Java Can´；不要使用意图将数据移动到其他活动
这是我的第一个活动，每当我试图使用Intent通过双精度“纬度和经度”时，我的应用程序就会崩溃，我不知道还能做什么 我看到，如果我不把星触觉（意图）我不会崩溃Java Can´；不要使用意图将数据移动到其他活动,java,android,android-studio,methods,crash,Java,Android,Android Studio,Methods,Crash,这是我的第一个活动，每当我试图使用Intent通过双精度“纬度和经度”时，我的应用程序就会崩溃，我不知道还能做什么 我看到，如果我不把星触觉（意图）我不会崩溃 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // requestP
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//
requestPermission();
//
client = LocationServices.getFusedLocationProviderClient(this);
Button button = findViewById(R.id.getLocation);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(ActivityCompat.checkSelfPermission(MainActivity.this, ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED){
return;
}
client.getLastLocation().addOnSuccessListener(MainActivity.this, new OnSuccessListener<Location>() {
@Override
public void onSuccess(Location location) {
if (location != null) {
TextView textView = findViewById(R.id.location);
textView.setText(location.toString());
}
double latitude = location.getLatitude();
double longitude = location.getLongitude();
Intent intent = new Intent(getApplicationContext(), MapsActivity.class);
intent.putExtra("Lat",latitude);
intent.putExtra("Lon",longitude);
startActivity(intent);
}
});
}
});
@覆盖
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
//
requestPermission（）；
//
client=LocationServices.getFusedLocationProviderClient（此）；
按钮按钮=findViewById（R.id.getLocation）；
setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图）{
if（ActivityCompat.checkSelfPermission（MainActivity.this，访问\u FINE\u位置）！=PackageManager.PERMISSION\u已授予）{
回来
}
client.getLastLocation（）.addOnSuccessListener（MainActivity.this，新的OnSuccessListener（））{
@凌驾
成功时的公共无效（位置）{
如果（位置！=null）{
TextView TextView=findViewById（R.id.location）；
textView.setText（location.toString（））；
}
双纬度=location.getLatitude（）；
double longitude=location.getLongitude（）；
Intent Intent=新的Intent（getApplicationContext（），MapsActivity.class）；
意向。额外（“纬度”，纬度）；
意图。putExtra（“Lon”，经度）；
星触觉（意向）；
}
});
}
});
public class MapsActivity extends AppCompatActivity implements OnMapReadyCallback {
private GoogleMap mMap;
public static final String FILENAME = "filename";
private ArrayList<Entity> selectedSat;
String fileName;
MenuItem favItem;
private DecimalFormat df = new DecimalFormat("#.00");
private Frame earthFixedFrame;
private OneAxisEllipsoid earth;
protected GeodeticPoint pointPlot = null;
protected Marker currentMarker = null;
protected Polyline line = null;
protected Polyline pastLine = null;
public static final int PATTERN_DASH_LENGTH_PX = 20;
public static final int PATTERN_GAP_LENGTH_PX = 20;
public static final PatternItem DOT = new Dot();
public static final PatternItem DASH = new Dash(PATTERN_DASH_LENGTH_PX);
public static final PatternItem GAP = new Gap(PATTERN_GAP_LENGTH_PX);
public static final List<PatternItem> PATTERN_POLYGON_ALPHA = Arrays.asList(GAP, DASH);
protected ArrayList<Marker> markers = new ArrayList<>();
boolean initial = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_ACTION_BAR);
Drawable fav = getDrawable(R.drawable.favoritesicon);
fav.setColorFilter(Color.parseColor("#FFFFFF"), PorterDuff.Mode.MULTIPLY);
