How to Store a Boolean Value Using Sharedpreferences in Android

How to store a boolean value using SharedPreferences in Android?

SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this); // getActivity() for Fragment
Boolean statusLocked = prefs.edit().putBoolean("locked", true).commit();

if you dont care about the return value (status) then you should use .apply() which is faster because its asynchronous.

prefs.edit().putBoolean("locked", true).apply();

to get them back use

Boolean yourLocked = prefs.getBoolean("locked", false);

while false is the default value when it fails or is not set

In your code it would look like this:

boolean locked = true;
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(); 
if (locked) { 
//maybe you want to check it by getting the sharedpreferences. Use this instead if (locked)
// if (prefs.getBoolean("locked", locked) {
   prefs.edit().putBoolean("locked", true).commit();
} else {
   startActivity(new Intent(parent.getContext(), Tag1.class));
}

How to save the Boolean value in sharedPreference also save the imageView

This is how you store a boolean in shared preference:

SharedPreferences prefs= getSharedPreferences("sharedPrefName", Context.MODE_PRIVATE);
SharedPreferences.Editor editor= prefs.edit();
editor.putBoolean("lockedState", yourBooleanVariable);
editor.apply();

This is how to access it again somewhere:

SharedPreferences prefs = getSharedPreferences("sharedPrefName", Context.MODE_PRIVATE); 
boolean bool= prefs.getBoolean("lockedState", null);

And what do you mean by value of img? Please Explain?

android sharedPreferences to set and retrieve boolean value

This is how you need to work with shared preferences.

The senerio I am about to show is to check if this particular activity is running for the first time or not.

Here is what you do in your on create method:

//SharePrefernces
SharedPreferences appIntro = null;

@Override
protected void onCreate(Bundle savedInstanceState) {

    //Check if the Application is Running for the First time
    appIntro = getSharedPreferences("hasRunBefore_appIntro", 0);  //load the preferences
    Boolean hasRun = appIntro.getBoolean("hasRun_appIntro", false); //see if it's run before, default no
    //If FirstTime
    if (!hasRun) {
        //code for if this is the first time the application is Running
        //Display Activity
        super.onCreate(savedInstanceState);
        setContentView(R.layout.app_intro_activity);

        //Button to send Confirmation back 
        Button btn_ok = (Button) findViewById(R.id.appintro_btn_ok);
        btn_ok.setOnClickListener(new View.OnClickListener() {

            public void onClick(View arg0) {

                //Save information that this application has run for the first time
                SharedPreferences settings = getSharedPreferences("hasRunBefore_appIntro", 0);
                SharedPreferences.Editor edit = settings.edit();
                edit.putBoolean("hasRun_appIntro", true);
                edit.commit(); //apply

                Intent intent = new Intent(Application_Intro_Activity.this, MainActivity.class);
                startActivity(intent);
                //close Activity
                finish();
            }
        });

    }//End of if(firstTime)
    else {
        //code if the Application has run before
        super.onCreate(savedInstanceState);
        //Navigate Directly to MainActivity
        Intent intent = new Intent(Application_Intro_Activity.this, MainActivity.class);
        startActivity(intent);
        //close Activity
        finish();
    }

}//End of OnCreate()

Pass and retrieve boolean value from multiple activities using sharedPreference

You are not set them false in any condition that's why all if blocks are executed. initialize these value to false by default then set true depend on your condition.

highRiskOfHeartDisease = true;
lowRiskOfHeartDisease = true;
unlikelyNoHeartDisease = true;
other = true

---

Related Topics