dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar', '*.har'])
      implementation project(':PercentageChartView')
    ……
}

    <com.ramijemli.percentagechartview.PercentageChartView
        ohos:id="@+id/view_id"
        ohos:layout_width="match_parent"
        ohos:layout_height="match_parent"
        app:pcv_mode="pie"
        app:pcv_orientation="counter_clockwise"
        app:pcv_animDuration="800"
        app:pcv_animInterpolator="anticipate_overshoot"
        app:pcv_progress="10"
        app:pcv_startAngle="90"/>

    mChart.textColor(Color.BLACK)  
          .textSize(sizeSp)  
          .typeface(typeface)  
          .textShadow(Color.WHITE, 2f, 2f, 2f)  
          .progressColor(Color.RED)  
          .backgroundColor(Color.BLACK)  
      .apply();

AdaptiveColorProvider colorProvider = new AdaptiveColorProvider() {  
    @Override  
    public int provideProgressColor(float progress) {  
        if (progress <= 25)  
            return colorOne;  
        else if (progress <= 50)  
            return colorTwo;  
        else if (progress <= 75)  
            return colorThree;  
        else return colorFour;  
    }
  
    @Override  
    public int provideBackgroundColor(float progress) {  
        //This will provide a bg color that is 80% darker than progress color.
        return ColorUtils.blendARGB(provideProgressColor(progress), Color.BLACK, .8f);  
    }  
  
    @Override  
    public int provideTextColor(float progress) {  
        return provideProgressColor(progress);  
    }
  
    @Override  
    public int provideBackgroundBarColor(float progress) {  
        return ColorUtils.blendARGB(provideProgressColor(progress), Color.BLACK, .5f);  
    }  
};

mPieChart.setAdaptiveColorProvider(colorProvider);

chart.setOnProgressChangeListener(new PercentageChartView.OnProgressChangeListener() {
    @Override
    public void onProgressChanged(float progress) {
        Log.d(TAG, String.valueOf(progress));
    }
});

mRingChart.setTextFormatter(new ProgressTextFormatter() {  
    @Override  
    public String provideFormattedText(float progress) {  
        int days = (int) (progress * maxDays / 100);  
        return days + " days";  
    }  
});

   Copyright 2019 Rami Jemli
   
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at
   
       http://www.apache.org/licenses/LICENSE-2.0
   
   Unless required by applicable law or agreed to in writing, 
   software distributed under the License is distributed on an "AS IS" BASIS, 
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
   See the License for the specific language governing permissions 
   and limitations under the License.