枕上从妨一夜睡，灯前读尽十年诗。这篇文章主要讲述Android图表库MPAndroidChart——饼状图的扩展：折线饼状图相关的知识，希望能为你提供帮助。
android图表库MPAndroidChart(八)——饼状图的扩展：
折线饼状图
我们接着上文， 饼状图的扩展， 增加折现的说明， 来看下我们要实现的效果
文章图片
因为之前对MPAndroidChart的熟悉， 所有我们就可以直接来实现了一.基本实现
首先， 就是我们的来看下他的定义布局
<
com.github.mikephil.charting.charts.PieChart
android:id=
"
@
+
id/mPieChart"
android:layout_width=
"
match_parent"
android:layout_height=
"
0dp"
android:layout_weight=
"
1"
/>
嗯， 这里我们还是用PieChart， 那现在该干嘛就干嘛了
//折现饼状图
mPieChart =
(PieChart) findViewById(R.id.mPieChart);
mPieChart.setUsePercentValues(true);
mPieChart.getDescription().setEnabled(false);
mPieChart.setExtraOffsets(5, 10, 5, 5);
mPieChart.setDragDecelerationFrictionCoef(0.95f);
//绘制中间文字
mPieChart.setCenterText(generateCenterSpannableText());
mPieChart.setExtraOffsets(20.f, 0.f, 20.f, 0.f);
mPieChart.setDrawHoleEnabled(true);
mPieChart.setHoleColor(Color.WHITE);
mPieChart.setTransparentCircleColor(Color.WHITE);
mPieChart.setTransparentCircleAlpha(110);
mPieChart.setHoleRadius(58f);
mPieChart.setTransparentCircleRadius(61f);
mPieChart.setDrawCenterText(true);
mPieChart.setRotationAngle(0);
// 触摸旋转
mPieChart.setRotationEnabled(true);
mPieChart.setHighlightPerTapEnabled(true);
// 添加一个选择监听器
mPieChart.setOnChartValueSelectedListener(this);
//模拟数据
ArrayList<
PieEntry>
entries =
new ArrayList<
PieEntry>
();
entries.add(new PieEntry(40, "
优秀"
));
entries.add(new PieEntry(20, "
满分"
));
entries.add(new PieEntry(30, "
及格"
));
entries.add(new PieEntry(10, "
不及格"
));
//设置数据
setData(entries);
//默认动画
mPieChart.animateY(1400, Easing.EasingOption.EaseInOutQuad);
Legend l =
mPieChart.getLegend();
l.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);
l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
l.setOrientation(Legend.LegendOrientation.VERTICAL);
l.setDrawInside(false);
l.setEnabled(false);
少不了我们的设置数据
//设置数据
private void setData(ArrayList<
PieEntry>
entries) {
PieDataSet dataSet =
new PieDataSet(entries, "
三年级一班"
);
dataSet.setSliceSpace(3f);
dataSet.setSelectionShift(5f);
ArrayList<
Integer>
colors =
new ArrayList<
Integer>
();
for (int c : ColorTemplate.VORDIPLOM_COLORS)
colors.add(c);
for (int c : ColorTemplate.JOYFUL_COLORS)
colors.add(c);
for (int c : ColorTemplate.COLORFUL_COLORS)
colors.add(c);
for (int c : ColorTemplate.LIBERTY_COLORS)
colors.add(c);
for (int c : ColorTemplate.PASTEL_COLORS)
colors.add(c);
colors.add(ColorTemplate.getHoloBlue());
dataSet.setColors(colors);
dataSet.setValueLinePart1OffsetPercentage(80.f);
dataSet.setValueLinePart1Length(0.2f);
dataSet.setValueLinePart2Length(0.4f);
dataSet.setYValuePosition(PieDataSet.ValuePosition.OUTSIDE_SLICE);
PieData data =
new PieData(dataSet);
data.setValueFormatter(new PercentFormatter());
data.setValueTextSize(11f);
data.setValueTextColor(Color.BLACK);
mPieChart.setData(data);
// 撤销所有的亮点
mPieChart.highlightValues(null);
mPieChart.invalidate();
}这里， 可不能把中间文字给丢了
//绘制中心文字
private SpannableString generateCenterSpannableText() {
SpannableString s =
new SpannableString("
