post the test process, directly to tell you the results of the test :When my app is in front of the foreground and can interact with the user, theonsaveinstancestate method will not be called until the above-mentioned unexpected event occurs. The rest of the time, this method will all be called, this is why? And the OnPause method is bound to be called, which gives us the idea of how to save the data?OnsaveinstancestateWell, I believe that when you
Self-learning Android notes -- data transfer case in Activity (user registration), androidactivity1. Create the program activity_main:
In the above Code, a relative layout RelativeLayout is defined. An EditText and a Button are created in the layout for entering the content and clicking the "Submit user information" Button for data transmission.2. Create the Activity
by where it is located in the activity stack, which is the last-in-first-out collection of all currently running activity.Status of 2.ActivityActive state: At the top of the stack, the visible, focused foreground activity, when it can receive user input.Paused state: visible, but not focusable. Unable to accept user input eventsStop state: When not visible. The activit
background : There have been two blog posts written about activity beforeThe life cycle of Android activity: Detailed description of the activity's entire life cycle, transitions between states, and the state of the activity that was saved when returning to the desktopTrigger timing of Onsaveinstancestate and Onrestore
Android: singleTop in Activity Startup Mode
Let's take a look at the description of singleTop Startup Mode:
There can be multiple instances, but multiple instances of the Activity cannot be superimposed. That is, if an instance of this Activity starts at the top of the stack, the OnNewIntent method will be called inste
Reproduced in: http://blog.csdn.net/byxdaz/article/details/9708491http://blog.csdn.net/q876266464/article/details/19641251The four basic components of Android are Activity,service services, content provider contents provider, broadcast receiver broadcast receiver.First, understand the four basic componentsActivity:In an application, an activity is usually a separ
Activity Transitions AnimationThe transition animations for activity are implemented by overridependingtransition (int enteranim, int exitanim).This method is added by API level 5.This method startActivity(Intent) finish() is called after or, specifying the next transition animation.The first parameter of the method: Enteranim, is the resource ID of the new activity
When a user enters. When you exit and enter your app again, your app Activity will switch between the various states of its life cycle.For example, when your activity starts for the first time. It takes the focus of the user in front of the system today. In this process, the Androi
Respect for the original: http://blog.csdn.net/yuanzeyao/article/details/38565345Recently due to the project is too large, resulting in the compilation pass (Android to an application of the number of methods seems to be limited), so has been wondering whether some of the modules can not install the APK, dynamic loading, through the Internet to find information and the help of netizens, finally realize the APK dynamic loading, There are a lot of artic
) {this. acctack = acctack;} public int getLife () {return life;} public void setLife (int life) {this. life = life;} public int getSpeed () {return speed;} public void setSpeed (int speed) {this. speed = speed;} public String toString () {return "[name =" + name + ", acctack =" + acctack + ", life =" + life + ", speed = "+ speed +"] ";}}
In addition to passing basic types, Intent can only pass Serializable or Parcelable data. To facilitate data transmission, let the ItemInfo class implement th
file defines the activity that the entire Android app contains. The default generated activity is defined as:The Android.intent.action.MAIN in the action node indicates that the activity in which it resides is the entry point for the entire application. and the category of
Onsaveinstancestate () and Onrestoreinstancestate () methods for Android activity:1. Basic role:Activity's Onsaveinstancestate () and onrestoreinstancestate () are not life cycle methods, they are not necessarily triggered, unlike life cycle methods such as onCreate (), OnPause (). Onsaveinstancestate () is called when an activity is destroyed by the system when
Remove the title bar from the Android app. Remove the title bar from the android app.
1. Implement in code
This. requestWindowFeature (Window. FEATURE_NO_TITLE); // remove the title bar. this indicates the current Activity.
This code must be added before setContentView.This.
When the app is used normally, the activity on the front end is sometimes blocked by other visible components (obstructed), which causes the current activity to enter the pause state. For example, when you open a translucent activity (for example, in the form of a dialog box), the previous
Android hides the app icon and android hides the app
In the past, I had nothing to worry about. I browsed my blog and saw the article that opened the app with a browser address,After trying as described in this article, I found that the
Achieve Android dynamic APK loading (Fragment or Activity implementation)
Recently, due to the project being too large, compilation and translation failed (Android seems to have a limit on the number of methods in an application), so I have been wondering whether to dynamically load the APK of some modules without installation, by searching for information and h
requestcallbackDownload Successful callback: onsuccess (responseinfoCallback for Progress update: Onloading (Long, Long, Boolean isuploading)Download failed callback: OnFailure (HttpException arg0, String arg1)Day06activity1. The process of developing an interface in AndroidThe interface's corresponding class in Android is activityCreate a class to inherit activity, set the layout file of the interface thr
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.