I Was trying to set image to imageimageviewview from external storage and I done with that, but the thing is that it sets the whole image to imageview and I only want to set the selected square area from that image. Just life facebook provided functionality to set profile pic..
Can any one help me to do it??
Following is the sample what i want to do..
Something like this:
public static Bitmap cropBitmapToSquare(Bitmap bmp) {
System.gc();
Bitmap result = null;
int height = bmp.getHeight();
int width = bmp.getWidth();
if (height <= width) {
result = Bitmap.createBitmap(bmp, (width - height) / 2, 0, height,
height);
} else {
result = Bitmap.createBitmap(bmp, 0, (height - width) / 2, width,
width);
}
return result;
}
Here is a sample with crop activity:
http://khurramitdeveloper.blogspot.ru/2013/07/capture-or-select-from-gallery-and-crop.html
actually my comment above about setImageMatrix was not the best solution, try this custom Drawable (no need to allocate any temporary Bitmaps):
class CropDrawable extends BitmapDrawable {
private Rect mSrc;
private RectF mDst;
public CropDrawable(Bitmap b, int left, int top, int right, int bottom) {
super(b);
mSrc = new Rect(left, top, right, bottom);
mDst = new RectF(0, 0, right - left, bottom - top);
}
#Override
public void draw(Canvas canvas) {
canvas.drawBitmap(getBitmap(), mSrc, mDst, null);
}
#Override
public int getIntrinsicWidth() {
return mSrc.width();
}
#Override
public int getIntrinsicHeight() {
return mSrc.height();
}
}
and testing code:
ImageView iv = new ImageView(this);
Bitmap b = BitmapFactory.decodeResource(getResources(), R.drawable.test);
Drawable d = new CropDrawable(b, 150, 100, 180, 130);
iv.setImageDrawable(d);
setContentView(iv);
Related
I'm loading images from URLs into my ImageView like so -
ImageLoader.getInstance().displayImage(url, imageview, display-options)
Now I would like to crop the image to the center top. I tried using https://gist.github.com/arriolac/3843346 but I think it expects the image via a drawable and I want to use ImageLoader to set the image.
Can somebody help me understand if I can use https://code.google.com/archive/p/android-query/ (Android Query) in conjunction with ImageLoader?
Is there any way to handle cropping in Android (apart from centerCrop) natively?
Replace your ImageView with ProfileImageView and enjoy the view :)
public class ProfileImageView extends ImageView {
private Bitmap bm;
public ProfileImageView(Context context, AttributeSet attrs) {
super(context, attrs);
bm = null;
}
#Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
if (bm != null) {
setImageBitmap(bm);
bm = null;
}
}
#Override
public void setImageBitmap(Bitmap bm) {
int viewWidth = getWidth();
int viewHeight = getHeight();
if (viewWidth == 0 || viewHeight == 0) {
this.bm = bm;
return;
}
setScaleType(ScaleType.MATRIX);
Matrix m = getImageMatrix();
m.reset();
int min = Math.min(bm.getWidth(), bm.getHeight());
int cut;
if (bm.getWidth() > viewWidth && bm.getWidth() > bm.getHeight()) {
cut = Math.round((bm.getWidth() - viewWidth) / 2.f);
} else {
cut = 0;
}
RectF drawableRect = new RectF(cut, 0, min - cut, min);
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
m.setRectToRect(drawableRect, viewRect, Matrix.ScaleToFit.START);
setImageMatrix(m);
super.setImageBitmap(bm);
}
}
I'm using Glide with CircleTransform to have a circular image into this ImageView.
The ImageView has wrap_content properties however, the ImageView doesn't fit the width of the CircleTransformed Image.
