如何在Android中创建自定义评分栏

80

您好，我需要在我的应用程序中执行评分...所以我需要创建自定义评分栏...有人可以帮我吗？

android 
— Coder_sLaY
source
6
一些代码片段将很有用（也许是目标的模型），以了解您到目前为止的情况。看着您的帖子，解决起来似乎没有问题，更多的工作机会，请详细说明。
— rekaszeru 2011年

Answers:

153

编辑

看看Motorola中的自定义评分http://community.developer.motorola.com/t5/Android-App-Development-for/custom-rating-bar-style-using-android-s-ratingBar-small-style/ TD-P / 10462

更新

styles.xml

这必须位于您的值文件夹中

 <?xml version="1.0" encoding="utf-8"?>
  <resources>
    <style name="foodRatingBar" parent="@android:style/Widget.RatingBar">
       <item name="android:progressDrawable">@drawable/food_rating_bar_full</item>
       <item name="android:minHeight">23dip</item>
       <item name="android:maxHeight">25dip</item>
   </style>
  </resources>

food_rating_bar_full.xml

该文件必须位于Drawable文件夹中。

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@+id/background"
    android:drawable="@drawable/food_ratingbar_full_empty" />
    <item android:id="@+id/secondaryProgress"
    android:drawable="@drawable/food_ratingbar_full_empty" />
    <item android:id="@+id/progress"
    android:drawable="@drawable/food_ratingbar_full_filled" />
</layer-list>

food_ratingbar_full_empty.xml

该文件必须在Drawable文件夹中。

<?xml version="1.0" encoding="utf-8"?>

<!-- This is the rating bar drawable that is used to
 show a filled cookie. -->
<selector
xmlns:android="http://schemas.android.com/apk/res/android">

<item android:state_pressed="true"
      android:state_window_focused="true"
      android:drawable="@drawable/cookiee" />

<item android:state_focused="true"
      android:state_window_focused="true"
      android:drawable="@drawable/cookiee" />

<item android:state_selected="true"
      android:state_window_focused="true"
      android:drawable="@drawable/cookiee" />

<item android:drawable="@drawable/cookiee" />

</selector>

food_ratingbar_full_filled.xml

该文件必须位于Drawable文件夹中。

<?xml version="1.0" encoding="utf-8"?>

 <!-- This is the rating bar drawable that is used to
 show a unfilled cookie. -->
<selector
xmlns:android="http://schemas.android.com/apk/res/android">

<item android:state_pressed="true"
      android:state_window_focused="true"
      android:drawable="@drawable/cookie" />

<item android:state_focused="true"
      android:state_window_focused="true"
      android:drawable="@drawable/cookie" />

<item android:state_selected="true"
      android:state_window_focused="true"
      android:drawable="@drawable/cookie" />

<item android:drawable="@drawable/cookie" />

</selector>

main.xml文件应如下所示：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <RatingBar android:id="@+id/ratingBar1"
        style="@style/foodRatingBar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

    </RatingBar>
</LinearLayout>

MainActivity.class应该看起来像：

import android.app.Activity;
import android.os.Bundle;
import android.widget.RatingBar;
import android.widget.RatingBar.OnRatingBarChangeListener;
import android.widget.Toast;

public class MainActivity extends Activity {
/** Called when the activity is first created. */

RatingBar rb;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    rb=(RatingBar)findViewById(R.id.ratingBar1);

    rb.setOnRatingBarChangeListener(new OnRatingBarChangeListener(){

        @Override
        public void onRatingChanged(RatingBar ratingBar, float rating,
                boolean fromUser) {
            // TODO Auto-generated method stub
                Toast.makeText(getApplicationContext(),Float.toString(rating),Toast.LENGTH_LONG).show();

        }

    }); 
}
}

我使用了两个图像：

cookie.jpg

cookiee.jpg

这两个图像大小相同，一个用于标识选定的评级栏，另一个用于标识未选择的评级栏。

— 卡迪克·多玛迪亚（Kartik Domadiya）
source
16
在更改文件food_rating_bar_full.xml中项目ID后，这对我有用。我将<item android：id =“ @ + android：id / background”替换为<item android：id =“ @ android：id / background”（不带+符号）。
— R. Campos 2014年
1
帖子中的拳头链接
— 断开
1
— Jay Rathod RJ
3
与@erdomester建议的相同，但代码更多。注意：不要忘记它不适用于Vector Images，只能用于.png！
— Kirill Karmazin
1
不适用于我，但是当我替换掉时很好：-android：id =“ @ + id / background与@android：id / background-android：id =” @ + id / secondaryProgress“与android：id =“ @ android：id / secondaryProgress”-android：id =“ @ + id / progress”与android：id =“ @ android：id / progress”
— Haris D.
56

