android从输入位置获取纬度和经度答案

【问题标题】：android get latitude and longitude from input locationandroid从输入位置获取纬度和经度
【发布时间】：2016-02-12 06:11:31
【问题描述】：

我有一个 EditText，其中键入了位置，当单击按钮时，位置名称被捆绑并通过意图发送到 Details Activity，在那里它接收位置名称并使用 Geocoder 获取纬度和经度。但是当我尝试在地图上显示它不幸的是我得到了一个 RunTimeException。下面是代码。这是获取一个地方的纬度和经度的正确方法吗？请帮助我。我是 Google 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:(不包括地图，从地理编码器获取位置详细信息的地址列表出错）

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（已编辑）：

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)

【问题讨论】：

标签： android location latitude-longitude

【解决方案1】：

如日志：

java.lang.IllegalArgumentException: locationName == null

因为destination字符串是空的，从getIntent()获取。

在 Bundle 中添加 places 键，在单击按钮时将 textView.getText() 值设置为：

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

在Details Activity 中也使用相同的键来获取相同的键来获取值，这在以前的 Activity 中使用。

【讨论】：

感谢您的指正。我已经更改了它，但现在我收到另一个错误。我将编辑问题。
@jobin: 可能addressList 为空所以在调用get 方法之前添加索引检查
运行日志检查时大小显示为零。可能是什么原因。
addressList=geocoder1.getFromLocationName(destination, 1);这段代码有什么问题吗？这是获取位置详细信息（纬度和经度）的正确方法吗
@jobin: 哪个字符串作为destination 传递？

【解决方案2】：

在您的代码目标中为空，因为您传递了 places。

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

但收到了

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

像改变一样

 destination= bundle.getString("places");

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

【讨论】：