Android Basic Beginner Tutorial--1.2.1 using Eclipse + ADT + SDK to develop Android APPtags (space delimited): Android Basics Beginner Tutorial1. Preface
Here we have two paths to choose, directly using the encapsulated ADT Bundle for developing Android, or configuring it YourselfAs
. newinstance (googlemapoptions options) to specify attributes. If mapview is used, you can use new mapview (context, googlemapoptions) to specify attributes. Of course, some of these attributes can also be set through uisetaskus = MMAP. getuisetask.
Package COM. example. googleMap; import COM. google. android. GMS. maps. googleMap; import COM. google.
A few days ago in g+ see Google developers site, there is an Android series of articles, share to personal Weibo, weekend idle to learn to write the next, the simple translation of the next, did not expect a out of hand, six articles are all translated, Some places omit the description of some examples or change another expression, and if there is an inaccurate understanding of the place, still look.
After reading ~~~ The mainactivity is modified only in the original project. The source code is as follows:
Import COM. google. android. GMS. maps. cameraupdatefactory; import COM. google. android. GMS. maps. googleMap; import COM. google.
Speaking of Android phone, most people's impression is a bit of time to become a little lag, some programs in the run inexplicably crashes, open the System folder A look, found a lot of files, and then use the mobile phone butler APP constantly clean optimization, just feel the speed slightly improved point, Even if the mobile phone in a variety of performance in front of the software score ahead, or feel n
The launch of Android 4.4 , power-saving technology, Google also said that the improvement! Let's get to know what's going on with Android 4.4 Power-saving technology !Test conclusion:1) The most power-saving of the off-screen standby:A) any app including background service should minimize the number of wake-up CPU, su
Speaking of Android phone, most people's impression is a bit of time to become a little lag, some programs in the run inexplicably crashes, open the System folder A look, found a lot of files, and then use the mobile phone butler APP constantly clean optimization, just feel the speed slightly improved point, Even if the mobile phone in a variety of performance in front of the software score ahead, or feel n
Recently, sans serif, a Google Engineer, published a blog post describing the Android system architecture very clearly. Huang Xiaoqing, President of China Mobile Communications Research Institute, recommended this article on Sina Weibo, I think the introduction to Android in this article is very good. You can look at the Andr
abstraction does not have a significant increase in efficiency, you should try to avoid them.9) Use Nano Protobufs for serialized dataProtocol buffers is a language-independent, platform-independent, well-extensible protocol designed by Google to serialize structured data. Like XML, it's lighter, faster, and simpler than XML. If you need to implement a protocol for your data, you should always use the Nano Protobufs in the client's code. The usual pr
accurate and rich. Similarly, compared with today's General smart phone software platforms, the Android platform is not as rich as a general smart phone, and even can be executed as long as 32 MB of memory usage.
Obviously, the focus of Google Android applications is on the lowest hardware usage, the most open and standard software architecture and platform, and
Selection of development toolsDevelopment tools I will choose Android Studio, which is the official Google-designated Android development tool, is currently 1.2.2 stable version, 1.3 of the preview has been released. There's no need to say much about Android studio, and most of the
The theme of Android theme developers, if you want to replace the Third-party application icon, you must know the application of the package name. Actually want to know the application of the package name is very simple, directly in the browser to open Google Play or pea pod, open an application page, look at the URL you will find that the URL last "/" after the character is the application of the package n
(notification) background color changes with the background color of the app navigation bar (top title).This is also called the immersive status bar, which is proposed by Google in more than 4.4 of Android systems.The style is as shown in the figure:
if (Build.VERSION.SDK_INT >= build.version_codes. KitKat) {
GetWindow (). Addflags (WindowManager.Layo
for the Get method and the other for the Post method. As follows:
OK. I'm done. Isn't it easy? after reading the Code, are you planning to say hello to Volley with httpclient and httpurlconnection. In the end, we hope that the Android system will be better and better. Let's make sure that we can walk in the technology world, Yeah ~~~~ Let's take a look, with a Volley publicity picture! Go, Go home, it's raining out! By the way, I almost forgot that I
GoogleAPIs-based application
1. Create a new project
Just like creating a common android app, File-> new-> other-> Android Project. we name the Project googleMapApp. Note that, select Google APIs when selecting Target.
1. Necessary modifications
Open the AndroidManifest. xml file. To use
Create an Android projectThe Android tool is required to create an Android project on the command line (the tool is provided by the Android SDK, located in the command usage [1]:$ android Create project \--path path/to/your/project \ Target: build goals. The
. Keep in mind that a little bit is a big problem. If you have the opportunity to optimize a small portion of your code, be afraid it may be minimal and don't give up optimization.
Android Memory Management (HTTPS://WWW.YOUTUBE.COM/WATCH?V=_CRUQY55HOK) This is the old video of Google IO 2011. It still has a lot of meaning. It shows how Android manages the mem
: @ com.android.dx.command.dexer.Main.main (main.java:199) at Com.android.dx.command.Main.main (main.java:103)Yes, the number of Dex file methods in your app exceeds the maximum of 65536, so simply put, the app is bursting.So let's see why this error is caused:InAndroidSystem, aAppAll of the code is in aDexFile inside.Dexis a jar-like store that has manyJavaCompiles the archive file for the byte code. Beca
Android requires that each application be digitally signed before it can be used. The signature contains information such as the key, creator, and Creation Unit, and is saved in a keystore. Google map provides the map service for every registered application. application developers need to transmit the keystore fingerprint to Google to obtain the API key. When ap
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