Android 优秀图标库MPAndroidChart之柱状图（适应百分之八十项目需求）
作者：互联网
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DO NOT USE, only for backwards compatibility and will be removed in future versions.
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@param value the value to be formatted
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@param entry the entry the value belongs to - in e.g. BarChart, this is of class BarEntry
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@param dataSetIndex the index of the DataSet the entry in focus belongs to
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@param viewPortHandler provides information about the current chart state (scale, translation, …)
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@return formatted string label
*/
@Override
@Deprecated
public String getFormattedValue(float value, Entry entry, int dataSetIndex, ViewPortHandler viewPortHandler) {
return getFormattedValue(value);
}
/**
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Called when drawing any label, used to change numbers into formatted strings.
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@param value float to be formatted
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@return formatted string label
*/
public String getFormattedValue(float value) {
return String.valueOf(value);
}
/**
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Used to draw axis labels, calls {@link #getFormattedValue(float)} by default.
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@param value float to be formatted
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@param axis axis being labeled
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@return formatted string label
*/
public String getAxisLabel(float value, AxisBase axis) {
return getFormattedValue(value);
}
/**
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Used to draw bar labels, calls {@link #getFormattedValue(float)} by default.
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@param barEntry bar being labeled
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@return formatted string label
*/
public String getBarLabel(BarEntry barEntry) {
return getFormattedValue(barEntry.getY());
}
/**
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Used to draw stacked bar labels, calls {@link #getFormattedValue(float)} by default.
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@param value current value to be formatted
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@param stackedEntry stacked entry being labeled, contains all Y values
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@return formatted string label
*/
public String getBarStackedLabel(float value, BarEntry stackedEntry) {
return getFormattedValue(value);
}
/**
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Used to draw line and scatter labels, calls {@link #getFormattedValue(float)} by default.
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@param entry point being labeled, contains X value
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@return formatted string label
*/
public String getPointLabel(Entry entry) {
return getFormattedValue(entry.getY());
}
/**
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Used to draw pie value labels, calls {@link #getFormattedValue(float)} by default.
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@param value float to be formatted, may have been converted to percentage
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@param pieEntry slice being labeled, contains original, non-percentage Y value
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@return formatted string label
*/
public String getPieLabel(float value, PieEntry pieEntry) {
return getFormattedValue(value);
}
/**
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Used to draw radar value labels, calls {@link #getFormattedValue(float)} by default.
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@param radarEntry entry being labeled
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@return formatted string label
*/
public String getRadarLabel(RadarEntry radarEntry) {
return getFormattedValue(radarEntry.getY());
}
/**
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Used to draw bubble size labels, calls {@link #getFormattedValue(float)} by default.
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@param bubbleEntry bubble being labeled, also contains X and Y values
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@return formatted string label
*/
public String getBubbleLabel(BubbleEntry bubbleEntry) {
return getFormattedValue(bubbleEntry.getSize());
}
/**
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Used to draw high labels, calls {@link #getFormattedValue(float)} by default.
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@param candleEntry candlestick being labeled
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@return formatted string label
*/
public String getCandleLabel(CandleEntry candleEntry) {
return getFormattedValue(candleEntry.getHigh());
}
}
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第四步：MyValueFormatter
public class MyValueFormatter extends ValueFormatter{
private final DecimalFormat mFormat;
private String suffix;
public MyValueFormatter(String suffix) {
mFormat = new DecimalFormat(“0000”);
this.suffix = suffix;
}
@Override
public String getFormattedValue(float value) {
return mFormat.format(value) + suffix;
}
@Override
public String getAxisLabel(float value, AxisBase axis) {
if (axis instanceof XAxis) {
return mFormat.format(value);
} else if (value > 0) {
return mFormat.format(value) + suffix;
} else {
return mFormat.format(value);
}
}
}
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第五步：MainAcyivity
package detongs.hbqianze.him.linechart;
import android.os.Bundle;
import android.util.Log;
import android.view.WindowManager;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;
import com.github.mikephil.charting.charts.BarChart;
import com.github.mikephil.charting.components.XAxis;
import com.github.mikephil.charting.components.YAxis;
import com.github.mikephil.charting.data.BarData;
import com.github.mikephil.charting.data.BarDataSet;
import com.github.mikephil.charti
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ng.data.BarEntry;
import com.github.mikephil.charting.interfaces.datasets.IBarDataSet;
import com.github.mikephil.charting.interfaces.datasets.IDataSet;
import com.github.mikephil.charting.utils.ColorTemplate;
import java.util.ArrayList;
import detongs.hbqianze.him.linechart.chart.MyValueFormatter;
import detongs.hbqianze.him.linechart.chart.ValueFormatter;
public class MainActivity extends AppCompatActivity {
private BarChart chart;
private TextView te_cache;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_main);
chart = findViewById(R.id.chart1);
te_cache = findViewById(R.id.te_cache);
chart.getDescription().setEnabled(false);
//设置最大值条目，超出之后不会有值
chart.setMaxVisibleValueCount(60);
//分别在x轴和y轴上进行缩放
chart.setPinchZoom(true);
//设置剩余统计图的阴影
chart.setDrawBarShadow(false);
//设置网格布局
chart.setDrawGridBackground(true);
//通过自定义一个x轴标签来实现2,015 有分割符符bug
ValueFormatter custom = new MyValueFormatter(" ");
//获取x轴线
XAxis xAxis = chart.getXAxis();
//设置x轴的显示位置
xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
//设置网格布局
xAxis.setDrawGridLines(true);
//图表将避免第一个和最后一个标签条目被减掉在图表或屏幕的边缘
xAxis.setAvoidFirstLastClipping(false);
//绘制标签 指x轴上的对应数值 默认true
xAxis.setDrawLabels(true);
xAxis.setValueFormatter(custom);
//缩放后x 轴数据重叠问题
xAxis.setGranularityEnabled(true);
//获取右边y标签
标签：getFormattedValue,return,图标库,float,MPAndroidChart,value,柱状图,param,import 来源： https://blog.csdn.net/m0_64604842/article/details/122153862