title: Saving data into my Database not possible...App ends
body: <p>Hey everyone ;) I have a new question again :D 
  I can open my app now and insert the data into the fields, but as soon as i click the save-menu-item it aborts ... i posted the piece of code at the end of which i think where the error lies. 
  Hope you can help me ;)</p>
  
  <pre><code>//KFZ-Daten updaten (UPDATE)        
                  if(getIntent().hasExtra("id") == true)
                  {
                      long l = getIntent().getExtras().getLong("id");
                      myDB.execSQL("UPDATE "+wechsel.MY_DB_TABLE+" SET "+
                              "name = '"+KfzName.getText().toString()+"', "+
                          "model = '"+KfzModel.getText().toString()+"', "+
                          "bemerkungen ='"+KfzBemerkungen.getText().toString()+"', "+
                          "kraftstoffart ='"+i+"', "+
                          "tankinhalt = '"+KfzTankinhalt.getText().toString()+"' "+
                          "WHERE _id = "+l+";"); 
                  }
  //Neues KFZ in Datenbank speichern (INSERT)             
                  else
                  {                   
                      myDB.execSQL("INSERT INTO "+wechsel.MY_DB_TABLE+"name,"+ 
                                                                         "model,"+ 
                                                                         "bemerkungen,"+ 
                                                                         "kraftstoffart,"+ 
                                                                         "tankinhalt) "
                              +"VALUES ('"+KfzName.getText().toString()+"',"+
                              "'"+KfzModel.getText().toString()+"',"+
                              "'"+KfzBemerkungen.getText().toString()+"',"+
                              "'"+i+"',"+"'"+
                                                 KfzTankinhalt.getText().toString()+"');");
                  }
                  finish();
                  return true;    
              }
              else
              {
                  Toast toast = Toast.makeText(this, "Bitte geben Sie einen Namen für das Fahrzeug ein!", 
                                                                     Toast.LENGTH_SHORT);
                  toast.show();
              }
          }
          return false;
      }
  }
  </code></pre>