developing android apps android fundamentals

Developing Android Apps with Kotlin (IV): Custom views and Android extensions @author ASCE1885 's Github book Weibo CSDNOriginal link After reading the extension function and the default value of this article, then what to introduce next? As we said in the first article in this series, Kotlin makes

1. Software PreparationVirtualbox-4.3.12-93733-win:vibox Virtual Machine SoftwareAndroid-x86-4.4-rc1.iso: Android ISO image2. Install Vibox, by default3. Install the android-x86 virtual system on the virtual machineBasically, you choose the default value. The size of the memory, CPU, and hard disk is adjusted according to your needs. My configuration is memory: 512M CPU: Two x HDD: 2GReference: Links4. How

Java, the official website claims that Kotlin can be mixed with 100% and Java. With the launch of JetBrains, idea can be better supported. Disadvantages The associated jar packages that support Kotlin will be broken up and packaged into the APK. This part of the content will eventually increase the apk size by about 700k. This is a much better situation than the previous groovy, barely acceptable. There are too few developers using Kotlin compared to Java. The birth ti

C # language features, simple, fast and efficient. This time we do mobile development through C # and XAML.1. Development tools Visual Studio 2015 or Visual Studio 2017. Of course the latest preview version of Visual Studio 2017 contains Xamarin live player directly supporting the development of debugging iOS apps under Windows.2. Configuring the Mobile development environment3.android SDK Configuration4. C

we create a UI for the layout alone, we create an app that abuses memory, and it has a nasty delay in the UI. To achieve a smooth, low-footprint UI, the first step is to search your app to find out the potential bottleneck layout. Use the Hierarchy Viewer tools tool that comes with the Android sdk/tools/.Another good tool is lint, which scans the application's source code for possible bugs and optimizes control results. Recommendation 10: How to fix

create a UI for the layout alone, we create an app that abuses memory, and it has a nasty delay in the UI. To achieve a smooth, low-footprint UI, the first step is to search your app to find out the potential bottleneck layout. Use the Hierarchy Viewer tools tool that comes with the Android sdk/tools/.Another good tool is lint, which scans the application's source code for possible bugs and optimizes control results.Recommendation 10: How to fix the

'); } The PHP service executes the auth.php file before processing each request. If UA (useragent) does not match, the program exits with exit. Android previous app for one user, each app directory only allows the app to access the user, So unless the phone is rooted, other apps can't read the data in the Phpdroid app directory. You can access the PHP service by reading the UA file in the Mainactivity.java

pull or sleep state, which is why you should use Alarmmanager or configure attribute stopself () at the end of the service.Recommendation VIII: Other considerationsCheck the status and network status of the battery before making the overall update, and wait for the best state for a large-scale reload operation;Let the user see electricity situation, such as update cycle, background operation;Implementing a low memory footprint UIRecommendation IX: How to find layout display problemsWhen we crea

1. Axml2. Activity.cspublic class Bookingdetails:activity {private TextView timedisplay; Private Button Picktime; private int hour; private int minute; const int time_dialog_id = 0; Private TextView Datedisplay; Private Button pickdate; Private DateTime date; const int date_dialog_id = 1; Private DateTime Serverdatetime; protected override void OnCreate (bundle bundle) {Setcontentview (Resource.Layout.BookingDetails); Base

Python is a dynamic language, relatively concise. Android does not directly support the development of applications using Python, and requires the use of other middleware or libraries. Pythonforandroid provides support for the Python language on the Android platform; CLE supports the interaction between Python and Java, while providing a common interface that can be used in many other languages. Wrapandroid

1. Develop Android app to use hardware Access Service~/android-2.3_r1/packages/experimental/freg----Androidmanifest.java----ANDROID.MK----SRC----Shy/luo/freg----Freg.java----Res----layout----Main.xml----values----String.xml----drawable----Icon.pngFreg.javaPackage Shy.luo.freg;import Android.app.activity;import Android.os.servicemanager;import android.os.Bundle;import Android.os.ifregservice;import Android.o

If you want Google Play to do one of the most unsuccessful cases, then the best secret is the interface is extremely slow, power consumption, memory consumption. Then you get negative comments from the user, and then the reputation stinks. Even if your application is well designed and creative, it's useless.Every problem that affects product efficiency, such as power consumption or memory footprint, can affect the success of your app. That's why it's important to ensure that you're optimizing, r

All your favorite Android appsNow on Windows PC A startup called bluestacks has developed an android runtime environment for the Windows operating system. it will enable users to run Android applications alongside conventional Windows software on Microsoft's operating system. the technology impressed some major investors who have supplied $7.6 million in Series

Android and iPhone apps can help you! Of course, there will also be some unique independent applications that you may need to download. 3. Use apps for price comparison during shopping The prices of products in some stores are always high. If you have a smart machine application, you can see which one is cheaper than your own one. By scanning the bar code behind

Android Application Fundamentals-basic knowledge of Android applicationsApplication Fundamentals-basic Application knowledgeKey classes-Key classes Activity Service BroadcastReceiver ContentProvider IntentIn this document -- In this article Application Components -- Application Components Activati

Android calls third-party apps, android third-party apps Private List Private PackageManager mPackageManager; Private List Private Context mContext; /** * Check the system application and open */ Private void openApp (){ // Application filtering Conditions Intent mainIntent = new Intent (Intent. ACTION_M

Experience Report: differences between Android and Apple mini apps Many may ask: What is the difference between a Applet and a web page browsing in it? First, the small program runs in full screen mode, and the interface is similar to accessing an APP. It is more immersed than accessing h5. Secondly, Its browsing experience is more stable. However, this is not enough unless ...... After entering the appl

Android -- eliminate the error "Permission is only granted to system apps", android -- apps Original article: http://blog.csdn.net/gaojinshan/article/details/14230673 The following configuration is used in AndroidManifest. xml: The following error occurs: Permission is only granted to system

Android: Java code for normal installation and installation of apps, and Silent Installation and uninstallation of Android appsDifferences After you perform normal installation and uninstallation, a prompt box is displayed, which is the same as opening the APK file in the File Manager for installation and uninstallation. Perform Silent Installation and uninsta

Enable animation implementation for android apps and enable animation for android appsFor example, if A. java enables an animation, it then enters B. java. 1. A. java Protected void onCreate (Bundle savedInstanceState ){Super. onCreate (savedInstanceState );Log. I ("START Animation", "Start Animation ");// Remove the titleRequestWindowFeature (Window. FEATURE_NO_