android homemade map problems

            
Ask you great God, I am using a homemade map images and pictures via GPS and then change the relative position of the mark,
Now nearly positioning function, the problem we encounter is: I use a imageview as a background map, you can zoom, but the size of my upper marked coordinates again, I will follow changes in the size of the zoom, I ask, I used What can make the size of the upper coordinate unchanged, and can have a click event!
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Reduce the number of times the background, marked on the enlarged many times. This will offset the background scaling, maintaining a fixed size
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1st Floor positive solution that helps you find relevant information
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I understand what you mean, if I use canvas redraw this map, then click event marked, there is no way to add?
Is there a better way?
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The reply was deleted at the moderator 2012-07-16 11:19:43

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Similarly encountered such a problem-solving
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Does your program have enough memory to load this picture of the situation does not appear ah, I always have this problem, how do you solve?
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Give you a calculation of
bitmap algorithm/ **
* Bitmap algorithm
* /
public static int computeSampleSize (BitmapFactory.Options options,
int minSideLength, int maxNumOfPixels) {
int initialSize = computeInitialSampleSize (options, minSideLength,
maxNumOfPixels);

int roundedSize;
if (initialSize <= 8) {
roundedSize = 1;
while (roundedSize roundedSize << = 1;
}
} Else {
roundedSize = (initialSize + 7) / 8 * 8;
}

return roundedSize;
}

private static int computeInitialSampleSize (BitmapFactory.Options options,
int minSideLength, int maxNumOfPixels) {
double w = options.outWidth;
double h = options.outHeight;

int lowerBound = (maxNumOfPixels == -1) 1:?
(Int) Math.ceil (Math.sqrt (w * h / maxNumOfPixels));
int upperBound = (minSideLength == -1) 128:?
(Int) Math.min (Math.floor (w / minSideLength),
Math.floor (h / minSideLength));

if (upperBound / / Return the larger one when there is no overlapping zone.
return lowerBound;
}

if ((maxNumOfPixels == -1) &&
(MinSideLength == -1)) {
return 1;
} Else if (minSideLength == -1) {
return lowerBound;
} Else {
return upperBound;
}
}

Then so used

InputStream is = this.getResources () openRawResource (R.drawable.map2);.
BitmapFactory.Options option = new BitmapFactory.Options ();

option.inSampleSize = computeSampleSize (option, -1, 1909 * 2089);
option.inJustDecodeBounds = false;
bitmap = BitmapFactory.decodeStream (is, null, option);
Avoid memory overflow
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Ask the landlord how homemade map. . Now I also need to be made a map. Google is the imitation of an entire planet that effect. I wonder if the landlord Can teach me ~
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Hello, I am a android developer, would like to ask your self the map, and I hope to get your reply, my QQ: 1246071330
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Want to learn to share custom maps landlord seeking Demo
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Very much hope that the landlord can share custom maps, and location of DEMO, be grateful! ! !