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Effectively solve WebView multi-process crash

This paper introduces an effective solution to WebView multi-process crash. After using the method provided by the official, the problem was only partially reduced. Bugly still received a large amount of crash information about this problem from the background, so that it even ranked Top3 of crash problems. The lock method in the AwDataDirLock class is finally called from the source analysis call chain. The lock method does...

Hongmeng Text, TextField control introduction

In this chapter, we will learn the basic properties of the Text and TextField controls and how to use them. Text is the component used to display strings as a Text area on the interface. TextField provides a text input field.

Open source finishing: Cool Android Loading animation, let users get rid of boring waiting

A good application will often carefully polish the details of various interactions. For example, in order to make the user not feel bored while waiting for some time-consuming operations, an interesting Loading animation would be a good choice. Here are a few cool open source projects on Github that will help your users get to the next level. Ht...

Everything about Handler

Above my own Handler mechanism Handler mechanism for some exploration and thinking, the design intention of the Handler has its own understanding and thinking, so this article we will start from the Android system Handler mechanism source, Take a look at the design of the Android system Handler mechanism.

Principle and implementation of Android JSBridge

JSBridge is nothing new in Android, and implementations vary slightly. Most people know that there is a bug in WebView, see WebView Interface vulnerability and Mobile mounting exploit, although this bug has been fixed in Android 4.2, namely using @javascriptInterface instead of addJ...

Handler Message mechanism (1) Message reuse principle

This article shares the use and reuse of Messages in the Handler messaging mechanism. In Android development, the use of Handler to achieve communication between threads, very convenient, when frequent message communication, every time to new message object, in the creation of the object of the system resource occupation, at the same time GC frequent recycling objects, on memory and system performance also...

Cookie analysis for Android engineers

Cookies were added in HTTP1.1 to address the stateless nature of HTTP by making it "stateful." When we are doing Android development, the existence value and optimization of cookies are often not well understood. This is actually normal. Http (Hypertext Transfer Protocol) is a transport protocol for Web development. And cookie as its...

Android to add goods to the shopping cart animation effect implementation (principle Bezier curve)

It was just a Toast message without adding an animation to the shopping cart. I felt something was missing. Before, I have seen many shopping apps, such as Ele. me, Meituan, JINGdong and Taobao. Some shopping apps will have an animation demonstration effect of adding goods to the shopping cart. Every time I look at myself, I think, if only I could achieve this effect. The opportunity came. X3 and y3 represent x and y of the control points, namely, the figure above...

Complete the development of Flutter application step by step - Complete the home page of gold digging App

Continue above, nuggets app home page to improve. Different tabs display different styles. The WidgetUtil method uses the width of each label retrieved by the previously integrated flustars library and stored in the scrollerIndex array. In this way, each click can slide to the specified position operation. Then in the add dropdown click method isExp field judge...

Android OpenCV (fifty-two) : Harris corner detection

What is a corner point? A corner is an extreme point, that is, a point with a particular attribute. Of course, you can define your own corner properties (set certain entropy values for corner detection). A corner point can be the intersection of two lines or a point on two adjacent things that have different main directions. Angular point usually

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