在Android上启用与图表(放大/缩小) MPAndroidChart的交互

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

chart.setPinchZoom(true);
chart.setDoubleTapToZoomEnabled(true);

chart.setData(data);

import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import com.github.mikephil.charting.charts.LineChart;
import com.github.mikephil.charting.components.Description;
import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.data.LineData;
import com.github.mikephil.charting.data.LineDataSet;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private LineChart chart;

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

        chart = findViewById(R.id.chart);

        List<Entry> entries = new ArrayList<>();
        entries.add(new Entry(0, 4));
        entries.add(new Entry(1, 8));
        entries.add(new Entry(2, 6));
        entries.add(new Entry(3, 2));
        entries.add(new Entry(4, 7));

        LineDataSet dataSet = new LineDataSet(entries, "Data");
        LineData data = new LineData(dataSet);

        chart.setData(data);
        chart.setPinchZoom(true);
        chart.setDoubleTapToZoomEnabled(true);

        Description description = new Description();
        description.setText("Chart Description");
        chart.setDescription(description);

        chart.invalidate();
    }
}