自定义视图无法应用填充

Question

我创建了一个自定义视图，它扩展了按钮，并根据我提供的颜色创建了一个简单的Drawable背景。

未指定填充结果没有填充。 在单个FlatButton的XML声明中指定填充会导致无填充。 以编程方式设置填充没有任何影响。

是什么给出了？

public class FlatButton extends Button {

private int buttonColor;
private int pressedButtonColor = -1;
private int cornerRadius;
private int paddingLeft;
private int paddingTop;
private int paddingRight;
private int paddingBottom;

private Drawable pressedDrawable;
private Drawable unpressedDrawable;

public FlatButton(Context context) {
    super(context);
    init();
}

public FlatButton(Context context, AttributeSet attrs) {
    super(context, attrs);
    init();
    parseAttrs(context, attrs);
}

public FlatButton(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    init();
    parseAttrs(context, attrs);
}

@Override
protected void onFinishInflate() {
    super.onFinishInflate();
    refresh();
}

public void refresh() {
    int alpha = Color.alpha(buttonColor);
    float[] hsv = new float[3];
    Color.colorToHSV(buttonColor, hsv);
    hsv[2] *= 0.8f;
    //if shadow color was not defined, generate shadow color = 120% brightness
    if (pressedButtonColor == -1) {
        pressedButtonColor = Color.HSVToColor(alpha, hsv);
    }
    //Create pressed background and unpressed background drawables

    if (this.isEnabled()) {
        pressedDrawable = createDrawable(cornerRadius, pressedButtonColor);
        unpressedDrawable = createDrawable(cornerRadius, buttonColor);
    } else {
        Color.colorToHSV(buttonColor, hsv);
        hsv[1] *= 0.25f; // saturation component
        int disabledColor = Color.HSVToColor(alpha, hsv);
        // Disabled button does not have shadow
        pressedDrawable = createDrawable(cornerRadius, disabledColor);
        unpressedDrawable = createDrawable(cornerRadius, disabledColor);
    }
    Drawable drawable = createStateListDrawable(pressedDrawable, unpressedDrawable);
    updateBackground(drawable);
    setPadding();
}

private void setPadding() {
    this.setPadding(paddingLeft, paddingTop, paddingRight, paddingBottom);
}

private Drawable createStateListDrawable(Drawable pressedDrawable, Drawable unpressedDrawable) {

    StateListDrawable stateListDrawable = new StateListDrawable();
    stateListDrawable.addState(new int[]{android.R.attr.state_pressed}, pressedDrawable);
    stateListDrawable.addState(StateSet.WILD_CARD, unpressedDrawable);
    return stateListDrawable;
}

private Drawable createDrawable(int radius, int color) {
    float[] outerRadius = new float[]{radius, radius, radius, radius, radius, radius, radius, radius};
    RoundRectShape roundRectShape = new RoundRectShape(outerRadius, null, null);
    ShapeDrawable shapeDrawable = new ShapeDrawable(roundRectShape);
    shapeDrawable.getPaint().setColor(color);
    return shapeDrawable;
}

private void init() {
    Resources resources = getResources();
    if (resources == null) {
        return;
    }

    this.setTextColor(resources.getColor(R.color.flatbutton_default_text_color));
    this.setAllCaps(resources.getBoolean(R.bool.flatbutton_default_textallcaps));
    this.setTypeface(Typeface.DEFAULT_BOLD);
    this.setTextSize(14f);
    this.setHeight(resources.getDimensionPixelSize(R.dimen.flatbutton_default_height));

    this.buttonColor = resources.getColor(R.color.colorPrimary);
    this.cornerRadius = resources.getDimensionPixelSize(R.dimen.flatbutton_default_corner_radius);

    //setPadding();
}

private void parseAttrs(Context context, AttributeSet attrs) {

    TypedArray a = context.getTheme().obtainStyledAttributes(attrs, R.styleable.FlatButton, 0, 0);

    TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.FlatButton);
    if (typedArray == null) return;
    for (int i = 0; i < typedArray.getIndexCount(); i++) {
        int attr = typedArray.getIndex(i);
        if (attr == R.styleable.FlatButton_buttonColor) {
            buttonColor = typedArray.getColor(attr, R.color.colorPrimary);
        } else if (attr == R.styleable.FlatButton_cornerRadius) {
            cornerRadius = typedArray.getDimensionPixelSize(attr, R.dimen.flatbutton_default_corner_radius);
        }
    }
    typedArray.recycle();

    int[] attrsArray = new int[]{
            android.R.attr.paddingLeft,  // 0
            android.R.attr.paddingRight, // 1
    };
    TypedArray ta = context.obtainStyledAttributes(attrs, attrsArray);
    if (ta == null) return;
    paddingLeft = ta.getDimensionPixelSize(0, 0);
    paddingRight = ta.getDimensionPixelSize(1, 0);
    ta.recycle();

    //Get paddingTop, paddingBottom
    int[] attrsArray2 = new int[]{
            android.R.attr.paddingTop,   // 0
            android.R.attr.paddingBottom,// 1
    };
    TypedArray ta1 = context.obtainStyledAttributes(attrs, attrsArray2);
    if (ta1 == null) return;
    paddingTop = ta1.getDimensionPixelSize(0, 0);
    paddingBottom = ta1.getDimensionPixelSize(1, 0);
    ta1.recycle();
}

private void updateBackground(Drawable background) {
    if (background == null) return;
    //Set button background
    if (Build.VERSION.SDK_INT >= 16) {
        this.setBackground(background);
    } else {
        this.setBackgroundDrawable(background);
    }
}


public int getButtonColor() {
    return buttonColor;
}

public void setButtonColor(int buttonColor) {
    this.buttonColor = buttonColor;
}

public int getCornerRadius() {
    return cornerRadius;
}

public void setCornerRadius(int cornerRadius) {
    this.cornerRadius = cornerRadius;
}

public int getPressedButtonColor() {
    return pressedButtonColor;
}

public void setPressedButtonColor(int pressedButtonColor) {
    this.pressedButtonColor = pressedButtonColor;
}

public Drawable getPressedDrawable() {
    return pressedDrawable;
}

public void setPressedDrawable(Drawable pressedDrawable) {
    this.pressedDrawable = pressedDrawable;
}

public Drawable getUnpressedDrawable() {
    return unpressedDrawable;
}

public void setUnpressedDrawable(Drawable unpressedDrawable) {
    this.unpressedDrawable = unpressedDrawable;
}

}

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="FlatButton">
        <attr name="buttonColor" format="color" />
        <attr name="cornerRadius" format="dimension" />
    </declare-styleable>
</resources>

梦诗

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <dimen name="flatbutton_default_corner_radius">3dp</dimen>
    <dimen name="flatbutton_default_padding_left">10dp</dimen>
    <dimen name="flatbutton_default_padding_right">10dp</dimen>
    <dimen name="flatbutton_default_padding_top">5dp</dimen>
    <dimen name="flatbutton_default_padding_bottom">5dp</dimen>
    <dimen name="flatbutton_default_height">30dp</dimen>
    <dimen name="flatbutton_default_text_size">14sp</dimen>
</resources>