public class Individual extends AppCompatActivity {

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

    //referência ao arquivo que armazena os valores
    final SharedPreferences settings = getApplicationContext().getSharedPreferences("tarefafile", 0);
    final SharedPreferences.Editor editor = settings.edit();

    //pega valores enviados pela página Novo Texto, salva em uma string e limpa o arquivo
    final String tarefaTit = settings.getString("tarefatit", null);
    editor.remove("tarefatit");

    //recebe valores préviamente salvos, caso existam
    String tarefa1tit = settings.getString("tarefa1tit", null);
    String tarefa2tit = settings.getString("tarefa2tit", null);
    String tarefa3tit = settings.getString("tarefa3tit", null);
    String tarefa4tit = settings.getString("tarefa4tit", null);
    String tarefa5tit = settings.getString("tarefa5tit", null);
    String tarefa6tit = settings.getString("tarefa6tit", null);
    String tarefa7tit = settings.getString("tarefa7tit", null);
    String tarefa8tit = settings.getString("tarefa8tit", null);
    String tarefa9tit = settings.getString("tarefa9tit", null);
    String tarefa10tit = settings.getString("tarefa10tit", null);
    String tarefa11tit = settings.getString("tarefa11tit", null);
    String tarefa12tit = settings.getString("tarefa12tit", null);
    String tarefa13tit = settings.getString("tarefa13tit", null);

    //declara textviews
    TextView tarefa1view = findViewById(R.id.textView9);
    TextView tarefa2view = findViewById(R.id.textView10);
    TextView tarefa3view = findViewById(R.id.textView11);
    TextView tarefa4view = findViewById(R.id.textView12);
    TextView tarefa5view = findViewById(R.id.textView17);
    TextView tarefa6view = findViewById(R.id.textView18);
    TextView tarefa7view = findViewById(R.id.textView19);
    TextView tarefa8view = findViewById(R.id.textView20);
    TextView tarefa9view = findViewById(R.id.textView21);
    TextView tarefa10view = findViewById(R.id.textView22);
    TextView tarefa11view = findViewById(R.id.textView23);
    TextView tarefa12view = findViewById(R.id.textView24);
    TextView tarefa13view = findViewById(R.id.textView25);

    //confere se há valores enviados pela página Novo Texto, se houver, confere se há tarefa em branco para colocar o valor
    if(tarefaTit!=null){
        if(tarefa1tit==null){
            tarefa1view.append("*");
            tarefa1view.append(tarefaTit);
            editor.putString("tarefa1tit", tarefaTit);}
        else if(tarefa2tit==null){
            tarefa2view.append("*");
            tarefa2view.append(tarefaTit);
            editor.putString("tarefa2tit", tarefaTit);}
        else if(tarefa3tit==null){
            tarefa3view.append("*");
            tarefa3view.append(tarefaTit);
            editor.putString("tarefa3tit", tarefaTit);}
        else if(tarefa4tit==null){
            tarefa4view.append("*");
            tarefa4view.append(tarefaTit);
            editor.putString("tarefa4tit", tarefaTit);}
        else if(tarefa5tit==null){
            tarefa5view.append("*");
            tarefa5view.append(tarefaTit);
            editor.putString("tarefa5tit", tarefaTit);}
        else if(tarefa6tit==null){
            tarefa6view.append("*");
            tarefa6view.append(tarefaTit);
            editor.putString("tarefa6tit", tarefaTit);}
        else if(tarefa7tit==null){
            tarefa7view.append("*");
            tarefa7view.append(tarefaTit);
            editor.putString("tarefa7tit", tarefaTit);}
        else if(tarefa8tit==null){
            tarefa8view.append("*");
            tarefa8view.append(tarefaTit);
            editor.putString("tarefa8tit", tarefaTit);}
        else if(tarefa9tit==null){
            tarefa9view.append("*");
            tarefa9view.append(tarefaTit);
            editor.putString("tarefa9tit", tarefaTit);}
        else if(tarefa10tit==null){
            tarefa10view.append("*");
            tarefa10view.append(tarefaTit);
            editor.putString("tarefa10tit", tarefaTit);}
        else if(tarefa11tit==null){
            tarefa11view.append("*");
            tarefa11view.append(tarefaTit);
            editor.putString("tarefa11tit", tarefaTit);}
        else if(tarefa12tit==null){
            tarefa12view.append("*");
            tarefa12view.append(tarefaTit);
            editor.putString("tarefa12tit", tarefaTit);}
        else if(tarefa13tit==null){
            tarefa13view.append("*");
            tarefa13view.append(tarefaTit);
            editor.putString("tarefa13tit", tarefaTit);}
    }

