如何在显示视图之前找到视图的宽度？

Question

如何在显示视图之前找到视图的宽度？我不想添加自定义视图并点击OnChanged()中的尺寸.

Answer 1

Display display = getWindowManager().getDefaultDisplay();
View view = findViewById(R.id.YOUR_VIEW_ID);
view.measure(display.getWidth(), display.getHeight());

view.getMeasuredWidth(); // view width
view.getMeasuredHeight(); //view height

Answer 2

@dmytrodanylyk - 我认为它将返回宽度和高度为0所以你需要使用以下内容

LayoutInflater inflater = (LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
View contentview = inflater.inflate(R.layout.YOURLAYOUTNAME, null, false);
contentview.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
int width = contentview.getMeasuredWidth();
int height = contentview.getMeasuredHeight();

它会给你正确的高度和宽度.

Answer 3

您应该使用OnGlobalLayoutListener在视图上调用的更改,但在绘制之前.

costumView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {

    @Override
    public void onGlobalLayout() {

      costumView.getWidth();

    }
});

Answer 4

Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
view.measure(size.x, size.y);
int width = view.getMeasuredWidth();
int height = view.getMeasuredHeight();