Explanation of Android operating system performance

The Android operating system can promote the innovation of many mobile devices, so that the majority of users can experience the best quality and most superior mobile services. Of course, developers will also get a new level of openness, is how to promote this emerging operating system to the market.

The goal of writing this series is to implement it step by step with the instance, and truly understand and learn about Android development from "doing. This is the first article in this series. The goal is to build an example program for Android: notepad, which will be divided into four articles for detailed introduction.

Similar to the WinMain function in win32 programs, the Android operating system naturally has its program entry point. It is specified through configuration in the AndroidManifest. xml file. You can see that the activity node named NotesList has such an intentfilter, actionandroid. intent. action. MAIN, and Category is specified as android. intent. category. LAUNCHER.

This indicates that the activity is used as the entry activity. After the system finds it, the activity instance will be created to run the activity. If it is not found, it will not be started (you can change the MAIN name to try it ). The first 50 pieces of work in the first round of the Android challenge were published. Apart from four pieces of work that are currently expected to be kept confidential, the other 46 introductions have been released. Although I have been named after Sun Shan, I will not be able to read these works.

Try to think about problems with some mobile apps and look forward to tomorrow. These works were selected by hundreds of experts in the field after a complex set of processes. I think we can see not only the development direction of Android, but also a development trend of mobile apps. If you want to share a bowl of cake on the Android operating system.

Or you want to make achievements in the mobile app field. Maybe you should check these works. As a result, I had a glimpse of the leopard and was ready to pull a little bit. However, I did not develop a mobile phone which is just a second to eight classics. I have very little knowledge about the mobile phone application. I am looking forward to discussing it seriously.

If you still think of a mobile phone as a phone call and text message guy, you do not need to study the mobile phone application. Mobile apps not only go beyond the essence of phone calls and text messages, but also go through the realm of taking photos, listening to songs, and playing single-host games.

Began to develop into a variety of network applications. In this award, almost all programs are connected to the Internet .. I think this problem should be viewed in many aspects. First, mobile phone hardware and wireless networks are becoming more and more powerful, which exactly matches users' demands for processing information.

The use of the network can meet the expansion of information needs, it is like a never-ending active volcano always tirelessly sprayed with all kinds of new information. The Network also sets up a more powerful cross-sea bridge for people to communicate with each other. The traditional text message service is in front of it and can only be regarded as a bridge that passes through the creek.

From another perspective, the use of the network has paved the way for a better business model. Although, compared with a single machine, there is a slightly more convenient payment method on the mobile phone through the carrier ...). However, a cup of water and a car won't solve the thirst of the masses. Google made a living gold-absorbing machine specimen on the web. It was a natural idea to transplant it.

What if one day you see a favorite item on the street? If you think the price is too high? If you are not sure whether the content is liked or not? If ...? The Android operating system and goCart bring you a new model. You can use the camera to take the barcode of the product.

The software will automatically identify and find detailed image and text descriptions for your products from the Internet, and even a short section about videos, audios, and so on. At the same time, it also offers you prices for this item elsewhere, coupled with Google Map, and even tells you which store nearby you are selling cheaper than this one.

In this fast mode, you cannot get a picture of your computer at home, or take a photo of your phone for reference at LP. Only your mobile phone can process such information in a timely manner, provide you with a brand new experience. This is not for whom to advertise, But I Think cool is a little excited.

There are many other things to use this feature. For example, Jigsaw can quickly organize the data on the blackboard. Of course, you still need to take photos ...) send it to a friend. PicSay allows you to take a photo and fill in one or two sentences, and upload it to the Internet or share it with friends immediately.

This kind of work can be done only after you come back to the home computer for processing. you can speed up the process through the mobile phone that you carry with you. I think there are still many resources to mine for this purpose, for example, real-time processing of audio and video and more cool image processing can be expanded to SNS, social networks, and new search engines, I was not very aware of this direction. Now I think there may be a great deal to do.