我需要添加比上述解决方案更容易的解决方案。我们甚至不需要使用样式。

在drawable文件夹中创建一个选择器文件：

custom_ratingbar_selector.xml

<?xml version="1.0" encoding="utf-8"?>
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
 <item android:id="@android:id/background"
    android:drawable="@drawable/star_off" />

 <item android:id="@android:id/secondaryProgress"
    android:drawable="@drawable/star_off" />

 <item android:id="@android:id/progress"
    android:drawable="@drawable/star_on" />

</layer-list>

在布局中，将选择器文件设置为progressDrawable：

 <RatingBar
        android:id="@+id/ratingBar2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="20dp"
        android:progressDrawable="@drawable/custom_ratingbar_selector"
        android:numStars="8"
        android:stepSize="0.2"
        android:rating="3.0" />

这就是我们所需要的。

— 雌性
source
1
+1，但抱歉，这应该可以，但不能。首先，您说您添加了选择器，但实际上您添加了一个图层列表。其次，我完全尝试了您的代码，但是得到的只是一个空白组件（根本没有图像）。也许您可以回答我的问题：stackoverflow.com/questions/14251092/…谢谢：D
— Blaze Tama
3
这种简单的方法会导致在布局中放置评级栏的问题。定义样式的更传统的方法更好。
— javaxian 2014年
3
它在评分栏的所有星级下方均显示一条线
— Sunil，2015年
3
效果很好，谢谢。注意：不要忘记它不适用于Vector Images，只能用于.png！
— Kirill Karmazin
47

首先将图像添加到drawable：

在此处输入图片说明 在此处输入图片说明

第一张图片“ ratingbar_staroff.png”和第二张图片“ ratingbar_staron.png”

之后，在res / drawable上创建“ ratingbar.xml”

<?xml version="1.0" encoding="utf-8"?>
<!--suppress AndroidDomInspection -->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@+android:id/background"
        android:drawable="@drawable/ratingbar_empty" />
    <item android:id="@+android:id/secondaryProgress"
        android:drawable="@drawable/ratingbar_empty" />
    <item android:id="@+android:id/progress"
        android:drawable="@drawable/ratingbar_filled" />
</layer-list>

下一个xml在res / drawable上相同

“ ratingbar_empty.xml”

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_pressed="true"
        android:state_window_focused="true"
        android:drawable="@drawable/ratingbar_staroff" />

    <item android:state_focused="true"
        android:state_window_focused="true"
        android:drawable="@drawable/ratingbar_staroff" />

    <item android:state_selected="true"
        android:state_window_focused="true"
        android:drawable="@drawable/ratingbar_staroff" />

    <item android:drawable="@drawable/ratingbar_staroff" />

</selector>

“ ratingbar_filled”

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_pressed="true"
        android:state_window_focused="true"
        android:drawable="@drawable/ratingbar_staron" />

    <item android:state_focused="true"
        android:state_window_focused="true"
        android:drawable="@drawable/ratingbar_staron" />

    <item android:state_selected="true"
        android:state_window_focused="true"
        android:drawable="@drawable/ratingbar_staron" />

    <item android:drawable="@drawable/ratingbar_staron" />

</selector>

接下来，在res / values / styles上添加以下代码行

<style name="CustomRatingBar" parent="@android:style/Widget.RatingBar">
    <item name="android:progressDrawable">@drawable/ratingbar</item>
    <item name="android:minHeight">18dp</item>
    <item name="android:maxHeight">18dp</item>
</style>

现在，已经可以向Ratingbar资源添加样式

        <RatingBar
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            style= "@style/CustomRatingBar"
            android:id="@+id/ratingBar"
            android:numStars="5"
            android:stepSize="0.01"
            android:isIndicator="true"/>

最后只在您的活动上声明：

RatingBar ratingbar = (RatingBar) findViewById(R.id.ratingbar);
ratingbar.setRating(3.67f);

