How to set invisible layout to visible permanently?-CodePudding

In my application, On the MainActivity.java I need to display two layouts, One is visible in the initial stage and the other is invisible. When a button is pressed the invisible one get visible and visible one get invisible, here is the code i have writen:

public class MainActivity extends AppCompatActivity {

DrawerLayout drawerLayout;
SupportMapFragment supportMapFragment;
SupportMapFragment supportMapFragment1;
FusedLocationProviderClient client;
View checkoutLayout, checkinLayout;
ImageButton checking_button, checkout_button;
Chronometer chronometer;
Handler handler;
long tMillisec, tStart, tBuff, tUpdate = 0L;
int sec, min, millisec, hr;
TextView tv_location, editText_remark, location_checkout, location_remark, dateView, timeView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);

    String date = new SimpleDateFormat("dd-MM-yyyy", Locale.getDefault()).format(new Date());
    String currentTime = new SimpleDateFormat("HH:mm", Locale.getDefault()).format(new Date());


    checking_button = findViewById(R.id.checkin_btn);
    chronometer = findViewById(R.id.chrono);
    checkoutLayout = findViewById(R.id.checkOut);
    checkinLayout = findViewById(R.id.checkinLayout);
    checkout_button = findViewById(R.id.checkout_btn);
    tv_location = findViewById(R.id.tv_location);
    editText_remark = findViewById(R.id.editText_remark);
    location_checkout = findViewById(R.id.location_checkout);
    location_remark = findViewById(R.id.Remark_checkout);
    dateView = findViewById(R.id.date_pick);
    timeView = findViewById(R.id.time_pick);


    checkinLayout.setVisibility(View.VISIBLE);
    checkoutLayout.setVisibility(View.INVISIBLE);

    handler = new Handler();

    drawerLayout = findViewById(R.id.drawer_layout);
    supportMapFragment = (SupportMapFragment) getSupportFragmentManager()
            .findFragmentById(R.id.map_view);
    supportMapFragment1 = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map_view1);
    client = LocationServices.getFusedLocationProviderClient(this);

    // check permission

    if(ActivityCompat.checkSelfPermission(MainActivity.this,
            Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED){
        // when permission granted call method
        getCurrentLocation();
    }else{
        ActivityCompat.requestPermissions(MainActivity.this,
                new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 44);
    }

    checking_button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if(tv_location.getText().toString().isEmpty() || editText_remark.getText().toString().isEmpty()){
                Toast.makeText(getApplicationContext(), "Please Enter your Location and Remark", Toast.LENGTH_SHORT).show();
            }else {
                checkoutLayout.setVisibility(v.VISIBLE);
                checkinLayout.setVisibility(v.GONE);
                tStart = SystemClock.uptimeMillis();
                handler.postDelayed(runnable, 0);
                chronometer.start();
                location_checkout.setText(tv_location.getText().toString());
                location_remark.setText(editText_remark.getText().toString());
                dateView.setText("Date:"  date);
                timeView.setText("Punch-In:"  currentTime);
            }
        }
    });

    checkout_button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            checkinLayout.setVisibility(v.VISIBLE);
            checkoutLayout.setVisibility(v.GONE);
        }
    });


}

The code works good but the problem is when i make checkoutLayot visible and checkinLayout invisible, when i close the app and reopen it the layout changes to checkoutLayout invisible and checkinLayout visible, So i need to make the last visited page visible. I am new to android development, can any one help me to solve the problem.

CodePudding user response：

You have to use SharePreference for this, to save the state that your app was in when the user closed the app. Save the state in the sharedpreference as soon as user presses a button and then in onStart method of the app, you can get the value of the state from the SharePreference and then show your layouts accordingly.

CodePudding user response：

First thing first you should put all your variables including views(like Textview, Handler etc. private). Secondly our friend @rootass here is right you should use SharePrference so you can save changes. Here is an example of writing and getting SharedPreferences. Code for Wrting SharedPreferences ...

private SharedPreferences visibilityPreference;
private SharedPreferences.Editor prefEdit;
private final String visibilityKey = "visibility";


private void setVisibility(boolean flag){
  prefEdit = visibilityPreference.edit();
  visibilityPreference = context.getSharedPreferences(visibilityPreferenceName, Context.MODE_PRIVATE);
  visibilityPreference.putBoolean(visibilityKey, flag);
  prefEdit.apply();
}

And here code for reading SharedPreferences...

private boolean getVisibility(){
  visibilityPreference = context.getSharedPreferences(visibilityPreferenceName, Context.MODE_PRIVATE);
  return visibilityPreference .getBoolean(visibilityKey, false); //we set false as default value
}

ps : since you are new to android i probably should mention that instead of context in mentioned code above if you are in independtend activity you do not need to use context just put this or nothing and of you are not in an independent activity, in case of fragment use context or requireActivity() and in case of being in recyclerview use passed context.

Hope it helps you ;)