读/写内部存储android

我有一个关于android内部文件的问题..我试图写入一些数据到一个文件，然后读回来，但是，它似乎我不能写入数据到文件，除非我将其转换为整数第一..反正是有，我可以节省两倍或浮动值..我说我想用下面的代码：读/写内部存储android

FormatCluster formatCluster = ((FormatCluster)objectCluster.returnFormatCluster(ofFormats,"Calibrated")); 
if (formatCluster != null) { 
//Obtain data for text view 
calibratedDataArray[0] = formatCluster.mData; 
calibratedUnits = formatCluster.mUnits; 
A.setText("data: " + formatCluster.mData); 

String filename = "myfile"; 
//String string = "Hello world!"; 
FileOutputStream outputStream; 

try { 
    outputStream = openFileOutput(filename, Context.MODE_PRIVATE); 
    outputStream.write((int)formatCluster.mData);//here I don't want to cast the value to integer 
    outputStream.close(); 
} catch (Exception e) { 
    e.printStackTrace(); 
} 

//testing.setText) 

double ch; 
StringBuffer fileContent = new StringBuffer(""); 
FileInputStream fis; 
try { 
fis = context.openFileInput(filename); 
try { 
while((ch = fis.read()) != -1) 
testing.setText(fileContent.append(ch)); 
} catch (IOException e) { 
e.printStackTrace(); 
} 
} catch (FileNotFoundException e) { 
e.printStackTrace(); 
}

来源

2013-05-02 Kopiko

什么类型是FormatCluster.mData？ – dacwe 2013-05-02 13:18:15

@dacwe是双重的 – Kopiko 2013-05-02 13:21:22

信封您的InputStream和OutputStream与DataInputStream和一个DataOutputStream类。这些类有你需要的方法

来源

2013-05-02 13:22:05 eltabo

你能否介绍一下如何做到这一点的教程？ – Kopiko 2013-05-02 13:23:40

http://journals.ecs.soton.ac.uk/java/tutorial/java/io/dataIO.html – o0rebelious0o 2013-05-02 13:24:59

读/写内部存储android

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