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To end Activity_a as an example in Activity_b:1. Define a acitivity global static variable in activity_a:1 Public Static2. Assign a value to Activity_a in the OnCreate () method of activity_a:1 acta=this;3. In Activity_b, when you need to end activity_a, call the following:1It can also be implemented in a broadcast way (ignored here, you need to try it yourself)Reference Original: http://jingyan.baidu.com/article/3c343ff7096ce40d36796375.html"Android
By calling the finish () method, you can close an activity or call the finishactivity () method to close the independent activity that was previously started.
Note: In most cases, you should not use these methods to close an activity. In the subsequent discussions about the activity lifecycle, you will understand that
1. Activity IntroductionAcitivity is very important in Android development, like JFrame in Java Desktop Development, a controller in the MVC model, typically an application consisting of activities of multiple loosely coupled relationships, An activity is an application component that controls a view that the user can use to interact. Typically, the
Activity is one of the four components of Android, and it is one of the most commonly used components that can be used to display a view.The official argument is that the activity is a component of an application that provides a screen to interact with the user in order to do things like making a phone call, sending an email, and looking at a map, as follows:An
Today, we have a CSDN community activity to answer questions about how to learn, understand, and develop the Android system, and learn more about Android: wi-Fi, NFC, and GPS book answers questions and understands the implementation principles of the Android Framework. Activity
Http://www.2cto.com/kf/201108/102108.html
What is the knowledge of the official API. However, since many people are not good at English, they have reproduced this article, and the translation is very good. Do not understand the activity declaration cycle, and the program framework design, it is best to take a look.Activity and Task Design AbstractActivity is the main component of Android applications.In a
Preface: There are many people in life accompany themselves through a journey of a lifetime, but some people just appear at some stage, some people are accompanied by their own for a long time. Just like elementary school, middle school, High school, university, those who once thought will have long time, when experienced the end of the world busy life, or wishful, or frustrated, and gradually those pictures only left memories. Tianya each life, can be together in the effort to cherish it, not t
activity's compaction stack and rollback operation in singleinstance mode:
SingleInstance generally applies to scenarios where only one instance of the system exists, such as the Android phone call page, where multiple calls are made using an activity.
Of course, in Android, in addition to configuring the Launchermode attribute in the androidmanifest.xml
This example describes the lifecycle of the Android activity. Share to everyone for your reference, specific as follows:
The activity class is in the Android.app package, the inheritance system is as follows:
1.java.lang.object
2.android.content.context
3.android.app.applicationcontext
4.android.app.activity
The activit
The life cycle of the experimental activity Packagecom.example.chenshuai.test;Importandroid.app.Activity;ImportAndroid.os.Bundle;ImportAndroid.util.Log;/*** Created by Chenshuai on 2016/3/16.*/ Public classAxtivity2extendsActivity {//callback Method@Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate); Setcontentview (r.layout.layoutactivity); /*System.out.println ("This is the first
1. Transfer data to an activity downActivity11Button button=(Button) Findviewbyid (r.id.button1);2Button.setonclicklistener (NewOnclicklistener () {3 4 @Override5 Public voidOnClick (View v) {6Intent intent=NewIntent ("1111111111111111111");7Intent.addcategory ("Android.intent.category.MY_CATEGORY");8Intent.putextra ("AAA", "This is a message");9Startactivityforresult (Intent, 0x11);Ten } One});Activity21 I
The examples in this article describe the mutual invocation and transfer parameters between Android activity. Share to everyone for your reference, specific as follows:
How the activity is invoked between
In the Javaweb program, calls between JSP and JSP are done through redirection, and in Android, the switch betwee
If you encounter a problem, you need to control the other acitivity in an activity for some updates. Instead of passing the handler method, you can solve it in the following ways.
1. Define the property handler in MyAPP
Package jason.com; import jason.com. masterActivity. myHandler; import android. app. application;/*** implement Application by yourself to achieve data sharing * @ author jason */public clas
In android, press the back key to return the previous activity. How can I re-call the oncreate method of the previous activity?
It is not called by default.
@ Override public void onBackPressed () {String titleStr = edittitle. getText (). toString (); String contentStr = editcontent. getText (). toString (); if (title. equals (titleStr) content. equals (conten
theme. You should pay attention to the impact of its lifecycle (lifecycle), device status (configuration) changes, and storage of running status and data, this is critical to the reliability and humanization of an application. Permissions should also be stated in the activity to use some hardware and software features of Android, which can be provided by code or manife
Content Overview
• Inheritance relationship of activity
• Context in Android• How acitivy is actually instantiated• Activity Lifecycle• Activity startup mode, task back stack, process and thread, intent. flag_activity *
• Relationship between activity, window, and view
•
Activity A and B
A. activity B that obtains data returns the activity of the data.
Click the button on A to display the selected data in the contact list of B in textview OF A using baseadapter.
1: declare the read and write permissions of Bactivity and registration address book in the main configuration file
[Html]
Copy codeThe Code is as follows:
Lt ;! --. Ind
1. Main ContentIn this section, we will continue to improve the Code on the basis of section 1.3, write the button RESPONSE event, and create an intent in the response event to start another activity.2. Video descriptionHttp://www.eyeandroid.com/thread-11210-1-1.html
3. Translation Reference
Respond to the send button-response send button
The on-click (click) event of the response button. Open the main. xml layout file and add the
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