在此处输入图片说明

— 亚历克斯·扎罗斯（Alex Zaraos）
source
5
它类似于选中的答案。但是在图层列表中有图片（显示分数星）和<！-禁止AndroidDomInspection->。您可以改为在“ @ + android：id / background”中删除加号，以避免android错误。还应将minHeight和maxHeight更改为50dp。
— CoolMind
感谢您的解决方案。我可以知道您如何调整星星的大小吗？我的来的很小。谢谢。
— 周杰伦
@jay在res/values/styles他的定义中android:minHeight并进行了android:maxHeight更改，以使星星变大
— Inzimam Tariq IT
7

使用图层列表和选择器创建自定义等级栏很复杂，最好重写RatingBar类并创建自定义RatingBar。createBackgroundDrawableShape（）是应该将空状态png放置的函数，createProgressDrawableShape（）是应该将填充状态png放置的函数。

注意：此代码目前不适用于svg。

public class CustomRatingBar extends RatingBar {

    @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_star_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_star_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;
    }
}
— 高拉夫·萨卢嘉（Gaurav Saluja）
source
如何增加物品之间的空间？
— Ali Rezaiyan
1
@AliRezaiyan：由于我们使用的是自己的可绘制对象，例如ic_star_full和ic_star_empty，因此您只需在PNG的左侧和右侧添加空白（填充）。您可以使用GIMP或Android Asset Studio之类的工具通过编辑PNG来实现此目的。希望这可以帮助。
— Gaurav Saluja
我正在寻找一种编程方式
— Ali Rezaiyan
5

对于SVG， RatingBar我在这里使用了RatingBar自定义矢量可绘制对象叠加和erdomester的答案。此解决方案遍历SvgRatingBar布局视图内的所有可绘制对象，因此RecyclerView会产生开销。

SvgRatingBar.java：

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ClipDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.VectorDrawable;
import android.graphics.drawable.shapes.RoundRectShape;
import android.graphics.drawable.shapes.Shape;
import android.os.Build;
import android.support.graphics.drawable.VectorDrawableCompat;
import android.support.v7.graphics.drawable.DrawableWrapper;
import android.support.v7.widget.AppCompatRatingBar;
import android.util.AttributeSet;
import android.view.Gravity;

public class SvgRatingBar extends AppCompatRatingBar {

    private Bitmap sampleTile;

    public SvgRatingBar(Context context) {
        this(context, null);
    }

    public SvgRatingBar(Context context, AttributeSet attrs) {
        this(context, attrs, android.support.v7.appcompat.R.attr.ratingBarStyle);
    }

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

    private void init() {
        LayerDrawable drawable = (LayerDrawable) createTile(getProgressDrawable(), false);
        setProgressDrawable(drawable);
    }

    /**
     * Converts a drawable to a tiled version of itself. It will recursively
     * traverse layer and state list drawables.
     */
    @SuppressLint("RestrictedApi")
    private Drawable createTile(Drawable drawable, boolean clip) {
        if (drawable instanceof DrawableWrapper) {
            Drawable inner = ((DrawableWrapper) drawable).getWrappedDrawable();
            if (inner != null) {
                inner = createTile(inner, clip);
                ((DrawableWrapper) drawable).setWrappedDrawable(inner);
            }
        } else if (drawable instanceof LayerDrawable) {
            LayerDrawable background = (LayerDrawable) drawable;
            final int n = background.getNumberOfLayers();
            Drawable[] outDrawables = new Drawable[n];

            for (int i = 0; i < n; i++) {
                int id = background.getId(i);
                outDrawables[i] = createTile(background.getDrawable(i),
                        (id == android.R.id.progress || id == android.R.id.secondaryProgress));
            }
            LayerDrawable newBg = new LayerDrawable(outDrawables);

            for (int i = 0; i < n; i++) {
                newBg.setId(i, background.getId(i));
            }

            return newBg;

