public class MainActivity extends Activity {   Button mButton;      @Override      public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.main);          mButton = (Button) findViewById(R.id.button);          mButton.setOnClickListener(new View.OnClickListener() {           @Override             public void onClick(View v) {               GetandSaveCurrentImage();            }          });      }   protected void GetandSaveCurrentImage() {        WindowManager widowManager = getWindowManager();        Display display = widowManager.getDefaultDisplay();        int w = display.getWidth();        int h = display.getHeight();             Bitmap Bmp = Bitmap.createBitmap(w,h,Config.ARGB_8888);        View decorview = this.getWindow().getDecorView();        decorview.setDrawingCacheEnabled(true);        Bmp = decorview.getDrawingCache();    try {        String SavePath = getSDCardPath() + "/ScreenImage";        File path = new File(SavePath);        String filepath = SavePath + "/Screen_1.jpg";        File file = new File(filepath);        if(!path.exists()){          path.mkdirs();        }        if(!file.exists()){           file.createNewFile();         }         FileOutputStream fos = null;          fos = new FileOutputStream(file);        if(null != fos){           Bmp.compress(Bitmap.CompressFormat.PNG, 90, fos);           fos.flush();           fos.close();           Log.i("LW", "截屏文件已保存至SDCard/ScreenImage/下");         }    } catch (Exception e) {         e.printStackTrace();    }   }   private String getSDCardPath() {    File sdCardDir = null;    boolean sdcardExit = Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);    if(sdcardExit){     sdCardDir = Environment.getExternalStorageDirectory();    }    return sdCardDir.toString();   }  }