How to TextView array

Question

I need to create one textview array, i'd like to show or hide one image depending position. I'll try to explain it: I've one layout similar this:

1 2 3 4 5

And depending random value show or hide an image in textview 1 or 2, etc...

I can use:

if (a == 4) { t4.setBackgroundResource(R.drawable.ficha); t1.setBackgroundDrawable(null); t2.setBackgroundDrawable(null); t3.setBackgroundDrawable(null); t5.setBackgroundDrawable(null); } else if (a==5) ... ..

But i'd like to know, if it's possible to pass the number t(1) using parameters or something similar.

Thanks in advance and sorry about my english.

himanshu · Accepted Answer · 2012-02-13 12:07:28Z

you can create textview array like this...

TextView tv[]; tv = new TextView[5];

and you can use Switch Case to show or hide the image...

Mudassir · Accepted Answer · 2012-02-13 12:58:59Z

Have a look at the following snippet;

 /* * Initializes the textViewArray * You can call this from onCreate. */ private void setViews() { // Declared at class level as private TextView[] textViewArray = null; textViewArray = new TextView[3]; textViewArray[0] = (TextView) findViewById(R.id.infoText0); textViewArray[1] = (TextView) findViewById(R.id.infoText1); textViewArray[2] = (TextView) findViewById(R.id.infoText2); // Button to demonstrate the functionality switchButton = (Button) findViewById(R.id.switchButton); switchButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(imgIndex >= textViewArray.length) { imgIndex=0; } showTextViewImage(imgIndex++); } }); } /* * Sets the background image only for the textView specified by index */ private void showTextViewImage(int index) { setTitle("" + index); // First remove the backgroud images from all textviews for(TextView textView : textViewArray) { textView.setBackgroundDrawable(null); } // If you are using a common image for all textViews, use this textViewArray[index].setBackgroundResource(R.drawable.ficha); // If you are using different image for every textView, then use this. /* switch (index) { case 0: textViewArray[0].setBackgroundResource(R.drawable.ficha0); break; case 1: textViewArray[1].setBackgroundResource(R.drawable.ficha1); break; case 2: textViewArray[2].setBackgroundResource(R.drawable.ficha2); break; ... ... ... } */ }

Hope, you got the idea.

Sergey Benner · Accepted Answer · 2012-02-13 12:18:13Z

Or you can use List<TextView> tvList = new ArrayList<TextView>(); add as many textviews as you like

and this will retrieve a textview and set background from a list depending on your a value :

((TextView)tvList.get(a)).setBackgroundResource(R.drawable.ficha+a.....);

1st 2nd and so on. you can use Arrays too of course for this purpose.

hope it helps abit

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