我试着用openFileOutput功能，但它不希望编译...犯规承认德功能。即时通讯使用Android SDK中1.6。这是一个SDK的问题？这是一个参数问题？

 进口java.io.FileOutputStream中;
公共静态无效保存（字符串文件名，MyObjectClassArray [] theObjectAr）{
        FileOutputStream中FOS;
        尝试 {
            FOS = openFileOutput（文件名，Context.MODE_PRIVATE）;


            ObjectOutputStream的OOS =新的ObjectOutputStream（FOS）;
            oos.writeObject（theObjectAr）;
            oos.close（）;
        }赶上（FileNotFoundException异常E）{
            e.printStackTrace（）;
        }赶上（IOException异常E）{
            e.printStackTrace（）;
        }
    }
 

解决方案

您的方法应该如下。需要一个额外的上下文作为参数。这种方法，你可以通过你的服务或活动

 公共静态无效保存（字符串文件名，MyObjectClassArray [] theObjectAr，
  上下文CTX）{
        FileOutputStream中FOS;
        尝试 {
            FOS = ctx.openFileOutput（文件名，Context.MODE_PRIVATE）;


            ObjectOutputStream的OOS =新的ObjectOutputStream（FOS）;
            oos.writeObject（theObjectAr）;
            oos.close（）;
        }赶上（FileNotFoundException异常E）{
            e.printStackTrace（）;
        }赶上（IOException异常E）{
            e.printStackTrace（）;
        }
    }
 

Im trying to use openFileOutput function but it doesnt want to compile... doesnt recognize de function. Im using android sdk 1.6. Is this a sdk problem ? Is this a parameter problem ?

import java.io.FileOutputStream;
public static void save(String filename, MyObjectClassArray[] theObjectAr) {
        FileOutputStream fos;
        try {
            fos = openFileOutput(filename, Context.MODE_PRIVATE);


            ObjectOutputStream oos = new ObjectOutputStream(fos);
            oos.writeObject(theObjectAr); 
            oos.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }catch(IOException e){
            e.printStackTrace();
        }
    }

Your method should be as follows. Takes in an extra Context as a parameter. To this method you can pass your Service or Activity

public static void save(String filename, MyObjectClassArray[] theObjectAr, 
  Context ctx) {
        FileOutputStream fos;
        try {
            fos = ctx.openFileOutput(filename, Context.MODE_PRIVATE);


            ObjectOutputStream oos = new ObjectOutputStream(fos);
            oos.writeObject(theObjectAr); 
            oos.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }catch(IOException e){
            e.printStackTrace();
        }
    }