Brian Kurzius bkurzius
bkurzius
/ gist:a4d165683a57742ad4c9
Created
April 17, 2015 21:16
Android ScrollView -- fade a view in or out depending on the vertical scroll postion
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| mScrollView.getViewTreeObserver().addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener() { | |
| @Override | |
| public void onScrollChanged() { | |
| // the scrollposition that the fade will start | |
| int mScrollThreshold = 100; | |
| // how fast the view will fade with the scroll -- use multiples of 10 | |
| int mScrollVariance = 40; | |
| int scrollY = mScrollView.getScrollY(); | |
| // if the difference between the scrollthreshold is +/-mScrollVariance, show the view accordingly | |
| float newAlpha = 0; |
bkurzius
/ gist:11d7825138c0a20da0d5
Created
April 16, 2015 18:41
android listener when a layout draws
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| mProgressBar.getViewTreeObserver() | |
| .addOnGlobalLayoutListener( | |
| new OnGlobalLayoutListener() { | |
| @Override | |
| public void onGlobalLayout() { | |
| //... do code here | |
| } | |
| }); |
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| final Dialog dialog = new Dialog(this); | |
| // remove the title | |
| dialog.requestWindowFeature(Window.FEATURE_NO_TITLE); | |
| // set the layout | |
| dialog.setContentView(R.layout.dialog_series_info); | |
| // do whatever you need to with the data | |
| TextView title = (TextView)dialog.findViewById(R.id.series_title); | |
| title.setText(mSeriesTitle); | |
| dialog.show(); |
bkurzius
/ CircularNetworkImageView
Last active
September 21, 2020 16:18
Circular NetworkImageView for use with Volley. Creates a circular bitmap and uses whichever dimension is smaller to determine the radius. Also constrains the circle to the leftmost part of that image. Used in the same way as the Volley NetworkImageView, in both code and xml. Of course you'll need to include the Volley Library in you app too.
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| import android.content.Context; | |
| import android.graphics.Bitmap; | |
| import android.graphics.Canvas; | |
| import android.graphics.Paint; | |
| import android.graphics.PorterDuffXfermode; | |
| import android.graphics.Rect; | |
| import android.graphics.RectF; | |
| import android.graphics.Bitmap.Config; | |
| import android.graphics.PorterDuff.Mode; | |
| import android.graphics.drawable.BitmapDrawable; |