RoundedImageView.java 文件源码

@SuppressLint("NewApi")
private void init(AttributeSet attrs) {
    if (Build.VERSION.SDK_INT >= 11) {
        setLayerType( LAYER_TYPE_SOFTWARE, null );
    }
    borderColor = DEFAULT_BORDER_COLOR;
    if(attrs != null){
        TypedArray array = context.obtainStyledAttributes(attrs, R.styleable._RoundedImageView);
        if(array != null){
            borderColor = array.getColor(R.styleable._RoundedImageView_borderColor, DEFAULT_BORDER_COLOR);
            borderWidth = array.getDimensionPixelSize(R.styleable._RoundedImageView_borderWidth, -1);
            roundWidth = array.getDimensionPixelSize(R.styleable._RoundedImageView_roundWidth, -1);
            array.recycle();
        }
    }
    DisplayMetrics displayMetrics = new DisplayMetrics();
    WindowManager windowManager = (WindowManager) getContext().getSystemService( Context.WINDOW_SERVICE );
    windowManager.getDefaultDisplay().getMetrics( displayMetrics );

    paint = new Paint();
    paint.setStyle( Style.STROKE );
    paint.setColor( borderColor );
    paint.setAntiAlias( true );
    paint.setStrokeWidth( borderWidth );
    Xfermode xfermode = new PorterDuffXfermode( PorterDuff.Mode.SRC );
    paint.setXfermode( xfermode );

    drawRect = new RectF();
    drawPath = new Path();
}