Created
August 4, 2021 20:47
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ListView to file
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public Bitmap getWholeListViewItemsToBitmap(ListView listview) { | |
ListAdapter adapter = listview.getAdapter(); | |
int itemCount = adapter.getCount(); | |
int allItemsHeight = 0; | |
List<Bitmap> bitmaps = new ArrayList<>(); | |
for (int i = 0; i < itemCount; i++) { | |
View childView = adapter.getView(i, null, listview); | |
childView.measure( | |
MeasureSpec.makeMeasureSpec(listview.getWidth(), MeasureSpec.EXACTLY), | |
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED) | |
); | |
childView.layout(0, 0, childView.getMeasuredWidth(), childView.getMeasuredHeight()); | |
childView.setDrawingCacheEnabled(true); | |
childView.buildDrawingCache(); | |
bitmaps.add(childView.getDrawingCache()); | |
allItemsHeight += childView.getMeasuredHeight(); | |
} | |
Bitmap bigBitmap = Bitmap.createBitmap(listview.getMeasuredWidth(), allItemsHeight, Bitmap.Config.ARGB_8888); | |
Canvas bigCanvas = new Canvas(bigBitmap); | |
Paint paint = new Paint(); | |
int height = 0; | |
for (int i = 0; i < bitmaps.size(); i++) { | |
Bitmap bmp = setBackground(bitmaps.get(i)); | |
bigCanvas.drawBitmap(bmp, 0, height, paint); | |
height += bmp.getHeight(); | |
bmp.recycle(); | |
} | |
try { | |
FileOutputStream fileOutputStream = new FileOutputStream( | |
new File( | |
new ContextWrapper(getApplicationContext()).getDir("imageDir", Context.MODE_PRIVATE), | |
"coso" + System.currentTimeMillis() + ".png" | |
) | |
); | |
bigBitmap.compress(CompressFormat.PNG, 100, fileOutputStream); | |
} catch (FileNotFoundException e) { | |
e.printStackTrace(); | |
} | |
return bigBitmap; | |
} | |
private Bitmap setBackground(Bitmap bmp1) { | |
Bitmap overlay = Bitmap.createBitmap(bmp1.getWidth(), bmp1.getHeight(), bmp1.getConfig()); | |
Bitmap background = Bitmap.createBitmap(bmp1.getWidth(), bmp1.getHeight(), bmp1.getConfig()); | |
new Canvas(background).drawColor(getUjetStyle().getPrimaryBackgroundColor()); | |
Canvas canvas = new Canvas(overlay); | |
canvas.drawBitmap(background, new Matrix(), null); | |
canvas.drawBitmap(bmp1, new Matrix(), null); | |
return overlay; | |
} |
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