pinch to zoom android

IOS Gesture Learning (click, long Press, swipe, drag, rotate, pinch to zoom)Click UITapGestureRecognizerLong press UilongpressgesturerecognizerSwipe UiswipegesturerecognizerDragging UipangesturerecognizerRotary UirotationgesturerecognizerPinch to zoom UipinchgesturerecognizerThe detailed code is as follows:#import "ViewController.h"@interface Viewcontroller () {

1. PrincipleInstead of directly changing the video aspect ratio of the codec output, the size of the video player window is changed.2. Set WindowYou need to set the window to not exceed the screen sizeMwindow.setflags (WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS, WindowManager.LayoutParams.FLAG_LAYOUT_NO_ LIMITS);3. Surfaceview Maintain aspect ratioMsurfaceholder.setfixedsize (Mvideowidth, mvideoheight);4. Change Surface window sizeViewgroup.layoutparams layoutparams = (viewgroup.layoutpara

In a simple way, the gesture zoom-in and zoom-out function is implemented on android. Package com. example. eventtest; import java. util. arrayList; import android. OS. bundle; import android. app. activity; import android. gestur

/**bitmap Amplification Method */private static Bitmap big (Bitmap Bitmap) {Matrix matrix = new Matrix ();Matrix.postscale (1.5f,1.5f); Ratio of long and wide magnification reductionBitmap resizebmp = Bitmap.createbitmap (Bitmap,0,0,bitmap.getwidth (), Bitmap.getheight (), matrix,true);return resizebmp;}/**bitmap Reduction Method */private static Bitmap Small (Bitmap Bitmap) {Matrix matrix = new Matrix ();Matrix.postscale (0.8f,0.8f); Ratio of long and wide magnification reductionBitmap resizebm

This article introduces the Android realization ImageView picture Double click enlarge and reduce the related skill, share to everybody for everybody reference, the concrete content is as follows public class Doublescaleimageview extends ImageView implements Ontouchlistener, Ongloballayoutlistener {private Boolea n Isfirst = false; Private float doublescale;//Double click the magnified value private Matrix Mscalematrix; Private float defa

********************************************************************** Android to flip a picture ********************************************************************** Resources res = This.getcontext (). Getresources (); IMG = Bitmapfactory.decoderesource (res, R.DRAWABLE.AA); Matrix matrix = new Matrix (); Matrix.postrotate (180); /* Flip 180 degrees * /int width = img.getwidth (); int height = img.getheight (); IMG_A = Bitmap.createb

This article has launched two kinds of Android gestures to realize ImageView scale picture size method, share for everybody reference, the concrete content is as follows Method One:write the following code into Mulitpointtouchlistener.java, and then ontouchlistener your corresponding picture.For example: Imageview.setontouchlistener (New Mulitpointtouchlistener ());To change the zoom format of ImageView to

Objective This chapter continues to improve the playback of the relevant player's core functions, for subsequent expansion lay a good foundation. Series 1.Android uses Vitamio to build its own universal player (1)--ready Body I. Achievement of the goal 1.1 Brightness Control Imitate the Vplayer interface: 1.2 Voice Control Imitate the Vplayer interface: 1.3 Screen Zoom According to the follow

Today, I wrote a method to handle the ondoubletap event. Double-click the program to zoom in and out the screen event, double-click the screen image to zoom in, and then double-click the screen image to zoom in to the original effect. See the results! Source image: double-click the screen to enlarge the effect: Paste the code below: I. Code in mainactivty. Java

Today, I wrote a method to handle the onDoubleTap event. Double-click the program to zoom in and out the screen event, double-click the screen image to zoom in, and then double-click the screen image to zoom in to the original effect. See the results! Source image: double-click the screen to enlarge the effect: Paste the code below: I. Code in MainActivty. jav

Get the multi-Touch point core code:Get the number and position of touch pointspublic boolean OnTouch (View V, motionevent event) {switch (event. Getaction()) {case Motionevent. ACTION_down:system. out. println("Down"); Break;Case Motionevent. ACTION_up:system. out. println("Number of touch points:"+event. Getpointercount());System. out. println(String. Format("x1:%f y1:%f x2:%f y2:%f", event. GetX(0), Event. GetY(0), Event. GetX(1), Event. GetY(1)));System. out. println("Up"

Package org. example. Touch; Import Android. App. activity;Import Android. Graphics. Bitmap;Import Android. Graphics. bitmapfactory;Import Android. Graphics. matrix;Import Android. Graphics. pointf;Import Android. Hardware. sensor

The zoomcontrols control is a zoomcontrols control that can be scaled but has the following effect: The following are some of the main methods Hasfocus (): determines the focus Hide (): Hide Ontouchevent (motionevent event): Now this method is used to handle touch screen mobile events. Setiszoominenabled (Boolean isenabled): whether to allow Amplification Setiszoomoutenabled (Boolean isenabled): whether to allow downgrading Setonzoominclicklistener (view. onclicklistener listener): registers a l

custom imageview control. The usage will be posted in the following code. Import android. content. context; import android. graphics. bitmap; import android. graphics. matrix; import android. util. attributeset; import android. util. floatmath; import

Custom implementation of the Android Baidu Map zoom icon, you need to customize a zoom control, the effect is as follows:The zoom effect here enables the Click button to zoom in and out of the map, and also controls the available state of the

than the screen, the control range if (Rect.width () >= width) {if (Rect.left > 0) {deltax =-rect . Left; } if (Rect.right Inside the Onscale remember to call: /** * Set ZOOM ratio * * Mscalematrix.postscale (scalefactor, Scalefactor, detector.getfocusx (), Detector.getfocusy ()); Checkborderandcenterwhenscale (); Setimagematrix (Mscalematrix); This is good, can be free to enlar

Android Drag and Zoom picturesMay 9, 2014We use apps that often require a view of the image. For example, in which. After clicking on the image, you can zoom in on the image.This blog describes how to drag and zoom pictures. This is the first thing to know about the touch mechanism in

Drag and zoom on Android imagesMay 9, 2014We often need to browse images in the app, such as when you click on the image to zoom in on the image.This blog describes how to drag and zoom the image, this first to understand the touch mechanism in Android, the screen has a fing

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

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