CODEWITHSUNDEEP
javaandroid
private432
private432

Reputation: 19

Get the state of a Switch in onCreate()

So my question is how I can get the state of a Switch.

I have this Code:

   notificationSwitch.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if(notificationSwitch.isChecked()){
                System.out.println("Checked");
                SharedPreferences.Editor editor = getSharedPreferences("save", MODE_PRIVATE).edit();
                editor.putBoolean("value", true);
                editor.apply();
                notificationSwitch.setChecked(true);
            }else{
                System.out.println("not checked");
                SharedPreferences.Editor editor = getSharedPreferences("save", MODE_PRIVATE).edit();
                editor.putBoolean("value", false);
                editor.apply();
                notificationSwitch.setChecked(false);
            }
        }
    });

The state of the switch is saved in the Shared Preferences and if I start the app the Switch is on the same state as when I left the app. But when I start the app is should print checked or not checked but it doesn't print out anything

Upvotes: 0

Views: 67

Answers (1)

Hasan Bou Taam
Hasan Bou Taam

Reputation: 4035

I will answer based on the title:

To get the state of the switch in onCreate():

//in onCreate:

SharedPreferences prefrences = getSharedPreferences("save", MODE_PRIVATE);
//false mean if not found set to false as default
boolean stateSwitch = prefrences.getBoolean("value",false);



//set state for switch
notificationSwitch.setChecked(stateSwitch);

//log the state
if(stateSwitch == true){
    Log.d("TAG","checked");
}else{
    Log.d("TAG","not checked");
}

UPDATE

  • keep your onclicklistener the same, and add the code I provided before your onclicklistener in onCreate:

1) when you turn switch on and leave activity and come back it must stay on.

2) when you turn switch off and leave activity and come back it must stay off.

3) if you do nothing leave activity and come back it must stay off.

Upvotes: 2

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