Android讀寫文件的代碼

寫入數據

  public void WriteSettings(Context context, String data){ 
      FileOutputStream fOut = null; 
      OutputStreamWriter osw = null;


  try{ 
   fOut = openFileOutput("settings.dat",MODE_PRIVATE);       
      osw = new OutputStreamWriter(fOut); 
      osw.write(data); 
      osw.flush(); 
      Toast.makeText(context, "Settings saved",Toast.LENGTH_SHORT).show(); 
      } 
      catch (Exception e) {       
      e.printStackTrace(); 
      Toast.makeText(context, "Settings not saved",Toast.LENGTH_SHORT).show(); 
      } 
      finally { 
         try { 
                osw.close(); 
                fOut.close(); 
                } catch (IOException e) { 
                e.printStackTrace(); 
                } 
      } 
 }</pre> 


 讀取數據：
public String ReadSettings(Context context){ 
      FileInputStream fIn = null; 
      InputStreamReader isr = null;


  char[] inputBuffer = new char[255]; 
  String data = null; 

  try{ 
   fIn = openFileInput("settings.dat");       
      isr = new InputStreamReader(fIn); 
      isr.read(inputBuffer); 
      data = new String(inputBuffer); 
      Toast.makeText(context, "Settings read",Toast.LENGTH_SHORT).show(); 
      } 
      catch (Exception e) {       
      e.printStackTrace(); 
      Toast.makeText(context, "Settings not read",Toast.LENGTH_SHORT).show(); 
      } 
      finally { 
         try { 
                isr.close(); 
                fIn.close(); 
                } catch (IOException e) { 
                e.printStackTrace(); 
                } 
      } 
      return data; 
 } </pre> 


 用法：
WriteSettings(this,"setting0, setting1, setting2");
String data[] = ReadSettings(this).split(",");