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How to call information from radiobutton in separate activity in Android Studio

In my app, I have music playing when the app starts. If the user goes to settings they can change the volume or turn the music on and off, however I do not know how to recall the information from the radio buttons to turn the music on or off in other activities. I know if I turn the music off in the main activity under onCreate it will listen to the radio buttons, but I want music playing when the app starts and when you resume the activity it inputs the info from the radio buttons.
This is the code of my main activity
import androidx.annotation.RequiresApi;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent svc = new Intent(this, music.class
);
startService(svc);
}
public void onPlayPressed(View view) {
Intent myIntent = new Intent(getBaseContext(), Game.class);
startActivity(myIntent);
}
public void onSettingsPressed(View view) {
Intent myIntent = new Intent(getBaseContext(), Settings.class);
startActivity(myIntent);
}
public void onHowtoPressed(View view) {
Intent myIntent = new Intent(getBaseContext(), HowtoPlay.class);
startActivity(myIntent);
}
#Override
public void onResume() {
super.onResume();
}
#Override
public void onDestroy() {
super.onDestroy();
Intent svc = new Intent(this, music.class);
stopService(svc);
}
}
and this is the code of my Settings activity
import androidx.appcompat.app.AppCompatActivity;
import android.content.Context;
import android.content.Intent;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.SeekBar;
import android.widget.Toast;
public class Settings extends AppCompatActivity {
private RadioGroup radioGroup;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_settings);
final Intent svc = new Intent(this, music.class
);
RadioButton rdb = (RadioButton) findViewById(R.id.on);
rdb.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
boolean checked = ((RadioButton) v).isChecked();
// Check which radiobutton was pressed
if (checked){
startService(svc);
}
else{
stopService(svc);
}
}
});
RadioButton rdb2 = (RadioButton) findViewById(R.id.off);
rdb2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
boolean checked = ((RadioButton) v).isChecked();
// Check which radiobutton was pressed
if (checked){
stopService(svc);
}
else{
startService(svc);
}
}
});
final AudioManager audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
int maxVolume = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
int curVolume = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
SeekBar volControl = (SeekBar)findViewById(R.id.seekBar);
volControl.setMax(maxVolume);
volControl.setProgress(curVolume);
volControl.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onStopTrackingTouch(SeekBar arg0) {
}
#Override
public void onStartTrackingTouch(SeekBar arg0) {
}
#Override
public void onProgressChanged(SeekBar arg0, int arg1, boolean arg2) {
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, arg1, 0);
}
});
}
public void onMainMenuPressed(View view){
Intent myIntent=new Intent(getBaseContext(),MainActivity.class);
startActivity(myIntent);
}
public void onResumePressed (View view){
Intent myIntent=new Intent(getBaseContext(),Game.class);
myIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
myIntent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
startActivity(myIntent);
finish();
}
} ```

Use SharedPreferences with simple boolean flag.
You should use onCheckedChangeListener on the radio group rather than onClickListener on individual radio button, like so:
radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(...) {
getSharedPreferences("prefs", 0).edit().putBoolean("music", rdb.isChecked()).apply();
}
});
Then inside other activity:
boolean music = getSharedPreferences("prefs", 0).getBoolean("music", true);
Then check value of the flag to determine whether or not to start the music service.

Android Webview doesn't load the Url from button listener

It loads the site but only when it's not in the Action Listener.
Even if I load the url way down in the onCreate method it works.
I already checked if the Webview is invisible, the button listener works also.
The problem began after a few hours of coding other things
WebView wbvCheckURL;
Button btnSearch;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
wbvCheckURL = findViewById(R.id.wbvCheckURL);
btnSearch = findViewById(R.id.btnSearch);
wbvCheckURL.setWebChromeClient(new WebChromeClient() {
#Override
public void onProgressChanged(WebView view, int newProgress) {
...
}
#Override
public void onReceivedTitle(WebView view, String title) {
...
}
});
wbvCheckURL.getSettings().setJavaScriptEnabled(true);
wbvCheckURL.setWebViewClient(new WebViewClient());
// When i do it like this it works:
// wbvCheckURL.loadUrl("http://www.google.de");
btnSearch.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
wbvCheckURL.loadUrl("http://www.google.de");
hideKeyboard(v);
LoadCode();
}
});
}

The Solution is to load it in a Thread
Create instance and start the thread:
LoadURL t = new LoadURL();
t.start();
Thread class:
class LoadURL extends Thread {
public void run() {
Classname.wbvCheckURL.post(new Runnable() {
public void run() {
Classname.wbvCheckURL.loadUrl("http://www.google.de");
}
});
}

