vpaint

*/class myview extends view {myview (context) {super (context);} paint vpaint = new paint (); // paint style object int I = 0; // arc angle @ overrideprotected void ondraw (canvas) {super. ondraw (canvas); log. D ("mark", "This run ondraw ()" + (times ++) + "times! "); // Set the drawing style vpaint. setcolor (0xff00ffff); // paint color vpaint. setantialias (t

View programming (2): invalidate () in the blog, I talked about the loading time of the ondraw () method of the view and the role of the invalidate () method. In fact, it is far less simple than you think. To write this blog, let's talk about it with examples. Package mark. zhang; import android. app. activity; import android. content. context; import android. graphics. canvas; import android. graphics. paint; import android. graphics. rectf; import android. OS. bundle; import android. util. lo

is argb[i] = (number (Argb[i] 0X00FFFFFF) Set the A-channel of the pixel at point I to 0, and then (numThe second way of thinking:Example code: Class Drawcanvas extends View {public Drawcanvas (context context) { super (context); } @Override protected void OnDraw (canvas canvas) { super.ondraw (canvas); Get resource picture of Bitmap Bitmap vbitmap = Bitmapfactory.decoderesource (This.getresources ()

] = (number The second approach: Sample Code: Class drawCanvas extends View {public drawCanvas (Context context) {super (context) ;}@ Override protected void onDraw (Canvas canvas) {super. onDraw (canvas); // obtain the Bitmap of the Resource image. Bitmap vBitmap = BitmapFactory. decodeResource (this. getResources (), R. drawable. icon); // create the Paint object Paint vPaint = new Paint (); vPaint. set

Android To set bitmap transparency. Java program example: Public class helloworld extends activity {@ override public void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (New drawcanvas (this);} class drawcanvas extends view {public drawcanvas (context) {super (context );} @ override protected void ondraw (canvas) {super. ondraw (canvas); // obtain the bitmap of the resource image. Bitmap vbitmap = bitmapfactory. decoder Esource (this. getresources ()

available, fixed the link two errors. The range of number is 0-100,0, which means that it is completely transparent and completely invisible. One of the most critical steps you can see is argb[i] = (number The second way of thinking:Example code: classDrawcanvas extends View { PublicDrawcanvas (Context context) {super (context); } @Overrideprotected voidOnDraw (canvas canvas) {super.ondraw (canvas); //get the bitmap of resource picturesBitmap Vbitmap = Bitmapfactory.decoderesource ( This. Ge

1, Android Image transparency processing: 0-100 To set the transparency from: http://blog.csdn.net/yanzi1225627/article/details/29661935Way One Public StaticBitmap Gettransparentbitmap (Bitmap sourceimg,intNumber ) { int[] Argb =New int[Sourceimg.getwidth () *sourceimg.getheight ()]; Sourceimg.getpixels (ARGB,0, Sourceimg.getwidth (), 0, 0, sourceimg. GetWidth (), Sourceimg.getheight ());//get the ARGB value of the picture Number= number * 255/100; for(inti = 0; i ) {Argb[i]= (number );

, Xyz,tiff. I chose the binary format of the grid-registered version. Download: Http://www.ngdc.noaa.gov/mgg/global/relief/ETOPO1/data/ice_surface/grid_registered/binary/etopo1_ice_g_i2.zipextract. Bin is a binary network file,. HDR is the header filecopy the. bin to/usr/local/gmt-4.5.9/share/dbase:sudo cp etopo1_ice_g_i2.bin/usr/local/gmt-4.5.9/share/dbaseModify Grdraster.info:9 "ETOPO1 Ice Surface" "M"-r-180/180/-90/90-i1m GG I 1 0-32768 etopo1_ice_g_i2.bin LSimilarly, for bedrock version of g