Trying to add multiple checkbox into an array on Android Studio

Question

Im doing an App on Android Studio and im trying to add all my checkbox IDs into an array, so i can use it , without doing it manually. I tried to do it on another way, but i didn´t find nothing on google that help me,

So here is my goal:

I want to get all my Checkbox ids, so i can get their text. And i don´t want to do it manually because i got alot of checkboxs.

I tried to write a code by myself but i´m getting an message error. Here is my code:

 CheckBox[] MinhaCheckBox;
    SharedPreferences Dados;
   String MinhaPasta = "Pasta";
    String valor;

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

    public void btn_Gerar(View v)
    {
        Dados = getSharedPreferences(MinhaPasta,0);
        SharedPreferences.Editor Edita = Dados.edit();
        int IDTexBoz[] = {R.id.checkBox,R.id.checkBox2,R.id.checkBox3,R.id.checkBox4,R.id.checkBox5,
                R.id.checkBox6,R.id.checkBox7,R.id.checkBox8};
        for(int i = 0 ; i < IDTexBoz.length; i++)
        {


 *//I GOT AN ERRO HERE. please help me.*
 * // when i try to put mycheckbox on my array, i got th error!*
            MinhaCheckBox[i] = (CheckBox)findViewById(IDTexBoz[i]);

        }
        for (int a= 0; a < MinhaCheckBox.length;a++)
        {
            if(MinhaCheckBox[a].isChecked())
            valor += MinhaCheckBox[a].getText().toString() + ";";
        }
        Edita.putString("Dado", valor);
        Edita.commit();

        Intent MeuIntent = new Intent(this,Main2Activity.class);
        startActivity(MeuIntent);
    }
}

It will be easier to find solution, if you provide the exact error message. — Dhaval Patel
– Dhaval Patel, Commented Oct 26, 2015 at 18:39

Daniel S. · Accepted Answer · 2015-10-26 18:38:30Z

1

You need to initialize your checkbox array.

answered Oct 26, 2015 at 18:38

Daniel S.

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1 Comment

Daniel S. Over a year ago

It would be something like... CheckBox[] MinhaCheckBox = new CheckBox[IDTexBoz.length]; Put the line before the for statement.

Ismael Di Vita · Accepted Answer · 2015-10-26 18:40:14Z

1

Maybe this example could help, you don't need to store the ID name, do something like this..

for(int i=1;i<=12 ;i++){ 
        int resID = getResources().getIdentifier("checkBox"+i, "id",getPackageName()); 
        CheckBox cb = (CheckBox) findViewById(resID);
        //Handle cb object here  
}

answered Oct 26, 2015 at 18:40

Ismael Di Vita

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Comments

Dhaval Patel · Accepted Answer · 2015-10-26 18:47:23Z

0

It's Very Simple.

int IDTexBoz[] = {R.id.checkBox,R.id.checkBox2,R.id.checkBox3,R.id.checkBox4,R.id.checkBox5,
                R.id.checkBox6,R.id.checkBox7,R.id.checkBox8};
//Here is code for array initialization. 
MinhaCheckBox = new CheckBox[IDTexBoz.length];

answered Oct 26, 2015 at 18:47

Dhaval Patel

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