Here is my code :
My image loading :
int itemSizeInDp = (int) mContext.getResources().getDimension(R.dimen.spacing_social);
int itemSizeInPx = MetricsHelper.convertDpToPx(mContext, itemSizeInDp);
Glide.with(mContext)
.load(mSocialPhotos.get(position))
.transform(new CircleTransform(mContext))
.override(itemSizeInPx, itemSizeInPx)
.into(holder.mSocialPhoto);
My CircleTransform class :
public class CircleTransform extends BitmapTransformation {
public CircleTransform(Context context) {
super(context);
Log.d("photo", "transform");
}
#Override
protected Bitmap transform(BitmapPool pool, Bitmap source, int outWidth, int outHeight) {
return ImageUtils.getCircularBitmapImage(source);
}
#Override
public String getId() {
return "Glide_Circle_Transformation";
}}
public class ImageUtils {
public static Bitmap getCircularBitmapImage(Bitmap source) {
int size = Math.min(source.getWidth(), source.getHeight());
int x = (source.getWidth() - size) / 2;
int y = (source.getHeight() - size) / 2;
Bitmap squaredBitmap = Bitmap.createBitmap(source, x, y, size, size);
if (squaredBitmap != source) {
source.recycle();
}
Bitmap bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
Paint paint = new Paint();
BitmapShader shader = new BitmapShader(squaredBitmap, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP);
paint.setShader(shader);
paint.setAntiAlias(true);
float r = size / 2f;
canvas.drawCircle(r, r, r, paint);
squaredBitmap.recycle();
return bitmap;
}}
and the image view :
is there a way to make my imageview fit the circle width ?
EDIT:
I can directly set the ImageView's LayoutParams like below but I think there is definitely a more elegant way to do this.
holder.mSocialPhoto.getLayoutParams().height = itemSizeInPx;
holder.mSocialPhoto.getLayoutParams().width = itemSizeInPx;
Since I haven't found a better way to do this,
holder.mSocialPhoto.getLayoutParams().height = itemSizeInPx;
holder.mSocialPhoto.getLayoutParams().width = itemSizeInPx;
Works just fine.
i am currently using Universal Image Loader 1.9.3 and initialize it as,
DisplayImageOptions defaultOptions = new DisplayImageOptions.Builder().displayer(new RoundedBitmapDisplayer(100)).cacheOnDisc().build();
ImageLoaderConfiguration.Builder builder = new ImageLoaderConfiguration.Builder(Register.this).defaultDisplayImageOptions(defaultOptions).memoryCache(new WeakMemoryCache());
ImageLoaderConfiguration config = builder.build();
imageLoader2 = ImageLoader.getInstance();
imageLoader2.init(config);
Here i have used RoundedBitmapDisplayer because i want image as round shape and i have set the property of image view in xml file as android:scaleType="centerCrop", so it must have result as center crop image but it didn't give center crop image.. images are stretched even gave center crop....
Yeah, it is mentioned that it always keep the aspect ratio, where changing scaletype property on xml wont work... use a coded crop instead
public static Bitmap toCropcenterfitoriginal(Bitmap srcBmp) {
Bitmap dstBmp = ThumbnailUtils.extractThumbnail(srcBmp,
srcBmp.getWidth() / 2, srcBmp.getWidth() / 3);
;
return dstBmp;
}
you can change the RoundedDrawable in the RoundedBitmapDisplayer with:
public static class RoundedDrawable extends Drawable {
protected final float cornerRadius;
protected final int margin;
protected RectF mRect = new RectF(),
mBitmapRect;
protected final BitmapShader bitmapShader;
protected final Paint paint;
protected Bitmap mBitmap;
public RoundedDrawable(Bitmap bitmap, int cornerRadius, int margin) {
