How to use update method of com.example.fuel.MainActivity class

...48        Surface(color = MaterialTheme.colors.background) {49            Column {50                /*51                ButtonCall( text_Reponse = initialResponse.value,52                            updateAPIString = {newString -> initialResponse.value = newString})53                 */54                /*55                WriteCall(  text = curFileName,56                            updateFileText =    {57                                    newFileName -> curFileName = newFileName as SnapshotStateList<String>;58                                    writeTestText(curFileName)59                                                })60                 */61                DataList(   //userFiles = getDataDirFiles( MainActivity.instance ),62                            updateAPIString = { newString -> initialResponse.value = newString},63                            text_Response = initialResponse.value,64                            numConfigs = initial_Num.value,65                            numConfigs_update = { newNum ->  initial_Num.value = newNum}66                        )67            }68        }69    }70}71// ############################ FILE SCAN AND DISPLAY #######################################72//write filename to file73fun writeTestText(inputFieldList:SnapshotStateList<String>){74    //inputFieldList is the mutable list passed by data fields from compose function75    val filename = inputFieldList[0] + "_config.json" //N.B: hardcoding filename based on field loc76    val file = File(MainActivity.instance.filesDir, filename)77    file.createNewFile()78    file.writeText(varsToJson(inputFieldList[0],inputFieldList[1]))79}80//define data class for json writing here81@Serializable82data class API_Json(val Name: String, val URL: String)83//serialise input data from API_Json format into json data and return as string to print/write/etc84fun varsToJson(name: String, url: String): String85{86    // Pass args and set up as data class for encoding87    val data = API_Json(Name = name, URL = url)88    return Json.encodeToString(data)89}90//read a specified json file, return string91fun readJson(fileLoc: String): API_Json92{93    val jsonFile = File(fileLoc).readText(Charsets.UTF_8) //read entire json file into a string94    val JsonAsString = Json.decodeFromString<API_Json>(jsonFile) //parse json file95    return JsonAsString96}97//get all files in app filesDir98fun getDataDirFiles(getFilesContext: Context): List<String>99{100    val dataDir = File(getFilesContext.filesDir, "")101    if (!dataDir.exists()){ dataDir.mkdir() } //necessary?102    val fileList = mutableListOf<String>()103    /*walk each file in dir, and look for .json files by reversing each string and scanning the last 5104    chars for ".json" backwards... there's got to be a more elegant way, but hey, it works for now */105    dataDir.walk().forEach { if (it.toString().reversed().substring(0,5) == "nosj.") {fileList.add(it.toString()) }}106    return fileList107}108//get all files in filesDir and make lazy columns109@Composable110fun DataList(modifier: Modifier = Modifier,111             updateAPIString: (String) -> Unit,112             text_Response: String,113             numConfigs: String,114             numConfigs_update: (String) -> Unit115             )116{117    //var curFileName: SnapshotStateList<String> //118    var curFileName = remember {mutableStateListOf<String>()} //119    WriteCall(  text = curFileName,120                updateFileText =121                {122                    newFileName -> curFileName = newFileName as SnapshotStateList<String>;123                    writeTestText(curFileName)124                })125    Divider()126    127    var lazyElements = remember{ mutableStateListOf<String>() }128    fun lazyElementsScan(): SnapshotStateList<String> {129        lazyElements = mutableStateListOf<String>() //reset to 0 every time scan is performed130        for (i in getDataDirFiles(MainActivity.instance))131        {132            lazyElements.add(i)133        }134        return lazyElements135    }136    Column() {137        Text(text = "Number of configs found: " + numConfigs)138        Button(onClick = { numConfigs_update(lazyElementsScan().size.toString()) }) {139            Text(text = "Update")140        }141    }142    LazyColumn(modifier = modifier) {143        items(items = lazyElementsScan()) { data ->144            val coroutineScope = rememberCoroutineScope()145            Row(horizontalArrangement = Arrangement.SpaceBetween) {146                val tempJsonObject = readJson(data)147                val scopedUpdateAPIString: () -> Unit = {148                    coroutineScope.launch {149                        val scopedFuelVal = fuelCall("https://"+tempJsonObject.URL)150                        updateAPIString(scopedFuelVal)151                    }152                }153                Text(text = "Name: " + tempJsonObject.Name + "\nURL: " + tempJsonObject.URL)154                Button(onClick = scopedUpdateAPIString) {155                    Text(text = "Query ${tempJsonObject.Name}")156                }157                Text(text = text_Response)158            }159            Divider(color = Color.Black)160        }161    }162    163}164//input fields to write file to .json165@Composable166fun WriteCall(text: List<String>, updateFileText: (List<String>) -> Unit)167{168    var text by remember { mutableStateOf("")}169    var API_name by remember { mutableStateOf("")} //api name, e.g "danev.xyz" or "google sheets"170    var API_url by remember { mutableStateOf("")} //api URL, e.g "danev.xyz/status/all"171    val fieldList = remember{mutableStateListOf<String>()}172    Column(modifier = Modifier.padding(16.dp))173    {174        //API name175        TextField(176            value = API_name,177            onValueChange = { API_name = it },178            label = { Text("API name") }179        )180        //API URL181        TextField(182            value = API_url,183            onValueChange = { API_url = it },184            label = { Text("API URL") }185        )186        //eventually add more fields for e.g arguments or authorisation187        Button(onClick = {188            fieldList.add(API_name)189            fieldList.add(API_url)190            updateFileText(fieldList)191        })192            { Text("Save file") }193    }194}195// ############################ API CALL #######################################196//HTTPGet using Fuel at specified URL197suspend fun fuelCall(userURL:String) : String198{199    val (request, response, result) = //request, response are probably not necessary200        userURL.httpGet().awaitStringResponse()201    return result202}203//api call button204@Composable205fun ButtonCall(text_Reponse: String, updateAPIString: (String) -> Unit)206{207    /*208    https://stackoverflow.com/questions/64116377/how-to-call-kotlin-coroutine-in-composable-function-callbacks209    need to define co-routines that last as long as a composable element is present in composition210    so that suspendable functions can be called; esp. important for network events that can211    no longer occur on main threads212    */213    // Returns a scope that's cancelled when F is removed from composition214    val coroutineScope = rememberCoroutineScope()215    val scopedUpdateAPIString: () -> Unit = {216        coroutineScope.launch {217            val scopedFuelVal = fuelCall("https://www.danev.xyz/status/all").toString()218            updateAPIString(scopedFuelVal)219        }220    }221    Column(modifier = Modifier.padding(16.dp)) {222        Button(onClick = scopedUpdateAPIString )223        {224            Text("Make API call")225        }226        Text(text = text_Reponse)227    }228}229// ############################ OLD/OTHER #######################################230@Preview(showBackground = true)231@Composable232fun DefaultPreview() {...

