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return -1; } } return 0; } else { return diff > 0 ? 1 : -1; } } ### [] (II) installation of apk /** Install APK @param context @param filePath */ public static void installApk(Context context, String filePath) { try { /** * provider * Handle the abnormal in ...

public final class RequestOptions extends BaseRequestOptions<RequestOptions> { private static RequestOptions skipMemoryCacheTrueOptions; private static RequestOptions skipMemoryCacheFalseOptions; private static RequestOptions fitCenterOptions; private static RequestOptions centerCropOptions; private static RequestOptions circleCropOption ...

Then let's see how to build an environment for compiling FFmpeg? Build an environment for compiling FFmpeg ========================================================================= FFmpeg provides a complete solution, but this solution is written in C. we download the source code of FFmpeg and decompress it to see what the source code of FF ...

Seven principles of design mode brief introduction The principle of design pattern is actually the principle that programmers should abide by when programming, and it is also the basis of various design patterns (i.e. the basis for why design patterns are designed like this) Seven principles commonly used in design patterns Single responsib ...

Static proxy An object provides a proxy with a fixed role to control access to the object. Proxy classes and delegate classes have a common parent class or parent interface, so proxy objects can be used wherever delegate objects are used. The agent class is responsible for request preprocessing, filtering, assigning requests to the delegate cl ...

Proxy mode (proxy) Agent mode is a structural design mode. It provides an agent (agent class) for other objects (delegate class) to control access to the original object, and allows some processing before and after submitting the request to the object, such as preprocessing the message for the delegate class, filtering and forwarding the m ...