ShapeDrawable作为Android中RatingBar的progressDrawable？

Question

似乎我不能将ShapeDrawable设置为Ratingbar的progressDrawable.我尝试了以下但失败了:

<RatingBar
android:id="@+id/ratingbar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:numStars="5"
android:stepSize="1.0"
android:rating="3.0"
style="@style/myRatingBar"
/>

myRatingbar风格:

<style name="myRatingBar" parent="@android:style/Widget.RatingBar">
<item name="android:progressDrawable">@drawable/ratingbar_full</item>
<item name="android:indeterminateDrawable">@drawable/ratingbar_full</item>
<item name="android:minHeight">48dip</item>
<item name="android:maxHeight">48dip</item>
<item name="android:scaleType">center</item>
</style>

ratingbar_full.xml:

    <shape 
       android:shape="ring"
       android:innerRadius="10dip"
       android:thickness="1dip">
       <solid android:color="@color/red" />
       <size
           android:width="48dip"
           android:height="48dip"
       />
    </shape>

屏幕上没有显示任何内容.

编辑:使用.png而不是形状适用于此行:

@绘制/ ratingbar_full

Answer 1

形状XML Drawables + RatingBar完全混乱.

这就像我可以在不编写全新类的情况下获得解决方案一样接近.

我的扩展类ProgressBar根据需要正确地构建了可绘制的进度.

用我预先填充的状态替换您的空状态和完整状态.目前不是很灵活,你可以很容易地抽象出空/满星状态的设置.

/**
 * Created by chris on 28/08/2014.
 * For Yoyo-Android.
 */
public class ShapeDrawableRatingBar extends RatingBar {


    /**
     * TileBitmap to base the width off of.
     */
    @Nullable
    private Bitmap mSampleTile;

    public ShapeDrawableRatingBar(final Context context, final AttributeSet attrs) {
        super(context, attrs);
        setProgressDrawable(createProgressDrawable());
    }

    @Override
    protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);

        if (mSampleTile != null) {
            final int width = mSampleTile.getWidth() * getNumStars();
            setMeasuredDimension(resolveSizeAndState(width, widthMeasureSpec, 0),
                    getMeasuredHeight());
        }
    }

    protected LayerDrawable createProgressDrawable() {
        final Drawable backgroundDrawable = createBackgroundDrawableShape();
        LayerDrawable layerDrawable = new LayerDrawable(new Drawable[]{
                backgroundDrawable,
                backgroundDrawable,
                createProgressDrawableShape()
        });
        layerDrawable.setId(0, android.R.id.background);
        layerDrawable.setId(1, android.R.id.secondaryProgress);
        layerDrawable.setId(2, android.R.id.progress);
        return layerDrawable;
    }

    protected Drawable createBackgroundDrawableShape() {
        final Bitmap tileBitmap = drawableToBitmap(getResources().getDrawable(R.drawable.ic_stamp_circle_empty));
        if (mSampleTile == null) {
            mSampleTile = tileBitmap;
        }
        final ShapeDrawable shapeDrawable = new ShapeDrawable(getDrawableShape());
        final BitmapShader bitmapShader = new BitmapShader(tileBitmap, Shader.TileMode.REPEAT, Shader.TileMode.CLAMP);
        shapeDrawable.getPaint().setShader(bitmapShader);
        return shapeDrawable;
    }

    protected Drawable createProgressDrawableShape() {
        final Bitmap tileBitmap = drawableToBitmap(getResources().getDrawable(R.drawable.ic_stamp_circle_full));
        final ShapeDrawable shapeDrawable = new ShapeDrawable(getDrawableShape());
        final BitmapShader bitmapShader = new BitmapShader(tileBitmap, Shader.TileMode.REPEAT, Shader.TileMode.CLAMP);
        shapeDrawable.getPaint().setShader(bitmapShader);
        return new ClipDrawable(shapeDrawable, Gravity.LEFT, ClipDrawable.HORIZONTAL);
    }

    Shape getDrawableShape() {
        final float[] roundedCorners = new float[]{5, 5, 5, 5, 5, 5, 5, 5};
        return new RoundRectShape(roundedCorners, null, null);
    }

    public static Bitmap drawableToBitmap(Drawable drawable) {
        if (drawable instanceof BitmapDrawable) {
            return ((BitmapDrawable) drawable).getBitmap();
        }

        int width = drawable.getIntrinsicWidth();
        width = width > 0 ? width : 1;
        int height = drawable.getIntrinsicHeight();
        height = height > 0 ? height : 1;

        final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        final Canvas canvas = new Canvas(bitmap);
        drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
        drawable.draw(canvas);

        return bitmap;
    }

} 

拨打setMax setMaxStars电话,requestLayout这样你就可以正确测量宽度.没有必要解决android:minWidth,只需设置android:layout_width="wrap_content".

只记得你需要为你的ShapeDrawables边缘到边缘重复添加一些填充.

