how to invert picture on android

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 supp

This article describes the Android programming click Picture to achieve the switching effect of the method. Share to everyone for your reference, specific as follows: Create a new Android project named Framelayout This instance mainly operates the Mainactivity.java class files under the SRC folder and the Activity_main.xml layout files under Res/layout 1. Layo

In the Android design process, in order to adapt to different mobile phone resolution, most of the pictures need to stretch or compress, so that there can be arbitrarily resized a picture format ". 9.png". The picture is a special image format for Android development, and the advantage of this is that you can use a si

Viewpager This small demo is to be able to loop around the picture, the following index, slide to the last page in the right slide will be the first page, the first page to the left slide to the last page, first on the effect of the picture: 1, first look at some layout under the XML Use Viewpager first need to introduce Android-support-v4.jar

This article illustrates how Android takes pictures from the system gallery. Share to everyone for your reference. Specifically as follows: In your own application, take pictures from the system gallery and intercept them, and then return to your application. This is a lot of information about the application needs of the image function. Write an example, come up with a big button, even the layout is not. Finally, select a part of the

This article describes the Android implementation of custom with text and Picture button methods. Share to everyone for your reference. The specific analysis is as follows: In Android development, it's often necessary to use a button with text and pictures to explain the common implementations. The implementation of the button with the system itself The easies

have written the wrong) right The postion of the edge is the position of the GetCount () return value above. For example, setting 1000, then position is 0 1 2 3 4 .... 1000, so the left side of the position value is 0 1..list.size () loop. The size of the picture collection is 3, then 0 1 2 0 1 2 ..... Instead, the following table showing the picture is the one that always loops at 0 1 2. So that when you

This article illustrates an example of an Android based image viewer implementation that can be used to adjust transparency, as follows: main.xml Part of the code is as follows: The Java part of the code is: Package Android.demo; Import android.app.Activity; Import Android.graphics.Bitmap; Import Android.graphics.BitmapFactory; Import android.graphics.drawable.BitmapDrawable; Import Android.os.Bundle; Import android.view.MotionE

I. Overview Android implements rounded rectangles, circles, or ellipses, typically a custom view plus the use of Xfermode implementations. The method of realizing fillet picture is actually quite many, common is to use Xfermode,shader. This article directly inherits the ImageView, uses the Bitmapshader method to realize the circle, the round angle and the ellipse drawing, after everybody sees my this artic

configuration XML file to achieve the background switch effect of the picture button, the method is as follows:1) Add a image_btn_press.xml file under layout with the following content:"1.0"encoding="Utf-8"?> "http://schemas.android.com/apk/res/android"> "false"android:drawable="@drawable/android_btn"/> "true"android:drawable="@drawable/android_btn"/> "true"android:drawable="@drawable/android_btn_pressed"/

First find the SDKthat your development software relies on, find the installation path of this SDK in your computer , If there are too many SDKs Not clear,Window→Android SDK Manager Point Open can see your dependent SDK Path, Needless to say directly send a link to see, inside is very detailedHttp://jingyan.baidu.com/article/86fae346b60f633c49121a97.htmlNote: Some special pictures you do not want to let him any part of the scale, this time you need t

Android.intent.action.PICK action, you can choose a picture or video. And the book is Android.intent.action.GET_CONTENT.Successfully jump to the cropping screen after the change.Another problem, I useUri selectedimage = Data.getdata ();//Gets the URI of the photo returned by the systemThe output shows that this is not an absolute path.This is not right for us to set up on the imagevew or upload to the network.Demo:I'm giving you a demo from the photo

/** * Gets the absolute path of the picture according to the URI * * @param Context Context Object * @param URI of the image of the URL * @return if the URI corresponding to the picture exists, then return The absolute path of the picture, otherwise returns NULL */public static String Getrealpathfromuri (context context, Uri uri) {int sdkversion = B Uild. VERSION

This example describes the Android development using Exifinterface to get picture properties after taking pictures. Share to everyone for your reference, specific as follows: Exifinterface exif = new Exifinterface (File.getpath ()); String widthstr = Exif.getattribute (exifinterface.tag_image_width); String heightstr = Exif.getattribute (exifinterface.tag_image_length); ...... * * Copyrig

desired height to reduce the image to px* @param aimsize image compression target size, in kilobytes*/public static Bitmap Comp (Bitmap image, float aimwidth, float aimheight,int aimsize) {Bytearrayoutputstream BAOs = new Bytearrayoutputstream ();Image.compress (Bitmap.CompressFormat.JPEG, BAOs);if (Baos.tobytearray () length/1024) > 1024) {//Determine if the picture is greater than 1M, if it is, compress it to avoid creating the

The size of the image in android = The total number of images * Each image occupies the size.Android saves picture pixel information using ARGB, meaning that each pixel occupies 4 bytes.For images with a resolution of 2400*3200, loading to Android requires 2400*3200*4=30720000 bytes, requires 30000Kb, requires 29.30MbThe image of this resolution is loaded directl

(); Paint.setstrokewidth (5); Paint.setcolor (Color.green); Switch(action) {//Finger Press CaseMotionEvent.ACTION_DOWN:startX=(int) Event.getx (); Starty=(int) event.gety (); Break; //Finger Movement CaseMotionevent.action_move:intNewx= (int) Event.getx (); intNewy= (int) event.gety (); //Dashcanvas.drawline (StartX, Starty, newx, newy, paint); StartX=(int) Event.getx (); Starty=(int) event.gety (); Iv_img.setimagebitmap (BASEBI

XmlXML version= "1.0"?>-LinearLayoutTools:context=". Mainactivity "Android:paddingtop= "@dimen/activity_vertical_margin"Android:paddingright= "@dimen/activity_horizontal_margin"Android:paddingleft= "@dimen/activity_horizontal_margin"Android:paddingbottom= "@dimen/activity_vertical_margin"android:orientation= "vertical"Android:layout_height= "Match_parent"Android:layout_width= "Match_parent"Xmlns:tools= "Http://schemas.android.com/tools"xmlns:android= "Http://schemas.android.com/apk/res/

Android.widget.ImageView.ScaleType; public class Mainactivity extends activity {protected static final String TAG = "mainactivity"; Private int[] Mimgids; Private Jazzyviewpager Mviewpager; @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (R.layout.activity_main); Mimgids = new int[] {r.drawable.a, r.drawable.b, r.drawable.c, R.DRAWABLE.D}; Mviewpager = (Jazzyviewpager) Findviewbyid (R.id.id_viewpager); Se

need to use this control in XML (remember to add a picture, otherwise it would be equivalent to an ordinary EditText): It is only necessary to load the activity normally: Private Edittext_passworddisplay et_passwordregisterinput; @Override protected void onCreate (Bundle savedinstancestate) { super.oncreate (savedinstancestate); Setcontentview (R.LAYOUT.ACTIVITY_REGISTER3); Init (); } private void Init () { et_passwo