How to disable a button in onCreate method with if statment [duplicate]

Question

I have a problem, I want to disable a button in onCreate method, please share the way of disabling any button at runtime in onCreate method.

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


  Intent intent = new Intent(this, AdminPopup.class);
    startActivity(intent);


    String fName = getIntent().getStringExtra("fName");
    TextView tfName = (TextView)findViewById(R.id.fName);
    tfName.setText(fName);
    String vuEmail = getIntent().getStringExtra("VUEmail");
    TextView tEmail = (TextView)findViewById(R.id.vuEmail);
    tEmail.setText(vuEmail);

    EditText vuEmailTest = (EditText)findViewById(R.id.vuEmail);
    String email = vuEmailTest.getText().toString();
    String str = email.substring(0,2);
    if(str.equals("bc")){
        String str2 = email.substring(3,9);
        boolean digitsOnly = TextUtils.isDigitsOnly(str2);
        if (digitsOnly){
            Button accButton = (Button)findViewById(R.id.accButton);

        }
    }
    else{
        Button accButton = (Button)findViewById(R.id.accButton);

    }

}

Set it as disabled in your layout. So, when you'll add it through setContentView() you'll find it already disabled. By doing so, you won't need any extra code. Except that to re-enable it later. — Phantômaxx
– Phantômaxx, Commented Jul 17, 2017 at 17:55

Ben P. · Accepted Answer · 2017-07-17 17:55:14Z

2

Try this:

    Button accButton = (Button) findViewById(R.id.accButton);
    accButton.setEnabled(false);

Note that in your posted code, you are setting the button with findViewbyId(), which should be findViewById() (the By needs to be capitalized).

answered Jul 17, 2017 at 17:55

Ben P.

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3 Comments

bs140200456 Aqsa Anum Over a year ago

Can I use if statement in onCreate method ? Because I have to take some checks and then have to disable the button

Ben P. Over a year ago

Sure. Or you can write something like accButton.setEnabled(check1 && check2);

bs140200456 Aqsa Anum Over a year ago

Its just giving runtime error after putting if statments in it

Lakshmi Priya Vikram · Accepted Answer · 2017-07-17 18:09:55Z

1

Button button =(Button) findViewById(R.id.buttonid); button.setVisibility(View.GONE);

answered Jul 17, 2017 at 18:09

Lakshmi Priya Vikram

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Comments

SiSa · Accepted Answer · 2017-07-17 18:31:57Z

1

Use android:enabled="false" in xml or accButton.setEnabled(false) in code
Also, it's better to check is numeric by this method:

public static boolean isNumeric(String str) {
    try {
        double d = Double.parseDouble(str);
    } catch (NumberFormatException nfe) {
        return false;
    }
    return true;
}

edited Jul 17, 2017 at 18:31

answered Jul 17, 2017 at 17:58

SiSa

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13 Comments

bs140200456 Aqsa Anum Over a year ago

Can I use if statement in onCreate method ? Because I have to take some checks and then have to disable the button

SiSa Over a year ago

@bs140200456AqsaAnum Yes, why not

bs140200456 Aqsa Anum Over a year ago

I just putted if statment and now it is giving runtime error

SiSa Over a year ago

@bs140200456AqsaAnum Include your if statement

bs140200456 Aqsa Anum Over a year ago

Can I edit above coding and How, I will put my current code there

|

Elysian Apps · Accepted Answer · 2017-07-17 18:53:11Z

1

Do this:

Button b = (Button) findViewById(R.id.mybutton);
b.setEnabled(false);

answered Jul 17, 2017 at 18:53

Elysian Apps

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