drawing programs for android

Control partitioning: Self-drawn controls, composite controls, inherited controlsHow do you customize the view in each of these ways?First: Self-drawing controlsInherit view, override OnDraw method, reference in Layout fileExample: Water ripple waterripplesactivity1 Public class extends Activity {2 @Override3 protected void OnCreate (Bundle savedinstancestate) {4 Super. OnCreate (savedinstancestate); 5 Setcontentview (r.layout

(Mmvpmatrixhandle,1,false, Mvpmatrix,0);//Draw the triangleGles20.gldrawarrays (Gles20.gl_triangles,0, Vertexcount);//Disable vertex arrayGles20.gldisablevertexattribarray (Mpositionhandle);}If there is a correct calculation and the correct use of the integrated matrix, then the graph will be drawn in the correct proportions, the final look should be the effect of such a child:Now the program can normally display the normal proportion of the graph, it is time for the graphics to add action.

Custom view has always been a hurdle for Android developers. The relationship between view and ViewGroup From view and ViewGroup relationship, ViewGroup inherits view. View subclasses, mostly functional controls, provide the style to draw, such as Imageview,textview, and ViewGroup subclasses, used to manage the size of controls, locations, such as Linearlayout,relativelayout, As you can see from the figure below, From the practical application,

very hard to do it, and using another new technology is very easy to achieve, I believe most will choose the familiar technology implementation, Even if his workload is very large. Like the HTML editor and the Markdown Editor, Markdown is significantly more powerful in typography than the HTML editor, but many people are reluctant to switch over. But what I want to say today is actually as a programmer, our field if the emergence of new technology, we have the energy of the premise that we shou

The example in this article describes the Android programming method for drawing circular pictures. Share to everyone for your reference, specific as follows: The effect chart is as follows: First step: Create new Roundview custom control inherit view Package com.rong.activity; Import COM.RONG.TEST.R; Import Android.content.Context; Import Android.graphics.Bitmap; Import Android.graphics.Bitmap.Con

1 Android Drawing View simple description of the processA simple description can be interpreted as: Calculate size (measure), Layout coordinate calculation (layouts), Draw to the screen (draw);Let 's take a look at each step of the action exactly what it is,The first step: When the activity starts, triggering the initialization of the view process is called by the Window object's Decorview call view (specif

RECTF (240, 240, 300, 300);/*** Draw a solid fan* First parameter: A rectangle, the size of the user-defined Pie* Second parameter: The starting angle of the drawing fan* The third parameter: the angle to be drawn* Whether the fourth parameter includes a circle (true is included, usually used to draw a fan; False is not included, generally used for arcs)* Fourth parameter: Brush*/Canvas.drawarc (oval, 0, Max, true, Mpaint);---------------------------

When drawing a dynamic diagram in canvas, if a fixed background image is used, only a small sprite is moving! In this case, you have to redraw the background picture in the frame without frames, making it less efficient! Tried all kinds of methods, and finally failed! If someone has a good method, can provide a bit, thank you! Here are some of the ways to share in the process : 1, an article about the picture redraw, but only applies to the Genie

The Android drawing operation implements the drawing in the OnDraw function by inheriting the view implementation. The following is a simple example: Copy Code code as follows: public class Androidtest extends activity { /** called the activity is a. */ @Override public void OnCreate (Bundle savedinstancestate) { Super.oncreate (savedinstancestate

Recently prepared skills contest, need to be read from the sensor data in the mobile client in the form of a diagram, because usually very little drawing, so a variety of search data, is reluctantly made.The following is the contest theory (left) and the actual (right), really is the ideal is plump, the reality is very skinny!　　　　The overall idea of production: Create a custom class that inherits from the view class The OnDraw () method i

It's an interesting little thing: using a custom view drawing, drawing lines, and drawing lines that fade until they disappear. The effect is shown in the following illustration: You can make a stroke of change with a property animation or a gradient fill (Shader), but if you want a gradient (the finger doesn't lift the edge of the

Problem:As for how to draw the dotted line is not much to say, online everywhere, talk about the development of the problems encountered:1. starting with Android3.0, the Android 2D drawing process is designed to better support hardware acceleration. Hardware acceleration is used when you use the GPU's view to draw on the canvas. But then when we define the shape to draw the dashed line, we find that the

view (otherwise, the compiler will prompt for errors). However, adding a linearlayout as root View in the reusable layout will result in a vertical linearlayout containing additional vertical linearlayout. Inline linearlayout can only slow UI efficiency, and others are useless. The reuse layout utilizes. XML to render as follows:[Java]View Plaincopyprint? "Http://schemas.android.com/apk/res/android" android:orientation="Vertical" Android:

Question: Official QC of a Firemonkey mobile platform draw line problem:RSP-14309: [IOS Android] Delphi 10.1 berlin-drawing problemshttps://quality.embarcadero.com/browse/RSP-14309Applicable: All Firemonkey versions for Android IOSRepair method:Please make the source FMX. Strokebuilder.pas Copy to your project directory and make changes.STEP1: Found the followi

1. PrefaceLevel signal status of the view in the current Android system is very common, such as the cell phone in the upper right corner of the icon of the battery status is very classic, there are several states, to the time when there is no power when some will blink prompting the user to charge, there are some maps app GPS signal strength hints, WiFi signal strength is also some, anyway the application scenario is probably the case.2. Achieve the g

Double-buffered technical drawing:What happens when a double buffering technique is generated?When the amount of data is large, the drawing may take a long time, so the screen will be stuck, flashing and so on.What is dual buffering technology?Double buffering is the creation of an object in memory that is consistent with the screen drawing area, drawing the grap

, for drawing.Through the above process can basically determine the view of the drawing process, the flowchart is as follows:Inquiries or technical exchanges, please join the official QQ Group: (452379712)Jerry EducationSource:http://www.cnblogs.com/jerehedu/This article is the copyright of Yantai Jerry Education Technology Co., Ltd. and the blog Park is shared, welcome reprint, but without the consent of the author must retain this paragraph statemen

indicate the any further requests is happening during ... ho St.layout (0, 0, host.getmeasuredwidth (), Host.getmeasuredheight ()); ...... } }}} finally {Trace.traceend (Trace.trace_tag_view); } minlayout = false; }3, Method Performdraw, used to draw the view, trace the source discovery, finally called the Mview.draw (canvas) method, for drawing.Through the above process can basically determine the view of the draw