Study the technical principles of the technical principles of Android Support Library Collection and its application in the Java class library

Android Support Library Collection's framework is a powerful Java class library provided by Android developers, which can help developers handle collection data more effectively.This article will explore the technical principles of this framework and the application in the Java class library. The Android SUPPORT LIBRARY Collections framework is constructed based on the Java collection framework, which aims to provide developers with better performance, stability and ease of use.It brings a lot of convenience to the development of Android applications. There are several main features of this framework: 1. ArraySet and ArrayMap: These two categories are optimized versions of Java's native HashSet and HashMap.They are built on the basis of arrays, providing faster access and search speed.Compared with the standard set class, ArraySet and ArrayMap can better process a lot of data. The following is an example of ArraySet: ArraySet<String> set = new ArraySet<>(); set.add("Apple"); set.add("Orange"); set.add("Banana"); if (set.contains("Apple")) { set.remove("Apple"); } 2. Sparsearray: This class is a sparse array to store a large number of integer indexes and corresponding objects.It saves memory space and provides fast access speed for the sparse index value.Sparsearray is a good choice to replace HashMap <Integer, Object>. The following is an example of Sparsearray: SparseArray<String> sparseArray = new SparseArray<>(); sparseArray.put(1, "Apple"); sparseArray.put(2, "Orange"); sparseArray.put(3, "Banana"); String fruit = sparseArray.get(2); 3. LongSparsearray: This class is similar to Sparsearray, but the type of indexing is long.It is usually used to use the LONG type as an index. The following is an example of LongSparsearray: LongSparseArray<String> longSparseArray = new LongSparseArray<>(); longSparseArray.put(1234567890L, "Apple"); longSparseArray.put(2345678901L, "Orange"); longSparseArray.put(3456789012L, "Banana"); String fruit = longSparseArray.get(2345678901L); Android support the Library Collections framework provides convenient and efficient set processing tools for Android developers.Developers can choose suitable set classes according to their needs to improve the performance and stability of the application. It is hoped that this article will be helpful to understand the technical principles of the technical principles of Android Support Library Collections and applications in the Java library.If necessary, please refer to the above example code for practice and further exploration.