Develop Reference

Howto getExtras from a local broadcast Intent in react-native

in my React-Native opened project,
I want to receive the data (extra text) sent by another local service app named "scanservice" on its intent output (broadcast) on a Action named "scanservice.data" ,
and I do not know how to start & write that : someone can help me please?
I have tried without success HeadlessJs, Linking solutions.

I put some more info I got and I please ask for some corrections since I am null in Java writting :
I want to make a native Android module (in java) (as described on RN site : https://reactnative.dev/docs/native-modules-android)
to catch the text ('extra_text') sent by an intent of another app, named "manuf".
The class 'scan_intent.java' I wrote here has many mistakes (with "//error":
package com.intent_scan;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;
import org.w3c.dom.Text;
public class ScanIntent extends ReactContextBaseJavaModule {
//constructor
// normaly : "public class ScanIntent extends BroadcastReceiver" : how to add this ?
public ScanIntent(ReactApplicationContext reactContext) {
super(reactContext);
}
#Override
public String getName() {
return "ScanIntent";
}
//Custom function that we are going to export to JS
#ReactMethod
public void onReceive(Context context, Intent intent, String extra_text){
if ("manuf.scanservice.data".equals(intent.getAction()))
{
getReactApplicationContext().registerReceiver //error on registerR...
try {
Bundle extras = intent.getExtras();
if (extras != null) {
extra_text = extras.getString("text"); //error : this value will be returned ?
}
} catch (Exception e) {
System.out.println(e.getMessage());
}
}
}}
thank you !

What should I do with the "java.lang.AssertionError" error on my Android Studio activity due to a null object response of my website API (Retrofit)?

