How to change button label on runtime?

Question

I'm using a button to create new button's on runtime but the new buttons created have predefined label i.e. btn1.setText("New");. Is there any way so that once buttons created on runtime there label can be modified or change to some other label like instead of New it can be "Click", "mouse", "clothing" but while application is running. code to create button:

if(v == add){
        Button btn1 = new Button(this);
        btn1.setText("New");
        btn1.setId(34);     
        btn1.setOnClickListener(this);
        btn1.setOnClickListener(new OnClickListener () {
            @Override
            public void onClick(View v){
                mDialog();
            }
        });
        LinearLayout ll = (LinearLayout)findViewById(R.id.layout1);
        LayoutParams lp = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);       
        ll.addView(btn1, lp);
        count++;
        Editor editor = prefs.edit();
        editor.putInt("count", count);
        editor.commit();
    }

And I'm using shared preferences to store previous created buttons

prefs = PreferenceManager.getDefaultSharedPreferences(this);
    count=prefs.getInt("count", 0);
    LinearLayout ll = (LinearLayout)findViewById(R.id.layout1);
    for(i=0;i<count;i++){
        LayoutParams lp = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);       
        final Button myButton = new Button(this);
        myButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v){
                mDialog(myButton.getText().toString());
            }
        });
        myButton.setId(34);
        myButton.setText("New");
        myButton.setOnLongClickListener(new OnLongClickListener() {
            public boolean onLongClick(View arg0) {
                AlertDialog mdialog = new AlertDialog.Builder(context).create();
                mdialog.setTitle("Change Button Label");
                mdialog.setIcon(android.R.drawable.ic_dialog_info); 
                mdialog.setMessage("Enter new Button label  to change");
                final EditText input = new EditText(MainActivity.this);

                mdialog.setView(input);
                mdialog.setButton(DialogInterface.BUTTON_POSITIVE, "Change",
                        new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) 
                    {
                        myButton.setText(input.getText());
                    }
                });

                mdialog.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", 
                        new DialogInterface.OnClickListener() {

                                @Override
                                public void onClick(DialogInterface dialog, int which) {
                                    Toast.makeText(getApplicationContext(), "Button Label not Changed",Toast.LENGTH_SHORT).show();
                                    dialog.dismiss();

                                }
                            });
                mdialog.show(); 

                return true;    // <- set to true
            }
        });
        ll.addView(myButton, lp);
    }

yes you can, see my answer on http://stackoverflow.com/questions/21497816/android-eclipse-findviewbyid-with-programmatically-checkbox/21497854#21497854, declare your button and use `setText` method for that. — Shayan Pourvatan, Feb 03 '14 at 11:03
can you take the label input from the user? or from where will this dynamic label text come — Pararth, Feb 03 '14 at 11:03
Store all the labels in ArrayList and get them according to your requirement. or increment conditions — RajaReddy PolamReddy, Feb 03 '14 at 11:05
@user2450263 from the user means user will be able to change button label as per his requirement. — Android beginner, Feb 03 '14 at 11:06
@user3172071 : yes....you can call the setText() for that button after taking user's input, i don't think there is anything else to that — Pararth, Feb 03 '14 at 11:18
what is your mean about "I want the user will be able to name the button while running application"? where user put name ? — Shayan Pourvatan, Feb 03 '14 at 11:20
@Shayan pourvatan what I want is that the user can rename button — Android beginner, Feb 03 '14 at 11:25
@Shayan pourvatan the above code creates button on runtime with the label "New" .the thing I want is that user will be able to replace "New" with any name (for e.g. click this, ok, cancel, products etc.) — Android beginner, Feb 03 '14 at 11:33
ok, but where ? like you declare one option in menu that when user clicked on that show one EditText to user and you change the text, or want if clicked on Button user can change text or what ? — Shayan Pourvatan, Feb 03 '14 at 11:35
@Shayan pourvatan yes that thing I want to ask as I don't know how to do it. — Android beginner, Feb 03 '14 at 12:08
@Shayan pourvatan can you please provide necessary code if possible. — Android beginner, Feb 03 '14 at 12:46
you just need setOnLongClickListener for your button, then in that pop up one dialog that have rename title and one EditText for new text and 2 button for cancel and approve and in approve listener set new text on button — Shayan Pourvatan, Feb 03 '14 at 12:52
@Shayan pourvatan please check my edits. I'm using dialogbox in which I'm providing EditText, but still after rename button when I reopen application the button label is still set to "New". — Android beginner, Feb 04 '14 at 10:00
if you want save your value after exiting on your app, you need save the value, so use `sharedPreference `to do that — Shayan Pourvatan, Feb 04 '14 at 10:05
@Shayan pourvatan I'm still using shared preferences to save previously created buttons. and in activity declaring shared preference= null. so can you tell me how I can save the value of new button label — Android beginner, Feb 04 '14 at 10:10
please see http://stackoverflow.com/questions/3624280/how-to-use-sharedpreferences-in-android-to-store-fetch-and-edit-values — Shayan Pourvatan, Feb 04 '14 at 10:14

