Objective:The previous several articles mainly learned the thread as well as threads pool's creation and the use, today to learn the Asynctask asynchronous task, learns under Asynctask What solves the problem? But what is its disadvantage? What is the so-called enemy victorious!Create a background:We all know that the Android application is a single threaded model, in which the child threads cannot directly
Error description
Today, I added the Jackson development package to the Android Studio project, which caused the following error when compiling the runtime:
Error:Execution failed for task ‘:app:transformResourcesWithMergeJavaResForDebug‘.> com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/NOTICE
Differences between Android TV app and mobile app: androidappOne of the company's projects is for android TV. Thanks to the daily report, summary: android TV app presents the difference between the ui and mobile app.The main diffe
Android learning route (3) run your Android app, route android
If you have created your Android project according to the previous lesson, it contains the default "Hello World" source file, allowing your project to run immediately.
How do you run your application? Two things:
Android app Development in some cases need to have a delay function, such as the app home page display 3 seconds, and then automatically jump to the login page situation, which is like a preload, but this preload may be completed in an instant, support less than 3 seconds, which is required to do time-delay processing.Here are three ways to do this:One, thread1 N
The page appears blank when you make an Android or iOS app callMy backend was developed in PHP. I am the first to call the unified next order generation, generate prepay_id pre-paid order number, the code is as follows:
config[' money ') *100; $notify _url= $this->config[' Notifyurl ']; Notification url//set the unified Payment interface parameters//settings required parameters//appid filled, the merchan
One app in Android launches another application generally there are 2 different cases,The package name of the application being launched is known and unknown in two cases:1 The package name of the app being launched is known: /** launches another applied code, where the app's package named PackageName, the application's entry is packagename.mainactivity,
current task.
So, if we want to not let the system kill our app, we can optimize it from the process level, memory consumption and so on.
ConclusionThis article plus gc those things, we talked about two of theoretical knowledge, I believe you have a general understanding of the memory management of Android, the following will introduce some memory
The fluency of the Android system has been compared to iOS and is considered inferior to the latter. This aspect is related to the uneven quality of the Android device, on the other hand, and the implementation of the Android system. For example, before 3.0, the Android application UI drawing does not support hardware
it in a position that responds to intent.4. Startup Task (Task)Intent filter with "Android.intent.action.MAIN" Action and "Android.intent.category.LAUNCHER" The activity of category will be marked as the entry of the task. Activity with these two tags will be displayed in the Application Launcher (Application Launcher).The second important point is that the user
: Identify the app that starts. ※ The following details are describedHost: Proper descriptionPath: The key※ required to pass the value is not also availableQuery: Get the value of key and Value※ no also canWrite it well as a test, as follows:Next comes the Android side.First, add the following to the main activity of Androidmanifest.xml. (given when activating activity)* Items must be addedThe contents of t
)Application name Get method: Packagemanager.getapplicationlabel (ApplicationInfo)Access method using permissions: Packagemanager.getpackageinfo (packagename,packagemanager.get_permissions). requestedpermissionsGet the specific information method by ResolveInfo:Package name Get method: Resolve.activityInfo.packageNameIcon Get Get Method: Resolve.loadicon (Packagemanager)App Name Get method: Resolve.loadlabel (Packagemanager). ToString ()"
==================== Problem Description ====================Heroes, Ben does not understand Android, ask a solution can be achieved:An already released app, this app has a button when it goes in, the normal situation is we click this button by hand, will trigger this button event;Now I want to develop an Android
Original: Android Project Combat (22): Launch another app or restart the appFirst, launch another appCurrent company project needs, a main app, need to open some small apps, these small apps are integrated unity, but still Android program (all small app package name is known
typically an application includes multiple activity We're using the program is, a activity to another activity activity and then we press the back button and we can return it in the open order. android task and back Stack Task A collection of pages is stored, and the collection is arranged into a set called Back Stack , the purpose of the preser
Android application development process, there may be needs, such as: Jump to the application market to download applications, jump to the application market to their own application scoring, jump to the application market to update their own applications. So how do you jump to the app market?Possible ways to jump everyone knows, the method is as follows:static void goToMarket(Context context, String packag
How can I start or install app B in APP A in Android?
When I saw other people's game strategies and thought about how to add new features to my game strategy, I checked some information about how to start or install app B in APP A in And
In the normal Android development work, we often need to run time-consuming operation, sometimes for the user experience also need to display a waiting box, I was the previous practice is to open a thread, and then use the handler message to display and close the waiting box and related UI actions. Assuming that the task is much more, the frequent new thread makes the code seem confusing and not manageable,
recommended to use these two values. 3, remove android:icon= "@drawable/ic_launcher" resources Ah, and so on ... But after you've tried each method, you find that it works but there are other problems: 1, if removed, it means that the app does not start the portal, This does not show the effect of the icon, but then our application can not run. 2, let's take a look at the instructions on Android D
============ Problem Description ============Heroes, Ben does not understand Android, ask a solution can be achieved:An already released app, this app has a button when it goes in, the normal situation is we click this button by hand, will trigger this button event;Now I want to develop an Android
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