android中的數據保存

一：保存數據到手機內存：

       核心代碼：

public void saveFile(String filename, String content) throws Exception {

 

@SuppressWarnings({ "unused", "static-access" })

FileOutputStream fileoutStram = this.openFileOutput(filename,

this.MODE_PRIVATE);

fileoutStram.write(content.getBytes("utf-8"));

 

fileoutStram.close();

}

二：保存數據到手機SDcard：

       核心代碼：

public void saveToSd(String filename, String content) throws Exception {

 

@SuppressWarnings({ "unused", "static-access" })

File f = new File(Environment.getExternalStorageDirectory(),filename);

FileOutputStream out = new FileOutputStream(f,true);

out.write(content.getBytes("UTF-8"));

}

    權限設置（使用sdcard）：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>