android从输入位置获取纬度和经度

时间：2016-02-12 06:11:31

标签： android location latitude-longitude

我有一个EditText，其中输入了位置，当点击按钮时，将捆绑并通过意图将其发送到Details Activity，它接收位置名称并使用Geocoder获取经度和经度。但是当我尝试显然它在地图上显示我得到一个RunTimeException.Below是代码。这是获取一个地方的纬度和经度的正确方法。请帮助我。我是谷歌地图的新手。

MainActivity.java：

   public class MainActivity extends AppCompatActivity  {
     AutoCompleteTextView textView;
      ArrayAdapter<String> arrayAdapter; 
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            Log.e("MainActivity:","Started");
            List l = new ArrayList();
            l.add("New Delhi");
            l.add("Mumbai");
            l.add("Chennai");
            l.add("Bangalore");
            Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
            setSupportActionBar(toolbar);
            getSupportActionBar().setTitle("Destination");

            AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.autocomplete);
           arrayAdapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,l);
            textView.setAdapter(arrayAdapter);
            final Bundle bundle =new Bundle();
            bundle.putString("places",textView.getText().toString());


            Button button1 = (Button) findViewById(R.id.enter);
            button1.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Intent intent = new Intent(getApplicationContext(),      Details.class);
                    intent.putExtras(bundle);
                    startActivity(intent);
                }
            });

        }}

Details.java :(地图未包含，地址列表中的错误从地理编码器获取位置详细信息）

public class Details extends AppCompatActivity {
SupportMapFragment mapFragment;LatLng latLng;ArrayList<LatLng> markerPoints;LatLng from,to;Polyline polyline;ArrayList<Polyline> polylines;
    private GoogleMap map;LocationManager manager;Double lat,longt;Location location;
    // The minimum distance to change Updates in meters
    private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters

    // The minimum time between updates in milliseconds
    private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute
    boolean isGPSEnabled = false;

    // flag for network status
    boolean isNetworkEnabled = false;

    boolean canGetLocation = false;
    List<LatLng> latLngslist;
    Marker marker;int i;String cityName,destination;
    int start; ArrayList<LatLng> wapt;Routing routing;
    Geocoder geocoder;int counter=0;
    List<Address> wayptdetails;
    String destinationname;
    double destinationLatitude;
    double destinationLongitude;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.details);
        mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map1);
        mapFragment.getMapAsync(this);
        getLocation();
        wapt=new ArrayList<LatLng>();
        wayptdetails=new ArrayList<Address>();
      Bundle bundle= getIntent().getExtras();
      destination= bundle.getString("place");
        Geocoder geocoder1=new Geocoder(this,Locale.getDefault());
        try {

           List<Address>      addressList=geocoder1.getFromLocationName(destination,1);
           destinationLatitude= addressList.get(0).getLatitude();
            destinationLongitude=addressList.get(0).getLongitude();
       Log.e("Destination","Location retreived");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }}

错误：

02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime: FATAL EXCEPTION: main
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.jobinsabu.destination/com.example.jobinsabu.destination.Details}: java.lang.IllegalArgumentException: locationName == null
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2252)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2306)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.access$700(ActivityThread.java:153)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1286)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:99)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.os.Looper.loop(Looper.java:176)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:5302)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at java.lang.reflect.Method.invokeNative(Native Method)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Method.java:511)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at dalvik.system.NativeStart.main(Native Method)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:  Caused by: java.lang.IllegalArgumentException: locationName == null
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.location.Geocoder.getFromLocationName(Geocoder.java:171)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at com.example.jobinsabu.destination.Details.onCreate(Details.java:78)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.Activity.performCreate(Activity.java:5326)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1097)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2215)
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2306) 
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.access$700(ActivityThread.java:153) 
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1286) 
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:99) 
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.os.Looper.loop(Looper.java:176) 
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:5302) 
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at java.lang.reflect.Method.invokeNative(Native Method) 
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Method.java:511) 
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102) 
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869) 
02-12 11:39:11.082 399-399/com.example.jobinsabu.destination E/AndroidRuntime:     at dalvik.system.NativeStart.main(Native Method) 

错误（编者）：

02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime: FATAL EXCEPTION: main
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.jobinsabu.destination/com.example.jobinsabu.destination.Details}: java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2252)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2306)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.access$700(ActivityThread.java:153)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1286)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:99)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.os.Looper.loop(Looper.java:176)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:5302)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at java.lang.reflect.Method.invokeNative(Native Method)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Method.java:511)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at dalvik.system.NativeStart.main(Native Method)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:  Caused by: java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at java.util.ArrayList.get(ArrayList.java:304)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at com.example.jobinsabu.destination.Details.onCreate(Details.java:79)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.Activity.performCreate(Activity.java:5326)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1097)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2215)
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2306) 
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.access$700(ActivityThread.java:153) 
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1286) 
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:99) 
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.os.Looper.loop(Looper.java:176) 
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:5302) 
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at java.lang.reflect.Method.invokeNative(Native Method) 
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Method.java:511) 
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102) 
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869) 
02-12 12:00:20.371 4652-4652/com.example.jobinsabu.destination E/AndroidRuntime:     at dalvik.system.NativeStart.main(Native Method) 

2 个答案:

答案 0 :(得分：1)

与日志一样：

  

java.lang.IllegalArgumentException：locationName == null

因为来自destination的{​​{1}}字符串为空。

在Bundle中添加getIntent()键，点击按钮时places值为：

textView.getText()

同样使用相同的密钥获取相同的密钥，以获取之前活动中使用的 bundle.putString("places",textView.getText().toString()); intent.putExtras(bundle); 活动中的值。

答案 1 :(得分：0)

在您的代码目的地为空，因为您通过了地方。

  bundle.putString("places",textView.getText().toString());

但收到了

  destination= bundle.getString("place");
  //change into places.

像

一样改变 
 destination= bundle.getString("places");

在传递字符串之前检查textView.getText（）。toString（）不为空。

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