Answer 2

我自定义了@ChrisJenkins方法，因此您可以设置RatingBar图标的大小和自定义色调颜色来为图像评分。您可以在RatingBar上设置填充或设置自定义宽度和高度。@ChrisJenkins解决方案最终帮了我很多忙，最终提出了一个完全可自定义的RatingBar。您也可以在XML中设置参数。

public class DrawableRatingBar extends RatingBar
{
// TileBitmap to base the width and hight off of.
@Nullable
private Bitmap iconTile;
private float scaleIconFactor;
private @ColorInt int iconBackgroundColor;
private @ColorInt int iconForegroundColor;
private @DrawableRes int iconDrawable;

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

public DrawableRatingBar(Context context, AttributeSet attrs)
{
    super(context, attrs);

    TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.DrawableRatingBarItem);
    scaleIconFactor = a.getFloat(R.styleable.DrawableRatingBarItem_scaleIconFactor, 1);
    iconBackgroundColor = a.getColor(R.styleable.DrawableRatingBarItem_iconBackgroundColor, Color.BLACK);
    iconForegroundColor = a.getColor(R.styleable.DrawableRatingBarItem_iconForegroundColor, Color.WHITE);
    iconDrawable = a.getResourceId(R.styleable.DrawableRatingBarItem_iconDrawable, -1);
    a.recycle();

    init();
}

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

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public DrawableRatingBar(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)
{
    super(context, attrs, defStyleAttr, defStyleRes);
    init();
}

private void init()
{
    setProgressDrawable(createProgressDrawable());
}

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);

    if (iconTile != null)
    {
        final int width = iconTile.getWidth() * getNumStars();
        final int height = iconTile.getHeight();
        setMeasuredDimension(resolveSizeAndState(width, widthMeasureSpec, 0),
                             resolveSizeAndState(height, heightMeasureSpec, 0));
    }
}

protected LayerDrawable createProgressDrawable()
{
    final Drawable backgroundDrawable = createBackgroundDrawableShape();
    LayerDrawable layerDrawable = new LayerDrawable(new Drawable[] {backgroundDrawable,
                                                                    backgroundDrawable,
                                                                    createProgressDrawableShape()});
    layerDrawable.setId(0, android.R.id.background);
    layerDrawable.setId(1, android.R.id.secondaryProgress);
    layerDrawable.setId(2, android.R.id.progress);
    return layerDrawable;
}

protected Drawable createBackgroundDrawableShape()
{
    Drawable drawable = ContextCompat.getDrawable(getContext(), iconDrawable);

    final Bitmap tileBitmap = scaleImageWithColor(drawable, scaleIconFactor, iconBackgroundColor);
    if (iconTile == null)
    {
        iconTile = tileBitmap;
    }
    final ShapeDrawable shapeDrawable = new ShapeDrawable(getDrawableShape());
    final BitmapShader bitmapShader = new BitmapShader(tileBitmap, Shader.TileMode.REPEAT, Shader.TileMode.CLAMP);
    shapeDrawable.getPaint().setShader(bitmapShader);

    return shapeDrawable;
}


private void setRatingStarColor(Drawable drawable, @ColorInt int color)
{
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
    {
        DrawableCompat.setTint(drawable, color);
    }
    else
    {
        drawable.setColorFilter(color, PorterDuff.Mode.SRC_IN);
    }
}

protected Drawable createProgressDrawableShape()
{
    Drawable drawable = ContextCompat.getDrawable(getContext(), iconDrawable);

    final Bitmap tileBitmap = scaleImageWithColor(drawable, scaleIconFactor, iconForegroundColor);
    final ShapeDrawable shapeDrawable = new ShapeDrawable(getDrawableShape());
    final BitmapShader bitmapShader = new BitmapShader(tileBitmap, Shader.TileMode.REPEAT, Shader.TileMode.CLAMP);
    shapeDrawable.getPaint().setShader(bitmapShader);
    return new ClipDrawable(shapeDrawable, Gravity.LEFT, ClipDrawable.HORIZONTAL);
}

Shape getDrawableShape()
{
    return new RectShape();
}

public Bitmap scaleImageWithColor(Drawable drawable, float scaleFactor, @ColorInt int color)
{
    Bitmap b = ((BitmapDrawable) drawable).getBitmap();

    int sizeX = Math.round(drawable.getIntrinsicWidth() * scaleFactor);
    int sizeY = Math.round(drawable.getIntrinsicHeight() * scaleFactor);

    Bitmap bitmapResized = Bitmap.createScaledBitmap(b, sizeX, sizeY, true);

    Canvas canvas = new Canvas(bitmapResized);
    Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG);
    paint.setAntiAlias(true);
    ColorFilter filter = new LightingColorFilter(color, 1);
    paint.setColorFilter(filter);
    canvas.drawBitmap(bitmapResized, 0, 0, paint);

    return bitmapResized;

}

protected Bitmap fromDrawable(final Drawable drawable, final int height, final int width) {
    final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    final Canvas canvas = new Canvas(bitmap);
    drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
    drawable.draw(canvas);
    return bitmap;
}

public float getScaleIconFactor() {
    return scaleIconFactor;
}

public void setScaleIconFactor(float scaleIconFactor) {
    this.scaleIconFactor = scaleIconFactor;
}

public int getIconForegroundColor() {
    return iconForegroundColor;
}

public void setIconForegroundColor(int iconForegroundColor) {
    this.iconForegroundColor = iconForegroundColor;
}

public int getIconBackgroundColor() {
    return iconBackgroundColor;
}

public void setIconBackgroundColor(int iconBackgroundColor) {
    this.iconBackgroundColor = iconBackgroundColor;
}

public int getIconDrawable() {
    return iconDrawable;
}

public void setIconDrawable(int iconDrawable) {
    this.iconDrawable = iconDrawable;
}

}

自定义属性：

<declare-styleable name="DrawableRatingBarItem">
    <attr name="scaleIconFactor" format="float"/>
    <attr name="iconBackgroundColor" format="color"/>
    <attr name="iconForegroundColor" format="color"/>
    <attr name="iconDrawable" format="reference"/>
</declare-styleable>