selectedSat = SatelliteSelectActivity.getSelectedSat(); //Pulls a list of selected satellites from the previous activity
System.out.println(selectedSat.get(0).getName());
setContentView(R.layout.activity_maps);
ActionBar ab = getSupportActionBar();
if (ab != null) {
ab.setTitle(selectedSat.get(0).getName().trim());
}
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
fileName = getIntent().getStringExtra(FILENAME);
int i = 0;
System.out.println(selectedSat.get(i).getName()); //Prints Entity Name to the Console
try {
System.out.println("Velocidad:");
System.out.println(selectedSat.get(i).getVelocity()); //Prints the velocity of the entity
} catch (OrekitException e) {
e.printStackTrace();
}
}
public void onBackPressed() { //Runs when you exit the activity
selectedSat.clear(); //Clears the satellite list
System.out.println("Terminar con el mapa"); //Prints to the console that we are done with the Maps activity
initial = false; //Boolean variable specifying we are dealing with the first satellite
Intent intent = new Intent(getApplicationContext(), SatelliteSelectActivity.class);
startActivity(intent);
this.finish(); //Closes the activity
}
@Override
public boolean onCreateOptionsMenu(Menu menu) { //Creates action bar in the MapsActivity UI
MenuInflater item = getMenuInflater(); //Specifies the item fit
item.inflate(R.menu.actionbar, menu); //Fits the menu to the item fit
setTitle("SatFun"); //Sets the action bar title
favItem = menu.findItem(R.id.actionbar_fav);
checkifFavorite(); // see if sat is favorite
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) { //Called when icon in the action bar is selected
switch (item.getItemId()) {
case R.id.actionbar_fav:
selectedSat = SatelliteSelectActivity.getSelectedSat();
String fileName = getIntent().getStringExtra(FILENAME);
if (!Favorites.contains(selectedSat.get(0).getName(), fileName, getApplicationContext())) {
item.setIcon(R.drawable.favoritesicon_filled);
for (int i = 0; i < selectedSat.size(); i++)
try {
Favorites.addFavorite(selectedSat.get(i).getName(), selectedSat.get(i).getLine1(), selectedSat.get(i).getLine2(), fileName, getApplicationContext());
return true;
} catch (OrekitException e) {
e.printStackTrace();
}
} else {
item.setIcon(R.drawable.favoritesicon);
for (int i = 0; i < selectedSat.size(); i++) {
try {
boolean removed = Favorites.removeFavorite(selectedSat.get(i).getName(), selectedSat.get(i).getLine1(), selectedSat.get(i).getLine2(), fileName, getApplicationContext());
System.out.print(removed);
} catch (OrekitException e) {
e.printStackTrace();
}
}
return true;
}
case R.id.actionbar_info:
ConstraintLayout satInfo = findViewById(R.id.satelliteInfo);
if (satInfo.getVisibility() == View.INVISIBLE) {
satInfo.setVisibility(View.VISIBLE);
} else {
satInfo.setVisibility(View.INVISIBLE);
}
}
return super.onOptionsItemSelected(item);
}
@Override
public void onMapReady(final GoogleMap googleMap) {
mMap = googleMap;
mapUpdater(getCreatedTime());
}
private int incr = 0;
public void mapUpdater(Date date) {
if (date == null) {
dateTime = getCreatedTime();
} else {
dateTime = date;
}
new Thread() {
public void run() {
System.out.println("Nueva");
while (incr++ < 1000) {
try {
runOnUiThread(new Runnable() {
@Override
public void run() {
try {
updateMap();
