.isConnected()) {
mGoogleApiClient.disconnect();
}
}
@Override
public void onConnected(Bundle connectionHint) {
mLastLocation = String.valueOf(LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient));
if (mLastLocation!= null) {
mLatitudeText.setText(String.valueOf(mLastLocation.getLatitude()));
mLongitudeText.setText(String.valueOf(mLastLocation.getLongitude()));
}
}
@Override
public void onConnectionSuspended(int i) {
Log.i(TAG, "Connection suspended");
mGoogleApiClient.connect();
}
@Override
public void onConnectionFailed(ConnectionResult result) {
Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = " + result.getErrorCode());
}
}
查看
mLastLocation
的类型:
protected String mLastLocation;
String
没有getLatitude
和getLongitude
方法。变量的类型应为Location
,初始化时不使用字符串。valueOf
调用:
protected Location mLastLocation;
...
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
非常感谢;我现在明白这应该是怎么回事了。我有滥用此线程的风险;代码可以工作,但我仍然无法显示我的纬度和经度坐标。我怀疑未在连接的部分中更新mLatitude和mLongitate。有没有办法检查连接是否真的建立了?@Rehan:恐怕不知道-我不是Android开发人员。但我怀疑如果你在Stack Overflow上搜索现有的问题,你会发现很多相关的问题。我会查看现有的帖子。再次感谢您帮助解决位置问题:)