        } else if (drawable instanceof BitmapDrawable) {
            final BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;
            final Bitmap tileBitmap = bitmapDrawable.getBitmap();
            if (sampleTile == null) {
                sampleTile = tileBitmap;
            }

            final ShapeDrawable shapeDrawable = new ShapeDrawable(getDrawableShape());
            final BitmapShader bitmapShader = new BitmapShader(tileBitmap,
                    Shader.TileMode.REPEAT, Shader.TileMode.CLAMP);
            shapeDrawable.getPaint().setShader(bitmapShader);
            shapeDrawable.getPaint().setColorFilter(bitmapDrawable.getPaint().getColorFilter());
            return (clip) ? new ClipDrawable(shapeDrawable, Gravity.START,
                    ClipDrawable.HORIZONTAL) : shapeDrawable;
        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && drawable instanceof VectorDrawable) {
            return createTile(getBitmapDrawableFromVectorDrawable(drawable), clip);
        } else if (drawable instanceof VectorDrawableCompat) {
            // API 19 support.
            return createTile(getBitmapDrawableFromVectorDrawable(drawable), clip);
        }
        return drawable;
    }

    private BitmapDrawable getBitmapDrawableFromVectorDrawable(Drawable drawable) {
        Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);
        drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
        drawable.draw(canvas);
        return new BitmapDrawable(getResources(), bitmap);
    }

    @Override
    protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        if (sampleTile != null) {
            final int width = sampleTile.getWidth() * getNumStars();
            setMeasuredDimension(resolveSizeAndState(width, widthMeasureSpec, 0),
                    getMeasuredHeight());
        }
    }

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

在您的布局中：

<com.example.common.control.SvgRatingBar
    android:id="@+id/rate"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:minHeight="13dp"
    android:numStars="5"
    android:progressDrawable="@drawable/rating_bar"
    android:rating="3.5"
    android:stepSize="0.01"
    />

您还必须使用两个SVG可绘制对象创建rating_bar.xml：

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@android:id/background"
        android:drawable="@drawable/ic_unfilled_star"
        />

    <item
        android:id="@android:id/secondaryProgress"
        android:drawable="@drawable/ic_unfilled_star"
        />

    <item
        android:id="@android:id/progress"
        android:drawable="@drawable/ic_filled_star"
        />

</layer-list>

在此处输入图片说明

在科特林。

import android.annotation.SuppressLint
import android.content.Context
import android.graphics.Bitmap
import android.graphics.BitmapShader
import android.graphics.Canvas
import android.graphics.Shader
import android.graphics.drawable.*
import android.graphics.drawable.shapes.RoundRectShape
import android.os.Build
import android.util.AttributeSet
import android.view.Gravity
import androidx.appcompat.R
import androidx.appcompat.graphics.drawable.DrawableWrapper
import androidx.appcompat.widget.AppCompatRatingBar
import androidx.vectordrawable.graphics.drawable.VectorDrawableCompat

class SvgRatingBar @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null,
                                             defStyleAttr: Int = R.attr.ratingBarStyle) :
    AppCompatRatingBar(context, attrs, defStyleAttr) {

    private var sampleTile: Bitmap? = null
    private val roundedCorners = floatArrayOf(5f, 5f, 5f, 5f, 5f, 5f, 5f, 5f)
    private val roundRectShape = RoundRectShape(roundedCorners, null, null)

    init {
        progressDrawable = createTile(progressDrawable, false) as LayerDrawable
    }

    /**
     * Converts a drawable to a tiled version of itself. It will recursively
     * traverse layer and state list drawables.
     */
    private fun createTile(drawable: Drawable, clip: Boolean): Drawable =
        when {
            drawable is DrawableWrapper -> {
                @SuppressLint("RestrictedApi")
                var inner = drawable.wrappedDrawable
                if (inner != null) {
                    inner = createTile(inner, clip)
                    @SuppressLint("RestrictedApi")
                    drawable.wrappedDrawable = inner
                }
                drawable
            }
            drawable is LayerDrawable -> {
                val n = drawable.numberOfLayers
                val outDrawables = arrayOfNulls<Drawable>(n)
                for (i in 0 until n) {
                    val id = drawable.getId(i)
                    outDrawables[i] = createTile(drawable.getDrawable(i),
                        id == android.R.id.progress || id == android.R.id.secondaryProgress)
                }
                val newBg = LayerDrawable(outDrawables)
                for (i in 0 until n) {
                    newBg.setId(i, drawable.getId(i))
                }
                newBg
            }
            drawable is BitmapDrawable -> {
                val tileBitmap = drawable.bitmap
                if (sampleTile == null) {
                    sampleTile = tileBitmap
                }
                val bitmapShader = BitmapShader(tileBitmap, Shader.TileMode.REPEAT,
                    Shader.TileMode.CLAMP)
                val shapeDrawable = ShapeDrawable(roundRectShape).apply {
                    paint.shader = bitmapShader
                    paint.colorFilter = drawable.paint.colorFilter
                }
                if (clip) ClipDrawable(shapeDrawable, Gravity.START, ClipDrawable.HORIZONTAL)
                else shapeDrawable
            }
            Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && drawable is VectorDrawable -> {
                createTile(getBitmapDrawableFromVectorDrawable(drawable), clip)
            }
            drawable is VectorDrawableCompat -> {
                // Pre-Lollipop support.
                createTile(getBitmapDrawableFromVectorDrawable(drawable), clip)
            }
            else -> drawable
        }