} catch (OrekitException e) {
e.printStackTrace();
}
}
});
Thread.sleep(10000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}.start();
}
private void setPastLine(AbsoluteDate date, double satPeriod) {
ArrayList<LatLng> plotPoints = new ArrayList<>();
for (int k = 0; k < 50; k++) {
int period = (int) Math.round(satPeriod);
int periodMin = (period / 100);
System.out.println("DATE: " + date);
pointPlot = updatePosition(date, 0);
System.out.println("FRAGMENT (width, height): " + findViewById(R.id.map).getWidth() + " " + findViewById(R.id.map).getHeight());
double longitude = pointPlot.getLongitude() * 180 / Math.PI;
double latitude = pointPlot.getLatitude() * 180 / Math.PI;
//Creates map objects
LatLng point_a = new LatLng(latitude, longitude);
MarkerOptions point = new MarkerOptions().position(point_a);
plotPoints.add(point_a);
date = new AbsoluteDate(date, -periodMin);
}
pastLine = mMap.addPolyline(new PolylineOptions().addAll(plotPoints));
pastLine.setWidth(5);//Sets width of polyline
pastLine.setPattern(PATTERN_POLYGON_ALPHA);
pastLine.setColor(Color.RED);
}
private Date getCreatedTime() { //Creates a new date with the current time and returns it
return new Date();
}
private Date dateTime = null;
private void updateMap() throws OrekitException {
System.out.println("Entering update map");
if (dateTime == null) {
dateTime = getCreatedTime();
}
AbsoluteDate date;
for (int i = 0; i < selectedSat.size(); i++) {
double satNum = selectedSat.get(i).getSatNum();
TextView satNumberText = findViewById(R.id.satelliteNumber);
String satelliteNumberString = "Número De Satelite: " + Math.round(satNum);
satNumberText.setText(satelliteNumberString);
TimeScale utc = TimeScalesFactory.getUTC();
ArrayList<LatLng> plotPoints = new ArrayList<>();
Calendar calendar = GregorianCalendar.getInstance();
double satPeriod = selectedSat.get(i).getPeriod();
int period = (int) Math.round(satPeriod);
int periodMin = (period / 100);
System.out.println("Interval: " + periodMin);
calendar.setTime(dateTime);
System.out.println(calendar.get(Calendar.YEAR));
calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
date = new AbsoluteDate(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH) + 1, calendar.get(Calendar.DAY_OF_MONTH), calendar.get(Calendar.HOUR_OF_DAY), calendar.get(Calendar.MINUTE), calendar.get(Calendar.SECOND), utc); //creates orekit absolute date from calender
this.initializeFrames();
pointPlot = updatePosition(date, 0);
String velocityString = df.format(selectedSat.get(i).getVelocity() * 3.6);
velocityString = "Velocidad: " + velocityString + "km/h";
TextView satVelocity = findViewById(R.id.velocity);
satVelocity.setText(velocityString);
//Finds longitude
double longitude = pointPlot.getLongitude() * 180 / Math.PI;
String longitudeString = "Longitud: " + df.format(longitude);
TextView satLongitude = findViewById(R.id.satLongitude);
satLongitude.setText(longitudeString);
//Finds latitude
double latitude = pointPlot.getLatitude() * 180 / Math.PI;
String latitudeString = "Latitud: " + df.format(latitude);
TextView satLatitude = findViewById(R.id.satLatitude);
satLatitude.setText(latitudeString);
double altitude = pointPlot.getAltitude() / 1000;
TextView satAltitude = findViewById(R.id.satAltitude);
