Hi, In certain situations you may need to make visible or invisible certain sprites. But how to set a sprite visible and invisible in Cocos2D? See the following Cocos2D code. //Set the sprite’s visible value to 1 to make it visible yourSprite.visible = 1; //Set the sprite’s visible value to 0 to make it invisible… Read More »
Hi, There may arise some situations where you need to change the z value of a particular sprite during an action in Cocos2D. So how can you do that? See the following lines of code. CCSprite *sample= [CCSprite spriteWithFile:@”trialImage.png”]; sample.position = ccp(160,240); [self addChild:sample z:1]; /* Some of your actions goes here! */ [self reorderChild:sample… Read More »
For showing a number of animations sequentially in Cocos2D we use the CCSequence. CCSequence can accept a number of actions as parameters which will be executed in sequence , ie one after another. Here is a sample code to so this. /* This action will scale my_sprite */ id scaleTo = [CCScaleTo actionWithDuration:4 scale:1.5]; /*This… Read More »
In this post, we will have a list whose rows are made up of image, Here we just supply data to the adapter and helping the adapter to create a View objects for each row The output will be For this first create a xml file to hold the listview The next objective is to… Read More »
Hi all.. In this tutorial I will lead you to show how to install a new skin for your ANDROID Emulator. The steps are really easy 1. Download the skin from here( http://www.android.encke.net/) 2.Extract it and copy to android/platforms/the_version_of_emulator_you_want_to_skin/skins 3. Now from here you have two options for starting the emulator with the new skin… Read More »
In many of our android applications we need images and other files to be inside your emulator, such as images in the gallery. But unlike iPhone we cannot simply drag and drop files inside the emulator., because iPhone’s is simply a simulator. It justs creates an envoronment for testing. But ANDROID mimics the real phone.… Read More »
Multiple Notifications are a unique feature in ANDROID phones. This tutorial will show you how to create notification from your application. ANDROID uses the NotificationManager class to create the notification. Let’s look at the code. Explanation. mManager.notify(APP_ID, notification); This line in the code sends the notification where notification is the object of the Notification class… Read More »
Hi, You all know how to add an Image to a sprite. But what if we need to change the image of the same sprite? How to do that? Use the following line of code to change the image of a sprite which already initialized with a sprite. [sampleSprite setTexture:[[CCTextureCache sharedTextureCache] addImage:@”newImage.png”]]; where sampleSprite is… Read More »
Hi, On certain occasions you may need to flip the sprite you are using in your application. There are two ways to flip a sprite. Let’s see how this can be done along X-direction Method:1 mySprite.flipX = 180; where mySprite is the name of your sprite you want to flip. Method:2 CCFlipX *flipOnX = [CCFlipX… Read More »
Hi, In one of our previous post we have discussed how to animate sprite sheet in cocos2D. In some cases you may need to stop the sprite sheet animation abruptly. How to do that? Here the way to do that. Use the following. [spriteName stopAction:spriteNameAction]; where spriteName is the name of your sprite & spriteNameAction… Read More »
This is a simple example of creating options Menu in ANDROID. This menu can be seen by clicking on the “Menu Button” in ANDROID. Check out this example. The main.xml for the above code is
What is context menu? Where it is used? How it is used? I will cover all these questions… Context Menu A context menu is conceptually similar to the menu displayed when the user performs a “right-click” on a PC. You should use a context menu to provide the user access to actions that pertain to… Read More »
Cropping an image in ANDROID programmatically has always been a problem for ANDROID developers. So Here I am putting a sample code to demonstrate this. For cropping an image in ANDROID we need a source bitmap which is our image itself, the other one is the target bitmap which we have to set the size… Read More »
Hi, Suppose you have a sprite sheet of the desired animation you want. But how will you use that sprite sheet animation in your program using cocos2D? That’s simple. See the following code first. //Initializing a CCSpriteBatchNode with our sprite sheet image CCSpriteBatchNode *newSpriteSheet = [CCSpriteBatchNode batchNodeWithFile:@”jumpingOver.png”]; //Adding the spriteSheet to the layer & setting… Read More »
OK The first question is 1. How to create a new Virtual SD card in emulator in ANDROID? Many times we may have not enough memory for our application to run on the emulator. So what we do? One method is to create new virtual device with more memory. Another method is to extend the… Read More »
ListView is like a tableView in iPhone or iOS . In this example i will show you how to add a String Array in to the ListView and also make the listView Scrollable. First the xml file . Here the line android:scrollbars=”vertical” will make the scrolling vertically Now the java file The screen will be… Read More »
File reading is important in android. For the put the files in the assets folder. We can able to read foldername filename Contents of the file First we read the name of the folder. “folder_array” contains all the names of the folder Then if the path is set to Then the list of file name… Read More »
Hi, While using Box2D , in many cases you may need to connect two bodies together. But the collision between them during motion is not what you preferred! So how can you prevent those bodies being connected in Box2D from collision? Use the line of code to prevent the collision. jointDef.collideConnected = false;
Hi, Suppose you want to copy a sprite image to another new sprite while using cocos2D. What you do? See the following code… Let oldSprite be your first sprite CCSprite *oldSprite = [CCSprite spriteWithFile:@”ImgOne.png”]; And newSprite be your second sprite CCSprite *newSprite = [CCSprite spriteWithTexture:[oldSprite texture]]; That’s it! Done! Now newSprite too contain ImgOne as… Read More »
Yet another animation api from cocos2D, check it out…… id move = [CCMoveTo actionWithDuration:1 position:ccp(200,250); CCEaseElasticIn *elasticIn = [CCEaseElasticIn actionWithAction:move period:2.0]; [my_sprite runAction:elasticIn ];
This code snippet deletes a substring from a original string.. /** initialize two strings **/ NSString *string = @”This is heaven”; NSString *part = @”heaven”; /** Get the range of the substring in the original string **/ NSRange range = [string rangeOfString:part]; /** Delete the substring from the original string **/ [string deleteCharactersInRange:range]; Please leave… Read More »
GridViews are those in which you can arrange elements in a two dimensional grid. It is what you see in the gallery where images are arranged. Here images are arranged in a two dimensional grid. Copy the below code and save it as “MyGridView.java” Now create another file named “Images.java” and copy the below code… Read More »
In android there are different layouts and we often confuse about which one to use. Even if we select one, it is little complicated. So this tutorials is to show you about the TableLayout Here i first created linear Layout in which a Table Layout is added Here you can see that the first row… Read More »
This simple code plays a music…….. [[SimpleAudioEngine sharedEngine] playBackgroundMusic:@”my_music.mp3″]; For stopping the music use this……. [[SimpleAudioEngine sharedEngine]stopBackgroundMusic]; To pause the music use this line of code….. [[SimpleAudioEngine sharedEngine] pauseBackgroundMusic];
Gear joints are one of the real specialities of Box2D. By creating gear joints between two bodies you can actually simulate a real world gear. For creating a gear joint you need two bodies connected by a revolute or prismatic joint. The below code creates two bodies in the shape of a circle which is… Read More »