Android 文件操作

最新推荐文章于 2021-09-27 11:31:49 发布

原创最新推荐文章于 2021-09-27 11:31:49 发布 · 370 阅读

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#android #文件操作

写入文件

public static boolean saveObject(Context context, Serializable serializable, String file) {
        FileOutputStream fos = null;
        ObjectOutputStream oos = null;
        try {
            fos = context.openFileOutput(file, Context.MODE_PRIVATE);
            oos = new ObjectOutputStream(fos);
            oos.writeObject(serializable);
            oos.flush();
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        } finally {
            try {
                oos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }

            try {
                fos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }

        }
    }

读取文件

public static Serializable readObject(Context context, String file) {
        FileInputStream fis = null;
        ObjectInputStream ois = null;
        try {
            fis = context.openFileInput(file);
            ois = new ObjectInputStream(fis);
            return (Serializable) ois.readObject();
        } catch (Exception e) {
            e.printStackTrace();
            if(e instanceof InvalidClassException){
                File data = context.getFileStreamPath(file);
                data.delete();
            }
        } finally {
            try {
                ois.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                fis.close();
            } catch (IOException e) {
                e.printStackTrace();
            }

        }
        return null;

    }