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Junior to intermediate 1. What is the content provider? Content Provider is mainly used to realize the function of data sharing between different applications. It provides a complete set of mechanism, which allows one program to access the data in another program, and also ensures the security of the accessed data. Currently, using content pro ...

Android Month 2_Day9_Sqltie database Introduction to SQLite database Database usage and two core classes First, SQLiteOpenHelper II. SQLiteDatabase Batch processing of data using transactions Introduction to SQLite database 1. Lightweight database integrated in Android system 2. Characteristic ...

Your favorite buddies are welcome to pay attention. I will share Android knowledge points and analysis regularly, and keep updating BATJ interview topics. You are welcome to come to discuss and communicate. If you have good articles, you are welcome to contribute. 1. What is ContentProvider ContentProvider is the interface that your own APP op ...

1. File Storage (1) Store data in a file The Context class provides the openFileOutput() method, with the first parameter being the file name (not including paths, all files are saved to/data/data//files/) and the second parameter being the operation mode of the file, MODE_PRIVATE being the default mode, overwriting the contents of the fil ...

Android platform has many orm frameworks that can store data locally, such as ormlite, green Dao, SugarORM and so on. These orm frameworks are basically sqlite-based. The database Realm I'm going to introduce today is a solution to replace sqlite. It has its own database storage engine. It's lighter and faster than sqlite. Most importantly, i ...

0. Introduction Python provides SQLite 3-based modules, which are installed by default in Python 2.7.3. Here we just need to use it. Why call sqlite module in Python? This is because Python is an excellent scripting language (which insults Python a little, but Python can do a lot of tasks as a scripting language), so that we can accomplish s ...

Preface In Android development process, for data storage, we will more or less use database-related operations, so in this little summary, Android using SQLite database skills and methods, is their own review of database knowledge. Project source code This blog is published synchronously XueLong's blog crud Operating SQLite in adb shell ...

Links to source documents Engineering configuration implementation "android.arch.persistence.room:runtime:1.0.0" annotationProcessor "android.arch.persistence.room:compiler:1.0.0" // RxJava support for Room (use 1.1.0-alpha3 for latest alpha) implementation "android.arch.persistence.room:rxjava2:1.0.0" Table definition ...