第三方开源库--＞MaterialRatingBar（星级控件）

Posted 2022-05-09 Kevin-Dev

MaterialRatingBar，外观更好，兼容android 3.0+。

优点

• 在 Android 3.0+ 上保持一致的外观。
• 扩展框架 RatingBar。
• 获取 Material Icons 和 Google 应用程序中的 2dp 星形边框背景。
• 跨平台更正自定义着色。
• 当 layout_width 设置为 match_parent 时能够正确呈现，如在 Google Play 商店中。
• 当 layout_height 设置为 16dp、36dp 和 48dp 以外的值时，能够正确缩放。
• 能够正确显示 4.3 等评分，框架的错误实现会被填充到 4.5。
• 避免框架下沉的半星视觉故障。
• 用作框架 RatingBar 的替代品。

使用

1. 添加依赖

implementation 'me.zhanghai.android.materialratingbar:library:1.4.0'

2. 布局文件

<?xml version="1.0" encoding="utf-8"?>
<ScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingLeft="@dimen/screen_edge_horizontal_margin"
        android:paddingRight="@dimen/screen_edge_horizontal_margin"
        android:paddingTop="@dimen/screen_edge_vertical_margin"
        android:paddingBottom="@dimen/screen_edge_vertical_margin"
        android:orientation="vertical">

        <!-- Normal Layout -->

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/normal_layout"
            android:textAppearance="@style/TextAppearance.AppCompat.Subhead" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/framework_implementation"
            android:textAppearance="@style/TextAppearance.AppCompat.Caption" />

        <RatingBar
            android:id="@+id/framework_normal_ratingbar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:minHeight="48dp"
            android:maxHeight="48dp"
            android:layout_marginLeft="-4dp"
            android:layout_marginRight="-4dp"
            android:rating="2.5" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/library_implementation"
            android:textAppearance="@style/TextAppearance.AppCompat.Caption" />

        <me.zhanghai.android.materialratingbar.MaterialRatingBar
            android:id="@+id/library_normal_ratingbar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="-3dp"
            android:layout_marginRight="-3dp"
            android:rating="2.5"
            style="@style/Widget.MaterialRatingBar.RatingBar" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/library_implementation_tinted"
            android:textAppearance="@style/TextAppearance.AppCompat.Caption" />

        <me.zhanghai.android.materialratingbar.MaterialRatingBar
            android:id="@+id/library_tinted_normal_ratingbar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="-3dp"
            android:layout_marginRight="-3dp"
            android:rating="2.5"
            app:mrb_progressTint="@color/tint"
            app:mrb_secondaryProgressTint="@color/tint"
            style="@style/Widget.MaterialRatingBar.RatingBar" />

        <!-- Wide Layout -->

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/wide_layout"
            android:textAppearance="@style/TextAppearance.AppCompat.Subhead" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/framework_implementation"
            android:textAppearance="@style/TextAppearance.AppCompat.Caption" />

        <RatingBar
            android:id="@+id/framework_wide_ratingbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:minHeight="48dp"
            android:maxHeight="48dp"
            android:rating="2.5" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/library_implementation"
            android:textAppearance="@style/TextAppearance.AppCompat.Caption" />

        <me.zhanghai.android.materialratingbar.MaterialRatingBar
            android:id="@+id/library_wide_ratingbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:rating="2.5"
            style="@style/Widget.MaterialRatingBar.RatingBar" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/library_implementation_tinted"
            android:textAppearance="@style/TextAppearance.AppCompat.Caption" />

        <me.zhanghai.android.materialratingbar.MaterialRatingBar
            android:id="@+id/library_tinted_wide_ratingbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:rating="2.5"
            app:mrb_progressTint="@color/tint"
            app:mrb_secondaryProgressTint="@color/tint"
            style="@style/Widget.MaterialRatingBar.RatingBar" />

        <!-- Decimal step size -->

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/decimal_step_size"
            android:textAppearance="@style/TextAppearance.AppCompat.Subhead" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/framework_implementation"
            android:textAppearance="@style/TextAppearance.AppCompat.Caption" />

        <RatingBar
            android:id="@+id/framework_decimal_ratingbar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:minHeight="48dp"
            android:maxHeight="48dp"
            android:stepSize="0.01"
            android:isIndicator="true" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/library_implementation"
            android:textAppearance="@style/TextAppearance.AppCompat.Caption" />

        <me.zhanghai.android.materialratingbar.MaterialRatingBar
            android:id="@+id/library_decimal_ratingbar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:stepSize="0.01"
            style="@style/Widget.MaterialRatingBar.RatingBar.Indicator" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/library_implementation_tinted"
            android:textAppearance="@style/TextAppearance.AppCompat.Caption" />

        <me.zhanghai.android.materialratingbar.MaterialRatingBar
            android:id="@+id/library_tinted_decimal_ratingbar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:stepSize="0.01"
            app:mrb_progressTint="@color/tint"
            style="@style/Widget.MaterialRatingBar.RatingBar.Indicator" />
    </LinearLayout>
</ScrollView>

3. 使用

public class MainActivity extends AppCompatActivity 
    @BindViews(
            R.id.framework_decimal_ratingbar,
            R.id.library_decimal_ratingbar,
            R.id.library_tinted_decimal_ratingbar
    )
    RatingBar[] mDecimalRatingBars;

    @Override
    protected void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ButterKnife.bind(this);

        mDecimalRatingBars[0].startAnimation(new RatingAnimation());
    


    private class RatingAnimation extends Animation 

        public RatingAnimation() 
            setDuration(mDecimalRatingBars[0].getNumStars()
                    * 4 * getResources().getInteger(android.R.integer.config_longAnimTime));
            setInterpolator(new LinearInterpolator());
            setRepeatCount(Animation.INFINITE);
        

        @Override
        protected void applyTransformation(float interpolatedTime, Transformation t) 
            int progress = Math.round(interpolatedTime * mDecimalRatingBars[0].getMax());
            for (RatingBar ratingBar : mDecimalRatingBars) 
                ratingBar.setProgress(progress);
            
        

        @Override
        public boolean willChangeTransformationMatrix() 
            return false;
        

        @Override
        public boolean willChangeBounds() 
            return false;