this.cornerRadius = cornerRadius;
this.margin = margin;
mBitmap = bitmap;
bitmapShader = new BitmapShader(bitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
mBitmapRect = new RectF(margin, margin, bitmap.getWidth() - margin, bitmap.getHeight() - margin);
paint = new Paint();
paint.setAntiAlias(true);
paint.setShader(bitmapShader);
}
#Override
protected void onBoundsChange(Rect bounds) {
super.onBoundsChange(bounds);
mRect.set(margin, margin, bounds.width() - margin, bounds.height() - margin);
// Resize the original bitmap to fit the new bound
Matrix shaderMatrix = new Matrix();
// shaderMatrix.setRectToRect(mBitmapRect, mRect, Matrix.ScaleToFit.FILL);
int width = bounds.right - bounds.left;
int height = bounds.bottom - bounds.top;
float scale = width * 1.0f / mBitmap.getWidth();
// 如果根据宽度缩放后，高度小于targetHeight
if (scale * mBitmap.getHeight() < height) {
scale = height * 1.0f / mBitmap.getHeight();
}
int outWidth = Math.round(scale * mBitmap.getWidth());
int outHeight = Math.round(scale * mBitmap.getHeight());
shaderMatrix.postScale(scale, scale);
int left = 0;
int top = 0;
if (outWidth == width) {
top = (outHeight - height) * -1 / 2;
}
else {
left = (outWidth - width) * -1 / 2;
}
shaderMatrix.postTranslate(left, top);
bitmapShader.setLocalMatrix(shaderMatrix);
}
#Override
public void draw(Canvas canvas) {
canvas.drawRoundRect(mRect, cornerRadius, cornerRadius, paint);
}
#Override
public int getOpacity() {
return PixelFormat.TRANSLUCENT;
}
#Override
public void setAlpha(int alpha) {
paint.setAlpha(alpha);
}
#Override
public void setColorFilter(ColorFilter cf) {
paint.setColorFilter(cf);
}
}
then you can find your pic show in CenterCrop and rounded corner.
you can also check my github for detail: https://github.com/417704684/RoundCornerDrawable
This seems to be an open issue in Universal Image Loader. The work around that i can suggest for this is, load the image bitmap and then centercrop and corner round the bitmap as needed. Here is the code sample.
BaseActivity.imageLoader.loadImage(mUrl, mOptions, new ImageLoadingListener()
{
#Override
public void onLoadingStarted(String imageUri, View view) {
}
#Override
public void onLoadingFailed(String imageUri, View view, FailReason failReason)
{
}
#Override
public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage)
{
if (loadedImage != null)
{
Bitmap croppedBitmap = ThumbnailUtils.extractThumbnail(loadedImage, HIQUtil.dpToPixel(getActivity(), 295), HIQUtil.dpToPixel(getActivity(), 211));
Bitmap roundedCropped = getRoundedCornerBitmap(croppedBitmap, 5);
imageView.setImageBitmap(roundedCropped);
}
}
#Override
public void onLoadingCancelled(String imageUri, View view) {
}
});
To get rounded corner bitmap, you can us this method:
public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, int pixels) {
Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap
.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
final RectF rectF = new RectF(rect);
final float roundPx = pixels;
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
return output;
}
Make sure to set
adjustViewBounds ="true"
in your imageview
I am trying to implement the CoverFlow. Using the same code in other devices looks perfect but in SONY S Tablet its not looking propering. I attached below screenshot of SONY S. I have used Android 4.0 in my demo.
I am not able to understand the problem. Is is device oriented or is any problem in my code?
If anyone can understand then please let me know.
Thanks in advance.
