I have a memory problem with Google Maps when there are too many markers on the map : OutOfMemoryError. From what I've read on the Internet, it's bitmaps that are a problem. Bitmaps (all different from each other) are dynamically generated.
Here is my code of each dynamic bitmap :
LayoutInflater inflater = (LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View inflatedFrame = inflater.inflate(R.layout.friend_layout_map, null);
final FrameLayout frameLayout = (FrameLayout) inflatedFrame.findViewById(R.id.friend);
/** customizing the view **/
frameLayout.setDrawingCacheEnabled(true);
frameLayout.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
frameLayout.layout(0, 0, frameLayout.getMeasuredWidth(), frameLayout.getMeasuredHeight());
frameLayout.buildDrawingCache(true);
Bitmap bm = Bitmap.createBitmap(frameLayout.getMeasuredWidth(), frameLayout.getMeasuredHeight(),
Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bm);
canvas.drawColor(Color.WHITE, PorterDuff.Mode.SRC_IN);
Drawable drawable = frameLayout.getBackground();
if (drawable != null)
drawable.draw(canvas);
frameLayout.draw(canvas);
Then, each bitmap is used :
#Override protected void onBeforeClusterItemRendered(Map_frag.Map_Cluster item, MarkerOptions markerOptions)
{
markerOptions.icon(BitmapDescriptorFactory.fromBitmap(item.bm));
/** item.bm is bm in the previous code extract **/
}
All this works well when there are 20 markers. But as soon as there are 50, for example, the OutOfMemoryError occurs.
So I tried several solutions:
Enable largeHeap to the Manifest. This seems to allow adding a few more markers before the application crashes. But very quickly, the error occurs again.
Release the memory used by each bitmap with the following code : markerOptions.icon(BitmapDescriptorFactory.fromBitmap(item.bm));
bm.recycle();
bm = null;
But it doesn't work. The line markerOptions.icon(BitmapDescriptorFactory.fromBitmap(item.bm)); crash saying that the bitmap can't be a recycle bitmap. Strange, because bm.recycle() is placed after the execution of this line.
So I don't know what to do anymore! Thank you in advance for your help. If some important pieces of code are missing I can add them.
Related
I am working on application that allows users to shade a portion of bitmap when the swipe on it. Then when he finishes swiping I call a method to crop that portion of bitmap and perform some function(but cropped bitmap is not saved anywhere so doubt there is any problem here). On click on imageView I reset the bitmap with original bitmap. There is also a functionality to rotate the bitmap.I have two bitmap objects bill(user actually swipes on it) and billOrg(original bitmap as it is). Below are the methods.
private void drawShade(float left,float top,float right,float bottom){
//this method draws shade on bitmap. Coordinates are sent from onTouchEvent
TAG = "drawShade";
//parseTouchPointsString();
Bitmap tempBitmap = Bitmap.createBitmap(bill.getWidth(), bill.getHeight(), Bitmap.Config.RGB_565);
Log.d(TAG,"bill:"+bill.isMutable()+"tempBit:"+tempBitmap.isMutable()+"");
Canvas tempCanvas = new Canvas(tempBitmap);
tempCanvas.drawBitmap(bill,0,0,null);
tempCanvas.drawRoundRect(new RectF(left,top,right,bottom), 10, 10, shadePaint);
imgView.setImageDrawable(new BitmapDrawable(getResources(), tempBitmap));
if(fingerUp) {
Log.e("fingerUp",fingerUp+"");
bill = tempBitmap;
}
Log.d(TAG,"shade drawn at:"+left+","+top+","+right+","+bottom);
}
Here is method to rotate bitmap :
public void rotateImage(View v){
TAG = "rotateImage";
Matrix matrix = new Matrix();
matrix.postRotate(90);
Bitmap rotatedBitmap = Bitmap.createBitmap(bill , 0, 0, bill.getWidth(), bill.getHeight(), matrix, true);
bill = rotatedBitmap.copy(rotatedBitmap.getConfig(),true);
createScaledBitmap();
billOrg = bill.copy(rotatedBitmap.getConfig(),true);//bill.copy(bill.getConfig(),false);
setImage(bill);
rl.invalidate();
}
Method to reset bitmap on click :
private void resetImageView(boolean saveShade){
//the boolean var here tell whether to keep the shaded portion after reset or not
if(!saveShade) { //app crashes in this if block although I have try-catch.
