ShapeDrawable在LinearLayout中添加不能無用

Question

我HAVA創建DotView延長View，如：

private ShapeDrawable mDrawable = new ShapeDrawable(new OvalShape()); 

@Override 
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 
    mWidth = getWidth(); 
    mHeight = getHeight(); 

    if(mWidth>=mHeight){ 
     circleDiameter=mHeight/3; 
    }else{ 
     circleDiameter=mWidth/3; 
    } 

    left = (mWidth - circleDiameter)/2; 
    top = (mHeight - circleDiameter)/2; 
    right = left + circleDiameter; 
    bottom = top + circleDiameter; 

    super.onMeasure (widthMeasureSpec, heightMeasureSpec); 
} 

@Override 
protected void onDraw(Canvas canvas) { 
    canvas.drawColor(Color.WHITE); 
    canvas.drawLine(0, 0, this.getWidth() - 1, 0, paint); 
    canvas.drawLine (0, 0, 0, this.getHeight() - 1, paint); 
    canvas.drawLine(this.getWidth() - 1, 0, this.getWidth() - 1, this.getHeight() - 1, paint); 
    canvas.drawLine(0, this.getHeight() - 1, this.getWidth() - 1, this.getHeight() - 1, paint); 
    mDrawable.setBounds (left, top, right, bottom); 
    mDrawable.getPaint().setColor (Color.BLACK); 
    mDrawable.draw (canvas); 
} 

只使用DotView在XML可以desplay：

比我創建了一個PasswordBox延伸LinearLayout並新增六個DotView：

private int mPwdSize = 6; 

@Override 
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 
    super.onMeasure (widthMeasureSpec, heightMeasureSpec); 
    setOrientation (HORIZONTAL); 
    for(int i = 0; i < mPwdSize; i++) { 
     DotView dotView = new DotView (getContext()); 
     LayoutParams layoutParams = new LayoutParams (getWidth()/6,getHeight()); 
     addView (dotView, layoutParams); 
    } 
} 

但它不工作！ ShapeDrawable不能玩。看看圖片：

我不知道在哪裏的代碼有問題，請幫助me.thanks。

Answer 1

我解決了這個問題。太蠢了，getWidth()是0，應該用getMeasuredWidth()