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2014/10/16 ¤W¤È 08:20:55
android Programming Glossary: originalwidthResizing ImageView to fit to aspect ratio http://stackoverflow.com/questions/12400113/resizing-imageview-to-fit-to-aspect-ratio Gets the downloaded image dimensions int originalWidth loadedImage.getWidth int originalHeight loadedImage.getHeight.. the new dimensions float scale float intendedWidth originalWidth int newHeight int Math.round originalHeight scale Resizes mImageView...
How to downscale images correctly? http://stackoverflow.com/questions/16408505/how-to-downscale-images-correctly options int originalHeight options.outHeight int originalWidth options.outWidth Calculate your sampleSize based on the requiredWidth.. Calculate your sampleSize based on the requiredWidth and originalWidth For e.g you want the width to stay consistent at 500dp int requiredWidth.. getResources .getDisplayMetrics .density int sampleSize originalWidth requiredWidth If the original image is smaller than required..
How do I scale a streaming bitmap in-place without reading the whole image first? http://stackoverflow.com/questions/7051025/how-do-i-scale-a-streaming-bitmap-in-place-without-reading-the-whole-image-first is null decodeBoundsOptions is.reset final int originalWidth decodeBoundsOptions.outWidth final int originalHeight decodeBoundsOptions.outHeight.. decodeBitmapOptions.inSampleSize Math.max 1 Math.min originalWidth minimumDesiredBitmapWidth originalHeight minimumDesiredBitmapHeight..
http://stackoverflow.com/questions/7058507/fixed-aspect-ratio-view onMeasure int widthMeasureSpec int heightMeasureSpec int originalWidth MeasureSpec.getSize widthMeasureSpec int originalHeight MeasureSpec.getSize.. MeasureSpec.getSize heightMeasureSpec int calculatedHeight originalWidth mAspectRatioHeight mAspectRatioWidth int finalWidth finalHeight.. finalHeight originalHeight else finalWidth originalWidth finalHeight calculatedHeight super.onMeasure MeasureSpec.makeMeasureSpec..
Resizing ImageView to fit to aspect ratio http://stackoverflow.com/questions/12400113/resizing-imageview-to-fit-to-aspect-ratio url Gets the width you want it to be intendedWidth mImageView.getWidth Gets the downloaded image dimensions int originalWidth loadedImage.getWidth int originalHeight loadedImage.getHeight Calculates the new dimensions float scale float intendedWidth.. int originalHeight loadedImage.getHeight Calculates the new dimensions float scale float intendedWidth originalWidth int newHeight int Math.round originalHeight scale Resizes mImageView. Change FrameLayout to whatever layout mImageView is..
How to downscale images correctly? http://stackoverflow.com/questions/16408505/how-to-downscale-images-correctly true Bitmap map BitmapFactory.decodeFile file.getAbsolutePath options int originalHeight options.outHeight int originalWidth options.outWidth Calculate your sampleSize based on the requiredWidth and originalWidth For e.g you want the width to stay.. options.outHeight int originalWidth options.outWidth Calculate your sampleSize based on the requiredWidth and originalWidth For e.g you want the width to stay consistent at 500dp int requiredWidth 500 getResources .getDisplayMetrics .density int.. the width to stay consistent at 500dp int requiredWidth 500 getResources .getDisplayMetrics .density int sampleSize originalWidth requiredWidth If the original image is smaller than required don't sample if sampleSize 1 sampleSize 1 options.inSampleSize..
How do I scale a streaming bitmap in-place without reading the whole image first? http://stackoverflow.com/questions/7051025/how-do-i-scale-a-streaming-bitmap-in-place-without-reading-the-whole-image-first but 8k is insufficient for some jpgs BitmapFactory.decodeStream is null decodeBoundsOptions is.reset final int originalWidth decodeBoundsOptions.outWidth final int originalHeight decodeBoundsOptions.outHeight inSampleSize prefers multiples of 2.. prefers multiples of 2 but we prefer to prioritize memory savings decodeBitmapOptions.inSampleSize Math.max 1 Math.min originalWidth minimumDesiredBitmapWidth originalHeight minimumDesiredBitmapHeight return BitmapFactory.decodeStream is null decodeBitmapOptions..
http://stackoverflow.com/questions/7058507/fixed-aspect-ratio-view 3 a.recycle overrides @Override protected void onMeasure int widthMeasureSpec int heightMeasureSpec int originalWidth MeasureSpec.getSize widthMeasureSpec int originalHeight MeasureSpec.getSize heightMeasureSpec int calculatedHeight originalWidth.. MeasureSpec.getSize widthMeasureSpec int originalHeight MeasureSpec.getSize heightMeasureSpec int calculatedHeight originalWidth mAspectRatioHeight mAspectRatioWidth int finalWidth finalHeight if calculatedHeight originalHeight finalWidth originalHeight.. finalWidth originalHeight mAspectRatioWidth mAspectRatioHeight finalHeight originalHeight else finalWidth originalWidth finalHeight calculatedHeight super.onMeasure MeasureSpec.makeMeasureSpec finalWidth MeasureSpec.EXACTLY MeasureSpec.makeMeasureSpec..
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