you can try mine. Mine is another kind of webview with Drawer Layout. Hope you get the idea on how to insert the webview.
package com.example.appname;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ImageButton;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.ShareActionProvider;
import androidx.appcompat.widget.Toolbar;
import androidx.core.view.MenuItemCompat;
public class Provokinc extends AppCompatActivity {
private WebView webView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_provokinc);
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
webView = findViewById(R.id.webView);
webView.setWebViewClient(new WebViewClient());
webView.loadUrl("https://stackoverflow.com/questions/63438455/android-webview-doesnt-load-the-url-from-button-listener");
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
ImageButton ImageButton = (ImageButton) findViewById(R.id.imageButtonA);
ImageButton ImageButton1 = (ImageButton) findViewById(R.id.imageButtonB);
ImageButton ImageButton2 = (ImageButton) findViewById(R.id.imageButtonC);
ImageButton ImageButton3 = (ImageButton) findViewById(R.id.imageButtonD);
ImageButton ImageButton4 = (ImageButton) findViewById(R.id.imageButtonE);
ImageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent int1 = new Intent(Provokinc.this,Main3Activity.class);
startActivity(int1);
}
});
ImageButton1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent int2 = new Intent(Provokinc.this, Main2Activity.class);
startActivity(int2);
}
});
ImageButton2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent int3 = new Intent(Provokinc.this, Provokinc.class);
startActivity(int3);
}
});
ImageButton3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent int4 = new Intent(Provokinc.this, ActivityItemDetails.class);
startActivity(int4);
}
});
ImageButton4.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent int5 = new Intent(Provokinc.this, MainActivity.class);
startActivity(int5);
}
});
}
#Override
public void onBackPressed(){
if(webView.canGoBack()){
webView.goBack();
} else{
super.onBackPressed();
}
}
}

Android Image Button

Android app, i wrote to test image button doesn't work. I have created a image button and implement an event listener for that button. What's wrong with this source code?
import android.view.View;
import android.view.View.OnClickListener;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ImageButton;
import android.widget.Toast;
public class ImageButtonTestApp extends Activity {
ImageButton imageButton;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void eventListenerOnButton() {
imageButton = (ImageButton) findViewById(R.id.imageButton1);
imageButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
Toast.makeText(ImageButtonTestApp.this, "ImageButton is clicked!", Toast.LENGTH_SHORT).show();
}
});
}
}

u have written setOnClickListener in different method but u didnot call that method any where call that method in oncreate.
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
eventListenerOnButton();
}
try this one,

Try it
imageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
Toast.makeText(ImageButtonTestApp.this, "ImageButton is clicked!", Toast.LENGTH_SHORT).show();
}
});

Buttons doenst work, no errors given

I am working on a new app, and copied a little bit of the code of my other working app. The errorlog and problems-log doens't give me any errors, but when I press the buttons (test/test1/test2) nothing is happening.
MenuScreen.java:
package com.example.random;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
public class MenuScreen extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
findViewById(R.id.test).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Log.d("DEBUG", "test");
Intent intent = new Intent(MenuScreen.this, FotoMaker.class);
startActivityForResult(intent, 0);
}
});
findViewById(R.test1).setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Log.d("DEBUG", "test1");
Intent intent = new Intent(MenuScreen.this, FotoMaker.class);
}
});
findViewById(R.test2).setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Log.d("DEBUG", "test2");
Intent intent = new Intent(MenuScreen.this, FotoMaker.class);
}
});
findViewById(R.id.verlaat_app).setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Log.d("DEBUG", "test3");
MenuScreen.this.finish();
}
});
}
}
MenuScreen.java:
package com.example.random;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public class FotoMaker extends Activity
{
ImageView iv;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.testpic);
iv = (ImageView) findViewById(R.id.imageView);
Button btn = (Button) findViewById(R.id.testpic);
btn.setOnClickListener(new OnClickListener()
{
#Override
public void onClick (View v){
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, 0);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if(requestCode == 0)
{
Bitmap theImage = (Bitmap) data.getExtras().get("data");
iv.setImageBitmap(theImage);
}
}
}

CHECK OUT THIS ANSWER i have made some corresctions....
package com.example.random;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
public class MenuScreen extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
Button btn1 = (Button) findViewById (R.id.test);
Button btn2 = (Button) findViewById (R.id.test1);
Button btn3 = (Button) findViewById (R.id.test2);
Button btn4 = (Button) findViewById (R.id.verlaat_app);
btn1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Log.d("DEBUG", "test");
Intent intent = new Intent(MenuScreen.this, FotoMaker.class);
startActivity (intent);
}
});
btn2.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Log.d("DEBUG", "test1");
Intent intent = new Intent(MenuScreen.this, FotoMaker.class);
startActivity (intent);
}
});
btn3.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Log.d("DEBUG", "test2");
Intent intent = new Intent(MenuScreen.this, FotoMaker.class);
startActivity (intent);
}
});
btn4.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Log.d("DEBUG", "test3");
MenuScreen.this.finish();
}
});
}
}

Button one should aim to page one

I have a page that has two buttons to "two" other pages, the thing is, button 1 and button 2 lead to a second page, thought button 1 should lead to the first page and button 2 should lead to the second page, here is the java file, I don't know how to put it!
ActiveMain.java
package com.d.di;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.widget.Button;
import android.view.View;
import android.view.View.OnClickListener;
public class MainActivity extends Activity {
Button button1;
Button button2;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
addListenerOnButton();
}
public void addListenerOnButton() {
final Context context = this;
button1 = (Button) findViewById(R.id.abus);
button2 = (Button) findViewById(R.id.weoff);
button1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
Intent intent = new Intent(context, PageOne.class);
startActivity(intent);
}
});
button2.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
Intent intent = new Intent(context, PageTwo.class);
// you made a mistake here you called the PageOne again here while you should call the second.
startActivity(intent);
}
});
}
}
PageOne.java
package com.d.di;
import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
public class PageOne extends Activity {
Button button1;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.abus);
}
}
PageTwo
package com.d.di;
import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
public class PageTwo extends Activity {
Button button2;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.weoff);
}
}

button1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
Intent intent = new Intent(context, PageOne.class);
startActivity(intent);
}
});
button2.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
Intent intent = new Intent(context, PageTWO.class); // you made a
mistake here you called the PageOne again here while you should call the second.
startActivity(intent);
}
});