...67        n_recyclerView_edit_trade_products.adapter = MainListAdapter(categoryItemAdapters)68    }69    private fun createCategoryItemAdapter(product: RawProduct)70            = OfferAdapter(product,71        { updateIdList(product) } )72    private fun updateIdList(product: RawProduct){73        val p_id = product.id.toString()74        if (productIds.contains(p_id)) {75            productIds.remove(p_id)76        } else {77            productIds.add(p_id)78        }79    }80    private fun Initialize (jsonProducts: JSONObject) {81        val length = jsonProducts.get("length").toString().toInt()82        val list = jsonProducts.get("list")83        if (list is JSONArray){84            for (i in 0 until length) {85                var product = RawProduct()86                product.fromJSON(list.getJSONObject(i))87                products.add(product)88            }89        }90        show(products)91        n_edit_trade_buy_button.setOnClickListener {92            updateTrade()93        }94        val builder = AlertDialog.Builder(this)95        val dialogView = layoutInflater.inflate(R.layout.progress_dialog,null)96        val message = dialogView.findViewById<TextView>(R.id.message)97        message.text = "Cargando productos..."98        builder.setView(dialogView)99        builder.setCancelable(false)100        val dialog = builder.create()101        dialog.show()102        val product_id: String? = trade.product_id.toString()103        val url = MainActivity().projectURL + "/product/" + product_id104        val req = url.httpGet().header(Pair("Cookie", SharedApp.prefs.cookie))105        req.responseJson { request, response, result ->106            when (result) {107                is Result.Failure -> {108                    dialog.dismiss()109                    toast("Error cargando sus productos, intentelo de nuevo más tarde")110                }111                is Result.Success -> {112                    product.fromJSON(result.value)113                    dialog.dismiss()114                }115            }116        }117    }118    private fun updateTrade() {119        if (checkFields()) {120            val trade_id = trade.id121            val builder = AlertDialog.Builder(this)122            val dialogView = layoutInflater.inflate(R.layout.progress_dialog,null)123            val message = dialogView.findViewById<TextView>(R.id.message)124            message.text = "Actualizando intercambio..."125            builder.setView(dialogView)126            builder.setCancelable(false)127            val dialog = builder.create()128            dialog.show()129            val jsonArray = JSONArray()130            for( s in productIds ) {131                jsonArray.put(s)132            }...