    private fun getBitmapDrawableFromVectorDrawable(drawable: Drawable): BitmapDrawable {
        val bitmap = Bitmap.createBitmap(drawable.intrinsicWidth, drawable.intrinsicHeight,
            Bitmap.Config.ARGB_8888)
        val canvas = Canvas(bitmap)
        drawable.setBounds(0, 0, canvas.width, canvas.height)
        drawable.draw(canvas)
        return BitmapDrawable(resources, bitmap)
    }

    @Synchronized override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec)
        if (sampleTile != null) {
            val width = sampleTile!!.width * numStars
            setMeasuredDimension(resolveSizeAndState(width, widthMeasureSpec, 0),
                measuredHeight)
        }
    }
}
— 酷心
source
@Michalsx，谢谢，祝你好运！添加了Kotlin版本。
— CoolMind
4

我调查了原始来源，
这是我的结果。

styles.xml（res / values）

<!-- RatingBar -->
<style name="RatingBar" 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">13.4dp</item>
    <item name="android:maxHeight">13.4dp</item>
</style>

ratingbar_full.xml（分辨率/可绘制）

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@android:id/background" android:drawable="@drawable/btn_rating_star_off_normal" />
    <item android:id="@android:id/secondaryProgress" android:drawable="@drawable/btn_rating_star_off_normal" />
    <item android:id="@android:id/progress" android:drawable="@drawable/btn_rating_star_on_normal" />
</layer-list>

btn_rating_star_off_normal.png（res / drawable-xxhdpi）

在此处输入图片说明

btn_rating_star_on_normal.png（res / drawable-xxhdpi）

在此处输入图片说明

activity_ratingbar.xml（分辨率/布局）

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.appcompat.widget.AppCompatRatingBar
        android:id="@+id/ratingbar"
        style="@style/RatingBar"
        android:layout_width="wrap_content"
        android:layout_height="13.4dp"
        android:isIndicator="false"
        android:numStars="5"
        android:rating="2.6"
        android:secondaryProgressTint="#00000000"
        android:stepSize="0.1" />
</FrameLayout>

这就是结果。

在此处输入图片说明

  • 请注意，我在layout_height属性中添加了ratingbar的实际高度（13.4dp），因为如果设置为true ，则它将wrap_content在星形下方绘制线条。（仅在Android Studio的预览版中）
— 云杉
source
1

以下代码有效：

@Override
protected synchronized void onDraw(Canvas canvas)
{
    int stars = getNumStars();
    float rating = getRating();
    try
    {
        bitmapWidth = getWidth() / stars;
    }
    catch (Exception e)
    {
        bitmapWidth = getWidth();
    }
    float x = 0;

    for (int i = 0; i < stars; i++)
    {
        Bitmap bitmap;
        Resources res = getResources();
        Paint paint = new Paint();

        if ((int) rating > i)
        {
            bitmap = BitmapFactory.decodeResource(res, starColor);
        }
        else
        {
            bitmap = BitmapFactory.decodeResource(res, starDefault);
        }
        Bitmap scaled = Bitmap.createScaledBitmap(bitmap, getHeight(), getHeight(), true);
        canvas.drawBitmap(scaled, x, 0, paint);
        canvas.save();
        x += bitmapWidth;
    }

    super.onDraw(canvas);
}
— 玛尼·阿加瓦尔
source
1

您可以通过使用所选的材质图标定义可绘制的xml，然后使用progressDrawable属性将自定义可绘制对象应用于评分栏来创建自定义材料评分栏。

有关自定义评分栏的信息，请参见 http://www.zoftino.com/android-ratingbar-and-custom-ratingbar-example