I am having a problem with the API that I have implemented to my website that is connected to an activity in the Android application that I am developing. According to the Logcat of my Android Studio,
that line 118 of the ForgotPassword.java of my Android application
is throwing the java.lang.AssertionError. I have studied the problem again, then learned that the response of the API that is implemented on my website is being read by my Android application as null, thus with the aforementioned error.
I have also tried to solve the problem by doing the following:
Created a separate response class called ForgotPassRP with the same variables, because the DataRP response class is being used by other classes.
Updated the version of the retrofit that is implemented in my
build.grade(:app) from 2.7.2 to 2.9.0 and the retrofit2:converter-gson from 2.5.0 to 2.9.0.
Currently, I am still finding a solution by digging more about REST APIs on websites and Retrofit on Android, and I will implement anything new that I can learn from these. So am I missing something on my website, and Android code, or are there variables that are missing, while I am trying to do a POST method to the API that I have implemented to my website?
These are the following body of codes that I have analyzed so far that are connected to the problem (java.lang.AssertionError) that I am encountering on my Android application
The screenshot of the actual error that is being shown in the Logcat of my Android Studio:
Website:
1. APIS.php
//This is where the #POST method from my Android application API interface of the "ForgotPassword.java" is communicating with
public function forgot_password_post()
{
$response = array();
$user_info = $this->common_model->check_email($this->get_param['email'])[0];
if (!empty($user_info))
{
$this->load->helper("rendomPassword");
$info['new_password'] = get_random_password();
$updateData = array(
'user_password' => md5($info['new_password'])
);
$data_arr = array(
'email' => $user_info->user_email,
'password' => $info['new_password']
);
if ($this->common_model->update($updateData, $user_info->id, 'tbl_users')) {
$subject = $this->app_name . ' - ' . $this->lang->line('forgot_password_lbl');
$body = $this->load->view('admin/emails/forgot_password.php', $data_arr, TRUE);
if (send_email($user_info->user_email, $user_info->user_name, $subject, $body))
{
$row_info = array('success' => '1', 'msg' => $this->lang->line('password_sent_mail'));
}
else
{
$row_info = array('success' => '0', $this->lang->line('email_not_sent'));
}
}
}
else
{
$row_info = array('success' => '0', 'msg' => $this->lang->line('email_not_found'));
}
$this->set_response($row_info, REST_Controller::HTTP_OK);
}
Android Application
1. ForgotPassword.java
package com.example.mototecxecommerceapp.activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import com.example.mototecxecommerceapp.R;
import com.example.mototecxecommerceapp.response.DataRP;
import com.example.mototecxecommerceapp.response.ForgotPassRP;
import com.example.mototecxecommerceapp.rest.ApiClient;
import com.example.mototecxecommerceapp.rest.ApiInterface;
import com.example.mototecxecommerceapp.util.API;
import com.example.mototecxecommerceapp.util.ConstantApi;
import com.example.mototecxecommerceapp.util.Method;
import com.google.android.material.appbar.MaterialToolbar;
import com.google.android.material.button.MaterialButton;
import com.google.android.material.textfield.TextInputEditText;
import com.google.gson.Gson;
import com.google.gson.JsonObject;
import org.jetbrains.annotations.NotNull;
import io.github.inflationx.viewpump.ViewPumpContextWrapper;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
public class ForgetPassword extends AppCompatActivity {
private Method method;
private TextInputEditText editText;
private ProgressDialog progressDialog;
private InputMethodManager imm;
#Override
protected void attachBaseContext(Context newBase) {
super.attachBaseContext(ViewPumpContextWrapper.wrap(newBase));
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fp);
method = new Method(ForgetPassword.this);
method.forceRTLIfSupported();
progressDialog = new ProgressDialog(ForgetPassword.this);
imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
MaterialToolbar toolbar = findViewById(R.id.toolbar_fp);
toolbar.setTitle(getResources().getString(R.string.forget_password));
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
editText = findViewById(R.id.editText_fp);
MaterialButton button = findViewById(R.id.button_fp);
button.setOnClickListener(v -> {
String string_fp = editText.getText().toString();
editText.setError(null);
if (!isValidMail(string_fp) || string_fp.isEmpty()) {
editText.requestFocus();
editText.setError(getResources().getString(R.string.please_enter_email));
} else {
editText.clearFocus();
imm.hideSoftInputFromWindow(editText.getWindowToken(), 0);
if (method.isNetworkAvailable()) {
forgetPassword(string_fp);
} else {
method.alertBox(getResources().getString(R.string.internet_connection));
}
}
});
}
private boolean isValidMail(String email) {
return android.util.Patterns.EMAIL_ADDRESS.matcher(email).matches();
}
public void forgetPassword(String sendEmail) {
progressDialog.show();
progressDialog.setMessage(getResources().getString(R.string.loading));
progressDialog.setCancelable(false);
JsonObject jsObj = (JsonObject) new Gson().toJsonTree(new API(ForgetPassword.this));
jsObj.addProperty("email", sendEmail);
ApiInterface apiService = ApiClient.getClient().create(ApiInterface.class);
Call<DataRP> call = apiService.getForgotPass(API.toBase64(jsObj.toString()));
call.enqueue(new Callback<DataRP>() {
#Override
public void onResponse(#NotNull Call<DataRP> call, #NotNull Response<DataRP> response) {
try {
DataRP dataRP = response.body();
assert dataRP != null; //This is the part of the code where the java.lang.AssertionError is being thrown.
if (dataRP.getStatus().equals("1")) {
if (dataRP.getSuccess().equals("1")) {
editText.setText("");
}
method.alertBox(dataRP.getMsg());
} else {
method.alertBox(dataRP.getMessage());
}
} catch (Exception e) {
Log.d(ConstantApi.exceptionError, e.toString());
method.alertBox(getResources().getString(R.string.failed_response));
}
progressDialog.dismiss();
}
#Override
public void onFailure(#NotNull Call<DataRP> call, #NotNull Throwable t) {
// Log error here since request failed
Log.e(ConstantApi.failApi, t.toString());
progressDialog.dismiss();
method.alertBox(getResources().getString(R.string.failed_response));
}
});
}
#Override
public boolean onSupportNavigateUp() {
onBackPressed();
return true;
}
}
2. ApiInterface.java
//This is the post method that is being sent to the forgot password API of my website.
#POST("apis/forgot_password")
#FormUrlEncoded
Call<DataRP> getForgotPass(#Field("data") String data);
3. DataRP.java
package com.example.mototecxecommerceapp.response;
import com.google.gson.annotations.SerializedName;
import java.io.Serializable;
//This is the response from the #POST method.
public class DataRP implements Serializable {
#SerializedName("status")
private String status;
#SerializedName("message")
private String message;
#SerializedName("success")
private String success;
#SerializedName("msg")
private String msg;
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public String getSuccess() {
return success;
}
public void setSuccess(String success) {
this.success = success;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
}
I am also including the screenshot of the API logs that are being stored in the database that I have integrated into my website. This part is what seems to be the response of the "apis/forgot_password", whenever a post method that is thrown by my Android application is executed.
The SQL database of my website showing the logs related to "apis/forgotpassword"
This is also my first time asking a question in StackOverflow. So please bear with any "rookie mistakes" with the format/structure of the question that I have posted :)