刘某人程序员\\n我仿佛听到有人说我帅"
);
//s.setSpan(new RelativeSizeSpan(1.5f), 0, 14, 0);
//s.setSpan(new StyleSpan(Typeface.NORMAL), 14, s.length() - 15, 0);
//s.setSpan(new ForegroundColorSpan(Color.GRAY), 14, s.length() - 15, 0);
//s.setSpan(new RelativeSizeSpan(.65f), 14, s.length() - 15, 0);
//s.setSpan(new StyleSpan(Typeface.ITALIC), s.length() - 14, s.length(), 0);
//s.setSpan(new ForegroundColorSpan(ColorTemplate.getHoloBlue()), s.length()-17, s.length(), 0);
return s;
}现在运行一下就可以了， 这个不难， 我们继续看他的实现二.显示百分比
文章图片
三.显示类型
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四.x轴动画
文章图片
五.y轴动画
文章图片
六.xy轴动画
文章图片
七.显示中间文字
文章图片
八.旋转动画
这里代码贴上activity_pie_line.xml
<
?xml version=
"
1.0"
encoding=
"
utf-8"
?>
<
LinearLayout
xmlns:android=
"
http://schemas.android.com/apk/res/android"
android:layout_width=
"
match_parent"
android:layout_height=
"
match_parent"
android:orientation=
"
vertical"
>
<
com.github.mikephil.charting.charts.PieChart
android:id=
"
@
+
id/mPieChart"
android:layout_width=
"
match_parent"
android:layout_height=
"
0dp"
android:layout_weight=
"
1"
/>
<
!--还有显示描述等等-->
<
LinearLayout
android:layout_width=
"
match_parent"
android:layout_height=
"
wrap_content"
android:orientation=
"
horizontal"
>
<
Button
android:id=
"
@
+
id/btn_show_percentage"
android:layout_width=
"
wrap_content"
android:layout_height=
"
wrap_content"
android:text=
"
显示百分比"
/>
<
Button
android:id=
"
@
+
id/btn_show_type"
android:layout_width=
"
wrap_content"
android:layout_height=
"
wrap_content"
android:text=
"
是否铺满"
/>
<
Button
android:id=
"
@
+
id/btn_anim_x"
android:layout_width=
"
wrap_content"
android:layout_height=
"
wrap_content"
android:text=
"
X轴动画"
/>
<
Button
android:id=
"
@
+
id/btn_anim_y"
android:layout_width=
"
wrap_content"
android:layout_height=
"
wrap_content"
android:text=
"
Y轴动画"
/>
<
/LinearLayout>
<
LinearLayout
android:layout_width=
"
match_parent"
android:layout_height=
"
wrap_content"
android:orientation=
"
horizontal"
>
<
Button
android:id=
"
@
+
id/btn_anim_xy"
android:layout_width=
"
wrap_content"
android:layout_height=
"
wrap_content"
android:text=
"
XY轴动画"
/>
<
Button
android:id=
"
@
+
id/btn_show_center_text"
android:layout_width=
"
wrap_content"
android:layout_height=
"
wrap_content"
android:text=
"
显示中间文字"
/>
<
Button
android:id=
"
@
+
id/btn_save_pic"
android:layout_width=
"
wrap_content"
android:layout_height=
"
wrap_content"
android:text=
"
保存画廊"
/>
<
Button
android:id=
"
@
+
id/btn_anim_rotating"
android:layout_width=
"
wrap_content"
android:layout_height=
"
wrap_content"
android:text=
"
旋转动画"
/>
<
/LinearLayout>
<
/LinearLayout>
PiePolylineChartActivity
public class PiePolylineChartActivity extends BaseActivity implements OnChartValueSelectedListener, View.OnClickListener {private PieChart mPieChart;
//显示百分比
private Button btn_show_percentage;
//显示类型
private Button btn_show_type;
//x轴动画
private Button btn_anim_x;
//y轴动画
private Button btn_anim_y;
//xy轴动画
private Button btn_anim_xy;
//保存到sd卡
private Button btn_save_pic;
