转换TextView-> Bitmap-> ImageView,没有任何显示

TextView textView = findViewById(R.id.textView);
ImageView imageView = findViewById(R.id.imageView);

// 获取TextView的内容
String text = textView.getText().toString();

// 创建一个空的Bitmap对象
Bitmap bitmap = Bitmap.createBitmap(textView.getWidth(), textView.getHeight(), Bitmap.Config.ARGB_8888);

// 创建一个Canvas对象
Canvas canvas = new Canvas(bitmap);

// 设置画笔属性
Paint paint = new Paint();
paint.setColor(Color.BLACK);
paint.setTextSize(textView.getTextSize());

// 绘制文本
canvas.drawText(text, 0, textView.getHeight() / 2, paint);

// 将Bitmap显示在ImageView上
imageView.setImageBitmap(bitmap);