我制作的应用会询问用户的教师,部门和成绩,然后显示主题列表。
问题是保存主题的最佳方法是什么,以便检索它们并将其显示给用户。
我尝试过XML,但它不起作用,现在我尝试了JSON,但不确定它是否是存储这类数据的最佳方式?
解答:
正如所有人所说,最好的方法是将数据保存在SQLite数据库中。
这是我的JSON的快照
{
"faculty_engineering": {
"name": "Engineering",
"department_prep": {
"name": "prep",
"grade_1": {
"term_1": {
"subjects": [
"Math",
"physics",
"English",
"Realisation",
"subject"
]
},
"term_2": {
"subjects": [
"chemistry",
"Math",
"fekh",
"Geometry",
"Entag",
"Mechanics"
]
}
}
},
"department_systems_and_computer_engineering": {
"name": "Systems and computer engineering",
"grade_1": {
"term_1": {
"subjects": [
"Programming",
"Electronics",
"Math",
"Circuits",
"Measure",
"English"
]
},
"term_2": {
"subjects": [
"Algorithms",
"Electronics",
"Math",
"Fields",
"Religious subject"
]
}
},
"grade_2": {
"term_1": {
"subjects": [
"Math",
"Integrated circuits",
"Systems and signals",
"machines VHDL",
"Numerical Analysis",
"Object-oriented programming",
"Tests",
"Realisation subject"
]
},
"term_2": {
"subjects": [
"Math",
"Logical circuits",
"Automatic Control",
"Electric machines",
"Religious subjects",
"Realisation subject"
]
}
},
"grade_3": {
"term_1": {
"subjects": [
"Math",
"Communications systems",
"Electronics",
"Religious subjects",
"Operating system",
"Digital Control",
"Tests ",
"Transition systems and mechanisms ",
"Power electric systems ",
"Realisation subject"
]
},
"term_2": {
"subjects": [
"Databases",
"Microprocessors",
"Administration and engineering projects",
"Sensors of adapters",
"Religious subjects",
"Realisation subject"
]
}
},
"grade_4": {
"term_1": {
"subjects": [
"Special computer subject",
"Tests",
"Engineering programming",
"Intelligent Systems",
"Computer architecture",
"Interpreters",
"Advanced software",
"Realisation subject"
]
},
"term_2": {
"subjects": [
"Algorithms",
"Advanced software",
"Computer architecture",
"Interpreters",
"Realisation subject"
]
}
}
},
"department_": {
"name": "",
"grade_1": {
"term_1": {
"subjects": [
]
},
"term_2": {
"subjects": [
]
}
},
"grade_2": {
"term_1": {
"subjects": [
]
},
"term_2": {
"subjects": [
]
}
},
"grade_3": {
"term_1": {
"subjects": [
]
},
"term_2": {
"subjects": [
]
}
},
"grade_4": {
"term_1": {
"subjects": [
]
},
"term_2": {
"subjects": [
]
}
}
}
}
}
答案 0 :(得分:2)
如果要查询的数据不在远程服务器上,那么您可以使用Android sqlite数据库来保存和获取数据。
答案 1 :(得分:1)
也许您应该使用SQLite数据库: https://developer.android.com/reference/android/database/sqlite/SQLiteDatabase.html
JSON和XML更有可能用于传输数据,例如使用网络。
答案 2 :(得分:1)
您可以使用它在Android和iOS之间兼容的https://realm.io/。 它更简单快速。
希望它有所帮助。
答案 3 :(得分:0)
如果您想要离线存储,请转到SQLite。
如果你想要云存储,那就选择Google Firebase,因为它可以提供良好的实施抽象,相当大的存储空间和同步连接。