try {
Canvas canvas = new Canvas(bill);
Log.e("resetImageView", "billOrg:" + billOrg.isMutable() + ",bill:" + bill.isMutable()); //returns true for both bitmap objects
canvas.drawBitmap(billOrg, 0, 0, null);
touchBounds = "";
tv_res.setText("");
rl.invalidate();
setImage(bill);
}catch(Exception ex){
Log.e("resetImage",ex.getMessage());
}
}else{
Canvas canvas = new Canvas(bill);
canvas.drawBitmap(bill, 0, 0, null);
touchBounds = "";
tv_res.setText("");
rl.invalidate();
setImage(bill);
}
}
All is fine except when user first swipes the image --> then rotates the image --> then clicks on bitmap.
All I get is this error: jni_helper.cc:110 Bitmap is of the wrong format: 4. No other exceptions.
As per my knowledge bitmaps usually throw errors if we try to modify a bitmap object which is immutable but I have made it mutable in all places. It prints mutable in logs too. I guess I am doing something wrong while modifying the bitmaps. I know might be confusing for you. I don't know how well I have explained. If you need any clarity kindly ask. I need some help.
Ok so I found out what was causing the problem.
Bitmap tempBitmap = Bitmap.createBitmap(bill.getWidth(), bill.getHeight(), Bitmap.Config.RGB_565);
In the drawShade() method was culprit. I changed the "Bitmap.Config.RGB_565" to bill.getConfig() and it was fixed.
I'm trying to make a screenshot of the rotated TextView which contain emoji icons. But on resulting bitmap i see that emoji are not rotated! Why is this happening? How can i make a screenshot with rotated emoji ?
What i expect:
And this is what i get:
I'm using this method to get screenshot of view:
layout.setDrawingCacheEnabled(true);
layout.buildDrawingCache();
Bitmap bitmap = null;
if (layout.getDrawingCache() != null)
bitmap = layout.getDrawingCache().copy(Bitmap.Config.ARGB_8888, false);
layout.setDrawingCacheEnabled(false);
layout.destroyDrawingCache();
Update:
as i figured, if I set textView.setLayerType(View.LAYER_TYPE_SOFTWARE, null); then emoji will not be rotated even in the TextView (if you rotate TextView - they will not be rotated, they will be just moving around like a carousel), but still I don't really understand why is this happening, or rotation of emoji (on first picture) is only because of hardware acceleration?
ok, i couldnt find a way to solve this really annoying issue, so i had to hack it a bit.
imageviews works perfectly with rotation.
so i basically do all the manipulations with image view - and setting it's image out of the emoji text i want using this method:
private Bitmap generateBitmapFromText(int size, String res) {
TextView tv = new TextView(getContext());
tv.setText(res);
tv.setTextSize(TypedValue.COMPLEX_UNIT_PX, 150f);
tv.setTextColor(0xffffffff);
tv.measure(size, size);
int questionWidth = tv.getMeasuredWidth();
int questionHeight = tv.getMeasuredHeight();
Bitmap bitmap = Bitmap.createBitmap(questionWidth, questionHeight, Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(bitmap);
tv.layout(0, 0, questionWidth, questionHeight);
tv.draw(c);
return bitmap;
}
and then i call
Bitmap bitmap = generateBitmapFromText(stickersStartingSize, res);
imageview.setImageBitmap(bitmap);
I am unable to get bitmap of expandable listview
This is what I tried
private Bitmap convertViewToBitMap() {
View printlayout = (View) getActivity().findViewById(R.id.expandableList);
printlayout.setDrawingCacheEnabled(true);
printlayout.measure(
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
printlayout.layout(0, 0, printlayout.getMeasuredWidth(),
printlayout.getMeasuredHeight());
printlayout.buildDrawingCache(true);
Bitmap b = Bitmap.createBitmap(printlayout.getDrawingCache());
printlayout.setDrawingCacheEnabled(false); // clear drawing cache
return b;
}
Following method helped me
private Bitmap convertViewToBitMap() {
View printlayout = (View) getActivity().findViewById(R.id.expandableList);
printlayout.setDrawingCacheEnabled(true);
Bitmap b = printlayout.getDrawingCache();
return b;
}
I think all you need it to get the hold of the view and convert that view into the bitmap and then print the bitmap.
You can get the view using findViewById();
For converting view into bitmap, a quick google may help more, but i found this
And once you have bitmap, do what ever you want.
