提示框設置爲全屏顯示（包括狀態欄）

public class ViewContentDialog extends BaseDialog implements View.OnClickListener {
    private RelativeLayout rootview_rl;
    private PhotoView content_iv;
    private ImageView ctr_iv;
    boolean isVideo;

    Bitmap videoBitmap;

    public ViewContentDialog(Context context) {
        super(context, R.style.DialogDefaultStyle);
        setBackKeyToDismiss(true);
        isVideo = false;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.dialog_view_content_view);

        getWindow().getDecorView().setPadding(0, 0, 0, 0);
        WindowManager.LayoutParams lp = getWindow().getAttributes();
        lp.width = WindowManager.LayoutParams.MATCH_PARENT;
        lp.height = WindowManager.LayoutParams.MATCH_PARENT;
        getWindow().setAttributes(lp);

        
    }

    /**
     * 獲取網絡視頻第一幀圖片
     *
     * @param filePath
     * @param kind
     * @return
     */
    public static Bitmap createVideoThumbnail(String filePath, int kind) {
        Bitmap bitmap = null;
        MediaMetadataRetriever retriever = new MediaMetadataRetriever();
        try {
            if (filePath.startsWith("http://")
                    || filePath.startsWith("https://")
                    || filePath.startsWith("widevine://")) {
                retriever.setDataSource(filePath, new Hashtable<String, String>());
            } else {
                retriever.setDataSource(filePath);
            }
            bitmap = retriever.getFrameAtTime(0, MediaMetadataRetriever.OPTION_CLOSEST_SYNC); //retriever.getFrameAtTime(-1);
        } catch (IllegalArgumentException ex) {
            // Assume this is a corrupt video file
            ex.printStackTrace();
        } catch (RuntimeException ex) {
            // Assume this is a corrupt video file.
            ex.printStackTrace();
        } finally {
            try {
                retriever.release();
            } catch (RuntimeException ex) {
                // Ignore failures while cleaning up.
                ex.printStackTrace();
            }
        }

        if (bitmap == null) {
            return null;
        }

        if (kind == MediaStore.Images.Thumbnails.MINI_KIND) {//壓縮圖片 開始處
            // Scale down the bitmap if it's too large.
            int width = bitmap.getWidth();
            int height = bitmap.getHeight();
            int max = Math.max(width, height);
            if (max > 512) {
                float scale = 512f / max;
                int w = Math.round(scale * width);
                int h = Math.round(scale * height);
                bitmap = Bitmap.createScaledBitmap(bitmap, w, h, true);
            }//壓縮圖片 結束處
        } else if (kind == MediaStore.Images.Thumbnails.MICRO_KIND) {
            bitmap = ThumbnailUtils.extractThumbnail(bitmap,
                    96,
                    96,
                    ThumbnailUtils.OPTIONS_RECYCLE_INPUT);
        }
        return bitmap;
    }

    @Override
    public void onClick(View v) {
        int id = v.getId();
        if (id == R.id.content_iv) {
            dismiss();

        }
    }
}