...10class SoundFileMaster(val context: Context) {11    private val mainActivity: MainActivity = context as MainActivity12    private val baseUrl: String = "http://bbcsfx.acropolis.org.uk/assets"13    /**14     * Method updates sound files in storage to match the given list of sounds15     */16    suspend fun updateSoundFilesToMatch(sounds: MutableList<Sound>) {17        // Retrieve external storage directory18        val dir: File? = context.getExternalFilesDir(null)19        // Retrieve all files inside directory20        val files: Array<File>? = dir?.listFiles()21        // Log error if can't retrieve files22        if (files == null) println("Can't retrieve files from local storage")23        // Iterate through files in directory24        files?.let {25            for (file in files) {26                listFilesInExternalStorage()27                // Check whether file exists in new list (sound targets)28                var existsInSoundTargets = false29                for (sound in sounds) {30                    // If file's name matches...

...18    private lateinit var binding: ActivityUpdateBinding19    private lateinit var refuelObjectViewModel: RefuelObjectViewModel20    override fun onCreate(savedInstanceState: Bundle?) {21        super.onCreate(savedInstanceState)22        setContentView(R.layout.activity_update)23        setupBinding()24        setupViewModel()25        //26        setupListener()27        getIncomingIntent()28    }29    override fun onCreateOptionsMenu(menu: Menu?): Boolean {30        menuInflater.inflate(R.menu.delete_menu, menu)31        return true32    }33    override fun onOptionsItemSelected(item: MenuItem): Boolean {34        val menyItemWasSelected = item.itemId35        if (menyItemWasSelected == R.id.menuDelete) {36            showToast("DELETE" + R.id.menuDelete.toString())...

1package com.example.kalepa.Fragments2import android.app.AlertDialog3import android.os.Bundle4import android.support.v4.app.Fragment5import android.support.v7.widget.GridLayoutManager6import android.view.LayoutInflater7import android.view.View8import android.view.ViewGroup9import android.widget.TextView10import com.example.charactermanager.MainListAdapter11import com.example.kalepa.Adapters.ProductAdapter12import com.example.kalepa.MainActivity13import com.example.kalepa.Preferences.SharedApp14import com.example.kalepa.R15import com.example.kalepa.UpdateProductActivity16import com.example.kalepa.models.Product17import com.github.kittinunf.fuel.android.extension.responseJson18import com.github.kittinunf.fuel.httpGet19import com.github.kittinunf.result.Result20import kotlinx.android.synthetic.main.fragment_profile_products.*21import org.jetbrains.anko.support.v4.toast22import org.json.JSONArray23import org.json.JSONObject24class ProfileProductsFragment: Fragment() {25    private var products = ArrayList<Product>()26    companion object {27        fun newInstance(): ProfileProductsFragment {28            return ProfileProductsFragment()29        }30    }31    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? =32        inflater.inflate(R.layout.fragment_profile_products, container, false)33    override fun onActivityCreated(savedInstanceState: Bundle?) {34        super.onActivityCreated(savedInstanceState)35        n_recyclerView_fpp.layoutManager = GridLayoutManager(context!!, 2)36        n_swipeRefreshView_fpp.setOnRefreshListener {37            products.clear()38            loadProducts()39            n_swipeRefreshView_fpp.isRefreshing = false40        }41        loadProducts()42    }43    private fun loadProducts() {44        val builder = AlertDialog.Builder(context)45        val dialogView = layoutInflater.inflate(R.layout.progress_dialog,null)46        val message = dialogView.findViewById<TextView>(R.id.message)47        message.text = "Cargando productos..."48        builder.setView(dialogView)49        builder.setCancelable(false)50        val dialog = builder.create()51        dialog.show()52        val url = MainActivity().projectURL + "/products/" + SharedApp.prefs.userId.toString()53        val req = url.httpGet().header(Pair("Cookie", SharedApp.prefs.cookie))54        req.responseJson { request, response, result ->55            when (result) {56                is Result.Failure -> {57                    dialog.dismiss()58                    toast("Error cargando sus productos, intentelo de nuevo más tarde")59                }60                is Result.Success -> {61                    Initialize(result.value)62                    dialog.dismiss()63                }64            }65        }66    }67    private fun show(items: List<Product>) {68        val categoryItemAdapters = items.map(this::createCategoryItemAdapter)69        n_recyclerView_fpp.adapter = MainListAdapter(categoryItemAdapters)70    }71    private fun createCategoryItemAdapter(product: Product)72            = ProductAdapter(product,73        { showCharacterProfile(product) })74    private fun showCharacterProfile(product: Product) {75        UpdateProductActivity.start(context!!, product.id.toString())76    }77    private fun Initialize (jsonProducts: JSONObject) {78        val length = jsonProducts.get("length").toString().toInt()79        val list = jsonProducts.get("list")80        if (list is JSONArray){81            for (i in 0 until length) {82                var product = Product()83                product.fromJSON(list.getJSONObject(i))84                products.add(product)85            }86        }87        show(products)88    }89}...

