我正在制作一个应用程序，询问用户的教师，部门和成绩，然后显示主题列表 .
问题是什么是保存主题的最佳方法，它可以很容易地检索它们并将它们显示给用户 .
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？
ANSWER:
因为所有人都说最好的方法是在SQLite数据库中保存数据 .
这是我的JSON的一个快照
{
"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": [
]
}
}
}
}
}
4 回答
如果要查询的数据不在远程服务器上，则可以使用Android sqlite数据库来保存和获取数据 .
也许您应该使用SQLite数据库：https://developer.android.com/reference/android/database/sqlite/SQLiteDatabase.html
例如，使用网络，JSON和XML更有可能用于传输数据 .
您可以更简单快速地使用它https://realm.io/ .
希望能帮助到你 .
如果您想要离线存储，请转到SQLite .
如果您想要 Cloud 存储，那么请选择Google Firebase，因为它为实施，相当数量的存储和同步连接提供了良好的抽象 .