Écrire dans le stockage interne - Le fichier est vide

Question

J'essaie d'écrire des fichiers texte sur le stockage interne de plusieurs façons. Je ne sais pas pourquoi les fichiers de texte de résultat sont vides.

package com.testandroid; 

public class TestAndroidActivity extends Activity { 
    @Override 
    public void onCreate(final Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     writeToInternalStorage(this); 
    } 

    private void writeToInternalStorage(final Context context) { 
     try { 
      // Way1 
      final PrintWriter writer = new PrintWriter(new File("/data/data/com.testandroid/test.txt")); 
      writer.println("Something"); 

      // Way2 
      final PrintWriter writer2 = new PrintWriter(new FileOutputStream("/data/data/com.testandroid/test2.txt")); 
      writer2.write("Something more"); 

      // Way3 
      final FileOutputStream fos = openFileOutput("test3.txt", Context.MODE_PRIVATE); 
      final PrintWriter writer3 = new PrintWriter(fos); 
      writer3.write("Something of something"); 
      try { 
       fos.close(); 
      } catch (final IOException e) { 
       e.printStackTrace(); 
      } 

      // Way4 
      try { 
       final BufferedWriter writer4 = new BufferedWriter(new FileWriter(new File("/data/data/com.testandroid/test4.txt"))); 
       writer4.write("Something please"); 
      } catch (final IOException e) { 
       e.printStackTrace(); 
      } 

     } catch (final FileNotFoundException e1) { 
      e1.printStackTrace(); 
     } 
    } 
} 

Answer 1

essayer cela

FileWriter outFile = new FileWriter("/data/data/com.testandroid/test.txt"); 
    PrintWriter out = new PrintWriter(outFile); 
    // Printwriter out = new PrintWriter(new FileWriter("/data/data/com.testandroid/test.txt")); 
    out.println("This is line 1"); 
out.close();