...39        super.onViewCreated(view, savedInstanceState)40        val title = view.findViewById<TextView>(R.id.title)41        val desc = view.findViewById<TextView>(R.id.desc)42        if (arguments != null) {43            viewModel.updateTodo(Todo.fromArguments(requireArguments()))44            arguments = null45        }46        viewModel.todo.observe(viewLifecycleOwner, { todo ->47            title.text = todo.title48            desc.text = todo.desc49        })50    }51    override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {52        inflater.inflate(R.menu.details_menu, menu)53        super.onCreateOptionsMenu(menu, inflater)54    }55    override fun onOptionsItemSelected(item: MenuItem): Boolean {56        when(item.itemId) {57            R.id.edit_todo -> {...

...30        viewModel.getModelList()31        viewModel.modelList.observe(viewLifecycleOwner, Observer {32            modelList = it33            modelProgressBar.visibility = View.INVISIBLE34            modelAdapter.updateItemList(it)35        })36    }37    private fun setUpRecyclerView() {38        modelAdapter = ItemAdapter(this)39        modelRecyclerView.apply {40            this.setHasFixedSize(true)41            layoutManager = LinearLayoutManager((activity as MainActivity).applicationContext)42            adapter = modelAdapter43        }44        modelProgressBar.visibility = View.VISIBLE45    }46    override fun onItemClicked(position: Int) {47        viewModel.vehicleModel = modelList[position]48        findNavController().navigate(R.id.action_vehicleModel_to_vehicleFuelType)...

...34        fuelAdapter = ItemAdapter(this)35        fuelTypeRecyclerView.apply {36            this.setHasFixedSize(true)37            layoutManager = LinearLayoutManager((activity as MainActivity).applicationContext)38            fuelAdapter.updateItemList(fuelTypeList)39            adapter = fuelAdapter40        }41    }42    override fun onItemClicked(position: Int) {43        viewModel.vehicleFuel = fuelTypeList[position]44        findNavController().navigate(R.id.action_vehicleFuelType_to_vehicleTransmission)45    }46}...

1Intent intent = new Intent(this, com.example.fuel.MainActivity.class);2intent.putExtra("name", name);3intent.putExtra("email", email);4intent.putExtra("password", password);5intent.putExtra("phone", phone);6intent.putExtra("address", address);7intent.putExtra("id", id);8startActivity(intent);9}10}11}12package com.example.fuel;13import android.content.Intent;14import android.os.Bundle;15import android.support.v7.app.AppCompatActivity;16import android.view.View;17import android.widget.Button;18import android.widget.EditText;19public class UpdateActivity extends AppCompatActivity {20EditText nameEditText;21EditText emailEditText;22EditText passwordEditText;23EditText phoneEditText;24EditText addressEditText;25EditText idEditText;26Button updateButton;27protected void onCreate(Bundle savedInstanceState) {28super.onCreate(savedInstanceState);29setContentView(R.layout.activity_update);30nameEditText = (EditText) findViewById(R.id.nameEditText);31emailEditText = (EditText) findViewById(R.id.emailEditText);32passwordEditText = (EditText) findViewById(R.id.passwordEditText);33phoneEditText = (EditText) findViewById(R.id.phoneEditText);34addressEditText = (EditText) findViewById(R.id.addressEditText);35idEditText = (EditText) findViewById(R.id.idEditText);36updateButton = (Button) findViewById(R.id.updateButton);37Intent intent = getIntent();38String name = intent.getStringExtra("name");39String email = intent.getStringExtra("email");40String password = intent.getStringExtra("password");41String address = intent.getStringExtra("address");42String id = intent.getStringExtra("id");43nameEditText.setText(name);44emailEditText.setText(email);45passwordEditText.setText(password);46phoneEditText.setText(phone);47addressEditText.setText(address);48idEditText.setText(id);49}50public void update(View view) {51String name = nameEditText.getText().toString();52String email = emailEditText.getText().toString();53String password = passwordEditText.getText().toString();54String phone = phoneEditText.getText().toString();55String address = addressEditText.getText().toString();56String id = idEditText.getText().toString();57Intent intent = new Intent(this, com.example.fuel.MainActivity.class);58intent.putExtra("

