获取设置为包装内容的布局高度 [英] get height of layout that is set to wrap content

问题描述

我想获取设置为包装内容的线性布局的高度.但它是零. 我尝试使用以下代码:

I want to get height of linear layout that is set to wrap content. but it is zero. i try this codes:

 final LinearLayout below= (LinearLayout) findViewById(R.id.below);


         ViewTreeObserver vto = below.getViewTreeObserver();  
         vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {  
             @Override  
             public void onGlobalLayout() {  
                  width  = below.getMeasuredWidth(); 
                  height = below.getMeasuredHeight();  

             }  
         });

和:

 LinearLayout below= (LinearLayout) findViewById(R.id.below);
       final int belowh=below.getHeight();

使用代码:

 final LinearLayout below= (LinearLayout) findViewById(R.id.below);
        ViewTreeObserver vto = below.getViewTreeObserver(); 
        vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() { 
            @Override 
            public void onGlobalLayout() { 

        if(below.getMeasuredHeight()> 0){

                 this.below.getViewTreeObserver().removeGlobalOnLayoutListener(this); 
                int width  = below.getMeasuredWidth();
                int height = below.getMeasuredHeight(); 
        }
            } 
        })

    ;

单击此处查看

推荐答案

尝试一下

final LinearLayout below= (LinearLayout) findViewById(R.id.below);
    ViewTreeObserver vto = below.getViewTreeObserver(); 
    vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() { 
        @Override 
        public void onGlobalLayout() { 

    if(below.getMeasuredHeight()> 0){

             this.below.getViewTreeObserver().removeGlobalOnLayoutListener(this); 
            int width  = below.getMeasuredWidth();
            int height = below.getMeasuredHeight(); 
    }
        } 
    })

;

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