Android读写文件的代码

2015/01/15 39075

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写入数据
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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();
                  }
        }
   }

读取数据：
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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;
     }

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