pinch to zoom android

Android custom View-like Ctrip homepage click zoom ImageView I recently launched a Ctrip App. I clicked on the home page and noticed that when I clicked the button, it wasn't the color-changing effect we often saw. Instead, I first contracted it. When I opened it, back to the original size, I felt that this effect was small, but it was very novel. So I decided to imitate this small effect and first look at

Reprint please indicate source: http://blog.csdn.net/lmj623565791/article/details/39480503, this article from: "Zhang Hongyang's Blog"The previous article has been taken to achieve the freedom of zooming in and out of the picture, a brief introduction of the next matrix; for details, please refer to: Android gesture detection to create a picture preview that supports zoom panning (top); This article continu

In the Android UI development often encounter the image of the zoom, such as Notepad, now the picture is relatively large, if the original image is placed directly on the screen without zooming, it will occupy the entire screen, and sometimes the picture will be larger than the screen, then can not fully display the entire picture, so, it must be scaled, But in the scaling, how to

The article will be based on the original foundation to do some extended functions: 1. Inertial sliding of pictures2. Picture scaling is less than the normal ratio, let go will automatically rebound into normal proportions3. Picture shrink enlarge in the maximum proportion, let go will automatically rebound into the maximum proportion To achieve the image zoom, pan, double-click the basic functions such as scaling code as follows, each line of cod

Reprint please indicate the source:http://blog.csdn.net/hanhailong726188/article/details/46717621This article is from "Dragon's Blog" Previously reproduced Android WebView related articles, Android WebView development issues and optimization summary, here to explain the implementation of webview scaling and hide the zoom control bar encountered problems and

Perfect solution for Android WebView text box to get focus after auto zoom problemA few days ago when writing a project, a webview was required to embed in the projectIt was done soon, and the test was no problem. But when they were sent to Singapore, they would have a text box focus when they tested it, and the page would zoom in (they tested it with a Samsung p

Drag/drop and zoom of Android Images May 9, 2014 We often need to browse images when using applications. For example, you can click an image to scale the image. This blog introduces how to drag and scale images. First, you need to understand the touch mechanism in Android. On the screen, there are finger-pressing, finger-lifting, finger-moving, and multiple finge

Tagged with: Android platform WebView Samsung AdapterA few days ago when writing a project, a webview was required to embed in the projectIt was done soon, and the test was no problem. But when they were sent to Singapore, they would have a text box focus when they tested it, and the page would zoom in (they tested it with a Samsung phone).On the internet for a long time reference his method plus to test ht

) {moveddistancey = 0;} else if (height-totaltranslatey + moveddistancey > currentbitmapheight) {moveddistancey = 0;}//Call the OnDraw () method to draw a picture invalidate (); Lastxmove = Xmove; Lastymove = Ymove; If Else if (event.getpointercount () = = 2) {//two fingers are moved on the screen, the Zoom State centerpointbetweenfingers (event); Double Fingerdis = Dis Tancebetweenfingers (event); if (Fingerdis > Lastfingerdis) {currentstatus = Statu

I. OverviewThe Scalegesturedetector class is designed to detect two finger gestures for zooming on the screen, and the simplest application is to scale the image or zoom the page.Second, the requirementsUse the Scalegesturedetector class to achieve picture scaling.Third, the realizationNew Project Myscale, modify the Main.xml file, add a button and a surfaceview in it, as follows:1XML version= "1.0" encoding= "Utf-8"?>2LinearLayoutXmlns:android= "Http

Android Zoom Animation Core methodpublicvoidstartAnimation(Animation animation) Run animation, the number of parameters can be a variety of animation objects, animation polymorphism. It can also be a combination animation, which will be available later. 4 Number of parameters construction method/** * Constructor toUse when building a scaleanimation fromCode * * @param FromX Horizontal Scaling

The example of this article for everyone to share the Android gesture Control Zoom, move the image of the method for your reference, the specific contents are as follows Create a new touch listener class Package com.liyong.btprinter; Import Android.graphics.Matrix; Import Android.graphics.PointF; Import Android.util.FloatMath; Import android.view.MotionEvent; Import Android.view.View; Import And

Android webview provides us with many convenient interfaces and methods. It is also so convenient when using its zoom-in and zoom-out functions, however, when using the webview control, it is easy to form an operational conflict with the content in the webview control. In the end, you can use the online data search function to

=latlngbounds.builder (). Include (RIGHTLATLNG). Include (LEFTLATLNG). build ();//bounds.contains () ; G_amap.getmapscreenmarkers ();//Adjust visual range //amap.movecamera (Cameraupdatefactory.newlatlngbounds ( Latlngbounds.builder (). Include (RIGHTLATLNG). Include (LEFTLATLNG). Build (), 10)); }} Code snippet, click on the area to display the points on the area LATLNG latlng = Marker.getposition ();//zoom level FLOAT

For several days did not write a blog, feel a little slack. The author participated in the second Software design contest for college students, these daysI've been working on the big game and didn't spend a lot of time organizing blogs. Fortunately, after a few days, the game has been pretty much the same.The next step is to take this time to learn something useful to do some summary.What you do today is the area clipping function that implements the image. Due to the need of the project functio

Android Bitmap Related actionsSeveral common operations: zoom, crop, rotate, offsetMany operations require the matrix to support the matrix, which processes the bitmap and calculates the location of each pixel to display the bitmap.There is a 3x3 matrix in the matrix for image processing:mscale_x mskew_x mtrans_xmskew_y mscale_y mtrans_ympersp_0 mpersp_1 mpersp_2The specific purpose can be guessed accordi

Developed on Android. We often use zoom animations, and there are two ways to scale animations in normal situations. One is directly through the Java code to implement, the second is to implement the animation through the configuration file, the following is the basic use of the two animations:Java Code Implementation:Create a scaled animation object animation animation = new Scaleanimation (0, 1.0f, 0f, 1.

The Android platform offers two types of animations. One is the tween animation, that is, the object in the scene constantly changing the image to produce animation effects (rotation, translation, indentation and gradient).The second type is frame animation, that is, the sequential playback of the pre-made image, and GIF image principle similar.Let's talk about the Tweene animations.Main classes:Animation AnimationAlphaanimation Gradient Transparency

);Outputstreamoriginal. Close();FileOutputStream outputstreamcut = new FileOutputStream (Environment. getExternalStorageDirectory(). toString()+"/photocut.jpg");Rectbitmap. Compress(Bitmap. Compressformat. JPEG, -, Outputstreamcut);Outputstreamcut. Close();Log. D(TAG,"Picture saved!");} catch (Exception e) {E. Printstacktrace();} } };The permissions you need: uses-permission android:name="Android.permission.SYSTEM_ALERT_WINDOW" /> uses-permission android:name="Android.permission

An android gesture to zoom a picture of the tool class, and this class also implements another function: when the finger presses on the touch screen to move, the picture "sticky" moves on the finger with the finger movement and the whole movement.The method can be used as follows: First a new instance of this class, and then the ImageView method Setontouchlistener (New Imageviewonmultitouchlistener ());For