Android(安卓)长按识别图中二维码

基于 Zing, 初学android 代码质量可能不高

           bigImage.setOnLongClickListener(new View.OnLongClickListener() {                @Override                public boolean onLongClick(View viewm) {                    Bitmap obmp = ((BitmapDrawable) (bigImage).getDrawable()).getBitmap();                    int width = obmp.getWidth();                    int height = obmp.getHeight();                    int[] data = new int[width * height];                    obmp.getPixels(data, 0, width, 0, 0, width, height);                    RGBLuminanceSource source = new RGBLuminanceSource(width, height, data);                    BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));                    QRCodeReader reader = new QRCodeReader();                    Result re = null;                    try {                        re = reader.decode(bitmap1);                    } catch (NotFoundException e) {                        e.printStackTrace();                    } catch (ChecksumException e) {                        e.printStackTrace();                    } catch (FormatException e) {                        e.printStackTrace();                    }                    if (re == null) {                        showAlert(obmp);                    } else {                        showSelectAlert(obmp, re.getText());                    }                    return false;                }            });

    private void showAlert(final Bitmap bitmap) {        AlertDialog.Builder builder = new AlertDialog.Builder(this);        builder.setMessage("保存图片")                .setCancelable(false)                .setPositiveButton("确定", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialogInterfacem, int i) {                        saveImageToGallery(bitmap);                    }                })                .setNegativeButton("取消", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialogInterfacem, int i) {                    }                });        builder.show();    }    private void showSelectAlert(final Bitmap bitmap, final String url) {        AlertDialog.Builder builder = new AlertDialog.Builder(this);        builder.setTitle("请选择");        String str[] = {"保存图片", "扫二维码"};        builder.setItems(str, new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialogInterfacem, int i) {                switch (i) {                    case 0: {                        saveImageToGallery(bitmap);                    }                    break;                    case 1: {                        Intent n = new Intent(EnlargeimagevActivity.this, DetailActivity.class);                        n.putExtra(DetailActivity.BUNDLE_KEY_DISPLAY_TYPE, DetailActivity.WEBVIEW_DETAIL);                        n.putExtra(DetailwebFragment.WEB_URL, url);                        startActivity(n);                    }                    break;                }            }        });        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialogInterfacem, int i) {            }        });        builder.show();    }

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