    //coloca as strings na tela em ordem
    if(tarefa13tit!=null){
        if(tarefa12tit==null){
            tarefa12tit = tarefa13tit;}
        else{
            tarefa13view.clearComposingText();
            tarefa13view.append("*");
            tarefa13view.append(tarefa13tit);}}
    if(tarefa13tit==null){
        tarefa13view.clearComposingText();}

    if(tarefa12tit!=null){
        if(tarefa11tit==null){
            tarefa11tit = tarefa13tit;}
        else{
            tarefa12view.clearComposingText();
            tarefa12view.append("*");
            tarefa12view.append(tarefa12tit);}}
    if(tarefa12tit==null){
        tarefa12view.clearComposingText();}

    if(tarefa11tit!=null){
        if(tarefa10tit==null){
            tarefa10tit=tarefa11tit;}
        else{
            tarefa11view.clearComposingText();
            tarefa11view.append("*");
            tarefa11view.append(tarefa11tit);}}
    if(tarefa11tit==null){
        tarefa11view.clearComposingText();}

    if(tarefa10tit!=null){
        if(tarefa9tit==null){
            tarefa9tit=tarefa10tit;}
        else{
            tarefa10view.clearComposingText();
            tarefa10view.append("*");
            tarefa10view.append(tarefa10tit);}}
    if(tarefa10tit==null){
        tarefa10view.clearComposingText();}

    if(tarefa9tit!=null){
        if(tarefa8tit==null){
            tarefa8tit=tarefa9tit;}
        else{
            tarefa9view.clearComposingText();
            tarefa9view.append("*");
            tarefa9view.append(tarefa9tit);}}
    if(tarefa9tit==null){
        tarefa9view.clearComposingText();}

    if(tarefa8tit!=null){
        if(tarefa7tit==null){
            tarefa7tit=tarefa8tit;}
        else{
            tarefa8view.clearComposingText();
            tarefa8view.append("*");
            tarefa8view.append(tarefa8tit);}}
    if(tarefa8tit==null){
        tarefa8view.clearComposingText();}

    if(tarefa7tit!=null){
        if(tarefa6tit==null){
            tarefa6tit=tarefa7tit;}
        else{
            tarefa7view.clearComposingText();
            tarefa7view.append("*");
            tarefa7view.append(tarefa7tit);}}
    if(tarefa7tit==null){
        tarefa7view.clearComposingText();}

    if(tarefa6tit!=null){
        if(tarefa5tit==null){
            tarefa5tit=tarefa6tit;}
        else{
            tarefa6view.clearComposingText();
            tarefa6view.append("*");
            tarefa6view.append(tarefa6tit);}}
    if(tarefa6tit==null){
        tarefa6view.clearComposingText();}

    if(tarefa5tit!=null){
        if(tarefa4tit==null){
            tarefa4tit=tarefa5tit;}
        else{
            tarefa5view.clearComposingText();
            tarefa5view.append("*");
            tarefa5view.append(tarefa5tit);}}
    if(tarefa5tit==null){
        tarefa5view.clearComposingText();}

    if(tarefa4tit!=null){
        if(tarefa3tit==null){
            tarefa3tit=tarefa4tit;}
        else{
            tarefa4view.clearComposingText();
            tarefa4view.append("*");
            tarefa4view.append(tarefa4tit);}}
    if(tarefa4tit==null){
        tarefa4view.clearComposingText();}

    if(tarefa3tit!=null){
        if(tarefa2tit==null){
            tarefa2tit=tarefa3tit;}
        else{
            tarefa3view.clearComposingText();
            tarefa3view.append("*");
            tarefa3view.append(tarefa3tit);}}
    if(tarefa3tit==null){
        tarefa3view.clearComposingText();}

    if(tarefa2tit!=null){
        if(tarefa1tit==null){
            tarefa1tit=tarefa2tit;}
        else{
            tarefa2view.clearComposingText();
            tarefa2view.append("*");
            tarefa2view.append(tarefa2tit);}}
    if(tarefa2tit==null){
        tarefa2view.clearComposingText();}

    if(tarefa1tit!=null){
        tarefa1view.clearComposingText();
        tarefa1view.append("*");
        tarefa1view.append(tarefa1tit);}
    if(tarefa1tit==null){
        tarefa1view.clearComposingText();}

    //click longo para opções
    tarefa1view.setOnLongClickListener(new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View v) {
            //ao segurar o texview:
            //aparecem checkbox em cada texview >em q tiver tarefa<
            //aparece navigation view com opções e delete
            return false;
        }
    });

    final String canDelete = tarefa1tit;
    final String canAdd = tarefa13tit;

    //botão deletar
    Button deleteTask1Btn = findViewById(R.id.deleteTask1Btn);
    deleteTask1Btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            editor.remove("tarefa1tit");
            editor.remove("tarefa2tit");
            editor.remove("tarefa3tit");
            editor.remove("tarefa4tit");
            editor.remove("tarefa5tit");
            editor.remove("tarefa6tit");
            editor.remove("tarefa7tit");
            editor.remove("tarefa8tit");
            editor.remove("tarefa9tit");
            editor.remove("tarefa10tit");
            editor.remove("tarefa11tit");
            editor.remove("tarefa12tit");
            editor.remove("tarefa13tit");
            editor.commit();
            recreate();
            if(canDelete!=null){
                Toast.makeText(Individual.this, "Tarefas removidas", Toast.LENGTH_SHORT).show();}
            else{
                Toast.makeText(Individual.this, "Não há tarefas", Toast.LENGTH_SHORT).show();}
        }
    });

    //toolbar
    Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    //botao adicionar tarefa
    FloatingActionButton newTask = findViewById(R.id.newTaskFab);
    newTask.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if(canAdd!=null){
                Toast.makeText(Individual.this, "Não há mais espaço", Toast.LENGTH_SHORT).show();}
            else{
                Intent intent = new Intent(Individual.this, NovoTexto.class);
                startActivity(intent);
                Toast.makeText(Individual.this, "Nova tarefa", Toast.LENGTH_SHORT).show();}
        }
    });