Use wechat scan QR code < / P > < p > to share with friends and circle of friends < / P > < p > <-- Startfragment -- > < / P > < p > news on May 19, local time Tuesday < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E8%B0%B7%E6%AD%8C "> Google < / a > launched the latest Android 12 beta at the 2021 Google I / O developer conference. Android 12 is redesigned based on a system called "material you", which features huge bubble buttons, constantly changing colors and smoother animation. Sameer Samat, vice president of product management for Android and Google App store, said it was "the biggest design change in the history of Android." < p > although Android has gone through countless design iterations in the past decade, there is a certain reason for Samat to say so. Android 12 new design is full of confidence, not afraid to make all the elements bigger and more interesting < p > in addition to the new appearance design, Android 12 has also added some other features, but there is no doubt that the new design is the most important, giving people a bright feeling < p > Icon: Android 12 has a lot of color choices and personalized pictures < / P > < p > < b > material you < / b > < b > and better widgets < / b > < / P > < p > Google showed a new design language material you at the I / O Developer Conference, and Android 12 is based on this system. Different from the first version of material you, the new system released at the meeting is mainly a set of user interface development principles. Google said that material you will be applied to from the Internet, < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E5%BA%94%E7%94%A8%E7%A8%8B%E5%BA%8F "> applications < / a >, hardware devices to Android system, etc. But that could take a long time to achieve < p > in a word, the new elements in Android 12 beta are the specific implementation of these development principles by Google on pixel mobile phone. Other models may implement these principles in different ways, or even not at all < p > the most striking feature of Android 12 beta on pixel mobile phone is that when users change wallpaper, they can choose to automatically change the system color. Android 12 will automatically extract the primary and secondary colors from the wallpaper, and apply these color combinations to elements such as buttons and sliders. The overall look is neat, but some people don't like the choice of button colors There are also some changes in the lock screen interface. If the user does not receive the notification, the clock display will be large and centered; If a notification comes in, the clock will be smaller, but it will be more obvious. It can choose the emphasis color according to the theme of the system. Users of Android's widget system don't respond well. Many applications don't use widgets, and many haven't updated their appearance since they were first used. As a result, there are a lot of ugly and messy widgets on Android's home screen < p > Google hopes to fix the problem through a new widget system. Like other products of Android 12, Google has added a huge bubble appearance to its home App Design. This interesting design may change most people's view of Android. The most obvious improvement is that when the user moves the widget on the wallpaper, the background color will change slightly, which is more consistent with the background image < p > Icon: new widget effect < / P > < p > Android developers are not necessarily eager to adopt a new widget system, so Google should have a plan to encourage the most commonly used applications to use the widget system < p > < b > bigger buttons and more animations < / b > < / P > < p > the most obvious change of Android 12 is that all design elements are big, have bubble appearance, and have richer animation effects. This will undoubtedly make the whole system clearer and easier to access, but it also means that users see fewer buttons and menu options on the screen < p > simple elements such as brightness and volume sliders are easier to adjust. Animation effects can also bring users a richer visual experience. For example, when the user unlocks or connects the power supply of the mobile phone, continuous light and shadow effects will appear on the screen. The application will expand clearly from the icon position, and drawer components and other elements will fade in and out when sliding < p > more animation means more resources will be consumed and more screen jitter may appear. But Samat said the Android team has optimized the way the Android system displays core elements. The CPU time of windows and application manager is reduced by 22%, the time of system server to enable high performance kernel is reduced by 15%, and the interrupt is also reduced a lot < p > Icon: users can customize colors to match wallpaper < / P > < p > Android system often solves problems through more powerful hardware configuration, such as faster chip speed, higher screen refresh rate and so on. But I hope these are not the necessary conditions to ensure the smooth operation of animation effects on low-end devices. At present, the animation effect on pixel 5 is quite good < p > Android 12 also has a new "overscroll" animation. When the user scrolls to the end of the page, all elements on the screen will be stretched, which is similar to the effect in Apple IOS < p > < b > adjustment of system functions such as notification < / b > < / P > < p > Android 12 also has many changes in notification, Google assistant and power button functions < p > the shadow effect of quick setting and notification basically remains unchanged, but the larger button design means that users see fewer buttons in the folded view or expanded view. The main change in the notice is the overall aesthetic. Like other elements, Android 12's notifications are big and bubbly. Android 12 introduces a huge, easy to click down arrow element to expand notifications. A set of notifications is placed in a larger bubble element. When the user starts to slide the notification, it will automatically become a circle, indicating that it is an object that can be operated independently < p > Icon: adjustment of quick setting and notification function < / P > < p > Google abandoned the idea of creating a new power button menu to realize the control of Google wallet and smart home just one year later. These two functions are just buttons in quick settings, similar to Samsung's solution < p > in Android 12, press the power button to call Google assistant. According to Samat, Google assistant will provide more context aware functions based on the screen users see. For example, pressing the power button of iPhone to enable Siri, and pressing the power button of galaxy to call Bixby < p > < b > new privacy features for camera, microphone and location < / b>< / P > < p > Android 12 also adds many functions to protect users' privacy, mainly focusing on the three key sensors of location, camera and microphone < p > there is a small green dot on the top right of Android 12 screen to show that the camera and microphone are on. There are also two optional