ringtone environment#directory_pictures PicturesEnvironment#directory_movies VideoMethod:GetdatabasepathExplanation: Saving a database file created through Context.openorcreatedatabaseMethod:GetpackagecodepathExplanation: returns the full path to the Android installation package, which is a zip archive that contains the application code and the assets file.Method:GetpackageresourcepathExplanation: Returns the full path of the
Eclipse can also compile Android apps, but Eclipse found that after the upgrade bundle too many things, a new project can not be compiled in the past, the review of resources will sometimes error, and large-scale application eclipse compiled is extremely slow, most of the case is basically compiled, but Eclipse is only suitable for editing code, not for compiling
It took hours to finish the test, and Mono for Android launches other hidden apps with one app.Look directly at the code:Hide App (launched) to configure the manifest file as follows, remove the original two tags and modify it to only one dataandroid:exported=" true ">iocpdroid. Iocpactivity"android:scheme="com.iocp"/>It is normal for the app to be launched without launch, because you are not adding it in t
the code above, using JavaScript to build an Android activity, is not cool!Of course it's also possible to write iOS native apps, which is not the coolest and even cooler, it also provides a set of "public" APIs, and a set of UI control libraries that can be described in XML, so you can define the interface and generate corresponding local controls on different platforms.Pagexmlns= "Http://www.nativescript
As a result of open source of Android project, the market of n many Android software appeared. In order for us to develop the software to have more users to use, we need to release to the N-market, software upgrades, we also have to go to the Android Market to update, to increase our workload. So it is necessary for us to add Automatic Updates to our
so on. For example, "*" means matching any class name but does not include the package delimiter, while "* *" matches any class name and includes any number of package delimiters. So the code we commented on above means the following: the first line: all methods that keep all classes under Com.ttdevs.proguard and sub-packages are not confused, and the second row keeps all methods and member variables of the class under Com.ttdevs.proguard and all the classes under the sub-package are not confus
View.setelevation () method in your code.Set the panning of a view using the View.settranslationz () method.The new Method Viewpropertyanimator.z () and Viewpropertyanimator.translationz () can make it easier for you to change the height of the view. For more information, see E mentor's Android app development video tutorial .You can also define these files in an XML file using the Statelistanimator method
most are translated by Google's official documents. Because of the time problem, coupled with their own English is bad enough, the recent slow. However, such a down, plus some of their own code exercises, for the material design can be basically used. Unfortunately, most of the style is not backward compatible, had to wait 5. There are some big God in the Internet has been open source some open source components, we can take this curve to salvation, the next time in a special collation. This ar
the flag variable is 1, indicating that a connection was generated.When currentstate-historystae =-1, the state is connected to a break, at which time the flag variable is 0, indicating that a fracture has occurred.Create a function to get the Currentstae:public int getcurrentstate () {return this.manager.getWifiState () = = wifimanager.wifi_state_enabled? 1:0;}Next we modify Mythread's Run method as follows:@Overridepublic void Run () {if (historystate = =-1) {currentstate = Getcurrentstate ()
The previous chapter documented the cross-application launch service, before learning the difference and usage of startservice in Bindservice.Using the Bindservice method, the activity requires the service to return a binder object, so if two applications are implemented, this involves a aidl concept.
Aidl (Android Interface Definition Language) is an IDL language used to generate interprocess communication between two processes on
that the device can run the Android 4.4 system smoothly with just 512MB of memory. In addition, Google provides developers with memory usage analysis tools to help developers better monitor their applications and reduce RAM usage."512MB of Memory enough" such a message is really ecstatic, but we also do not be happy too early, after all, pretending not to be loaded with the use of not good is a different thing. Google says 512MB of memory is enough,
, although the name is slightly different, but the bottom-up implementation still through the above four ways.1.Activity implements value transfer between two appsSuppose you have two apps APP1 and APP2, and you want to start APP2 in Activityb by clicking on a button in the Activitya in App1 or another control's click event. The steps are as follows:1. Exposing the ActivitybFor example, now that a loginactivity needs to be exposed, you can modify the
for animation:
Z = elevation + Translationz
Shading of views of different heightsSet evelation in the layout file android:elevation and use the method in your code View.setElevation() .Set the panning of a view using the View.settranslationz () method. New method viewpropertyanimator.z () and viewpropertyanimator.translationz () allows you to change the height of the view more easily. A lot of other information, see Viewpropertyanimat
There are several ways to implement multi-language switching for Android applications, and there are a lot of information on the web, and there is a simple and effective way.The steps are as follows:Create a new folder in the resource file Values-en, Create a new Strings.xml, copy the contents of the Strings.xml in the default values folder to Strings.xml in Valu
The four ways Android boots are standard,singletop,singletask,singleinstence, respectively.Standard is the most common way to start an activity and is the default way to start. When you start an activity, he goes to the top of the stack at the back of the stack. The system does not control whether the stack has the same activity, in the same way as after-in first-out.Singletop mode is when the activity starts, the system first determines whether the t
part, translation for animation:
Z = elevation + Translationz
Shading of views of different heights Set evelation in the layout file android:elevation , using methods in your code View.setElevation() .Set the panning of a view using the View.settranslationz () method. New methods ViewPropertyAnimator.z() and ViewPropertyAnimator.translationZ() can make it easier for you to change the height of the view. For more information, see View
a custom notification on a wearable device, you can use standard notification APIs (API level 20) instead of the support library.1. Create a layout and set the content view as the foreground activitypublic void OnCreate (bundle bundle) { ... Setcontentview (r.layout.notification_activity);}2. Define the necessary properties of the activity in the Android manifest file so that the activity can be rendered during the context flow of the wearable
The meaning of the signature1. to ensure that every application developer is legally2. prevent some malicious tampering by using the same package Name to confuse the replacement of an already installed program. 3. ensure consistency of our release version (e.g. Automatic Updates will not be installed because of inconsistent versions)Here's a look at the specific steps of signing:1. Right click on the project to select Export, pop up the following window2. Select Export
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