Android study note 26. Cross-process call Service (AIDL Service) and androidaidlCross-process call Service (AIDL Service) I. AIDL Service1. What is AIDL Service?AIDL, that is, Android Interface Definition Language. android is used to define remote interfaces. the syntax of t
This article implements the Android system camera call to take photos
The layout of the project is fairly simple, with only one button:
First open the list file under the Packages\apps\camera folder and find the following code:
The relevant code is as follows:
public class Mainactivity extends activity {
@Override
protected vo
C # How programmers learn Android Development Series and call WebService
The first question I encountered when learning about Android development is how the Android client interacts with the server database? This is a big problem that plagued me when I first came into contact with
loadlibrary to require the VM to load the so file. The Java code is generally in the following form:
public class jnitest { static { System.loadLibrary("jnitest"); } //...}
When the above Code is run, libjnitest will be searched in the/system/lib/directory. so file, will be loaded into the VM, so that the Java code and the C component constitute a connection, then you can use some methods to call each other.3 jni_onload and jni_onunl
Android uses SOAP to call the remote WebService and androidwebservice
In today's applications, the network cannot be used, and the backend must be supported by servers. Currently, the most common call methods are http get and POST methods, which return JSON or XML data. However, there is also a common form of calling WebService. Now we can
The previous article mainly explains how to call java functions in js.
Address: http://www.bkjia.com/kf/201205/132839.html
This article uses js and java to call each other to solve the relationship between each other.
First, describe the important code:
Key code in android:
Webview. getSettings (). setJavaScriptEnabled (true );
Webview. addJavascriptInterface (o
a running service. The Service obtains the intent using the onBind () method. If the service is not started, bindService () can choose whether to start the service. For example, an activity may want to establish communication with the background music playing service.
In this way, you can use activity to control background playback. Therefore, the activity may call the bindService () method to establish a connection, and then
C # programmers learn how to call WebService In the Android development series,
The first question I encountered when learning about Android development is how the Android client interacts with the server database? This is a big problem that plagued me when I first came into contact with
Recently learned the development of cross-platform audio and video communications under the Android platform, although there are many open source projects available on the Internet for our participation. But the audio and video effect is very general, there are a lot of unstable factors, after all, is open source. In China I found a better audio and video communication solution (Baidu download official anychat for
Invoking Service (aidl service) across processesFirst, Aidl Service1. What is Aidl Service?Aidl, that is, Android Interface definition Language. Is Android used to define the remote interface, the syntax of the Aidl interface definition language is relatively simple, the interface definition language is not a real programming language, it is just Defines a communication interface between two processes . Th
here's the storage format for a call record, ending with Begin:vcall start End:vcall. Represents the meaning of the field, but is not imported into the actual file to make it understandable. So let's see how we actually export it.
2. Query Call record list
Ok.. Now that you're saving your call logs, you first need t
Share a Resting tool for Android and java to call RESTful Web ServicesShare a Resting tool for Android and java to call RESTful Web Services
When we call a Web service, the ultimate goal is to get an HTTP Response and convert it into a value object that will be presented in
The first question I encountered while learning about Android development was how did the Android client interact with the server database? It was a big question I had when I first approached Android, and it was not until a few years ago that I suddenly thought WebService could do it. Let WebService act as a server-side role, complete with the server database ope
Android call setting is an application that is used to set content related to simcard, such as network and PIN, which is an AP layer. Here we will select one of the items to read from the source code until the underlying layer, and look at the approximate structure and process.
Select setting-> call setting-> additional call
Note: Most of the content in this article is reproduced from: newcj's blog, please respect others' labor achievements!
After writing"Android notification usage", We found several problems, especially setting the notification intent so that we can correctly call back the corresponding activity in the previous task that has been placed in the background like QQ or other programs, instead of creating a new ins
the process as a classification basis. Review the documentation for activity, Service, and intentreceiver to see how each component contributes throughout the life cycle of the process. Each classes document describes in detail their role in the life cycle of their respective applications.The context of 7:application1, it describes the information of an application environment, that is, the context.2. The class is an abstract class, and Android provi
Part 1: Process of sending AT commands from Java.Outbound call process:1. Android: Process = "android. process. acore" in androidmanifest. xml of contacts indicates that the application is running in the acore process.The action attribute of intent-filter of dialtactsactivity is set to main, and the catelog attribute is set to launcher. Therefore, this activity c
ContentProvider of the Call System for Android development-SMS acquisition and backupPatience and persistence are painful, but gradually bring you benefits.After sticking to one thing for a while, we may have a lot of abandonment thoughts in our mind. Maybe after several years of giving up, we will wonder what will happen if we stick to it ..., but unfortunately, we didn't stick to it. Recently, I am too la
requestHttpput = new httpput ("http://www.store.com/product/1234 ");// Put the assembled data in httpentity and send it to the serverFinal list datalist = new arraylist ();Datalist. Add (New basicnamevaluepair ("price", "11.99 "));Httpentity entity = new urlencodedformentity (datalist, "UTF-8 ");Httpput. setentity (entity );// Send a put request to the server and obtain the results returned by the server. The modification may be successful or fail.Ht
How Android phones set up call forwarding
1. First in the mobile phone's "program list" to find and click the "Settings" icon.
2. Click "Call settings" → "Call forwarding" in the Open Settings window.
3. In the Open "Call For
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