CustomToggleButton.java 文件源码

public void initialize(Context context, AttributeSet attrs) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            this.setBackground(getResources().getDrawable(R.drawable.toggle_background, null));
        } else {
            this.setBackground(getResources().getDrawable(R.drawable.toggle_background));
        }

        StateListDrawable stateListDrawable = (StateListDrawable) this.getBackground();
        DrawableContainer.DrawableContainerState dcs = (DrawableContainer.DrawableContainerState) stateListDrawable.getConstantState();
        Drawable[] drawableItems = dcs.getChildren();
        GradientDrawable unChecked = (GradientDrawable) drawableItems[0];
        GradientDrawable checked = (GradientDrawable) drawableItems[1];
        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.CustomToggleButton);

//        getting all the attributes values set from the typed array i.e from user
        int toggleOnColor = typedArray.getColor(R.styleable.CustomToggleButton_checkedColor, Color.parseColor("#FF4081"));
        int toggleOffColor = typedArray.getColor(R.styleable.CustomToggleButton_uncheckedColor, Color.parseColor("#FF4081"));
        float borderWidth = typedArray.getDimension(R.styleable.CustomToggleButton_borderWidth, 4.0f);
        float radius = typedArray.getDimension(R.styleable.CustomToggleButton_radius, 15.0f);
        int checkedTextColor = typedArray.getColor(R.styleable.CustomToggleButton_checkedTextColor, getResources().getColor(R.color.CheckedTextColor));
        int uncheckedTextColor = typedArray.getColor(R.styleable.CustomToggleButton_uncheckedTextColor, getResources().getColor(R.color.uncheckedTextColor));
        Log.d(TAG, "initialize: " + borderWidth);
        ColorStateList colorStateList = new ColorStateList(
                new int[][]{
                        new int[]{android.R.attr.state_checked},
                        new int[]{-android.R.attr.state_checked}
                },
                new int[]{
                        checkedTextColor,
                        uncheckedTextColor
                }
        );

        this.setTextColor(colorStateList);


        checked.setStroke(Math.round(borderWidth), toggleOnColor);
        checked.setColor(toggleOnColor);
        checked.setCornerRadius(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, radius, getResources().getDisplayMetrics()));

        unChecked.setStroke(Math.round(borderWidth), toggleOffColor);
        unChecked.setCornerRadius(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, radius, getResources().getDisplayMetrics()));


    }