Is there a way or How do I take a String and create a bitmap from it using Java for development for Android?
I had a look at the java api for bitmaps and couldnt find anything
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1what do you mean by string? Are you talking about something like a base64 encode string?blessanm86– blessanm862011-11-08 05:21:54 +00:00Commented Nov 8, 2011 at 5:21
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just Test, a character array. I just need to create a bitmap that is 96 x 96 px bigRobert de Klerk– Robert de Klerk2011-11-08 05:25:14 +00:00Commented Nov 8, 2011 at 5:25
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You can create a bitmap and set pixel values from any source, including a string. How to do that depends entirely on what's in the string and what you want it to mean. Can you be more specific?Ted Hopp– Ted Hopp2011-11-08 05:26:57 +00:00Commented Nov 8, 2011 at 5:26
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3 Answers
You can use the decodebytearray method of bitmap factory like
byte[] imageAsBytes = Base64.decode(myImageData.getBytes());
Bitmap bp = BitmapFactory.decodeByteArray(imageAsBytes, 0, imageAsBytes.length);
Where myImageData is a base64 string.
If you have an array just pass that to the decodeByteArray method.
Comments
DrawText on canvas by creating bitmap.
Comments
Assuming that your image data is in a String called myImageData, the following should do the trick:
byte[] imageAsBytes = Base64.decode(myImageData.getBytes());
ImageView image = (ImageView)this.findViewById(R.id.ImageView);
image.setImageBitmap(
BitmapFactory.decodeByteArray(imageAsBytes, 0, imageAsBytes.length)
);
For Base64 decoding, you can use http://iharder.sourceforge.net/current/java/base64/ as Android doesn't contain Base64-support prior to 2.2.
Note, I didn't actually run this code, so you'll have to doublecheck for errors.
more link: using canvas http://developer.android.com/reference/android/graphics/Canvas.html
1 Comment
Scott A
You could have just pointed here instead of copying it verbatim: stackoverflow.com/questions/3801760/…