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package com.example.location
 
import android.annotation.SuppressLint
import android.content.pm.PackageManager
import android.location.Location
import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.support.v4.app.ActivityCompat
import android.widget.Button
import android.widget.TextView
import com.google.android.gms.location.FusedLocationProviderClient
import com.google.android.gms.location.LocationServices
 
 
 
class MainActivity : AppCompatActivity() {
 
    private lateinit var userLocationProviderClient: FusedLocationProviderClient
    private var userAgreePermissionCode = 1
 
    @SuppressLint("SetTextI18n")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
 
        //  檢查並要求權限 => "onRequestPermissionsResult"
        val currentPermission = ActivityCompat.checkSelfPermission(this,android.Manifest.permission.ACCESS_FINE_LOCATION)
        if( currentPermission!=PackageManager.PERMISSION_GRANTED ) ActivityCompat.requestPermissions(this, arrayOf(android.Manifest.permission.ACCESS_FINE_LOCATION), userAgreePermissionCode)
 
		//  想在這邊只更新一次定位接著用 lastLocation 抓出座標
		//  要怎麼寫???
 
        //  獲取上一次定位座標按鈕
        findViewById<Button>(R.id.Locate).setOnClickListener{
            userLocationProviderClient = LocationServices.getFusedLocationProviderClient(this)
            userLocationProviderClient.lastLocation.addOnSuccessListener { location : Location? ->
 
                //  獲取上一次定位的座標 => 但如果沒紀錄可能為空
                if( (location?.longitude!=null) ){
                    val userLongitude = location.longitude
                    //  findViewById<TextView>(R.id.Longitude).text = userLongitude.toString()
                }
                if(location?.latitude!=null){
                    val userLatitude = location.latitude
                    //  findViewById<TextView>(R.id.Latitude).text = userLatitude.toString()
                }
            }
        }
 
        //  重置按鈕執行
        findViewById<Button>(R.id.Reset).setOnClickListener{
            //  findViewById<TextView>(R.id.Longitude).text = "經度(Longitude)"
            //  findViewById<TextView>(R.id.Latitude).text = "緯度(Latitude)"
        }
 
        //  離開按鈕執行
        findViewById<Button>(R.id.Close).setOnClickListener{
            finish()
        }
    }
 
    //  ----------------------------------------------------
    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
        when (requestCode) {
            userAgreePermissionCode -> {
                if ((grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED)){
                    //  Permission was granted.
                }else{
                    //  Permission denied.
                    finish()
                }
            }
            //  Other
            else -> {}
        }
    }
    //  ----------------------------------------------------
}

