gcm service android

Service as the four components worthy of our more attention In Android, the activity is primarily responsible for the presentation of the front page, and the service is primarily responsible for tasks that require long-term operation. For example, a music player that plays music from a service should be set up for the

The example in this article describes the solution for using toast in the Android service to display problems correctly. Share to everyone for your reference, specific as follows: In the service of simple practice, oncreate, OnStart, OnDestroy three methods are called Toast.maketext in the same way as in the activity, and the OnStart and OnDestroy methods of the

This is a very simple process. Unlike a PC, it requires a precise memory address. The so-called simplicity here is compared with that of a PC. The purpose of the Android system is not to come to me. I will come to you. Activity seems to be the eyes of an application. The user uses his fingers to tell the activity what I want. Broadcastreceiver is like an android program that accepts intents from various par

that the Android system image file System.img already contains the Hello.default module. two. Go to the Frameworks/base/services/jni directory and create a new Com_android_server_helloservice.cpp file: user-name@machine-name:~/android$ CD Frameworks/base/services/jni user-name@machine-name:~/android/frameworks/base/services/jni$ VI com_android_server_hellose

In the previous article talking about Service Manager as the path of Binder daemon of the Android interprocess communication (IPC) mechanism, this paper introduces how Service Manager becomes the daemon of binder mechanism. As a daemon, Service Manager's job is, of course, to serve the server and the client. So how doe

interaction between the caller and the service Starting the Shutdown service through Bindservice () and Unbindservice () is applicable to both the caller and the service requiring a method call or passing parameters Eight Thread Process Service Thread: is a minimum unit of

This article describes the development of the Android API SMS SMS service processing and access to the method of contact person. Share to everyone for your reference, specific as follows: The Android API supports the development of applications that can send and receive SMS messages. The Android emulator used in our d

My Android advanced tutorial ------) the intent in the onStartCommand () method of service in android is null Today, when I was maintaining a company APP, a null pointer suddenly went wrong, Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.content.Intent.getBooleanExtra(java.lang.String, boolean)' on a null object refer

1 /* Locationactivity. Java 2 * @ Author octobershiner 3 * 2011 7 24 4 * Se. Hit 5 * Use criteria to select the optimal location service to demonstrate how to locate a user and listen for location changesCode 6 * */ 7 Package Uni. location; 8 9 Import Android. App. activity; 10 Import Android. content. context; 11 Import

Android basic notes (16)-Service: startService (), stopService (), bindService (), unbindService () Supplement, android learning notes Open door First Second Third Summary Open door You can enable the Service in three cases: if you use the service directly, there i

Introduction The application component has a lifecycle--the beginning of the Android instantiation they respond to the intent until the end instance is destroyed. During this time, they are sometimes active, sometimes inactive, and sometimes visible to the user and sometimes invisible to the activity. The component lifecycle will discuss the lifecycle of activities, services, and broadcast receivers-including their possible state in the lifecycle, th

This example describes the Android alarm service Alarmmanager usage. Share to everyone for your reference, specific as follows: The corresponding alarmmanage has a Alarmmanagerservie service program, which is true to provide alarm service, it mainly maintains the application registration of various types of alarm and

, data storage) 5, Android use Vitamio to build their own universal player (5)--Play online (play cool video) 6. Android uses Vitamio to build its own universal player (6)--Play Online (playlist) 7, Android use Vitamio to build their own universal player (7)--Play Online (download video) 8, Android uses Vitamio to

In Android, the activity is mainly responsible for the presentation of the front page, the service is mainly responsible for the long-term tasks, so in our actual development, we will often encounter the communication between the work and service, We typically start a background service in an activity, start it through

How to use the remote service hidden by the reflection call system to intercept incoming calls and Android calls in a higher version of android To intercept calls from the Android system, you have to talk about an endCall () method Android provided to developers in earlier v