StaticLayout.getHeight()
时间: 2024-05-24 13:11:30 浏览: 20
StaticLayout.getHeight() is a method in Android that returns the total height of the layout. StaticLayout is a class that is used to create a text layout that does not change. This method is used to get the height of the text layout so that it can be used to set the height of the view that displays the text layout. The height returned by this method is the total height of all the lines of text in the layout.
相关问题
如何将Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.logo); Bitmap circleBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(circleBitmap); Paint paint = new Paint(); paint.setAntiAlias(true); canvas.drawCircle(bitmap.getWidth() / 2, bitmap.getHeight() / 2, Math.min(bitmap.getWidth(), bitmap.getHeight()) / 2, paint); paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN)); canvas.drawBitmap(bitmap, 0, 0, paint); canvas.drawBitmap(circleBitmap, 0, 0, null);返回的bitmap对象放入imageview
中显示?
答:你可以使用以下代码将bitmap对象放入ImageView中显示:
```java
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.logo);
Bitmap circleBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(circleBitmap);
Paint paint = new Paint();
paint.setAntiAlias(true);
canvas.drawCircle(bitmap.getWidth() / 2, bitmap.getHeight() / 2, Math.min(bitmap.getWidth(), bitmap.getHeight()) / 2, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(bitmap, 0, 0, paint);
canvas.drawBitmap(circleBitmap, 0, 0, null);
ImageView imageView = findViewById(R.id.imageView);
imageView.setImageBitmap(circleBitmap);
```
getRootView().getHeight()
这是一个 Android 中的方法调用,用于获取当前 Activity 的根 View 的高度。具体来说,getRootView() 方法返回当前 Activity 所包含的最顶层 View,也就是根 View,而 getHeight() 方法则返回该 View 的高度。通常情况下,该方法的返回值等于屏幕的高度,但在包含虚拟导航栏的设备上,其返回值可能会包含虚拟导航栏的高度。