print array in the log cat android

Question

How can I print the arr variable in the log to see the results of the array thanks,

 public void onClick(View v) {
     if(v.getId()==R.id.buttonone)
     {
          genrandom grandom =new genrandom();
          int[] arr=new int[50];
          arr = new  gen_random_number().genrandom(arr, yourXvalue);
     }
 }

I Googled this question and this helped me. – Boy Baukema May 10 '13 at 09:26 — Boy Baukema, May 10 '13 at 09:26

Alex · Accepted Answer · 2013-10-18T11:15:11.627

143

You can use Arrays.toString

Log.d("this is my array", "arr: " + Arrays.toString(arr));
// or
System.out.println("arr: " + Arrays.toString(arr));

Or, if your array is multidimensional, use Arrays.deepToString()

String[][] x = new String[][] {
    new String[] { "foo", "bar" },
    new String[] { "bazz" }
};
Log.d("this is my deep array", "deep arr: " + Arrays.deepToString(x));
// or
System.out.println("deep arr: " + Arrays.deepToString(x));
// will output: [[foo, bar], [bazz]]

edited Oct 18 '13 at 11:15

answered Nov 22 '12 at 12:42

Alex

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absolutely correct and acceptable answer. – Mohd Mufiz Nov 22 '12 at 12:46
@user1760556 `tag` can be any string you want. From the javadoc: *"Used to identify the source of a log message. It usually identifies the class or activity where the log call occurs."* – assylias Nov 22 '12 at 13:05
Not working for two-dimensional array. – Deepak Oct 18 '13 at 10:13
1

`deepToString` is working for two-dimensional array – Alex Oct 18 '13 at 11:15

Mohd Mufiz · Answer 2 · 2018-11-08T11:08:03.617

6

Very simple use for each loop much fast then normal for (incremental) loop.

for(String log : array)
{
  Log.v("Tag",log);
}

edited Nov 08 '18 at 11:08

answered Nov 22 '12 at 12:42

Mohd Mufiz

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score 1 · Answer 3 · edited Apr 05 '18 at 13:21

1

You can use for each loop

for(int x: arr){
Log.d(tag,"x:"+x);
}

edited Apr 05 '18 at 13:21

Gowthaman M

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answered Nov 22 '12 at 12:41

Mohammad Ersan

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score 0 · Answer 4 · edited Nov 22 '12 at 12:59

0

Try this way:

for (int i =0 ;i<arr.length;i++)
{
   Log.v("Array Value","Array Value"+arr[i]);
}

edited Nov 22 '12 at 12:59

Echilon

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answered Nov 22 '12 at 12:41

Mehul Ranpara

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score 0 · Answer 5 · edited Jun 09 '15 at 01:16

0

Try this :

for (int i = 0; i < arr.length; i++) {
   Log.d(TAG, arr[i]);
}

What we are doing here is iterating over the array using the for loop to print logcat. Log cat output can be done with Log.d(..), Log.v(..) , Log.i(..) or Log.e(..). See more here.

edited Jun 09 '15 at 01:16

Mike Laren

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answered Nov 22 '12 at 12:42

Binoy Babu

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score 0 · Answer 6 · edited Apr 05 '18 at 13:20

0

You can also try plain old

 System.out.println()

edited Apr 05 '18 at 13:20

Gowthaman M

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answered Nov 22 '12 at 12:42

Aditya K

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print array in the log cat android

6 Answers6