title: How to set button invisible android
body: <p>So I tried to make A button invisible, I searched first the forum for the answer and tryed it but it just doesn't work. </p>
  
  <pre><code>int level=0;
      try{
          String FILENAME = "TowerFile";
          FileInputStream fos = openFileInput(FILENAME);
          byte[] b = new byte[1];
          fos.read(b);
          fos.close();
          if(new String(b).equalsIgnoreCase("1")){
              level=1;
          }
          if(new String(b).equalsIgnoreCase("2")){
              level=2;
          }
          if(new String(b).equalsIgnoreCase("3")){
              level=3;
          }
          if(new String(b).equalsIgnoreCase("4")){
              level=4;
          }
          if(new String(b).equalsIgnoreCase("5")){
              level=5;
          }
      }catch (java.io.FileNotFoundException e) {
      } catch (IOException e) {
              e.printStackTrace();
      }
  
      Button button1 = (Button) findViewById(R.id.button1);
      Button button2 = (Button) findViewById(R.id.button2);
      Button button3 = (Button) findViewById(R.id.button3);
      Button button4 = (Button) findViewById(R.id.button4);
      Button button5 = (Button) findViewById(R.id.button5);
  
  
  
      if(level==1){
          button1.setVisibility(View.INVISIBLE);
      }
  </code></pre>
  
  <p>So I first get A variabel out of my file, and then I want to make A button invisable depending on the output. I get the wright number out of my file but it doesn't do anything, I also did 0 and gone but nothing works</p>