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June 15, 2015 18:24
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Android for Beginners : Simplified ImageView class
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/** | |
* Displays an image, such as an icon. | |
*/ | |
public class ImageView extends View { | |
// Resource ID for the source image that should be displayed in the ImageView. | |
private int mImageId; | |
// Context of the app | |
private Context mContext; | |
/** | |
* Constructs a new ImageView. | |
*/ | |
public ImageView(Context context) { | |
mImageId = 0; | |
mContext = context; | |
} | |
/** | |
* Sets the source image in the ImageView. | |
* | |
* @param imageId is the resource ID of the image to be displayed. | |
*/ | |
public void setImage(int imageId) { | |
mImageId = imageId; | |
} | |
} |
A constructor is a method that is called or invoked when the object is created. A class is just the blueprint of an object.
helpful ..thanks
Simple example helpful!
nice
nice
nice
helpful
Seems errors noticed by our predecessors have been corrected. Nice work
Thanks.
thanks
Thanks
TNX
thanks ♥
please can anyone explain why the member variables they used were declared private access modifier
private int mImageId;
**private** Context mContext;
please can anyone explain why the member variables they used were declared private access modifier
private int mImageId;**private** Context mContext;
I copied the answer from the other site:
What is difference between Private and Protected?
Private get only used in his class , but protected can used in his class and in the same package and derived class
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in place of setImage method there is src to set image.