In the android application development most used Retrofit2 Retrofit2 Documention
Then Generate Response Model Class (Call API using Postman). Create a Response Model with JSON
Source type:> JSON. Annotation style:>Gson.
Use this code in the "onResponse" method section.
if (response.isSuccessful()) {
if (response.body() != null) {
DataRP dataRp=response.body();
//code statement... } }

When I run the Codename One HelloWorld Java Program from the Codename One HelloWorld Tutorial, I get an error

When I run the Codename One HelloWorld Java Program from the Codename One HelloWorld Tutorial video, I get this error:
java: cannot find symbol
symbol: class Button
location: class com.acmecorp.appname.AppName
I think I'm missing an import for class Button. How do I add the import statement for class Button so that the compilation won't have this error?
Here is my source code:
package com.acmecorp.appname;
import static com.codename1.ui.CN.*;
import com.codename1.ui.Display;
import com.codename1.ui.Form;
import com.codename1.ui.Dialog;
import com.codename1.ui.Label;
import com.codename1.ui.plaf.UIManager;
import com.codename1.ui.util.Resources;
import com.codename1.io.Log;
import com.codename1.ui.Toolbar;
import java.io.IOException;
import com.codename1.ui.layouts.BoxLayout;
import com.codename1.io.NetworkEvent;
/**
* This file was generated by Codename One for the purpose
* of building native mobile applications using Java.
*/
public class AppName {
private Form current;
private Resources theme;
public void init(Object context) {
// use two network threads instead of one
updateNetworkThreadCount(2);
theme = UIManager.initFirstTheme("/theme");
// Enable Toolbar on all Forms by default
Toolbar.setGlobalToolbar(true);
// Pro only feature
Log.bindCrashProtection(true);
addNetworkErrorListener(err -> {
// prevent the event from propagating
err.consume();
if(err.getError() != null) {
Log.e(err.getError());
}
Log.sendLogAsync();
Dialog.show("Connection Error", "There was a networking error in the connection to " + err.getConnectionRequest().getUrl(), "OK", null);
});
}
public void start() {
if(current != null){
current.show();
return;
}
Form hi = new Form("Hi World", BoxLayout.y());
hi.add(new Label("Hi World"));
Button b = new Button("Show Dialog");
hi.add(b);
b.addActionListener((e) -> Dialog.show("Dialog Title", "Hi", "OK", null));
hi.show();
}
public void stop() {
current = getCurrentForm();
if(current instanceof Dialog) {
((Dialog)current).dispose();
current = getCurrentForm();
}
}
public void destroy() {
}
}

I guess this com.codename1.ui.Button might works for u.

try/catch not working in Java?

I am making an app for android in Qt. So in order to use the Google API I need to implement Java. So I have looked through the QtNotifier example and I am trying to implement the same as a starter.
This Java example comes from the QtNotifier example aswell so it should work the same but it doesn't. I have tried to debug it using the Qt debugger but the breakpoints do not seem to trigger So I added println statements to see at which line it goes wrong. But this is not enough so I am trying to print a stacktrace using a catch/try clause.
I have implemented it like this:
package org.qtproject.qt5.example;
import android.app.Notification;
import android.app.NotificationManager;
import android.content.Context;
import java.lang.Object;
import java.io.Writer;
import java.io.StringWriter;
import java.io.PrintWriter;
public class NotificationClient extends org.qtproject.qt5.android.bindings.QtActivity
{
private static NotificationManager m_notificationManager;
private static Notification.Builder m_builder;
private static NotificationClient m_instance;
public NotificationClient()
{
System.out.println("it works2222");
m_instance = this;
}
public static void notify(String s)
{
System.out.println(s);
try {
if (m_notificationManager == null) {
System.out.println("1111");
m_notificationManager = (NotificationManager)m_instance.getSystemService(Context.NOTIFICATION_SERVICE);
System.out.println("2222");
m_builder = new Notification.Builder(m_instance);
System.out.println("3333");
m_builder.setContentTitle("A message from Qt!");
System.out.println("4444");
}
System.out.println("5555");
m_builder.setContentText(s);
System.out.println("6666");
m_notificationManager.notify(1, m_builder.build());
System.out.println("7777");
} catch(Exception e) {
StringWriter writer = new StringWriter();
PrintWriter pw = new PrintWriter(writer);
e.printStackTrace(pw);
String errorDetail = writer.toString();
}
}
}
The output is:
I/System.out( 4768): test string
I/System.out( 4768): 1111
It would seem that m_instance is still null because "System.out.println("it works2222");" does not get called. But the error does not get caught.
Is it because this is an error that is not an exception?
I have also tried running the QtNotifier app but the printstatement inside.
public NotificationClient()
{
System.out.println("it works2222");
m_instance = this;
}
But that is also not called in the QtNotifier app.
My question is: How can I trace this error?

