import android.content.Context; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.widget.CompoundButton; import android.widget.Toast; import com.amap.api.location.AMapLocation; import com.amap.api.location.AMapLocationClient; import com.amap.api.location.AMapLocationClientOption; import com.amap.api.location.AMapLocationListener; import com.amap.api.maps.AMap; import com.amap.api.maps.LocationSource; import com.amap.api.maps.MapView; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.util.Locale; public class MainActivity extends AppCompatActivity implements LocationSource,AMapLocationListener,         CompoundButton.OnCheckedChangeListener {
      private MapView mMapView;     private AMap aMap;     private AMapLocationClient mlocationClient;     private AMapLocationClientOption mLocationOption;     private OnLocationChangedListener mListener;     @Override     protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);         mMapView = (MapView) findViewById(R.id.map);         mMapView.onCreate(savedInstanceState);         //设置监听         aMap = mMapView.getMap();         aMap.setLocationSource(this);         aMap.getUiSettings().setMyLocationButtonEnabled(true);//设置默认按钮是否显示         aMap.setMyLocationEnabled(true);         aMap.setMyLocationType(AMap.LOCATION_TYPE_LOCATE);//设置定位的模式为定位模式     }     @Override     public void onLocationChanged(AMapLocation aMapLocation) {
          Log.i("TAG","onLocationChanged"+1);         if (mListener != null && aMapLocation != null) {
              if (aMapLocation != null                     && aMapLocation.getErrorCode() == 0) {
                  Log.i("TAG", "定位成功");                 // Toast.makeText(MainActivity.this, "定位成功", Toast.LENGTH_LONG).show();                 mListener.onLocationChanged(aMapLocation);// 显示系统小蓝点             } else {
                  String errText = "定位失败," + aMapLocation.getErrorCode() + ": " + aMapLocation.getErrorInfo();                 Toast.makeText(MainActivity.this, errText, Toast.LENGTH_LONG).show();                 //Log.e("AmapErr", errText);             }         }     }     @Override     public void activate(OnLocationChangedListener onLocationChangedListener) {
          Log.i("TAG","activate"+2);         mListener = onLocationChangedListener;         if (mlocationClient == null) {
              mlocationClient = new AMapLocationClient(this);             mLocationOption = new AMapLocationClientOption();             //设置定位监听             mlocationClient.setLocationListener(this);             //设置为高精度定位模式             mLocationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy);             //设置定位参数             mlocationClient.setLocationOption(mLocationOption);             // 此方法为每隔固定时间会发起一次定位请求，为了减少电量消耗或网络流量消耗，             // 注意设置合适的定位时间的间隔（最小间隔支持为2000ms），并且在合适时间调用stopLocation()方法来取消定位请求             // 在定位结束后，在合适的生命周期调用onDestroy()方法             // 在单次定位情况下，定位无论成功与否，都无需调用stopLocation()方法移除请求，定位sdk内部会移除             mlocationClient.startLocation();         }     }     @Override     public void deactivate() {
          Log.i("TAG","deactivate"+3);         mListener = null;         if (mlocationClient != null) {
              mlocationClient.stopLocation();             mlocationClient.onDestroy();         }         mlocationClient = null;     }     @Override     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
         Log.i("TAG","onCheckedChanged"+4);         aMap.setMyLocationType(AMap.LOCATION_TYPE_LOCATE);     }     public String sHA1(Context context) {
          Log.i("TAG","sHA1"+5);         try {
              PackageInfo info = context.getPackageManager().getPackageInfo(                     context.getPackageName(), PackageManager.GET_SIGNATURES);             byte[] cert = info.signatures[0].toByteArray();             MessageDigest md = MessageDigest.getInstance("SHA1");             byte[] publicKey = md.digest(cert);             StringBuffer hexString = new StringBuffer();             for (int i = 0; i < publicKey.length; i++) {
                  String appendString = Integer.toHexString(0xFF & publicKey[i])                         .toUpperCase(Locale.US);                 if (appendString.length() == 1)                     hexString.append("0");                 hexString.append(appendString);                 hexString.append(":");             }             return hexString.toString();         } catch (PackageManager.NameNotFoundException e) {
              e.printStackTrace();         } catch (NoSuchAlgorithmException e) {
              e.printStackTrace();         }         return null;     }     @Override     protected void onPause() {
          super.onPause();         Log.i("TAG","onPause"+6);         mMapView.onPause();         deactivate();     }     @Override     protected void onSaveInstanceState(Bundle outState) {
          super.onSaveInstanceState(outState);         Log.i("TAG","onSaveInstanceState"+7);         mMapView.onSaveInstanceState(outState);     }     @Override     protected void onResume() {
          super.onResume();         Log.i("TAG","onResume"+8);         mMapView.onResume();     }     @Override     protected void onDestroy() {
          super.onDestroy();         Log.i("TAG","onDestroy"+9);         mMapView.onDestroy();         mMapView.onDestroy();         if (null != mlocationClient) {
              mlocationClient.onDestroy();         }     } } //mainfest文件  还需要导入地图的3djar 和定位的Jar  key需要自己申请 应用的包名和项目的包名需一致

     
         
          
          
          
          
          
          
          
          
          
              
               
                   
                        
                         
                     
                
               
           
      //xml配置文件