android-bitmap

问题 I am making android wallpaper app. At the start, I didn't use imagecropper and background image for android was very perfect. Then I wanted to add ImageCropper function and I noticed the problem: Image that I got from ImageCropper was very defected and bad quality. I am sure that the problem is here: (Performcrop method(starts activity for result)) public void performCrop(Uri picUri, Bitmap qq){ try { utils = new Utils(getApplicationContext()); int height, width; Display display =

问题 I am trying to create a Bitmap in Android using the Bitmap.Config.ARGB_8888 after I have received the bytes from an external source. As I understand the fastest way to set raw bytes in a Bitmap (without using JNI ) is by using the copyPixelsFromBuffer() method, however the question arises regarding the correct order of the bytes in that buffer. After some trial and error, and despite the fact that Config.ARGB_8888 suggests a correct order of ARGB it seems that the internal format used by

问题 i often get out of memory errors in my app. I believe it has to do with the bitmaps i download from the server. Any ideas why? **A method in my activity that sets up ListView:** private class NewsFeedArrayAdapter extends ArrayAdapter<AnimalLocationLog> { ArrayList<AnimalLocationLog> objects; Context context; ArrayList<String> urls; ImageDownloader downloader; public NewsFeedArrayAdapter(Context context, int textViewResourceId, ArrayList<AnimalLocationLog> objects, ArrayList<String> urls) {

问题 I set the intent flags here: public void createAlbum(View view) { Intent intent = new Intent(); intent.setType("image/*"); intent.setAction(Intent.ACTION_OPEN_DOCUMENT); intent.addCategory(Intent.CATEGORY_OPENABLE); intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true); intent.addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION); String intentChooserDialog = getResources().getString(R.string.pick_image_dialog); startActivityForResult(Intent.createChooser(intent, intentChooserDialog), PICK

问题 I am storing some images locally on the device as compressed bitmaps. To retrieve them i get them from their file path, decode them, and then store them as BitmapDrawables. I now need to use these bitmapDrawables to populate a viewPager. This is the code that effectively gets all my bitmaps into a bitmap array: public void getMySeenExhibits() { string[] myImages; myImages = DBconnection.getAllImageURLs (conn); // sqLite connection - this gets all the file paths from SqLite List<Drawable>

问题 I'm trying to fill Bitmap inside white circle, more specifically: I've a Bitmap for example this: And I want this: I've make background gray for understand image. I use this method, but it doesn't make what I want.. public static Bitmap getRoundedBitmap(Bitmap bitmap) { final Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888); final Canvas canvas = new Canvas(output); final int color = Color.WHITE; final Paint paint = new Paint(); final Rect

问题 I am using camera 2 API for creating my own camera. I want to set the image taken by the camera in to an ImageView , which is on another activity. I have tried this code but it is not working. When clicking the camera button the photo is saved to an sdcard location, but it is not showing on the ImageView in the third Activity (which should receive the image and set it to an ImageView). I am passing the image as bitmap object via an Intent . Can anyone help me? Camera Activity public class

问题 Is there anyway I can find resource ID from Bitmap, URI, file path or file name of an image? These images are written by my app. So is there any chance I can find the resource ID? Basically, I have GIF images stored in my SD Card (which are created by my app). I want to load those images to my viewer. For that, I am using GIF Movie View library. In that file, setMovieResource() expecting an int (resource ID). But I have all other info like bitmap, absolute path. 回答1: Resource IDs are

问题 I have two image buttons,for camera and gallery . If you select "camera" you can capture a photo from camera and then that photo has to be displayed in another activity in image view. If you select "gallery" then you have to select a photo from gallery and then that photo has to be display it in another activity . My code for gallery works fine . I created two others activities(with the same layout), one for gallery and the other for camera. But the code for camera doesn't work . Here is my

问题 Welcome all I have a background image and what I want is for it to be moving slowly to the right and when the image has reach the right end of the screen with the end of the left starting side of the image, the image must start again showing the start of the right side, as an infinite horizontal scroll. How can this be achieved without generating bitmap overflow memory exceptions? I tryed it drawing two times the bitmap with canvas... but it is not smooth, it is very creepy with jumps and not