Android screenshot code note

Static

View code

 Import  Java. Io. filenotfoundexception;  Import  Java. Io. fileoutputstream;  Import  Java. Io. ioexception;  Import  Android. App. activity;  Import  Android. Graphics. Bitmap;  Import  Android. Graphics. rect;  Import Android. Media. mediametadataretriever;  Import  Android. util. log;  Import  Android. View. view;  Public   Class  Screenshot {  //  Obtains screenshots of a specified activity and saves them to PNG files.      Static  Bitmap takescreenshot (activity) {log. I ( "Tag", "tackscreenshot" );  // View is the view you need View view = Activity. getwindow (). getdecorview (); view. setdrawingcacheenabled (  True  ); View. builddrawingcache (); bitmap B1 = View. getdrawingcache ();  //  Retrieve the height of the status bar Rect frame = New  Rect (); activity. getwindow (). getdecorview (). getwindowvisibledisplayframe (FRAME );  Int Statusbarheight = Frame. Top; log. I ( "Tag", "statusbarheight =" + Statusbarheight );  //  Get screen length and height          Int Width = Activity. getwindowmanager (). getdefadisplay display (). getwidth ();  Int Height = Activity. getwindowmanager (). getdefadisplay display (). getheight ();  //  Remove question bar  //  Bitmap B = bitmap. createbitmap (B1, 0, 25,320,455 ); Bitmap B = bitmap. createbitmap (B1, 0, Statusbarheight, width, height - Statusbarheight); view. destroydrawingcache ();  Return  B ;}  //  Save to sdcard      Private   Static   Void  Savepic (Bitmap B, string strfilename) {fileoutputstream fos = Null  ;  Try {Log. I ( "Tag", "Start savepic" ); Fos = New  Fileoutputstream (strfilename); log. I ( "Tag", "strfilename =" + Strfilename );  If ( Null ! = FOS) {B. Compress (bitmap. compressformat. PNG, 90 , FOS); FOS. Flush (); FOS. Close (); log. I ( "Tag", "Save pic" );}} Catch  (Filenotfoundexception e) {e. printstacktrace ();}  Catch  (Ioexception e) {e. printstacktrace ();}}  Public   Static   Void  Shoot (Activity A, string B ){  //  Screenshot. savepic (screenshot. takescreenshot (a), "sdcard/xx.png "); Log. I ("tag", "shot" ); Bitmap bitmap =Screenshot. takescreenshot (a); screenshot. savepic (bitmap, B );}} 

 

Dynamic

View code

     Public  Bitmap createvideothumbnail (string filepath) {Bitmap bitmap = Null  ; Android. Media. mediametadataretriever retriever = New  Android. Media. mediametadataretriever ();  Try { //  Mode_capture_frame_only //  Retriever  //  . Setmode (Android. Media. mediametadataretriever. mode_capture_frame_only );  //  Retriever. setmode (mediametadataretriever. mode_capture_frame_only );  Retriever. setdatasource (filepath );  //  Bitmap = retriever. captureframe (); String timestring = Retriever. extractmetadata (mediametadataretriever. metadata_key_duration );  Long Time = long. parselong (Time string) * 1000 ; Log. I ( "Tag", "time =" + Time); bitmap = Retriever. getframeattime (time * 31/160 ); //  Frame selection by video length ratio } Catch  (Illegalargumentexception ex ){  //  Assume this is a temporary upt video file } Catch  (Runtimeexception ex ){  // Assume this is a temporary upt video file. } Finally  {  Try  {Retriever. Release ();}  Catch  (Runtimeexception ex ){  //  Ignore failures while cleaning up.  }}  Return  Bitmap ;}