My code below
public class CoverFlowExample extends Activity
{
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
CoverFlow coverFlow;
coverFlow = new CoverFlow(this);
coverFlow.setAdapter(new ImageAdapter(this));
ImageAdapter coverImageAdapter = new ImageAdapter(this);
coverImageAdapter.createReflectedImages();
coverFlow.setAdapter(coverImageAdapter);
coverFlow.setSpacing(-50);
coverFlow.setSelection(8, true);
setContentView(coverFlow);
//Use this if you want to use XML layout file
//setContentView(R.layout.main);
//coverFlow = (CoverFlow) findViewById(R.id.coverflow);
}
public class ImageAdapter extends BaseAdapter
{
int mGalleryItemBackground;
private Context mContext;
// private FileInputStream fis;
private Integer[] mImageIds =
{
R.drawable.kasabian_kasabian,
R.drawable.starssailor_silence_is_easy,
R.drawable.killers_day_and_age,
R.drawable.garbage_bleed_like_me,
R.drawable.death_cub_for_cutie_the_photo_album,
R.drawable.kasabian_kasabian,
R.drawable.massive_attack_collected,
R.drawable.muse_the_resistance,
R.drawable.starssailor_silence_is_easy
};
private ImageView[] mImages;
public ImageAdapter(Context c)
{
mContext = c;
mImages = new ImageView[mImageIds.length];
}
public boolean createReflectedImages()
{
//The gap we want between the reflection and the original image
final int reflectionGap = 4;
int index = 0;
for (int imageId : mImageIds)
{
Bitmap originalImage = BitmapFactory.decodeResource(getResources(),
imageId);
int width = originalImage.getWidth();
int height = originalImage.getHeight();
//This will not scale but will flip on the Y axis
Matrix matrix = new Matrix();
matrix.preScale(1, -1);
//Create a Bitmap with the flip matrix applied to it.
//We only want the bottom half of the image
Bitmap reflectionImage = Bitmap.createBitmap(originalImage, 0, height/2, width, height/2, matrix, false);
//Create a new bitmap with same width but taller to fit reflection
Bitmap bitmapWithReflection = Bitmap.createBitmap(width
, (height + height/2), Config.ARGB_8888);
//Create a new Canvas with the bitmap that's big enough for
//the image plus gap plus reflection
Canvas canvas = new Canvas(bitmapWithReflection);
//Draw in the original image
canvas.drawBitmap(originalImage, 0, 0, null);
//Draw in the gap
Paint deafaultPaint = new Paint();
canvas.drawRect(0, height, width, height + reflectionGap, deafaultPaint);
//Draw in the reflection
canvas.drawBitmap(reflectionImage,0, height + reflectionGap, null);
//Create a shader that is a linear gradient that covers the reflection
Paint paint = new Paint();
LinearGradient shader = new LinearGradient(0, originalImage.getHeight(), 0,
bitmapWithReflection.getHeight() + reflectionGap, 0x70ffffff, 0x00ffffff,
TileMode.CLAMP);
//Set the paint to use this shader (linear gradient)
paint.setShader(shader);
//Set the Transfer mode to be porter duff and destination in
paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));
//Draw a rectangle using the paint with our linear gradient
canvas.drawRect(0, height, width,
bitmapWithReflection.getHeight() + reflectionGap, paint);
ImageView imageView = new ImageView(mContext);
imageView.setImageBitmap(bitmapWithReflection);
imageView.setLayoutParams(new CoverFlow.LayoutParams(120, 180));
imageView.setScaleType(ScaleType.MATRIX);
mImages[index++] = imageView;
}
return true;
}
public int getCount() {
return mImageIds.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
//Use this code if you want to load from resources
//ImageView i = new ImageView(mContext);
//i.setImageResource(mImageIds[position]);
//i.setLayoutParams(new CoverFlow.LayoutParams(130, 130));
//i.setScaleType(ImageView.ScaleType.MATRIX);
//return i;
return mImages[position];
}
/** Returns the size (0.0f to 1.0f) of the views
* depending on the 'offset' to the center. */
public float getScale(boolean focused, int offset) {
/* Formula: 1 / (2 ^ offset) */
return Math.max(0, 1.0f / (float)Math.pow(2, Math.abs(offset)));
}
}
}
Output in SONY S
you need to call child.invalidate() in offsetChildrenLeftAndRight() method. Or where you are setting your imageview to center child call this method.
i wish to have an android gallery that will host images of varying aspect ratios. what i'd like is something like CENTER_CROP for the images in the gallery. however, when i set the image scale type to this, the images overrun the gallery image border.
of course, FIT_XY results in squished / flattened images. CENTER results in horizontal or vertical black space inside the gallery image border.
any ideas how to accomplish this? every example i can find uses FIT_XY with fixed size images. i suppose i could crop the images myself but i'd rather not.
