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Android is not an accident, but an inevitable victory over the iPhone. 1. Android is cheaper and its performance is not low. When a consumer chooses a product, the price is a major factor that must be taken into consideration. Although the iPhone is good, the price is prohibitive. Apple is like a BMW or a Mercedes-Benz. Although everyone thinks it is good, most people cannot afford it, but they only have t
advantages of the Observer model?： An abstract coupling between the observer and the observed is very easy to expand, whether it is to increase the observer or the observer. According to the principle of single responsibility, the responsibility of each class is unitary, then how to put each single responsibility into a real complex logical relationship, the Observer model can play a role in the bridge. The observer pattern is typical of loose coupli
allows subclasses themselves to decide at runtime, but because the creator Clas S is written without knowledge of the actual products that'll be created, which are decided purely by the choice of the S Ubclass is used. What are the advantages of the factory method model?： Good encapsulation, the structure of the code is clear. An object creates a conditional constraint, and if a caller needs a specific product object, it is OK to know the class nam
Get used to using Eclipse to launch Android, and want to reduce the shock when you cross over to Android studio.But want to use Android studio to open the Eclipse case (direct Open is not allowed),And don't want to put the eclipsec of Android studio Gradle and two of the Android
The reason why Android mobile phone operating systems have received so wide attention is that their performance is essential. Here, we will analyze the Android performance from its advantages and disadvantages and the application advantages in development, so that you can further master this operating system. Overvie
In game development, I learned from materials and books that two formats of playing audio can be used in our game development: MediaPlayer and SoundPool! PS: Of course, there is another JetPlayer, but the format of the file to be played is quite troublesome, so I will not explain it here. If you are interested, you can study it on your own; Run: MediaPlayer and: SoundPool class! What are their advantages and disadvantages? Or, which one is better
themselves to decide at runtime, but because the creator class is written without knowledge of the actual products that will be created, which is decided purely by the choice of the subclass that is used. What are the advantages of the factory method model?:Good encapsulation and clear code structure. An object is created with constraints. If a caller needs a specific product object, you only need to know the class name of the product. You do not nee
The advent of the 3G mobile phone era, triggering the development of the software market explosion, mobile phones such as the rapid growth of the speed, so that people have questioned, in the end what kind of mobile phone software application is the best, the following to analyze the advantages of Android.First, opennessIn terms of dominance, the Android platform is first and foremost its openness, and the
The advent of the 3G mobile phone era, triggering the development of the software market explosion, mobile phones such as the rapid growth of the speed, so that people have questioned, in the end what kind of mobile phone software application is the best, the following to analyze the advantages of Android.First, opennessIn terms of dominance, the Android platform is first and foremost its openness, and the
If HTML5 applications can emerge in the short term, Microsoft's WP7 will not benefit a lot or even succeed. If HTML5 applications can emerge in the short term, Microsoft's WP7 will not benefit a lot or even succeed. Reply: Technically, it is unlikely that HTML5 applications and games will be smooth and integrated into native applications within one year. HTML5 can only be used for simple applications (such as browsing). native apps have great advantages
Web: simple-you can generate a public link, like this. (These connections can also be opened in a mobile browser and then added to the iOS home screen as an "app.") You can show your work to public users at Proto.io Spaces.On mobile: You can create a free evaluation account for users and allow them to access a project. They can run your prototypes in iOS or Android apps.The difference between a prototype and an appNot much. But it wasn't smooth enoug
1 asynctaskImplementation principle,Applicable advantages and disadvantages Asynctask is a lightweight asynchronous class provided by Android. It can inherit asynctask directly and implement asynchronous operations in the class,AndProvide interface feedback to the currentAsynchronous execution degree(Ui progress update can be implemented through the interface), and finally the execution result is fed back
Recently, several projects have been developed, involving several development modes of android. For the original ecological development, web application development, and hybrid development, I think either of them is the best or the worst. This is based entirely on your own needs, select an appropriate development mode. At the same time, they have their own shortcomings. Based on the actual situation, we should take
Advantages and disadvantages of enumeration and alternative solutions for Android Enumeration should not be used on Android, and memory usage should be replaced with the @ XXXDef annotation. Disadvantages of using Enum Each enumerated value is an object, which increases the memory consumption when it is used. Therefore, enumeration consumes more memory than Integ
A few weeks ago, developers received a preview of the next version of Honeycomb, Android 3.0) on the Android platform. About a month later, the final version of Android 3.0 SDK was released, then the first Android 3.0 device: Motorola Xoom tablet appeared. We have spent some time learning about new sdks, tools, and dev
If there is a direct relationship between the pages, such as activity and the fragment within it, you can pass the data directly through the invocation of the interface. Advantages: direct, convenient. Disadvantage: High Code coupling If it is two activity between the data transfer, there is the process of interface switching, you can use StartActivityor Startactivityforresult. Carry the data with the intent parameter. Advantage: Typically used to
: SQLite store data SQLite database databases.Android's support for the database is good, it integrates the SQLite database itself, each application is easy to use it, or rather, Android relies entirely on the SQLite database, all of its system data and the structured data it uses are stored in the database. SQLite is a lightweight embedded database engine that supports the SQL language and has good performance with very little memory. In addition it
Android enumeration advantages and disadvantages and alternative solutions Enumeration should not be used on Android, which occupies memory. Replace it with the @ XXXDef annotation.Disadvantages of using Enum Each enumerated value is an object, which increases the memory consumption when it is used. Therefore, enumeration consumes more memory than Integer and Str
) method when associating the fragment object with the activity;2. When the fragment object is initially created, call the OnCreate (Bundle) method;3. Oncreateview (Layoutinflater, ViewGroup, Bundle) method is used to create and return the view object associated with the fragment;4. The Onactivitycreate (Bundle) method tells the fragment object that the activity object it is attached to has completed the execution of the Activity.oncreate () method;5. The OnStart () method causes the Fragment ob
The source code is completely open, which makes it easier for developers to grasp the details of the implementation, so as to improve the technical level of the developers and help develop more differentiated applications. The dalvik,android of virtual machines optimized for limited memory, battery, and CPU runs much faster than imagined. Operators (China Mobile, etc.) strong support, the industry chain of hot. A good profit model (3/7 open),
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