import com.github.mikephil.charting.formatter.DefaultValueFormatter; //导入依赖的package包/类
/**
 * calculates the required number of digits for the values that might be
 * drawn in the chart (if enabled), and creates the default-value-formatter
 */
protected void calculateFormatter(float min, float max) {

    float reference = 0f;

    if (mData == null || mData.getXValCount() < 2) {

        reference = Math.max(Math.abs(min), Math.abs(max));
    } else {
        reference = Math.abs(max - min);
    }

    int digits = Utils.getDecimals(reference);
    mDefaultFormatter = new DefaultValueFormatter(digits);
}
 

import com.github.mikephil.charting.formatter.DefaultValueFormatter; //导入依赖的package包/类
/**
 * If this component has no ValueFormatter or is only equipped with the
 * default one (no custom set), return true.
 *
 * @return
 */
public static boolean needsDefaultFormatter(ValueFormatter formatter) {
    if (formatter == null)
        return true;
    if (formatter instanceof DefaultValueFormatter)
        return true;

    return false;
}
 

import com.github.mikephil.charting.formatter.DefaultValueFormatter; //导入依赖的package包/类
/**
 * If this component has no YAxisValueFormatter or is only equipped with the default one (no custom set), return true.
 *
 * @return
 */
public boolean needsDefaultFormatter() {
    if (mYAxisValueFormatter == null)
        return true;
    if (mYAxisValueFormatter instanceof DefaultValueFormatter)
        return true;

    return false;
}
 

import com.github.mikephil.charting.formatter.DefaultValueFormatter; //导入依赖的package包/类
/**
 * If this component has no YAxisValueFormatter or is only equipped with the default one (no
 * custom set), return true.
 *
 * @return
 */
public boolean needsDefaultFormatter() {
    if (mYAxisValueFormatter == null)
        return true;
    if (mYAxisValueFormatter instanceof DefaultValueFormatter)
        return true;

    return false;
}
 

import com.github.mikephil.charting.formatter.DefaultValueFormatter; //导入依赖的package包/类
/**
 * If this component has no ValueFormatter or is only equipped with the
 * default one (no custom set), return true.
 *
 * @return
 */
public boolean needsDefaultFormatter() {
    if (mValueFormatter == null)
        return true;
    if (mValueFormatter instanceof DefaultValueFormatter)
        return true;

    return false;
}
 

import com.github.mikephil.charting.formatter.DefaultValueFormatter; //导入依赖的package包/类
/**
 * If this component has no YAxisValueFormatter or is only equipped with the default one (no custom set), return true.
 * 
 * @return
 */
public boolean needsDefaultFormatter() {
	if (mYAxisValueFormatter == null)
		return true;
	if (mYAxisValueFormatter instanceof DefaultValueFormatter)
		return true;

	return false;
}
 

import com.github.mikephil.charting.formatter.DefaultValueFormatter; //导入依赖的package包/类
/**
 * If this component has no ValueFormatter or is only equipped with the
 * default one (no custom set), return true.
 *
 * @return
 */
public static boolean needsDefaultFormatter(ValueFormatter formatter) {
    if (formatter == null)
        return true;
    return formatter instanceof DefaultValueFormatter;

}
 

import com.github.mikephil.charting.formatter.DefaultValueFormatter; //导入依赖的package包/类
/**
 * If this component has no YAxisValueFormatter or is only equipped with the default one (no
 * custom set), return true.
 *
 * @return
 */
public boolean needsDefaultFormatter() {
    if (mYAxisValueFormatter == null)
        return true;
    return mYAxisValueFormatter instanceof DefaultValueFormatter;

}
 

import com.github.mikephil.charting.formatter.DefaultValueFormatter; //导入依赖的package包/类
private static IValueFormatter generateDefaultValueFormatter() {
    final DefaultValueFormatter formatter = new DefaultValueFormatter(1);
    return formatter;
}
 

import com.github.mikephil.charting.formatter.DefaultValueFormatter; //导入依赖的package包/类
@Override
public ValueFormatter getValueFormatter() {
    if (mValueFormatter == null)
        return new DefaultValueFormatter(1);
    return mValueFormatter;
}
 

import com.github.mikephil.charting.formatter.DefaultValueFormatter; //导入依赖的package包/类
/**
 * Returns the formatter used for drawing the values inside the chart.
 *
 * @return
 */
public ValueFormatter getValueFormatter() {
    if (mValueFormatter == null)
        return new DefaultValueFormatter(1);
    return mValueFormatter;
}
 

import com.github.mikephil.charting.formatter.DefaultValueFormatter; //导入依赖的package包/类
@Override
public ValueFormatter getValueFormatter() {
    if (needsFormatter())
        return new DefaultValueFormatter(1);
    return mValueFormatter;
}