SphereLayout.java 文件源码

public SphereLayout(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SphereLayout);
    mRadius = a.getDimensionPixelSize(R.styleable.SphereLayout_radius, 0);//球体半径
    mOrientation = a.getInt(R.styleable.SphereLayout_snapOrientation, HORIZONTAL);//标记位于背面的视图是以Y轴水平翻转到达正面 或是以X轴竖直翻转可到达正面
    mHideBack = a.getBoolean(R.styleable.SphereLayout_hideBack, false);//是否隐藏处在背面的布局
    a.recycle();
    mCenter = new Point();
    mCamera = new Camera();
    mDependencyOffset = new int[2];
    //mCamera.setLocation(0, 0, -20);
    mMatrix = new Matrix();
    mPositiveChildren = new ArrayList<>();//depth为正的childview集合
    mNegativeChildren = new ArrayList<>();//depth为负的childview集合
    mDensity = getResources().getDisplayMetrics().density;
}