import android.app.Activity;  
    import android.content.Context;  
    import android.graphics.Bitmap;  
    import android.graphics.Rect;  
    import android.util.DisplayMetrics;  
    import android.view.View;  
    import android.view.WindowManager;  
      
    //獲得屏幕相關(guān)的輔助類  
    public class ScreenUtils  
    {  
        private ScreenUtils()  
        {  
            /* cannot be instantiated */  
            throw new UnsupportedOperationException("cannot be instantiated");  
        }  
      
        /** 
         * 獲得屏幕高度 
         *  
         * @param context 
         * @return 
         */  
        public static int getScreenWidth(Context context)  
        {  
            WindowManager wm = (WindowManager) context  
                    .getSystemService(Context.WINDOW_SERVICE);  
            DisplayMetrics outMetrics = new DisplayMetrics();  
            wm.getDefaultDisplay().getMetrics(outMetrics);  
            return outMetrics.widthPixels;  
        }  
      
        /** 
         * 獲得屏幕寬度 
         *  
         * @param context 
         * @return 
         */  
        public static int getScreenHeight(Context context)  
        {  
            WindowManager wm = (WindowManager) context  
                    .getSystemService(Context.WINDOW_SERVICE);  
            DisplayMetrics outMetrics = new DisplayMetrics();  
            wm.getDefaultDisplay().getMetrics(outMetrics);  
            return outMetrics.heightPixels;  
        }  
      
        /** 
         * 獲得狀態(tài)欄的高度 
         *  
         * @param context 
         * @return 
         */  
        public static int getStatusHeight(Context context)  
        {  
      
            int statusHeight = -1;  
            try  
            {  
                Class<?> clazz = Class.forName("com.android.internal.R$dimen");  
                Object object = clazz.newInstance();  
                int height = Integer.parseInt(clazz.getField("status_bar_height")  
                        .get(object).toString());  
                statusHeight = context.getResources().getDimensionPixelSize(height);  
            } catch (Exception e)  
            {  
                e.printStackTrace();  
            }  
            return statusHeight;  
        }  
      
        /** 
         * 獲取當(dāng)前屏幕截圖，包含狀態(tài)欄 
         *  
         * @param activity 
         * @return 
         */  
        public static Bitmap snapShotWithStatusBar(Activity activity)  
        {  
            View view = activity.getWindow().getDecorView();  
            view.setDrawingCacheEnabled(true);  
            view.buildDrawingCache();  
            Bitmap bmp = view.getDrawingCache();  
            int width = getScreenWidth(activity);  
            int height = getScreenHeight(activity);  
            Bitmap bp = null;  
            bp = Bitmap.createBitmap(bmp, 0, 0, width, height);  
            view.destroyDrawingCache();  
            return bp;  
      
        }  
      
        /** 
         * 獲取當(dāng)前屏幕截圖，不包含狀態(tài)欄 
         *  
         * @param activity 
         * @return 
         */  
        public static Bitmap snapShotWithoutStatusBar(Activity activity)  
        {  
            View view = activity.getWindow().getDecorView();  
            view.setDrawingCacheEnabled(true);  
            view.buildDrawingCache();  
            Bitmap bmp = view.getDrawingCache();  
            Rect frame = new Rect();  
            activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);  
            int statusBarHeight = frame.top;  
      
            int width = getScreenWidth(activity);  
            int height = getScreenHeight(activity);  
            Bitmap bp = null;  
            bp = Bitmap.createBitmap(bmp, 0, statusBarHeight, width, height  
                    - statusBarHeight);  
            view.destroyDrawingCache();  
            return bp;  
      
        }  
      
    }  

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