寒假每日日报34（体温登记app——进度7）

今天把定位功能重新写了一下，用经纬度表示，没有调用百度地图

首先是需要有相应的权限

AndroidManifest.xml文件：

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />

MainActivity.java

//地点
private EditText mLocal;
public static final int LOCATION_CODE=301;
private LocationManager locationManager;
private String locationProvider=null;

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //地点
        mLocal=findViewById(R.id.local);
        mLocal.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (event.getAction() == MotionEvent.ACTION_DOWN) {
                    getLocation();
                    return true;
                }
                return false;
            }
        });
}

private void getLocation(){
        locationManager=(LocationManager) getSystemService(Context.LOCATION_SERVICE);
        //获取所有可用的位置提供器
        List<String> providers=locationManager.getProviders(true);
        if(providers.contains(LocationManager.NETWORK_PROVIDER)){
            //如果是Network
            locationProvider=locationManager.NETWORK_PROVIDER;
        }
        if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.M){
            //获取权限（如果没有开启权限，会弹出对话框，询问是否开启权限）
            if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)!= PackageManager.PERMISSION_GRANTED|| ActivityCompat.checkSelfPermission(this,Manifest.permission.ACCESS_COARSE_LOCATION)!=PackageManager.PERMISSION_GRANTED){
                //请求权限
                ActivityCompat.requestPermissions(this,new String[]{
                        Manifest.permission.ACCESS_FINE_LOCATION,Manifest.permission.ACCESS_COARSE_LOCATION
                },LOCATION_CODE);
            }else{
                //监测地理位置变化
                locationManager.requestLocationUpdates(locationProvider,3000,1,locationListener);
                Location location=locationManager.getLastKnownLocation(locationProvider);
                if(location!=null){
                    //输入经纬度
                    mLocal.setText("经度："+location.getLongitude() + "，纬度：" + location.getLatitude() + "");
                }
            }
        }else{
            //监视地理位置变化
            locationManager.requestLocationUpdates(locationProvider,3000,1,locationListener);
            Location location=locationManager.getLastKnownLocation(locationProvider);
            if(location!=null){
                //不为空，显示地理位置经纬度
                mLocal.setText("经度："+location.getLongitude() + "，纬度：" + location.getLatitude() + "");
            }
        }
    }
public LocationListener locationListener = new LocationListener() {
        // Provider的状态在可用、暂时不可用和无服务三个状态直接切换时触发此函数
        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
        }
        // Provider被enable时触发此函数，比如GPS被打开
        @Override
        public void onProviderEnabled(String provider) {
        }
        // Provider被disable时触发此函数，比如GPS被关闭
        @Override
        public void onProviderDisabled(String provider) {
        }
        //当坐标改变时触发此函数，如果Provider传进相同的坐标，它就不会被触发
        @Override
        public void onLocationChanged(Location location) {
            if (location != null) {
            //不为空,显示地理位置经纬度
                mLocal.setText("经度："+location.getLongitude() + "，纬度：" + location.getLatitude() + "");
                getAddress(location.getLongitude(),location.getLatitude());
            }
        }
    };

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults){
        switch (requestCode) {
            case LOCATION_CODE:
                if(grantResults.length > 0 && grantResults[0] == getPackageManager().PERMISSION_GRANTED
                        && grantResults[1] == PackageManager.PERMISSION_GRANTED) {
                    Toast.makeText(this, "申请权限", Toast.LENGTH_LONG).show();
                    try {
                        List<String> providers = locationManager.getProviders(true);
                        if (providers.contains(LocationManager.NETWORK_PROVIDER)) {
                        //如果是Network
                            locationProvider = LocationManager.NETWORK_PROVIDER;
                        }else if (providers.contains(LocationManager.GPS_PROVIDER)) {
                        //如果是GPS
                            locationProvider = LocationManager.GPS_PROVIDER;
                        }
                        //监视地理位置变化
                        locationManager.requestLocationUpdates(locationProvider, 3000, 1, locationListener);
                        Location location = locationManager.getLastKnownLocation(locationProvider);
                        if (location != null) {
                            //不为空,显示地理位置经纬度
                            mLocal.setText("经度：" + location.getLongitude() + "，纬度：" + location.getLatitude() + "");
                        }
                    }catch (SecurityException e){
                        e.printStackTrace();
                    }
                } else {
                    Toast.makeText(this, "缺少权限", Toast.LENGTH_LONG).show();
                    finish();
                }
                break;
        }
}

@Override
protected void onDestroy() {
        super.onDestroy();
        locationManager.removeUpdates(locationListener);
}

activity_main.xml

<EditText
        android:id="@+id/local"
        android:hint="地点"
        android:textColor="#000000"
        android:textSize="16sp"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:padding="5dp"
        android:layout_below="@id/time"
        android:layout_marginTop="20dp"
        android:background="#FDDEDE"
        android:clickable="true"
        />

效果图如下：

明天开始建立数据库