Main.java:1: error: ';' expected
package com.example.location
                            ^
Main.java:3: error: ';' expected
import android.annotation.SuppressLint
                                      ^
Main.java:4: error: ';' expected
import android.content.pm.PackageManager
                                        ^
Main.java:5: error: ';' expected
import android.location.Location
                                ^
Main.java:6: error: ';' expected
import android.support.v7.app.AppCompatActivity
                                               ^
Main.java:7: error: ';' expected
import android.os.Bundle
                        ^
Main.java:8: error: ';' expected
import android.support.v4.app.ActivityCompat
                                            ^
Main.java:9: error: ';' expected
import android.widget.Button
                            ^
Main.java:10: error: ';' expected
import android.widget.TextView
                              ^
Main.java:11: error: ';' expected
import com.google.android.gms.location.FusedLocationProviderClient
                                                                  ^
Main.java:12: error: ';' expected
import com.google.android.gms.location.LocationServices
                                                       ^
Main.java:16: error: '{' expected
class MainActivity : AppCompatActivity() {
                  ^
Main.java:18: error: ';' expected
    private lateinit var userLocationProviderClient: FusedLocationProviderClient
                        ^
Main.java:18: error: <identifier> expected
    private lateinit var userLocationProviderClient: FusedLocationProviderClient
                                                   ^
Main.java:18: error: <identifier> expected
    private lateinit var userLocationProviderClient: FusedLocationProviderClient
                                                                                ^
Main.java:21: error: illegal start of expression
    @SuppressLint("SetTextI18n")
    ^
Main.java:21: error: ';' expected
    @SuppressLint("SetTextI18n")
                                ^
Main.java:22: error: <identifier> expected
    override fun onCreate(savedInstanceState: Bundle?) {
                                            ^
Main.java:22: error: ';' expected
    override fun onCreate(savedInstanceState: Bundle?) {
                                             ^
Main.java:22: error: illegal start of type
    override fun onCreate(savedInstanceState: Bundle?) {
                                                    ^
Main.java:22: error: <identifier> expected
    override fun onCreate(savedInstanceState: Bundle?) {
                                                     ^
Main.java:22: error: ';' expected
    override fun onCreate(savedInstanceState: Bundle?) {
                                                      ^
Main.java:23: error: illegal start of type
        super.onCreate(savedInstanceState)
        ^
Main.java:23: error: <identifier> expected
        super.onCreate(savedInstanceState)
             ^
Main.java:23: error: ';' expected
        super.onCreate(savedInstanceState)
              ^
Main.java:23: error: illegal start of type
        super.onCreate(savedInstanceState)
                      ^
Main.java:23: error: ';' expected
        super.onCreate(savedInstanceState)
                                         ^
Main.java:24: error: invalid method declaration; return type required
        setContentView(R.layout.activity_main)
        ^
Main.java:24: error: <identifier> expected
        setContentView(R.layout.activity_main)
                                             ^
Main.java:24: error: ';' expected
        setContentView(R.layout.activity_main)
                                              ^
Main.java:34: error: illegal start of type
        findViewById<Button>(R.id.Locate).setOnClickListener{
                            ^
Main.java:34: error: '(' expected
        findViewById<Button>(R.id.Locate).setOnClickListener{
                             ^
Main.java:34: error: illegal start of type
        findViewById<Button>(R.id.Locate).setOnClickListener{
                              ^
Main.java:34: error: ';' expected
        findViewById<Button>(R.id.Locate).setOnClickListener{
                                 ^
Main.java:34: error: <identifier> expected
        findViewById<Button>(R.id.Locate).setOnClickListener{
                                        ^
Main.java:34: error: illegal start of type
        findViewById<Button>(R.id.Locate).setOnClickListener{
                                         ^
Main.java:34: error: ';' expected
        findViewById<Button>(R.id.Locate).setOnClickListener{
                                                            ^
Main.java:35: error: ';' expected
            userLocationProviderClient = LocationServices.getFusedLocationProviderClient(this)
                                                                                              ^
Main.java:36: error: not a statement
            userLocationProviderClient.lastLocation.addOnSuccessListener { location : Location? ->
                                                   ^
Main.java:36: error: ';' expected
            userLocationProviderClient.lastLocation.addOnSuccessListener { location : Location? ->
                                                                        ^
Main.java:36: error: illegal start of expression
            userLocationProviderClient.lastLocation.addOnSuccessListener { location : Location? ->
                                                                                                ^
Main.java:39: error: illegal start of expression
                if( (location?.longitude!=null) ){
                ^
Main.java:36: error: not a statement
            userLocationProviderClient.lastLocation.addOnSuccessListener { location : Location? ->
                                                                                              ^
Main.java:39: error: ';' expected
                if( (location?.longitude!=null) ){
                  ^
Main.java:39: error: illegal start of expression
                if( (location?.longitude!=null) ){
                              ^
Main.java:39: error: not a statement
                if( (location?.longitude!=null) ){
                    ^
Main.java:39: error: ';' expected
                if( (location?.longitude!=null) ){
                                               ^
Main.java:40: error: ';' expected
                    val userLongitude = location.longitude
                                                          ^
Main.java:43: error: illegal start of expression
                if(location?.latitude!=null){
                            ^
Main.java:44: error: ';' expected
                    val userLatitude = location.latitude
                                                        ^
Main.java:51: error: <identifier> expected
        findViewById<Button>(R.id.Reset).setOnClickListener{
                            ^
Main.java:51: error: <identifier> expected
        findViewById<Button>(R.id.Reset).setOnClickListener{
                                       ^
Main.java:51: error: ';' expected
        findViewById<Button>(R.id.Reset).setOnClickListener{
                                        ^
Main.java:57: error: <identifier> expected
        findViewById<Button>(R.id.Close).setOnClickListener{
                            ^
Main.java:57: error: <identifier> expected
        findViewById<Button>(R.id.Close).setOnClickListener{
                                       ^
Main.java:57: error: ';' expected
        findViewById<Button>(R.id.Close).setOnClickListener{
                                        ^
Main.java:58: error: ';' expected
            finish()
                    ^
Main.java:63: error: class, interface, or enum expected
    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
    ^
58 errors

Standard output is empty