java - 等效于 Android 中的 NSString writeToFile 和 archiveRootObject ？

Question

在 iOS 上，我使用这些代码行来存储一个大字符串（JSon）......我如何在 Android 上做同样的事情？放置该字符串的文件位置是什么？谢谢

NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];


//make a file name to write the data to using the
//documents directory:
NSString *fullFileName = [NSString stringWithFormat:@"%@/subscriptions", documentsDirectory];
[dataReply writeToFile:fullFileName atomically:NO];

并直接保存数组？像这样？

   fullFileName = [NSString stringWithFormat:@"%@/specialElements", documentsDirectory];
  [NSKeyedArchiver archiveRootObject:specialElements toFile:fullFileName];

specialElements 是一个 NSMutableArray

Answer 1

try
{
    String path = "/data/data/"+getPackageName()+"/test.json";
    File file = getFileStreamPath(path); 
    if (!file.exists())
    {
      file.createNewFile();
    }

    FileOutputStream writer = openFileOutput(file.getName(), Context.MODE_PRIVATE);
    writer.write(data.getBytes());//data is your json in String
    writer.flush();
    writer.close();
}
catch(Exception e)
{
    //exception
}

连同清单文件中的以下权限：

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