switch functions in the quick setting, so users can quickly turn off the camera and microphone completely. When the app tries to call the camera and microphone, the Android system will pop up a dialog box asking the user if they want to reopen it. If the user doesn't make a choice, the app can call the camera or microphone by default, but the Android system will do mute and black processing < p > in terms of geographic location, Google has also added new options to enable users to set application access rights. In addition to limiting geographic access only once or only when the app is open, Google also allows users to set "rough" or "precise" locations“ In theory, the application can't get the exact location of the user because the "approximate" location will make the accuracy of the location obtained by the application lower. Google said it could be helpful for applications like weather < p > Icon: new privacy features < / P > < p > Google has also developed a new "privacy dashboard" specifically for location, microphone and camera. This pie chart shows the number of times each component has been accessed in the past 24 hours, as well as the specific time of each call. Users can access any application settings by clicking the privacy dashboard < p > < b > Android < / b > < b > private computing kernel < / b > < / P > < p > another new privacy feature is "Android private computing kernel" (APCC). Android private computing kernel has no physical chip. In essence, APCC will run a series of Android machine learning functions. These functions are separated from other parts of the operating system and do not allow any type of network access. Google said that the APCC memory function can't actually send or receive data from the cloud, and the only way to communicate with the system's internal functions is through a specific API. Google stressed that this is the security barrier of the "open source" mechanism < p > the functions running in APCC include scene recognition and music playing in Android system. This requires the microphone to monitor the surrounding environment on a regular basis, no doubt the user wants to complete the operation locally. APCC also has the "smart chip" function, which can set the automatic reply function according to the user's common words < p > in a way, Google runs a limited AI in APCC. This shows that Google intends to introduce more AI functions to Android system in the future < p > < b > no information about application tracking < / b > < / P > < p > location, camera, microphone and machine learning are all privacy elements that need to be restricted, but they are not the kind of privacy that every user wants now. In the past few months, the more pressing issue is how to solve the tracking of AD based applications. Apple recently released app tracking transparency, and Google is still planning to block < a target = "_ blank" href=" https://news.163.com/news/search?keyword=Chrome ">Chrome third party cookies in the browser < / a >, using anonymous technology instead < p > how will Android system adjust? There are rumors that Google is considering a system similar to Apple's, but the Google I / O developer conference did not release relevant information. Samat says his team is working on something: "the ecosystem has obviously changed a lot. Google is characterized by being a platform company as well as a company involved in advertising. So we are thinking deeply about how to improve the advertising system. That's what's going on in chrome. " There's nothing to announce about Android App tracking right now. But our position is that privacy and advertising do not need to be directly opposed, otherwise it will not benefit the overall ecosystem of the company. So we're thinking about working with our development partners to release more information later this year < p > < b > other functions < / b > < / P > < p > Google has previously released a series of underlying functions in the early Android 12 developer beta. For example, for visually impaired users to make improved auxiliary functions, scroll screen shots, put the favorite person on the home screen dialogue gadget and so on. Google also announced improved support for third-party app stores < p > in addition, Google also announced the introduction of several new features in Android 12. Android 12 will have a built-in remote control, which can be used with Android TV system. Google has also promised to work with automakers to unlock cars with mobile phones through NFC and UWB. Later this year, some pixel phones and Samsung Galaxy phones will support the car unlocking function, and BMW will also support this function in future models < p > Icon: Android 12's built-in remote control < / P > < p > Android 12 will also make the chromebook laptop more compatible with Android phones. Later this year, laptops with Chrome OS will be able to instantly access new photos in Android's photo library via Wi Fi direct without waiting for them to sync to Google photos, the Google cloud service. Google is still inferior to airdrop in fast file transfer on a variety of devices, but it has made a lot of progress < p > Android has a quick pairing function for Bluetooth devices, but it is not built into the Bluetooth specification. Instead, Google has to work with individual manufacturers one by one to achieve fast pairing < p > < b > Android < / b > < b > system update < / b > < / P > < p > usually only Google's own pixel mobile phone can guarantee timely access to the new Android system update. Over the past few years, Google has made progress in system updates. "Update speed" is 30% higher than last year, said Mr Samat < p > a few years ago, Google changed the Android system architecture with a software called project treble. Project treble makes the system more modular and makes it easier for Android phone manufacturers to develop customized versions of Android, which means faster updates < p > the system update speed of Android mobile phone manufacturers including Samsung has accelerated. But many old models are still slow to update. Most companies don't release updates within a perfectly reasonable time frame < p > fortunately, more and more companies are committed to providing longer-term updates. Google also works directly with Qualcomm to speed up updates. Given that Qualcomm is the main supplier of Android mobile chips in the U.S. market, this should also have a great impact on the update status But the expectation should not be too high. Android updates can't match IOS, and there is always a gap between different mobile phone versions. That's how the Android ecosystem works < p > in terms of function, Android 12 may not be the biggest upgrade, but it is undoubtedly the biggest visual innovation in a period of time. With the passage of time and many iterations, as new ideas emerge in an endless stream, many aspects of the mobile operating system are bound to be out of date. Android 12 is not a complete comeback, but this upgrade will make the whole system feel more coherent and consistent（ Chen Chen) < / P > < p > <-- EndFragment-->