Mert · Accepted Answer · 2014-02-04T11:03:31.000

2

You only need to:

mButton.setText("WhatEver");

you not need to add the Button again to the layout

To save the Text if you want to show it all the time also if the app is closed you must use Shared Preferences like:

SharedPreference preference = PreferenceManager.getDefaultSharedPreferece(this);

Now if the user change the text do this

Editor edit = preference.edit();
edit.putString("key",mButton.getText().toString());
edit.commit();

Now you had saved the string in the preferences with the key "key"

Now remove the line where you set the Button text to "New" with:

mButton.setText(preference.getString("key","New");

Thats it :)

edited Feb 04 '14 at 11:03

answered Feb 03 '14 at 11:08

Mert

1,333
1
12
15

but this need to define in code. But I want the user will be able to name the button while running application – Android beginner Feb 03 '14 at 11:11
Then add somewhere an Edittext which sets the text of the Button like: mButton.setText(mEdittext.getText()); – Mert Feb 03 '14 at 13:55
please check my edits. I'm using dialogbox in which I'm providing EditText, but still after rename button when I reopen application the button label is still set to "New". – Android beginner Feb 04 '14 at 09:59
Yes, because you set the value of the Button to "New" every time you start, if you want to save all the time whats the value of the Button is you can use [SharedPreferences](http://developer.android.com/reference/android/content/SharedPreferences.html) – Mert Feb 04 '14 at 10:13
can you please tell me how it can be done if possible – Android beginner Feb 04 '14 at 10:15
See my Answer to this Question which is create now – Mert Feb 04 '14 at 10:33
i'm not able to get actually where your answer is. – Android beginner Feb 04 '14 at 10:39
showing error "getText cannot be resolved or is not a field" so I used getText() and cast "myButton.getText()" to string then it is showing error – Android beginner Feb 04 '14 at 10:54
mButton.getText().toString() – Mert Feb 04 '14 at 11:03
after restarting application all buttons have same label like- three buttons have label test1, test2, test3 and after restarting app all buttons have label test3 – Android beginner Feb 05 '14 at 11:36
yes i've uninstalled application and also tried clearing data but still same result. – Android beginner Feb 05 '14 at 12:23
Yes, it because of the uninstallation, if you unstall your app or clean the datas the shared preferences will also cleaned – Mert Feb 06 '14 at 07:21

score 0 · Answer 2 · edited Jun 01 '17 at 12:29

0

Dynamic way to set label name to TextView.

String[] buttonName = {"new","click","mouse","clothing"};

mButton.setText(buttonName[1]);  // here you can replace 1 with 0 or 1 or 2 or 3 as per your requirement.

edited Jun 01 '17 at 12:29

auselen

27,577
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answered Feb 03 '14 at 11:13

Sagar Shah

4,272
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How to change button label on runtime?

2 Answers2