discovery mode android

. Note:Although this activity is started in a new task, it is still returned to the previous activity when the return button is pressed. "Singleinstance" The mode is the same as that of "singletask", except that the system does not start any activity in the task that owns this instance. This activity is always independent and the only member of its task. Any activity started through this activity is opened in an independent task. For example, the

the screen * /Public int getscreenheight () {Display display = ((WindowManager)context. Getsystemservice (context. Window_service)). Getdefaultdisplay ();return display.getheight ();}}Front-end invocation: Public class Singletonactivity extends Activity { private static String TAG = "Singletonactivity";@Override protected void onCreate (bundlesavedinstancestate) {Super. OnCreate (savedinstancestate);Setcontentview (r.layout. Activity_singleton);int screenwidth = phoneutil. getinstance (

", username) ; Set the requested parameter name and the number of Params.put ("Userpass", userpass);//Set the requested name and the number of parameters//When sending a GET request, the URL address corresponding to the parameter, the anonymous callback object Client.get (URL, params, New Asynchttpresponsehandler () {@Overridepublic void onsuccess (int statusCode, header[] headers,byte[] responsebody) {/ /Successful processing Method System.out.println ("StatusCode-------------------" + STATUSC

"android:layout_height="wrap_content" /> linearlayout>Androidmanifest.xml Configuring the Networkmanifest xmlns:android="Http://schemas.android.com/apk/res/android" package ="Custom.community.com.filedemo"> applicationandroid:allowbackup="true"android:icon="@mipmap/ Ic_launcher "android:label=" @string/app_name "android:supportsrtl=" True "android:theme=" @style/apptheme ">

use of the Internet to store the data we want, this is the CS structure storage mode, but also a point of name. How to use the Content Provider Below are several typical content provider applications that users often encounter: * Content Provider name:intended Data * browser:browser bookmarks, Browser history, etc. * Calllog:missed calls, call Datails, etc. * Contacts:contact Details * mediastore:media files such as audio, video and Images

There are unwritten rules in the industry that phone companies must have a prompt when they click the photo and video keys for camera. Therefore, google also put the function of playing the photo sound in the cameraService to prevent developers from developing a non-audible camera. Therefore, as long as the camera function is called, it will surely sound, this is written to the framework. This rule is a bit out of date today. This is not the case. Today I received a BUG mentioned in the test, s

There are unwritten rules in the industry that phone companies must have a prompt when they click the photo and video keys for camera. Therefore, google also put the function of playing the photo sound in the cameraService to prevent developers from developing a non-audible camera. Therefore, as long as the camera function is called, it will surely sound, this is written to the framework.This rule is a bit out of date today. This is not the case. Today I received a BUG mentioned in the test, say

**************************************** **************************************** **************************************** ***Author: EasyWave time: 2013.02.16 Category: Android source code analysis statement: reprinted. Please keep the link NOTE: If any error occurs, please correct it. These are my Learning Log articles ...... **************************************** **************************************** **************************************** **

memory. Enhance the performance of the program.(2) Use the enjoy meta-mode to enable the enjoyment of Meta objects to be shared in different environments.2. Disadvantages(1) Make the system more complex. In order for the object to be shared, some States need to be externally instantiated. This complicates the logic of the program.(2) The enjoy meta-mode will be the need, the enjoyment of the state of the m

Android Access Data mode: File, sharedpreferences, SQLite database, Content providerFile stream: Use Java IO Stream to read and write files, file permissions default. specify file permissions to write: Mode: File permissions mode_private files are private to the application, mode_world_readable are accessible to all applications, mode_worl

notified through the Getcontentresolver (). Notifychange () method.The registration and notification here is obviously not in a process, for example, in a application through the CONTENTRESOLVER registered observer, in the B application through the Contentresolver notify the Observer, The contentresolver here is not a Contentresolver object in a, and is not able to be notified by a direct call. This is actually the event registration and notification through inter-process calls. The registratio

Ubiquitous design Patterns in Android development--the ubiquitous design pattern--builder pattern in the single case model Android development The previous introduction of the single case mode and builder mode, interested in see the above two links, this article focuses on the Observer model. Let's look at the definiti

. Note If you attempt to start an activity from a non-activity, such as starting an activity from a service, intent for example to add a flag_activity_new_task tag.Flag_activity_no_history: For example, now the stack condition is: A B C. C Jump to D through intent, this intent add flag_activity_no_history flag, then the interface displays the contents of D, but it does not press into the stack. If you press the back key, return to C, the case of the stack is: A B C. If you jump to E in D at this