How to create buttons with a loop Android Studio

Question

I'm kinda new to programming, I was tring as exercise to create new buttons with a loop, but I cannot figure it out. I've tried:

int i;
    for(i=0; i<10; i++){
        ImageButton btn[i]= (ImageButton) findViewById(R.id.btn);
    }

II pretty sure this is a stupid question, but I could not find the answer.

Summing up my goal would be to do something like this:

loop{
    create_new_button();
}

findViewById looks up an item in an existing layout. You should search how to add an item to a layout. — RvdK, Apr 03 '17 at 17:25
Possible duplicate of [Dynamically Creating/Removing Buttons in Android](http://stackoverflow.com/questions/29741097/dynamically-creating-removing-buttons-in-android) — RvdK, Apr 03 '17 at 17:31

krsnk · Accepted Answer · 2017-04-03T17:37:39.157

2

ImageButton btn[] = new ImageButton[10];

int i;
for(i=0; i<10; i++){
    btn[i] = new ImageButton(this);
}

edited Apr 03 '17 at 17:37

answered Apr 03 '17 at 17:26

krsnk

267
1
10

I tried, but this is printing out an error Error:(34, 33) error: ']' expected Error:(34, 34) error: illegal start of expression Error:Execution failed for task ':app:compileDebugJavaWithJavac'. > Compilation failed; see the compiler error output for details. – kefete Apr 03 '17 at 17:33

score 0 · Answer 2 · answered Apr 03 '17 at 17:39

Try this:

First put a linear layout or whatever you want to your xml.

LinearLayout layout = (LinearLayout) findViewById(R.id.linearLayout);

Then, create an arraylist of ImageButton. In a for loop, initialize your bottons and add to your linear layout.

ArrayList<ImageButton> buttons = new ArrayList<>;

for(int i = 0; i < 10; i++){
    ImageButton button = new ImageButton(context)
    buttons.add(button);
    //optional: add your buttons to any layout if you want to see them in your screen
    layout.addView(button);
}

oguzhand Thank you very much! This is working, fantastic! – kefete Apr 03 '17 at 17:48 — kefete, Apr 03 '17 at 17:48

How to create buttons with a loop Android Studio

2 Answers2