小编Vaz*_*ias的帖子

我想通过Android应用程序发布故事,我使用下面的代码.

    private static final List<String> PERMISSIONS = Arrays.asList("publish_actions");
    private static final String PENDING_PUBLISH_KEY = "pendingPublishReauthorization";
    private boolean pendingPublishReauthorization = false;
    private UiLifecycleHelper uiHelper;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        uiHelper = new UiLifecycleHelper(XXActivity.this, callback);
        uiHelper.onCreate(savedInstanceState);
        setContentView(R.layout.layoutAct);
            ...
            ...
            ...
        publishAddCardStory();  
            ...         
    }

    @Override
    public void onResume() {
        super.onResume();
        Session session = Session.getActiveSession();
        if (session != null && (session.isOpened() || session.isClosed())) {
            onSessionStateChange(session, session.getState(), null);
        }
        uiHelper.onResume();
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, …

我使用zxing库生成二维码。当我生成 QR 时，它工作正常，但在 QR 的左侧和右侧有一个空白区域。如何删除这个空白（制作位图宽度=高度）

这是我生成二维码的代码

    private static final int QR_SIZE = 480;

  public static Bitmap generateQR(String content){
      Bitmap returnBitmap= null;
      try {
        Hashtable<EncodeHintType, ErrorCorrectionLevel> hintMap = new Hashtable<EncodeHintType, ErrorCorrectionLevel>();
        hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
        QRCodeWriter qrCodeWriter = new QRCodeWriter();
        BitMatrix matrix = qrCodeWriter.encode(content, BarcodeFormat.QR_CODE, QR_SIZE, QR_SIZE, hintMap);
        //int width = matrix.getWidth();
        int width = matrix.getHeight();
        int height = matrix.getHeight();
        int[] pixels = new int[width*height];
        for(int y=0; y<height; y++) {
            for(int x=0; x<width; x++) {
                int grey = matrix.get(x, y) ? …