How to check two file exist in same folder?

Question

Is there a way to check two file exists in same folder like music1.mp3 and music2.mp3 in folder Testapp?
This my code check one file:

File f = new File(Environment.getExternalStorageDirectory()+"/Testapp/music1.mp3");
if(f.exists()) { 
   /* do something */ 
} else {
   /* do something */ 
}

Try this https://stackoverflow.com/questions/16237950/android-check-if-file-exists-without-creating-a-new-one — Ankita, Mar 21 '18 at 06:19

Navneet Krishna · Accepted Answer · 2018-03-21T09:10:54.267

1

Do this

File yourDir = new File(Environment.getExternalStorageDirectory(), "Testapp");
for (File f : yourDir.listFiles()) {
if (f.isFile()){
    String name = f.getName();
    if(name.equals("music1.mp3")) {
    // music1.mp3 present
    } else if(name.equals("music2.mp3")) {
    // music2.mp3 present
    }
  }
}

More efficient way as suggested by @Henry below in comments

File file1 = new File(Environment.getExternalStorageDirectory()+"/Testapp/music1.mp3");
File file2 = new File(Environment.getExternalStorageDirectory()+"/Testapp/music2.mp3");
if (file1.exists()) {
 // music1.mp3 present
} else if (file2.exists()) {
 // music2.mp3 present
}

edited Mar 21 '18 at 09:10

answered Mar 21 '18 at 06:19

Navneet Krishna

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What a complicated solution! – Henry Mar 21 '18 at 06:45
Worst possible solution for this. – Rohit5k2 Mar 21 '18 at 06:46
A bit better, but still, it is not necessary to do a directory list and compare file names when you can test for existence directly. – Henry Mar 21 '18 at 08:37
@Henry thanks a lot for the info, i have updated the answer as per suggestions – Navneet Krishna Mar 21 '18 at 08:56

score 1 · Answer 2 · edited Mar 21 '18 at 08:26

1

You can do it by checking the both files parent path

File f1 = new File("pathone");
File f2 = new File("pathtwo");
if (f1.exists()&&f2.exists()) {
   if (f1.getParent().equals(f2.getParent())) { 
      //both in same folder
   } else {
      //diff folder
   }
}

edited Mar 21 '18 at 08:26

Dumbo

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answered Mar 21 '18 at 06:27

Jyoti JK

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How to check two file exist in same folder?

2 Answers2