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView iv = (ImageView) convertView;
if (iv == null) {
iv = new ImageView(context);
iv.setScaleType(ImageView.ScaleType.FIT_XY);
iv.setBackgroundResource(galleryItemBackground);
iv.setLayoutParams(new Gallery.LayoutParams(200, 200));
}
InputStream is;
try {
is = getInputStream(position);
} catch (IOException ioe) {
// TODO?
throw new RuntimeException(ioe);
}
Bitmap bm = BitmapFactory.decodeStream(is);
iv.setImageBitmap(bm);
/*
* if (bitmaps[position] != null) { bitmaps[position].recycle();
* bitmaps[position] = null; } bitmaps[position] = bm;
*/
return iv;
}
I had the same problem as you and looking at ScaleType documentation I found it could be done using ScaleType.MATRIX, for example:
int w = 1000;
int h = 1000;
Paint p = new Paint();
p.setShader(new LinearGradient(0, 0, w, h, Color.BLACK, Color.RED, Shader.TileMode.CLAMP));
Bitmap bmp = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
Canvas g = new Canvas(bmp);
g.drawRect(new Rect(0, 0, w, h), p);
ImageView i3 = new ImageView(context);
i3.setImageBitmap(bmp);
i3.setScaleType(ScaleType.MATRIX);
int viewWidth = 300;
int viewHeight = 300;
Matrix matrix = new Matrix();
matrix.postScale(bmp.getWidth() / viewWidth, bmp.getHeight() / viewHeight, bmp.getWidth() / 2, bmp.getHeight() / 2);
i3.setImageMatrix(matrix);
LayoutParams lp2 = new LayoutParams(viewWidth, viewHeight);
lp2.leftMargin = 100;
lp2.topMargin = 400;
lp2.gravity = 0;
this.addView(i3, lp2);
This solution complicates things a little bit too much though. If you want to scroll and zoom the ImageView you need to use matrix scaling as well. So I'd be interested in knowing any possible alternative.
For this kind of tasks I use this simple class. It fits height or width scaling the image properly (it depends on which is the smaller dimension) . After this operation it centers the image in the ImageView bounds.
public class FixedCenterCrop extends ImageView {
public FixedCenterCrop(Context context) {
super(context);
setScaleType(ScaleType.MATRIX);
}
public FixedCenterCrop(Context context, AttributeSet attrs) {
super(context, attrs);
setScaleType(ScaleType.MATRIX);
}
public FixedCenterCrop(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
setScaleType(ScaleType.MATRIX);
}
#Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
recomputeImgMatrix();
}
#Override
protected boolean setFrame(int l, int t, int r, int b) {
recomputeImgMatrix();
return super.setFrame(l, t, r, b);
}
private void recomputeImgMatrix() {
final Matrix matrix = getImageMatrix();
float scale;
final int viewWidth = getWidth() - getPaddingLeft() - getPaddingRight();
final int viewHeight = getHeight() - getPaddingTop() - getPaddingBottom();
final int drawableWidth = getDrawable().getIntrinsicWidth();
final int drawableHeight = getDrawable().getIntrinsicHeight();
if (drawableWidth * viewHeight > drawableHeight * viewWidth) {
scale = (float) viewHeight / (float) drawableHeight;
} else {
scale = (float) viewWidth / (float) drawableWidth;
}
matrix.setScale(scale, scale);
matrix.postTranslate((viewWidth - drawableWidth * scale) / 2, (viewHeight - drawableHeight*scale)/2);
setImageMatrix(matrix);
}
}
I ended up just trimming the bitmap to a square myself, as,
Bitmap bm = BitmapFactory.decodeStream(is);
// make it square
int w = bm.getWidth();
int h = bm.getHeight();
if (w > h) {
// trim width
bm = Bitmap.createBitmap(bm, (w - h) / 2, 0, h, h);
} else {
bm = Bitmap.createBitmap(bm, 0, (h - w) / 2, w, w);
}