view webcam on android

View layout and Drawing Mechanism in Android To study the layout and Drawing Mechanism of the View in Android, I created a very simple App with only one Activity. The layout corresponding to the Activity is as follows: The layout file is very simple. There is a TextView under RelativeLayout. After the Ap

-degree start layout, then the 36-degree integer of the more out part of the angle //Below is what we do buffer angle processing, if the more out part of the angle than the picture separated by half of the angle forward into one, if less than to back one. if (angledelay/2 > Angle) { mstartangle = angle; } else if (angledelay/2 As for the other small method details, the visible source code, has the detailed explanation. Source Code Portal: GitHub Address:

Typically, if we want to use the SIM card Dial-up feature, we need to do a simple configuration in the setup, steps are as follows： Settings-"Wireless and network-" mobile network-(enabled data/data roaming/access point name/2G network/network operator only) We have to select the "Enabled Data" option, and then configure the access point name can be used after the Internet, of course, some settings have been based on your SIM card type default set up the access point, this time you only select "

A lot of Android Getting Started program apes may be more fearful about Android custom view, but this is the only way to get to the master's level, all ready to spend some time on custom view and write more articles. Thinking Analysis: 1, custom View implementation of the

That's how Android is measured , but a pretty control I just know where you are and that's not going to work. Simply rewrite the OnDraw method and invoke the colorful brush on the canvas (Canvas) object to draw the "sexy" appearance of the control. So how does the view draw? To understand how the view is drawn, you need to know what the canvas (canvas) is? What

View Convert to Bitmap Android often encounters situations where a view is converted to bitmap, such as screenshots of the entire screen view and the creation of a picture; in Coverflow, you need to convert one page view to bitmap to achieve complex graphical effects (shado

1. First, let's take a look at the structural diagram of the launcher activity view (obtained by hierarchyviewer. BAT ): 2. Let's take a look at layout/launcher. XML, layout-Port/launcher. XML, and layout-land/launcher. xml. Xmlns: Android = "http://schemas.android.com/apk/res/android" Xmlns: launcher = "http://schemas.android.com/apk/res/com.android.Launche

Android Custom View Constructor Custom view is a common requirement in Android, and each custom view needs to implement three basic constructors, and these three constructors have two common ways of writing. First Kind Each constructor calls the constructor of the base cl

call invalidate(); can refresh the control, redraw to achieve sliding effect. @Override Public Boolean ontouchevent (Motionevent event) { //If you can display all the data without sliding, do not let slip if (interval*x_coord _values.size () Finally, add a method to set up the data source, set x_coords , x_coord_values This two List collection, after the setup is complete, call invalidate() to refresh the control: /** * Set coordinate line chart value * @param

The HelloWorld example of the Android RoboGuice2 is described earlier, and the main considerations for upgrading from Roboguice 1.1 to RoboGuice2.0 are described. This example describes how to inject custom View,inject view and Android's own view (such as Textview,button) method. This example uses a custom TextView t

Source code analysis of the View rendering mechanism in Android I haven't written a blog for almost half a year. I think my work is busy, I think there is nothing worth writing, and I think I am getting lazy, however, I recently have some new ideas about the View rendering mechanism in Android, so I want to record it

Basics of learning Android from 0 (3)-layout manager of view ComponentsAndroid layout managerAndroid ActivityThe component binds the display interface for the activity through setContentView (xml resId, however, in order to better manage the various controls in the user interface of the Android Application (a series of components such as button text box editing a

In the previous Android ultra-precision pedometer development-dylan step of the home page to use a custom control, and the QQ movement of the interface is a bit similar, and animation effect, the following is to tell how this view is drawn. 1. See the effect chart first 2. Effect Chart Analysis Function Description: Yellow on behalf of the user set the total plan of exercise steps, red on behalf of the

Brief introduction Android animation mainly includes view animation and property animation, view animation includes tween animation and frame animation, tween animation includes gradient animation, translation animation, scaling animation, rotating animation. Basic properties of Tween animation Target View; often d

(linearlayout.vertical); @Override public void Computescroll () {iF (mview!= null mscrollview!= null viewswitchlistener!= null) {int y = mscrollview.getscrolly () ; if (isflag) {int top = Mview.gettop (); if (y >= top) {viewswitchlistener.onviewshow (); Isflag = false; } if (!isflag) {int bottom = Mview.getbottom (); if (y Use effects in projects: The above is a small set to introduce the Android imitation Taobao

Android View rendering and practicesOverview The drawing process of the entire View tree is expanded in the javasmtraversals () function of the ViewRoot. java class. The execution process of this function is as follows:-Determine whether to recalculate the View Size (measure)-Layout)-Determine whether redrawing is requ

This article illustrates the method of dynamically adding view and realizing pseudo infinite loops in Android Viewpager. Share to everyone for your reference, specific as follows: The use of Viewpager, we are familiar with, it can achieve sliding between the left and right, there is a demand, that is, the number of pages loaded in Viewpager is not determined, but based on the amount of data to determine. A

multiple times /private void GetSize1 () { Viewtreeobserver vto = Tvtest.getviewtreeobserver (); Vto.addonpredrawlistener (New Viewtreeobserver.onpredrawlistener () { @Override public boolean Onpredraw () { int height = tvtest.getmeasuredheight (); int width = tvtest.getmeasuredwidth (); System.out.println ("height" + height); System.out.println ("width" + width); return true;}} ); The Third Way: private vo

In Eclipse Android, how to view the source code of each version is introduced in this article, mainly to understand and learn about Eclipse Android content. For details about Eclipse Android, see this article. Let's take a look at this article: the Eclipse Android project is

(); if (0 = touchcount) {//Long click Islongclick = true; else {msg.arg1 = Touchcount; Mtoucheventhandler.sendmessage (msg); Touchcount = 0; }} public class Toucheventhandler extends Handler {@Override public void Handlemessage (msg) {Toast.maketext (Mcontext, "touch" + Msg.arg1 + "time.", Toast.length_short). Show (); Class Mythread extends Thread {@Override public void run () {super.run (); while (Mnotdestroy) {if (Mstartchange) {postinvalidate ();