android application development for dummies

IntroductionPrevious Android Development tour: Application Basics and Components describes the basics of the application and the four components of Android, this article describes how to activate a group shutdown component. The topics in this article are as follows:

the State management of long-time data (such as cursors. You cannot tolerate lag or pause when an operation is being processed by your application. If an operation is time-consuming and resource-consuming, You need to detach the operation and perform asynchronous processing on it, so that your application remains responsive and users can process their transactions. This principle applies to disk read/write

In the previous programmer's favorite 12 Android Application Development Framework (a), we introduced the top 6 Android application development frameworks, including Xamarin, Phonegap, Corona SDK, etc. Next, the small series will

First, the introduction In the architecture design of mobile applications, interfaces and data are inseparable and not confusing. In most of the development experience, we are using fragment to interface programming, even if the preservation of data is basically only the interface-related control data, very little to do other data preservation, after all, and the development of the principle of the contrar

In Android apps, the most memory-intensive is the picture resource. And on Android, when reading bitmap bitmap, the stack size of the pictures in the virtual machine is only 8M, and if exceeded, a outofmemory exception occurs. Therefore, the memory optimization of the image is an important part of Android application

under a running task in which four activity--are running, when the user presses the home key, returns to the program launcher and runs the new application (actually running a new task), Then the current task is back in the background, and the root activity of the newly opened application is displayed, and after a while the user returns to the application and the

In Android applications, image resources are the most memory-consuming resources. In addition, in the Android system, when reading bitmap, the size of the image stack assigned to the virtual machine is only 8 Mb. If the size exceeds the threshold, an outofmemory exception occurs. Therefore, image memory optimization is an important part in Android

add the following code to the AndroidManifest. xml file of your app: android:name="android.permission.READ_CALENDAR"> android:name="android.permission.WRITE_CALENDAR"> After registering these licenses, you can access your calendar data without any Google login issues. Because the calendar application is not installed in the Android simulator, all testing and

Android Application Development: network tool-Volley (1), androidvolleyIntroduction The Internet has always been a blind spot for me. I took some time to learn how to use the Volley network tool, and learned more through the source code. In Android development, there are ma

API key you can not change the package name of the application, assuming the replacement of the package name we must To configure the API key again, let's describe how to get a digital signatureWe know that we have developed the Android program needs to be signed to him, assuming that no signature is not agreed to be installed on the phone or simulator, then you will have doubts, my usual

API key you can not change the package name of the application, assuming the replacement of the package name we must To configure the API key again, let's describe how to get a digital signatureWe know that we have developed the Android program needs to be signed to him, assuming that no signature is not agreed to be installed on the phone or simulator, then you will have doubts, my usual

People who have worked on Android map application development know that the popular map frameworks are Google, Baidu, and AMAP. For map development on Google and Baidu, you must obtain an api key before being authorized to develop applications. AMAP does not need to be so troublesome. Therefore, this article uses AMAP

Android plug-in development-Verification of four components and Application functions in OpenAtlas With OpenAtlas for plug-in development, plug-in development can be performed almost according to the normal program development pro

) The files generated by the app will be stored in this path All four components of Android need to be configured in the manifest file before use Application configuration is effective for the entire application The activity's configuration takes effect on the activity DDMS Dalvik Debug Monitor Service Dalvik Commissionin

Android provides an application framework that contains various services and provides standard application development methods for application developers. application developers only need to use four components, implement related

Introduction to the development history of 1.AndroidThe origins of 1.1Android: Android was a mobile operating system created by Andy Rubin and later acquired by Google.1.2Android platform Architecture and features: The bottom layer is built on the Linux system, which consists of the operating system, middleware, user interface and application software four layers

jar packs and so libraries to engineering The Libs directory in the development package is copied to the engineering directory as a whole (users of Eclipse), and the Libs directory includes the jar package and the so library of each platform, and the developer can cut the application needs. Galaxy_lite.jar is Baidu's Android public base library, if the project