在drawable xml下面，使用大拇指图标进行评分。

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@android:id/background">
        <bitmap
            android:src="@drawable/thumb_up"
            android:tint="?attr/colorControlNormal" />
    </item>
    <item android:id="@android:id/secondaryProgress">
        <bitmap
            android:src="@drawable/thumb_up"
            android:tint="?attr/colorControlActivated" />
    </item>
    <item android:id="@android:id/progress">
        <bitmap
            android:src="@drawable/thumb_up"
            android:tint="?attr/colorControlActivated" />
    </item>
</layer-list>
— 阿尔纳夫·饶
source
0

当创建一个自定义等级栏时，它显示在类似SeekBar的轨道上而不是星形上运行的实心渐变线，我还遇到了与背景的垂直居中有关的问题（可绘制轨道）。这是我最初使用的有缺陷的可绘制代码（产生了问题），正如Android开发人员和其他StackOverflow条目所建议的那样：

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <item
        android:id="@android:id/background"
        android:drawable="@drawable/seekbar_track"/>
    <item android:id="@android:id/secondaryProgress">
        <scale
            android:drawable="@drawable/seekbar_progress2"
            android:scaleWidth="100%" />
    </item>

    <item android:id="@android:id/progress" >
        <clip android:clipOrientation="horizontal" android:gravity="left" >
            <shape>
                <gradient
                    android:startColor="@color/ratingbar_bg_start"
                    android:centerColor="@color/ratingbar_bg_center"
                    android:centerX="0.5"
                    android:endColor="@color/ratingbar_bg_end"
                    android:angle="0"
                    />
            </shape>
        </clip>
    </item>    

 </layer-list>

这里的问题是第一项，它与自定义RatingBar的背景有关。许多条目将告诉您将layout_minHeight功能设置为某个较大的值，以避免拇指和其轨迹之间的垂直空间断开。这不是我的解决方案-在平板电脑上查看时，背景仍然吸引到较小的基于手机的尺寸-因此该轨道始终位于RatingBar轨道的中心上方。解决方案是在RatingBar可绘制对象中删除此条目，因此现在看起来像这样：

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:id="@android:id/secondaryProgress">
        <scale
            android:drawable="@drawable/seekbar_progress2"
            android:scaleWidth="100%" />
    </item>

    <item android:id="@android:id/progress" >
        <clip android:clipOrientation="horizontal" android:gravity="left" >
            <shape>
                <gradient
                    android:startColor="@color/ratingbar_bg_start"
                    android:centerColor="@color/ratingbar_bg_center"
                    android:centerX="0.5"
                    android:endColor="@color/ratingbar_bg_end"
                    android:angle="0"
                    />
            </shape>
        </clip>
    </item>    

 </layer-list>

然后，在自定义RatingBar的样式定义中，将layout_background设置为可绘制的轨道。我的看起来像这样：

<style name="styleRatingBar" parent="@android:style/Widget.RatingBar">
    <item name="android:indeterminateOnly">false</item>
    <item name="android:background">@drawable/seekbar_track</item>
    <item name="android:progressDrawable">@drawable/abratingbar</item>
    <item name="android:thumb">@drawable/abseekbar_thumb</item>
    <item name="android:minHeight">@dimen/base_29dp</item>
    <item name="android:maxHeight">@dimen/base_29dp</item>
    <item name="android:layout_marginLeft">@dimen/base_10dp</item>
    <item name="android:layout_marginRight">@dimen/base_10dp</item>
    <item name="android:layout_marginTop">@dimen/base_10dp</item>
    <item name="android:layout_marginBottom">@dimen/base_10dp</item>
    <item name="android:scaleType">fitXY</item>
</style>

（以前，这里的背景设置是未定义的。）。

这是布局中的条目，它同时使用样式和可绘制对象：

<RatingBar
    android:id="@+id/ratingbar_vote"
    style="@style/styleRatingBar"
    android:hint="@string/ratingbar_vote"
    android:contentDescription="@string/ratingbar_vote"
    android:numStars="5"
    android:rating="5"
    android:stepSize="1"
    android:layout_width="match_parent"
    android:layout_height="@dimen/base_29dp"
    android:layout_marginLeft="@dimen/base_120dp"
    android:layout_gravity="bottom|right" />

