The following section describes how android and javascript call each other. In this way, the UI is much simpler to design, and the UI can also be designed to be cross-platform. Now there are a lot of front-end web app frameworks, such as sencha and jquery mobile. We believe that with the development of web apps in the future, we can also use html to design an int
Onresume function is executed, the application is displayed ... In fact, this is an inaccurate statement, because from a system level, an Activity after Oncreate/onstart/onresume these life cycle, just completed the application of some of its own configuration, such as window of some properties of the settings/View tree establishment (Just build, and not show, that is, just call the inflate only). Later Viewrootimpl also calls two times performtraver
will only be shown in the test phase, the online will only show your app nameAbout validation ...SMS send completion can call the official authentication interface for correctness check, these are done on the mob server, we only need to know the results, call method See official documentshttp://wiki.mob.com/sms-android
levels platform (System), shared, media, and application-customized certifications. Different certifications can enjoy different permissions.C Permission Group (permission-group): A permission group is defined to describe a set of permissions that have common attributes.d permissions (permission): Permissions are used to describe whether you have the power to do something. The permissions in the Android system are hierarchical and are divided into no
ondisabled {System.out.println ("Call this method when the last app widget is deleted"); @Override public void OnReceive (context context, Intent Intent) {//OnReceive method of calling the parent class is not small, otherwise you cannot hear the OnUpdate event. Su
Per.onreceive (context, intent);
SYSTEM.OUT.PRINTLN ("Receive broadcast event");
@Override public void OnUpdate (context context, Ap
From: http://blog.csdn.net/android_tutor/article/details/5853143
In Android, The webview control can be used to call the pages to be loaded and Android methods. We need to implement the addjavascriptinterface method in webview so that HTML can call the android method, here
signatures supported in the Cocos2d-js are as follows:
Java type
Signature
Int
I
Float
F
Boolean
Z
String
Ljava/lang/String;
ParametersThe parameters can be 0 or any number. You can directly use number, bool, and string in js.ExampleWe will call the static method in the Test class above:// Call
will explore the custom appcliation. As simple as creating a custom application class, there is a system for creating the Application object. Below we add a counter to the custom application.Import android.app.Application;public class CustomApplication extends application{private int counter = 0;public int Getcounter () {return ++counter;}}All components of the app can be application objects, and are the only one. As seen from the running results, th
service.In fact, the Android mechanism determines that the user can not completely exit the application, when your application is not used for the longest time, Android itself will decide to shut down the application.4. Restartpackage MethodActivitymanager manager = (Activitymanager) getsystemservice (Context.activity_service);Manager.restartpackage (Getpackagename ());You first need to create a Activityma
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This article mainly summarizes the simple method of invoking Android and JS to each other.
In the development process encountered the need to call the JS method in wirelessly needs, so the specific implementation process is always formed this blog.
Effect:
Where the "call the
Customize a pretty practical lock screen app, if you can win the user's approval, replace the system with the lock screen, is definitely a small day live entrance. This time is just a summary of the difficulties in the recent research on the Android platform's lock-screen app development.
First, the preface
The general principle of the lock screen is very simpl
this object. This object can also call the method in JS.
webView.addJavascriptInterface(new Contact(), "contact");
The complete sample code is as follows:
:
MainActivity:
Import android. app. activity; import android. content. intent; import android.net. uri; import android
responsible for installing the system application:
The zygote process starts in the Android system during the boot process . Systemserver Components , The systemserver component starts the packagemanagerservice service, Activitymanagerservice Service and so on .
Packagemanagerservice service startup process : Create a Packagemanagerservice service instance , Span style= "line-height:1.6;" > add this service to ServiceManager
to mobile devices, and users download this file onto their devices. All the code in an. apk file is considered an application.
AAPT:
AAPT is the acronym for the Android Asset Packaging tool, which is included in the tools/directory of the SDK. View, create, and update zip-compatible archive files (zip, jar, apk). It can also compile the resource file into a binary package.
Although you may not often use appt directly, the build scrip
server, and then the server has registered the AIDL on the system used by the client (that is, once installed and run ), then the client can remotely bind and call the service on the server. The specific steps are as follows: 1. first, it is Server 1) Create an android Application Project 2) create an AIDL file in the bag where the main Aitivity is located, this is an ADT that will automatically generate a
Method 1:
Many applications have a startup interface. You are welcome to gradually hide the image. There are two methods to achieve this effect (only two methods are found at the moment)1. When two activities are used, load the first Activity when the program starts, and then call tick to trigger another Activity after N seconds.2. You can use the View. gone () method to use an Activity. Removes some elements of Acitivity.
1. Two activities:First, And
finish all the activities in the stack when the program exits. This method is described in my previous articles.The essence of the first two methods is that you need to design a stack to manage the interface or Activity, so that the program is more complicated. The method in 3rd is to first let the program go to the Home interface and then kill process: the code is as follows:Java codeIntent intent = new Intent (Intent. ACTION_MAIN );Intent. addCategory (Intent. CATEGORY_HOME );Intent. setFlags
In this paper, we introduce the content of Android to Judge app state by the way of illustration, as follows:
To understand this piece, first of all need to understand some concepts, app,process,task
1.process is the process, the concept of Linux.
2. A generic app has a UID, runs in a process, and if the
to set the page to set the language type effect. After discovering that a new locale has been set for the current system, not only has its own application language changed, but all of the system's applications have changed. This must be unreasonable. Perhaps you will say, when exiting the app, the big deal again to change the language back. But in Android, the reasons for killing the
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