#Pietu1998 pointed correctly, also show your attempt so reduce chance for downvoting.
You can re-draw your list into a bitmap which you can then use.
Here I'm issuing a re-draw on an instance variable mListView and then using that bitmap for my ImageView. Note that I'm using a Handler to force the re-draw on the UI thread.
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
Bitmap bitmap = Bitmap.createBitmap(mListView.getWidth(),
mListView.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
mListView.draw(canvas);
// Do something the
((ImageView)mContext.findViewById(R.id.img)).setImageBitmap(bitmap);
}
}, 1);
Also note that you will need to have the ImageView inside of your xml already and the ListView not taking up all the space in the layout.
I'm building a game using Android 2.2. The main game Activity uses a custom SurfaceView:
class GameView extends SurfaceView
From what I understand, the onDraw() method requires its own Thread to be executed. That in mind, I am planning to add a background image in onDraw():
canvas.drawBitmap(wallpaper, 0, 0, paint);
paint = new Paint();
But when I execute the game, it becomes very slow. If I comment out the new Paint() line, the game speeds up.
Is there something I am doing wrong, or is there a solution to my problem? For example, is there a way to reduce the number of calls to onDraw()? Or add an XML attribute to my custom SurfaceView class?
Here's the code how I load the drawable images.
public Bitmap loadBitmap(String image) {
Bitmap bitmap = null;
try {
int id = R.drawable.class.getField(image).getInt(new Integer(0));
bitmap = BitmapFactory.decodeResource(context.getResources(), id);
// bitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.RGB_565);
} catch(Exception ex) {
Log.e("loadBitmap", ex.getMessage());
}
return bitmap;
}
Here's the code of the onDraw method.
Unfortunately, I can't post everything.
paint.setColor(Color.BLACK);
canvas.drawRect(0, 0, getWidth(), getHeight(), paint);
canvas.drawBitmap(gameLevel.getBitmap(), 0, 0, paint);
// draw object(1) 320x25
// draw object(5) 50x50 each
// draw object(n) 15x15 each, estimate
// draw object(n) 50x50 each
// collision check, draw hit tile on the image sheet
// draw game information using canvas.drawText()
timeLine++;
Thanks in advance!
If the problem is only the "paint = new Paint();" line, why don't you create the Paint object only once? When the class is first created and make it a Class variable. Then just use the object everytime you want.
You could try to load the background as RGB_565 instead of ARGB_8888 in case you haven't already. Otherwise there is not much you can do except switching to OpenGL
EDIT:
Options options = new Options();
options.inDither = false;
options.inJustDecodeBounds = false;
options.inSampleSize = 1;
options.mCancel = false;
options.inPreferredConfig = Config.RGB_565;
bitmap = BitmapFactory.decodeResource(context.getResources(), id, options);
If that doesn't help other reasons may be:
You drawing code is wrong
You scale the background when you draw it
You run it on an emulator
I have been trying to create a bit map of a list view, where the entire list view is not visible on the screen. I am using
Bitmap mBitmap = fullView.getDrawingCache();
to create bitmap. It works ok for the part of list view that is visible on the screen but, not for the part that isn't.I would like to know if a bitmap of a list view can be created without having to display it completely on the screen. All suggestions and or solutions are appreciated.
As android only draws what is visible, may idea would be to take bitmaps in pieces and then group the bitmaps into a single one. You could first get the bitmap of first n items. Then use the scrollTo method to scroll beyond the previous n items and get the bitmap for the next n items. This way you can get bitmap of the whole list view.
Try using this method. Hack here is calling the layout and measure method of the view yourself.
public Bitmap loadBitmapFromView(View v) {
v.setLayoutParams(new ViewGroup.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT));
v.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
v.layout(0, 0, v.getMeasuredWidth(), v.getMeasuredHeight());
Bitmap bitmap = Bitmap.createBitmap(v.getMeasuredWidth(),
v.getMeasuredHeight(),
Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(bitmap);
v.layout(v.getLeft(), v.getTop(), v.getRight(), v.getBottom());
v.draw(c);
return bitmap;
}
Pass the view in this method like
LayoutInflater inflater = (LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View inflatedFrame = inflater.inflate(R.layout.my_view, null);
Bitmap bitmap = loadBitmapFromView(inflatedFrame.findViewById(R.id.id_of_your_view_in_layout));