DevMemo

check   app.gradle buildToolsVersion <-> SDKVersion

org.apache.http is deprecated. > HttpUrlConnection - 301 error } else if ( responseCode == HttpURLConnection . HTTP_MOVED_PERM || responseCode == HttpURLConnection . HTTP_MOVED_TEMP ){ // redirectionのため String redirectedUrl = connection . getHeaderField ( "Location" ); // do connect one more with redirectedUrl } http://love4rh.blogspot.com/2013/05/httpurlconnection-301-302.html

float scale = getContext().getResources().getDisplayMetrics(). density ;     ref  https://stackoverflow.com/questions/5255184

textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 20);       ref https://stackoverflow.com/questions/2069810