String altitudeString = "Altitud: " + df.format(altitude) + "km";
satAltitude.setText(altitudeString);
//CALCULOS
double longi= 78.5082717;
double lati=0.245496;
double delta1 = Math.abs(longitude);
double delta = Math.abs(delta1-longi);
double elev=Math.atan(((Math.cos(lati)*Math.cos(delta))-(6378/42164))/Math.sin(Math.acos(Math.cos(lati)*Math.cos(delta))));
double az1 = Math.tan(Math.toDegrees(delta));
double az2 = Math.sin(Math.toDegrees(lati));
double az3 = Math.toDegrees(az1/az2);
double az = Math.abs(Math.toDegrees(Math.atan(az3)));
double dis1 = (Math.cos(Math.toRadians(lati)));
double dis2 = (Math.cos(Math.toRadians(delta)));
double dis3 = (dis1*dis2);
double dis4 = (1-dis3);
double dis5 = (0.41999*dis4);
double dis6 = (1+dis5);
double dis = (35786.04*(Math.sqrt(dis6)));
TextView satdelta = findViewById(R.id.satdelta);
String deltaString = "Delta: " + df.format(delta);
satdelta.setText(deltaString);
TextView azimuts = findViewById(R.id.azimut);
String AzimutString = "Azimut: " + df.format(az);
azimuts.setText(AzimutString);
TextView disf = findViewById(R.id.distancia);
String disString = "Distancia: " + df.format(dis) + "Km";
disf.setText(disString);
//////////////////////////////////////////////////////////
System.out.println("Latitud: " + latitude);
System.out.println("Longitud: " + longitude);
System.out.println("PERIODO: " + periodMin);
for (int k = 0; k < 300; k++) {
System.out.println("DATE: " + date);
pointPlot = updatePosition(date, i);
System.out.println("FRAGMENT (width, height): " + findViewById(R.id.map).getWidth() + " " + findViewById(R.id.map).getHeight());
longitude = pointPlot.getLongitude() * 180 / Math.PI;
latitude = pointPlot.getLatitude() * 180 / Math.PI;
//Creates map objects
LatLng point_a = new LatLng(latitude, longitude);
MarkerOptions pointA = new MarkerOptions().position(point_a);
if (k == 0) {
if(currentMarker != null) {
currentMarker.remove();
}
if(line != null) {
line.remove();
}
if(pastLine != null) {
pastLine.remove();
}
}
pointA.title(selectedSat.get(i).getName().trim() + "Poscicion Actual");
if (initial) {
initial = false;
mMap.moveCamera(CameraUpdateFactory.newLatLng(point_a));
}
}
plotPoints.add(point_a);
date = new AbsoluteDate(date, periodMin);
}
date = new AbsoluteDate(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH) + 1, calendar.get(Calendar.DAY_OF_MONTH), calendar.get(Calendar.HOUR_OF_DAY), calendar.get(Calendar.MINUTE), calendar.get(Calendar.SECOND), utc); //creates orekit absolute date from calender
setPastLine(date, satPeriod);
line = mMap.addPolyline(new PolylineOptions().addAll(plotPoints));
line.setWidth(5);
line.setColor(Color.RED);
}
}
private void initializeFrames() {
try {
Frame f;
f = CelestialBodyFactory.getEarth().getBodyOrientedFrame();
earthFixedFrame = FramesFactory.getTEME();
earth = new OneAxisEllipsoid(
Constants.WGS84_EARTH_EQUATORIAL_RADIUS,
Constants.WGS84_EARTH_FLATTENING,
f);
} catch (OrekitException e) {
System.out.println("ERROR");
e.printStackTrace();
}
}
private GeodeticPoint updatePosition(AbsoluteDate date, int i) {
GeodeticPoint point = null;
SpacecraftState scs = selectedSat.get(i).updateState(date);
System.out.println(scs);
System.out.println(scs.getPVCoordinates().getPosition());
