android touch screen tablet

Opening language: The recent program in a small effect, to use the touch, the results of the cloud inside the fog, and simply a good look at the Android touch mechanism, hehe.Each ViewGroup subclass in the Android system has the following methods that are closely related to the next three and touchevent processing:1) P

The recent news list of dropdown down the up move and so on let me very headache, inadvertently saw a very good post, reproduced as follows:Opening language: The recent program in a small effect, to use the touch, the results of the cloud inside the fog, and simply a good look at the Android touch mechanism, hehe.Each ViewGroup subclass in the

Nothing to visit the forum, inadvertently saw a very good post, reproduced as follows:Opening language: The recent program in a small effect, to use the touch, the results of the cloud inside the fog, and simply a good look at the Android touch mechanism, hehe.Each ViewGroup subclass in the Android system has the follo

Indicates whether the event is blocked and returns false to Not intercept @overridepublic boolean onintercepttouchevent (Motionevent arg0) {return false;} /** * Rewrite Ontouchevent event, nothing to do */@Overridepublic boolean ontouchevent (Motionevent arg0) {return false;}/** * Event distribution, request parent control and ancestor control to intercept event */@Overridepublic Boolean dispatchtouchevent (motionevent ev) {if (Getcurrentitem ()! = 0) {get Parent (). Requestdisallowintercepttouc

different from Onsingletapup, he is in Gesturedetector convinced that the user after the first touch of the screen, not immediately following the second touch of the screen. That is, not a "double click" trigger.Tip://distanceX。是前后两次call的X距离，不是e2与e1的水平距离； 是前后两次call的Y距离，不是e2与e1的垂直距离Usage:1: Inheritance Gesturedetector.

This article describes the implementation of Multi-Touch (Multitouch) for Android programming. Share to everyone for your reference, specific as follows: If you are interested in developing a multi-touch program, then this article will be a good start, Android application development, the multi-

Most Android devices use touch screens, but Android devices also support keyboard operations, allowing navigation, clicking, and inputting through the keyboard. When a user uses a keyboard (or trackball), it is necessary to focus on the UI elements currently accepted, for example, highlighting a button, let the user know which UI element is being operated. Howe

The previous article has already brought everybody to realize the free enlargement to reduce the picture, introduced the next matrix simply; Please refer to: Android to achieve gesture sliding multi-touch zoom translation Image effect, this article continues to improve our imageview. First add the amplification after the move. 1, free to move We are in the ontouchevent, plus the moving code, of course, m

---restore content starts---1.Touch Event Delivery mechanismThe procedure is somewhat similar to the stack, and the subclass of ViewGroup has the following 3 methods that inherit it:public boolean dispatchtouchevent (Motionevent event); Message distribution, which is equivalent to calling other functions in one functionpublic boolean onintercepttouchevent (Motionevent event); Intercept messagespublic boolean ontouchevent (Motionevent event);

, it can be nested in a ScrollView , so that a scrollable layout can be obtained and handled by Framewok.Implementing a custom scroller should only be required in some special cases.Scroller is used to create scrolling animations over time, using platform-standard scrolling physical parameters (friction, speed, etc.).Scroller himself does not actually draw anything.Scroller records the offset values for scrolling, but it does not apply these locations to your view and you need to do it yourself.

Opening language: The recent program in a small effect, to use the touch, the results of the cloud inside the fog, and simply a good look at the Android touch mechanism, hehe.Each ViewGroup subclass in the Android system has the following methods that are closely related to the next three and touchevent processing:1) P

Gesturedetector convinced that the user after the first touch of the screen, not immediately following the second touch screen, that is, not "double-click" When the triggerTip://distanceX，是前后两次call的X距离，不是e2与e1的水平距离； 是前后两次call的Y距离，不是e2与e1的垂直距离How to use:1: Inheritance Gesturedetector.ongesturelistener2: Instantiation D

The previous article layer describes the transfer mechanism for Android Touch events (Motionevent) from the framework layer. This article will detail some of the members and methods of Motionevent. Understand that Motionevent has a great effect on developing some effects, such as dragging controls or multipoint scaling controls. At the same time, mastering the Motionevent class is also the foundation of lea

two sentences (including the above __set_bit (Ev_abs, input_dev->evbit) are optional, because the corresponding settings are made in the Input_set_abs_params function.And this sentence __set_bit (Input_prop_direct, Input_dev->propbit), but also must have, otherwise there will be a small white ring in Android, it feels like the lack of IDC files. Finally, through the getevent-p command to see the touch

Reprint Please specify source: http://blog.csdn.net/guolin_blog/article/details/11100327In the previous article I took everyone together to achieve the effect of the image wall of the Android waterfall, although the effect is very cool, but in fact, it can only be considered a semi-finished, because all the pictures in the photo wall can only be seen can not point. Therefore, in this article, we will be able to perfect this function, add click on the

I wrote it some time ago and I will share it for your reference. I have studied the source code of the image library, but it is too complicated for me to understand! I have also referred to some source code on the Internet, but many functions are incomplete. They are not what I want! I wrote a Class Based on the online code and some source code of the Image Library. Unimplemented functions-step-by-step amplification, this matrix transformation will make me dizzy, and the project will not be used

Android devices run on a variety of screens that have different screen sizes (screen sizes) and screen densities (display density). Screen sizes represents the actual physical size of the screens, such as 5-inch mobile phones, 7-inch tablets, and 8-inch tablets.

Recently, I often hear from Members that the Android mobile phones, such as Motorola milestones, do not respond to touch and screen failures. In this case, do not panic. In fact, this phenomenon is normal on the touch screen mobile phones. This requires us to pay more attent

Differences between Android touch events and click events 6I want to add this article to my favorites for 12 months ago (). 4811Total times of reading 5Comments For a view control on the screen, how does Android differentiate whether an ontouchevent, onclick, or onlongclick event should be triggered? In

When I first started learning Android, I felt that Google's documents were not good, and when we studied gestures, I felt that Google's documents were too poor. A lot of constants, properties, and methods don't even have a description.There is no description, but there are so many gestures in ongesturelistener, it does not have a description, who can understand onlongpress and onshowpress before they try.Is there a difference between onscroll and onfl