Source link: https://github.com/sharish/BitmapMerger

BitmapMerger

Bitmap Merger is a simple project help you to merge two bitmaps without memory exceptions. The bitmaps are processed in background threads thereby taking the load away from UI thread. Along with merge, it also contains the image decoder for decoding images from resources/disk and are sampled to prevent OutOfMemoryError.

Examples of Bitmap Merger with this project

Merging at angle away	Merging at center	Merging with offsets

Moon moving around the earth for various angles	Stamp at center of the document being scaled	Balloon flying in a beach with various offset values

###Usage :

####Merging at angle away

int angle = 90; // your angle here float scale = 0.5f; // scaling option for merging the image Bitmap baseBitmap; // your base bitmap here Bitmap mergeBitmap; // your merging bitmap here ImageView imgView; // your image view for displaying the merged bitmaps. BitmapMergerTask task = new BitmapMergerTask();

 task.setBaseBitmap(baseBitmap)

.setMergeBitmap(mergeBitmap)

.setMergeListener(new BitmapMergerTask.OnMergeListener() {

 @Override

 public void onMerge(BitmapMergerTask task, Bitmap mergedBitmap) {

  if(imgView != null) {

 imgView.setImageBitmap(mergedBitmap);

  
}

 
}

}
)

.setScale(scale)

.setAngle(angle)

.merge();

####Merging at center

float scale = 0.5f; // scaling option for merging the image Bitmap baseBitmap; // your base bitmap here Bitmap mergeBitmap; // your merging bitmap here ImageView imgView; // your image view for displaying the merged bitmaps. BitmapMergerTask task = new BitmapMergerTask();

 task.setBaseBitmap(baseBitmap)

.setMergeBitmap(mergeBitmap)

.setMergeListener(new BitmapMergerTask.OnMergeListener() {

 @Override

 public void onMerge(BitmapMergerTask task, Bitmap mergedBitmap) {

  if(imgView != null) {

 imgView.setImageBitmap(mergedBitmap);

  
}

 
}

}
)

.setScale(scale)

.merge();

####Merging with offsets from top left

int leftOffset = 0; // your left offset in pixels int topOffset = 0; // your top offset in pixels float scale = 0.5f; // scaling option for merging the image Bitmap baseBitmap; // your base bitmap here Bitmap mergeBitmap; // your merging bitmap here ImageView imgView; // your image view for displaying the merged bitmaps. BitmapMergerTask task = new BitmapMergerTask();

 task.setBaseBitmap(baseBitmap)

.setMergeBitmap(mergeBitmap)

.setMergeListener(new BitmapMergerTask.OnMergeListener() {

 @Override

 public void onMerge(BitmapMergerTask task, Bitmap mergedBitmap) {

  if(imgView != null) {

 imgView.setImageBitmap(mergedBitmap);

  
}

 
}

}
)

.setScale(scale)

.setOffsets(leftOffset,topOffset)

.merge();