因此，总而言之，不要在自定义RatingBar的可绘制对象中设置背景（轨道）功能，而应在自定义RatingBar样式的layout_background功能中进行设置。这样可以确保轨道始终在水平RatingBar中垂直居中。（请记住，在此自定义的RatingBar中，我使用的是水平方向上“增长”或“收缩”的渐变线来显示等级-而不是使用星星或其他孤立的图像作为等级-该等级线使用类似于SeekBar的拇指在类似SeekBar的“轨道”上运行。）

— Epsilon3
source
0

您可以使用@erdomester的给定解决方案。但是，如果您面临评级栏高度的问题，则可以以编程方式使用评级栏的图标高度。

在科特林，

val drawable = ContextCompat.getDrawable(context, R.drawable.rating_filled)
val drawableHeight = drawable.intrinsicHeight

rating_bar.layoutParams.height = drawableHeight
— 基山·索兰基
source
我也遇到了这个问题，但是android:minHeight在布局中增加了。如果以编程方式更改，则应添加rating_bar.requestLayout()。
— CoolMind
-11

您可以使用默认图像为空的5张imageview作为默认图像，然后根据评分用一半或全部图像填充评分栏。

 public View getView(int position, View convertView, ViewGroup parent) {
     LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
     View grid=inflater.inflate(R.layout.griditem, parent, false);
     imageView=(ImageView)grid.findViewById(R.id.grid_prod);
     imageView.setImageResource(imgId[position]);
     imgoff =(ImageView)grid.findViewById(R.id.offer);
     tv=(TextView)grid.findViewById(R.id.grid_text);
     tv.setText(namesArr[position]);
     tv.setTextColor(Color.BLACK);
     tv.setPadding(0, 2, 0, 0);
   sta=(ImageView)grid.findViewById(R.id.imageView);
    sta1=(ImageView)grid.findViewById(R.id.imageView1);
    sta2=(ImageView)grid.findViewById(R.id.imageView2);
    sta3=(ImageView)grid.findViewById(R.id.imageView3);
    sta4=(ImageView)grid.findViewById(R.id.imageView4);
    Float rate=rateFArr[position];


   if(rate==5 || rate==4.5)
    {
        sta.setImageResource(R.drawable.full__small);
        sta1.setImageResource(R.drawable.full__small);
        sta2.setImageResource(R.drawable.full__small);
        sta3.setImageResource(R.drawable.full__small);
        if(rate==4.5)
        {
            sta4.setImageResource(R.drawable.half_small);
        }
        else
        {
            sta4.setImageResource(R.drawable.full__small);
        }
    }
    if(rate==4 || rate==3.5)
    {
        sta.setImageResource(R.drawable.full__small);
        sta1.setImageResource(R.drawable.full__small);
        sta2.setImageResource(R.drawable.full__small);
     if(rate==3.5)
        {
            sta3.setImageResource(R.drawable.half_small);
        }
        else
        {
            sta3.setImageResource(R.drawable.full__small);
        }
    }
    if(rate==3 || rate==2.5)
    {
        sta.setImageResource(R.drawable.full__small);
        sta1.setImageResource(R.drawable.full__small);
       if(rate==2.5)
        {
            sta2.setImageResource(R.drawable.half_small);
        }
        else
        {
            sta2.setImageResource(R.drawable.full__small);
        }
    }
    if(rate==2 || rate==1.5)
    {
    sta.setImageResource(R.drawable.full__small);
     if(rate==1.5)
        {
            sta1.setImageResource(R.drawable.half_small);
        }
        else
        {
            sta1.setImageResource(R.drawable.full__small);
        }
    }
    if(rate==1 || rate==0.5)
    {
        if(rate==1)
        sta.setImageResource(R.drawable.full__small);
        else
            sta.setImageResource(R.drawable.half_small);

    }
    if(rate>5)
    {
        sta.setImageResource(R.drawable.full__small);
        sta1.setImageResource(R.drawable.full__small);
        sta2.setImageResource(R.drawable.full__small);
        sta3.setImageResource(R.drawable.full__small);
        sta4.setImageResource(R.drawable.full__small);
    }

    // rb=(RatingBar)findViewById(R.id.grid_rating);
     //rb.setRating(rateFArr[position]);
        return grid;
    }
— 用户名
source
这不是这样做的方法。为此，它是RatingBar小部件。而且这不是OP所要求的。
— 2013年
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