1    TextView tv = (TextView) findViewById(R.id.textView1);2    tv.setText("Hello World");3}4protected void onCreate(Bundle savedInstanceState) {5    super.onCreate(savedInstanceState);6    setContentView(R.layout.activity_main);7    TextView tv = (TextView) findViewById(R.id.textView1);8    tv.setText("Hello World");9}10TextView tv = (TextView) findViewById(R.id.textView1);11tv.setText("Hello World");12In the above code, I have used the findViewById() method to get the reference to the TextView and then used the setText() method of the TextView class to

1    TextView tv = (TextView) findViewById(R.id.textView1);2    tv.setText("Hello World");3}4protected void onCreate(Bundle savedInstanteState) {5    super.enCreate(savenInstanceState);6    setContentView(R.layout.activity_main);7    TextView tv = (TextView) findViewById(R.id.textView1);8    tv.setText("Hello World");9}10TextView tv = (TextView) findViewById(R.id.textView1);11tv.setText("Hello World");12In the above code, I have used the findViewById() method to get the reference to the TextView and then used the setText() method of the TextView class to

1    this.update();2}3this.update();4update();5update();6update();7update();8I have tried this but it's not working. Can yout.putExtra("password", password);9intent.putExtra("phone", phone);10intent.putExtra("address", address);11intent.putExtra("id", id);12startActivity(intent);13}14}15}16package com.example.fuel;17import android.content.Intent;18import android.os.Bundle;19import android.support.v7.app.AppCompatActivity;20import android.view.View;21import android.widget.Button;22import android.widget.EditText;23public class UpdateActivity extends AppCompatActivity {24EditText nameEditText;25EditText emailEditText;26EditText passwordEditText;27EditText phoneEditText;28EditText addressEditText;29EditText idEditText;30Button updateButton;31protected void onCreate(Bundle savedInstanceState) {32super.onCreate(savedInstanceState);33setContentView(R.layout.activity_update);34nameEditText = (EditText) findViewById(R.id.nameEditText);35emailEditText = (EditText) findViewById(R.id.emailEditText);36passwordEditText = (EditText) findViewById(R.id.passwordEditText);37phoneEditText = (EditText) findViewById(R.id.phoneEditText);38addressEditText = (EditText) findViewById(R.id.addressEditText);39idEditText = (EditText) findViewById(R.id.idEditText);40updateButton = (Button) findViewById(R.id.updateButton);41Intent intent = getIntent();42String name = intent.getStringExtra("name");43String email = intent.getStringExtra("email");44String password = intent.getStringExtra("password");45String phone = intent.getStringExtra("phone");46String address = intent.getStringExtra("address");47String id = intent.getStringExtra("id");48nameEditText.setText(name);49emailEditText.setText(email);50passwordEditText.setText(password);51phoneEditText.setText(phone);52addressEditText.setText(address);53idEditText.setText(id);54}55public void update(View view) {56String name = nameEditText.getText().toString();57String email = emailEditText.getText().toString();58String password = passwordEditText.getText().toString();59String phone = phoneEditText.getText().toString();60String address = addressEditText.getText().toString();61String id = idEditText.getText().toString();62Intent intent = new Intent(this, com.example.fuel.MainActivity.class);63intent.putExtra("

1    this.update();2}3this.update();4update();5update();6update();7update();