java如何在饼图外显示测试

Question

我使用的是MP Android图表库，我想将文本视图隐藏在购物车内，并在图表外显示文本

像这样- image here

如何在饼图外部显示文本并隐藏其中的文本。 是否可以使用图像中显示的图像

我用过的代码-

@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); PieChart pieChart = (PieChart) findViewById(R.id.piechart); pieChart.setUsePercentValues(true); datatext = (TextView)findViewById(R.id.datatext); datatitle = (TextView)findViewById(R.id.datatitle); // IMPORTANT: In a PieChart, no values (Entry) should have the same // xIndex (even if from different DataSets), since no values can be // drawn above each other. ArrayList<Entry> yvalues = new ArrayList<Entry>(); yvalues.add(new Entry(24f, 0)); yvalues.add(new Entry(15f, 1)); yvalues.add(new Entry(19f, 2)); yvalues.add(new Entry(22f, 3)); yvalues.add(new Entry(20f, 4)); //yvalues.add(new Entry(17f, 5)); PieDataSet dataSet = new PieDataSet(yvalues, "Balances"); ArrayList<String> xVals = new ArrayList<String>(); xVals.add("Monthly Expenses"); xVals.add("Phonepe"); xVals.add("Uber"); xVals.add("Paytm"); xVals.add("Savings"); // xVals.add("Ola"); dataSet.setDrawValues(false); PieData data = new PieData(xVals, dataSet); // In Percentage term data.setValueFormatter(new PercentFormatter()); // Default value //data.setValueFormatter(new DefaultValueFormatter(0)); pieChart.setData(data); pieChart.setDescription("Savings"); pieChart.setDrawHoleEnabled(true); pieChart.setTransparentCircleRadius(25f); pieChart.setHoleRadius(25f); dataSet.setColors(ColorTemplate.VORDIPLOM_COLORS); data.setValueTextSize(13f); data.setValueTextColor(Color.DKGRAY); pieChart.setOnChartValueSelectedListener(this); pieChart.animateXY(1400, 1400); } @Override public void onValueSelected(Entry e, int dataSetIndex, Highlight h) { if (e == null) return; Log.i("VAL SELECTED", "Value: " + e.getVal() + ", xIndex: " + e.getXIndex() + ", DataSet index: " + dataSetIndex); float datatt = e.getVal(); Toast.makeText(this, ""+datatt, Toast.LENGTH_SHORT).show(); datatext.setText(""+datatt); //datatitle.setText(""+title); }

Answer 1

我很乐意帮助你

试试这个

第一步：（项目）

 maven { url 'https://jitpack.io' }

第2步：（模块）

 implementation 'com.github.PhilJay:MPAndroidChart:v3.1.0'

第3步：（activity_main.xml）

<androidx.constraintlayout.widget.ConstraintLayout 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">

    <com.github.mikephil.charting.charts.PieChart
        android:id="@+id/chart1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        />

</androidx.constraintlayout.widget.ConstraintLayout>

步骤4：（MainActivity.java）

package com.jdevio.test;

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Color;
import android.os.Bundle;


import com.github.mikephil.charting.charts.PieChart;
import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.data.PieData;
import com.github.mikephil.charting.data.PieDataSet;
import com.github.mikephil.charting.data.PieEntry;
import com.github.mikephil.charting.highlight.Highlight;
import com.github.mikephil.charting.listener.OnChartValueSelectedListener;
import com.github.mikephil.charting.utils.ColorTemplate;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity implements
        OnChartValueSelectedListener {
    PieChart pieChart ;
    ArrayList<PieEntry> entries ;
    ArrayList<String> PieEntryLabels ;
    PieDataSet pieDataSet ;
    PieData pieData ;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        entries = new ArrayList<PieEntry>();

      pieChart=(PieChart)findViewById(R.id.chart1);

        PieEntryLabels = new ArrayList<String>();

        AddValuesToPIEENTRY();



        PieDataSet dataSet = new PieDataSet(entries, "Money Bank 2019");

        dataSet.setColors(ColorTemplate.VORDIPLOM_COLORS);
        dataSet.setSliceSpace(2f);
        dataSet.setValueTextColor(Color.WHITE);
        dataSet.setValueTextSize(12f);

        PieData pdataSet = new PieData(dataSet);

        pieChart.setData(pdataSet);

        pieChart.animateY(300);

    }

    public void AddValuesToPIEENTRY(){

        entries.add(new PieEntry(24f, "Monthly Expenses  " ));
        entries.add(new PieEntry(15f, "Phonepe"));
        entries.add(new PieEntry(19f, "Uber"));
        entries.add(new PieEntry(22f, "Paytm"));
        entries.add(new PieEntry(20f, "Savings"));
        entries.add(new PieEntry(17f, "Ola"));

    }



    @Override
    public void onValueSelected(Entry e, Highlight h) {

       // selected value

    }


    @Override
    public void onNothingSelected() {

    }
}

如果有效，请重播我

谢谢
亚什·谢哈达