clickable infographic

the upper layer no longer responds to the event, but if it is false, he should have executed all of them? Then run the command on the upper layer? After reading the source code, the onTouchEvent in the view Source Code has an int-type flag. Before the action is triggered, the onTouchEvent will be judged, but the method will be rewritten by itself... I think it's strange .. Think about it .. There are many principles here .. 1 public boolean onTouchEvent(MotionEvent event) { 2 final int

trouble, you can directly through the online source code, address is: http://grepcode.com/Direct Search android can be online to view all versions of Android source code and can be compared, however, I personally prefer to view local code through IDE. 1. Click Event-related source code tracking 1. From the example in the previous article, we can see that only one method is called, namely view. setOnClickListener. Here we will start to View it from the setOnClickListener method of the view class

) . Ui-helper-clearfix:Applies float wrappingproperties to parent elements . Ui-helper-zfix:Applies iframe "fix" css toiframe elements when needed in overlays. Widget Containers (control container) . Ui-widget:Class to be applied on outercontainer of all widgets. applies font family and font size towidget. also applies same family and 1em font size to child formelements specifically, to combat inheritance issues in Winbrowsers. (container, mainly set the font and font size) . Ui-widget-header:

consume move or up events?A: The sequence of events that this event belongs to disappears, and the parent view does not handle it, and eventually it is addressed to the activity.16.ViewGroup Default intercept event?A: The default does not intercept any events, Onintercepttouchevent returns false.17. Once an event is passed to View,view, will the ontouchevent be called?A: Yes, because the view itself does not have a onintercepttouchevent method, so as long as the event comes to view here will ce

Import Java. AWT .*; Import Java. AWT. event .*; Import Javax. Swing .*; Public Class Calculator Implements Actionlistener {Jframe JF = New Jframe ("Calculator by chenyadong ");Jtextfield TF = New Jtextfield (); // Area of the input number Double Data; // Records the data before the input symbol. String operator; // Symbol bit Boolean Clickable = True , Clear = True ; // Clickable is used to dete

\ btn_sbicon_back.xmlFrameworks \ base \ core \ res \ drawable \ btn_sbicon_home.xmlFrameworks \ base \ core \ res \ drawable \ btn_sbicon_menu.xmlFrameworks \ base \ core \ res \ drawable \ btn_sbicon_vol_down.xmlFrameworks \ base \ core \ res \ drawable \ btn_sbicon_vol_up.xmlThe base structure is as follows: 2. Add an iconChange the overall status bar by using the following methods:Modify the layerout file of the status bar:Frameworks/base/CORE/RES/layout/status_bar.xmlAdd an image view in t

determine that when the horizontal movement distance can be determined to be greater than the smallest moving distance, at this time, we intercept the event of VIewGroup downstream distribution. At this time, the event will be consumed by the onTouchEvent of ViewGroup. We will process the slide of the read image in onTouchEvent. In this Demo, we should note that our layout file is as follows:

null3, (Mviewflags enabled_mask) = = ENABLED, is to determine whether the currently clicked control is Enable, button defaults to enable, this condition is also constant to true,4, the focus is, Li.mOnTouchListener.onTouch (this, event) is back to control the Ontouch method, when this condition is true, result=true, Ontouchevent (event) will not be executed. If Ontouch returns False, the Ontouchevent (event) method is executed again.We then go into the Ontouchevent method to view the source co

To prevent a button from being clicked by the user or by testing mm, write a method to prevent a continuous click of the buttons. The concrete instance code looks like this: public class Baseactivity extends activity {protected Boolean Isdestroy; The flag to prevent repeated clicks is set to False when clicking on other activity, set to True private Boolean clickable=true in the Onresume event; @Override protected void OnCreate (Bundle savedi

Angle Number The rotation angle of the point marker supports IE9 and above versions Autorotation Boolean Whether to rotate automatically. Point mark when using Movealong animation, if the path direction changes, the point marker automatically adjusts the angle, the default FALSE,IE8 the following does not support Animation String The animation effect of the dot marker, default value: "Amap_animation_none". Optional value: "Amap_animati

= true; 14.: What will be the result of a view that does not consume down events when handling events? A: If a view, when the down event comes, his ontouchevent returns false, then the sequence of events that the down event belongs to is that his subsequent move and up will not be dealt with by him, all to his parent view. 15. What happens if the view does not consume move or up events? A: The sequence of events that this event belongs to disappears, and the parent view will not be dea

Ontouchlistener method,And we return true, so the IF condition evaluates to True, then the following statement is not executed.if (Ontouchevent (event)) { return true; }Let's look at the logic of the Ontouchevent method: The source code is as follows: public boolean ontouchevent (Motionevent event) {final int viewflags = mviewflags; if ((ViewFlags enabled_mask) = = DISABLED) {if (event.getaction () = = Motionevent.action_up (mP Rivateflags PRESSED)! =

respect for the original:http://blog.csdn.net/yuanzeyao/article/details/38942135About the Android Touch event delivery mechanism I have written two articles before, I think I understand the Touche incident is quite clear, but recently encountered a problem, let me once again on the Android Touche event to learn.My article about the Android Touche event delivery mechanism is as follows:http://blog.csdn.net/yuanzeyao/article/details/37961997http://blog.csdn.net/yuanzeyao/article/details/38025165I

respect for the original:http://blog.csdn.net/yuanzeyao/article/details/38942135About the Android Touch event delivery mechanism I have written two articles before, conscious of the Touche incident or understand clearly, but recently encountered a problem, let me once again on the Android Touche event to learn.My article about the Android Touche event delivery mechanism is as follows:http://blog.csdn.net/yuanzeyao/article/details/37961997http://blog.csdn.net/yuanzeyao/article/details/38025165I h

processing. ViewGroup does not intercept any time by default view has no Onintercepttouchevent method, and once a click event is passed to it, its Ontouchevent method is called The ontouchevent of view consumes the event (returns True) by default, unless it is not clickable (clickable and clickable are also false). The Enable

consistent The product page should contain links of similar or complementary products with the current product to achieve cross-Marketing The terms in navigation items and links should be unambiguous and use the terms Users can sort and filter directory pages (for example, sort by price or the most popular) When the mouse is placed on a clickable element, the element should change significantly (including changes in the cursor) Importan

When analyzing the focus and touch event processing code, I found that some attributes have a very important impact on the Code logic, such as clickable and focusable. These attributes. What are the default values of these attributes? I have the same questions many times at work. I was not It is clear that the settings are basically set manually in XML. There are still many people like me. Today I will tell you how to quickly view these default values

distribution mechanism, because some online friends have already made it very clear. See the link at the beginning of the article. Let's take a look at row 17th. Because we didn't implement the OnTouchListener interface, and the default return value of the onTouch () method is false, the code in the first if statement will not be executed, in the second if statement, the onTouchEvent () method is executed. Then let's take a look at this method: public boolean onTouchEvent(MotionEvent event) {

the clickable area of the icon do not necessarily match.In other words, the icon can be done very small, but in order to ensure the accuracy and smoothness of the click, the engineer can set the clickable area is very large, such labeling and transduction time to note that the size of the clickable area, Cetucci is also the size of the

the default 100 Angle Number The rotation angle of the point marker supports IE9 and above versions Autorotation Boolean Whether to rotate automatically. Point mark when using Movealong animation, if the path direction changes, the point marker automatically adjusts the angle, the default FALSE,IE8 the following does not support Animation String The animation effect of the dot marker, default value: "Amap_animation_none". Optional valu