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我正在構建一個Android應用程序,它將返回運行該應用程序的設備的當前位置。我目前有谷歌地圖顯示在屏幕上,但我與位置監聽器有問題,我在其中放置了斷點,並且它們從未被擊中。我將包括我的MainActivity.java和androidMainfest.xml。無法找到當前的GPS位置
MainActivity.java
package com.example.androidgooglemap;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.maps.GoogleMap;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.content.Context;
import android.view.Menu;
import android.widget.Toast;
public class MainActivity extends FragmentActivity {
public GoogleMap mMap;
LocationManager location;
public double latG;
public double lonG;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
location = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
location.getLastKnownLocation(Context.LOCATION_SERVICE);
LocationListener locationListener = new LocationListener(){
@Override
public void onLocationChanged(Location location)
{
if (location != null)
{
latG = location.getLatitude();
lonG = location.getLongitude();
Toast.makeText(MainActivity.this,
latG + " " + lonG,
Toast.LENGTH_LONG).show();
}
}
};
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
/* Request updates at startup */
}
AndroidManifest.xml中
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.androidgooglemap"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="18" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<permission
android:name="com.example.androidgooglemap.permission.MAPS_RECEIVE"
android:protectionLevel="signature"/>
<uses-permission android:name="com.example.androidgooglemap.permission.MAPS_RECEIVE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<!-- The following two permissions are not required to use
Google Maps Android API v2, but are recommended. -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<uses-library android:name="com.google.android.maps" />
<activity
android:name="com.example.androidgooglemap.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="API-KEY"/>
</application>
</manifest>
需要一些指導。謝謝
是否在屏幕上顯示吐司消息? –
我如何輸出吐司消息?在運行代碼時,由於某種原因它甚至不能訪問'onLocationChanged'!我真的很感謝這個事情的幫助 – user3374478
public void onLocationChanged(Location location)這個方法。在它的身體內部,每當你的位置發生變化時,應該顯示吐司消息。可以 ? –