In Java, there are both Errors and Exceptions. Normally, an Error is significant enough that your program should just crash and exit. However, for debugging purposes, if you want to catch both you should
catch (Throwable t)
{
t.printStackTrace();
}
to get information on both.

PhoneGap Android copy to clipboard plugin implementation

I'm trying to use this plugin in my application. I've never written a plugin and this is my first time trying to use one in my Phonegap program. I had to try and change a whole bunch of stuff in the java file to get rid of the errors. When I click a button on my screen, I get an error "Uncaught ReferenceError: cordova is not defined at file:///android_asset/www/js/clipboardmanager.js:2". No idea what that means or how to change that. I'll try and paste everything so hopefully it's easier to find my error.
structure:
src
-->com.example.basket
-->MainActivity.java
-->com.saaticiouglu.phonegap.ClipboardManagerPlugin
-->ClipboardManagerPlugin.java
ClipboardManagerPlugin.java:
package com.saatcioglu.phonegap.ClipboardManagerPlugin;
import org.json.JSONArray;
import org.json.JSONException;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.ClipboardManager;
import org.apache.cordova.api.CordovaPlugin;
import org.apache.cordova.api.CallbackContext;
import org.apache.cordova.api.PluginResult;
#SuppressWarnings("deprecation")
public class ClipboardManagerPlugin extends CordovaPlugin {
private static final String actionCopy = "copy";
private static final String actionPaste = "paste";
private static final String errorParse = "Couldn't get the text to copy";
private static final String errorUnknown = "Unknown Error";
private ClipboardManager mClipboardManager;
#SuppressLint("NewApi") #Override
public boolean execute(String action, JSONArray args, CallbackContext callbackContext)
{
// If we do not have the clipboard
if(mClipboardManager == null) {
mClipboardManager = (ClipboardManager) cordova.getActivity().getSystemService(Context.CLIPBOARD_SERVICE);
}
// Copy
if (action.equals(actionCopy)) {
String arg = "";
try {
arg = (String) args.get(0);
mClipboardManager.setText(arg);
} catch (JSONException e) {
callbackContext.error( errorParse);
} catch (Exception e) {
callbackContext.error( errorUnknown);
}
callbackContext.success();
// Paste
} else if (action.equals(actionPaste)) {
String arg = (String) mClipboardManager.getText();
if (arg == null) {
arg = "";
}
PluginResult copy_ret = new PluginResult(PluginResult.Status.OK, arg);
callbackContext.sendPluginResult(copy_ret);
callbackContext.success();
} else {
callbackContext.error("invalid action");
return false;
}
return true;
}
}
I had to use the Surpress warnings because setText and getText were giving me errors...and they are still crossed out in my file. But no errors there now...
clipboardmanager.js:
window.clipboardManagerCopy = function(str, success, fail) {
cordova.exec(success, fail, "ClipboardManagerPlugin", "copy", [str]);
};
window.clipboardManagerPaste = function(success, fail) {
cordova.exec(success, fail, "ClipboardManagerPlugin", "copy", []);
};
I referenced to the JS file in my index.html:
$('button').on('click', function(){
window.clipboardManagerCopy(
"the text to copy",
function(r){alert("copy is successful")},
function(e){alert(e)}
);
});
I just want to get a simple alert to see that it works. Thanks for taking the time to help out. Please help me fix this!!!