Reload Activity in Android

Reload activity in Android

You can Simply use

finish();
startActivity(getIntent());

to refresh an Activity from within itself.

Reload activity from same activity

This is the best way to refresh your activity:

public void refresh() {
    Intent intent = getIntent();
    overridePendingTransition(0, 0);
    intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
    finish();
    overridePendingTransition(0, 0);
    startActivity(intent);
}

EDIT 06.11.2021
Kotlin way to refresh activity

private fun refresh() {
        val intent = Intent(applicationContext, YourActivity::class.java)
        startActivity(intent)
        finish()
    }

How to reload same activity with giving data with intent?

Try the following steps...

1. Refresh RestaurantDetailActivity

    Intent intent = new Intent(RestaurantDetailActivity.this, RestaurantDetailActivity.class);
    Bundle bundle = new Bundle();
    bundle.putInt("restaurant_id", mDataset.get(position).getRestaurantId());
    intent.putExtras(bundle);
    startActivity(intent);
    RestaurantDetailActivity.this.finish();
   

2. In OnCreate() you should do like this in the same activity

    if(getIntent().getExtras() != null) {
        Bundle extras = getIntent().getExtras();
        int restaurantId = extras.getInt("restaurant_id");
        // todo with restaurantId
    }
   

reload activity without close app in android

hi you can do startActivity after finish;

@Override
public boolean onOptionsItemSelected(MenuItem item) {

switch (item.getItemId()) {

    case R.id.item_delete:

        // refrash page
        if(db.getAllDataBuyit().size()>0) {
            db.RemoveBuy_AllItem();
            /////////////////////////
             finish();
             startActivity(getIntent());
           /////////////////////////
        }
        return true;
    default:
}
return super.onOptionsItemSelected(item);

}

Android Studio refresh the activity and display the current fragment

Instead of start new with same Activity you should call recreate and inside onCreate method you have to check savedInstanceState == null before init default fragment

@Override
public boolean onOptionsItemSelected(@NonNull MenuItem item) {
    Configuration configuration = new Configuration();
    Intent intent = new Intent();
    switch (item.getItemId()){
        case R.id.action_polski:
            Locale localePl = new Locale("pl");
            Locale.setDefault(localePl);
            configuration.locale = localePl;
            getBaseContext().getResources().updateConfiguration(configuration,getBaseContext().getResources().getDisplayMetrics());

            recreate()
            break;
        case R.id.action_english:
            Locale localeEn = new Locale("en");
            Locale.setDefault(localeEn);
            configuration.locale = localeEn;
            getBaseContext().getResources().updateConfiguration(configuration,getBaseContext().getResources().getDisplayMetrics());

            recreate()
            break;
    }
    return true;
}   

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        if (savedInstanceState == null) {
            // init default fragment
        }
    }

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