System.out.println(scs.getDate());
System.out.println(earthFixedFrame);
try {
point = earth.transform(selectedSat.get(i).getVector(date), earthFixedFrame, date);
} catch (OrekitException e) {
System.out.println("Fallo al realizar la conversion cartesiana");
e.printStackTrace();
}
return point;
}
private void checkifFavorite() {
if (fileName.contains("favorites_")) {
fileName = fileName.replace("favorites_", "");
}
File test1 = new File(this.getFilesDir(), "favorites_" + fileName);
if (test1.exists()) {
System.out.println("file exists");
try {
ArrayList<String> favs = celestrakData.getNames("favorites_" + fileName, this);
if (favs.contains(selectedSat.get(0).getName())) {
System.out.println("already is a favorite");
favItem.setIcon(R.drawable.favoritesicon_filled);
}
} catch (IOException e) {
e.printStackTrace();
}
} else {
System.out.println("file doesnt exist");
}
}
公共类MapsActivity扩展了AppCompatActivity在MapReadyCallback上的实现{
私有谷歌地图；
公共静态最终字符串FILENAME=“FILENAME”；
专用阵列列表selectedSat；
字符串文件名；
梅努特姆·法维滕；
私有DecimalFormat df=新的DecimalFormat（#.00”）；
专用框架接地固定框架；
椭圆地球；
受保护的大地测量点点图=空；
受保护的标记currentMarker=null；
受保护的多段线=空；
受保护的多段线pastLine=null；
公共静态最终整数模式_破折号_长度_PX=20；
公共静态最终整数模式\u间距\u长度\u PX=20；
公共静态最终模式项目点=新点（）；
公共静态最终模式项目破折号=新破折号（模式破折号长度PX）；
公共静态最终图案项目间隙=新间隙（图案间隙长度x）；
公共静态最终列表模式\多边形\α=数组.asList（间隙，破折号）；
受保护的ArrayList标记=新建ArrayList（）；
布尔初始值=真；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
requestWindowFeature（窗口.功能\u操作\u栏）；
可拉伸fav=可拉伸（R.Drawable.favoritesicon）；
fav.setColorFilter（Color.parseColor（#FFFFFF）），PorterDuff.Mode.MULTIPLY；
selectedSat=SatelliteSelectActivity.getSelectedSat（）；//从上一个活动中提取选定卫星的列表
System.out.println（selectedSat.get（0.getName（））；
setContentView（R.layout.activity_映射）；
ActionBar ab=getSupportActionBar（）；
如果（ab！=null）{
ab.setTitle（selectedSat.get（0.getName（）.trim（））；
}
//获取SupportMapFragment，并在地图准备好使用时收到通知。
SupportMapFragment mapFragment=（SupportMapFragment）getSupportFragmentManager（）
.findFragmentById（R.id.map）；
getMapAsync（这个）；
fileName=getIntent（）.getStringExtra（文件名）；
int i=0；
System.out.println（selectedSat.get（i）.getName（））；//将实体名称打印到控制台
试一试{
System.out.println（“Velocidad:”）；
System.out.println（selectedSat.get（i.getVelocity（））；//打印实体的速度
}渔获物（Orekite）{
e、 printStackTrace（）；
}
}
public void onBackPressed（）{//在退出活动时运行
selectedSat.clear（）；//清除卫星列表
System.out.println（“Terminar con el mapa”）；//打印到控制台，表明我们已经完成了映射活动
initial=false；//指定我们正在处理第一个卫星的布尔变量
Intent Intent=新的Intent（getApplicationContext（），SatelliteSelectActivity.class）；
星触觉（意向）；
this.finish（）；//关闭活动
}
@凌驾
公共布尔onCreateOptions菜单（菜单菜单）{//在MapsActivity UI中创建操作栏
MenuInflater item=getMenuInflater（）；//指定项目的匹配
item.inflate（R.menu.actionbar，menu）；//使菜单与项目匹配
setTitle（“SatFun”）；//设置操作栏标题
favItem=menu.findItem（R.id.actionbar\u fav）；
checkifFavorite（）；//查看sat是否最受欢迎
返回super.onCreateOptions菜单（菜单）；
}
@凌驾
公共布尔值OnOptions ItemSelected（MenuItem项）{//在选择操作栏中的图标时调用
开关（item.getItemId（））{
案例R.id.actionbar\u fav：
selectedSat=SatelliteSelectActivity.getSelectedSat（）；
字符串文件名=getIntent（）.getStringExtra（文件名）；
如果（！Favorites.contains（selectedSat.get（0）.getName（），fileName，getApplicationContext（）））{
项目设置图标（右侧可绘制、收藏夹图标填充）；
对于（int i=0；i Intent intent = new Intent(yourActivityName.this, MapsActivity.class);