//显示中间文字
private Button btn_show_center_text;
//旋转动画
private Button btn_anim_rotating;
@
Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pie_line);
initView();
}//初始化
private void initView() {btn_show_percentage =
(Button) findViewById(R.id.btn_show_percentage);
btn_show_percentage.setOnClickListener(this);
btn_show_type =
(Button) findViewById(R.id.btn_show_type);
btn_show_type.setOnClickListener(this);
btn_anim_x =
(Button) findViewById(R.id.btn_anim_x);
btn_anim_x.setOnClickListener(this);
btn_anim_y =
(Button) findViewById(R.id.btn_anim_y);
btn_anim_y.setOnClickListener(this);
btn_anim_xy =
(Button) findViewById(R.id.btn_anim_xy);
btn_anim_xy.setOnClickListener(this);
btn_save_pic =
(Button) findViewById(R.id.btn_save_pic);
btn_save_pic.setOnClickListener(this);
btn_show_center_text =
(Button) findViewById(R.id.btn_show_center_text);
btn_show_center_text.setOnClickListener(this);
btn_anim_rotating =
(Button) findViewById(R.id.btn_anim_rotating);
btn_anim_rotating.setOnClickListener(this);
//折现饼状图
mPieChart =
(PieChart) findViewById(R.id.mPieChart);
mPieChart.setUsePercentValues(true);
mPieChart.getDescription().setEnabled(false);
mPieChart.setExtraOffsets(5, 10, 5, 5);
mPieChart.setDragDecelerationFrictionCoef(0.95f);
//绘制中间文字
mPieChart.setCenterText(generateCenterSpannableText());
mPieChart.setExtraOffsets(20.f, 0.f, 20.f, 0.f);
mPieChart.setDrawHoleEnabled(true);
mPieChart.setHoleColor(Color.WHITE);
mPieChart.setTransparentCircleColor(Color.WHITE);
mPieChart.setTransparentCircleAlpha(110);
mPieChart.setHoleRadius(58f);
mPieChart.setTransparentCircleRadius(61f);
mPieChart.setDrawCenterText(true);
mPieChart.setRotationAngle(0);
// 触摸旋转
mPieChart.setRotationEnabled(true);
mPieChart.setHighlightPerTapEnabled(true);
// 添加一个选择监听器
mPieChart.setOnChartValueSelectedListener(this);
//模拟数据
ArrayList<
PieEntry>
entries =
new ArrayList<
PieEntry>
();
entries.add(new PieEntry(40, "
优秀"
));
entries.add(new PieEntry(20, "
满分"
));
entries.add(new PieEntry(30, "
及格"
));
entries.add(new PieEntry(10, "
不及格"
));
//设置数据
setData(entries);
//默认动画
mPieChart.animateY(1400, Easing.EasingOption.EaseInOutQuad);
Legend l =
mPieChart.getLegend();
l.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);
l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
l.setOrientation(Legend.LegendOrientation.VERTICAL);
l.setDrawInside(false);
l.setEnabled(false);
}//设置数据
private void setData(ArrayList<
PieEntry>
entries) {
PieDataSet dataSet =
new PieDataSet(entries, "
三年级一班"
);
dataSet.setSliceSpace(3f);
dataSet.setSelectionShift(5f);
ArrayList<
Integer>
colors =
new ArrayList<
Integer>
();
for (int c : ColorTemplate.VORDIPLOM_COLORS)
colors.add(c);
for (int c : ColorTemplate.JOYFUL_COLORS)
colors.add(c);
for (int c : ColorTemplate.COLORFUL_COLORS)
colors.add(c);
for (int c : ColorTemplate.LIBERTY_COLORS)
colors.add(c);
for (int c : ColorTemplate.PASTEL_COLORS)
colors.add(c);
colors.add(ColorTemplate.getHoloBlue());
dataSet.setColors(colors);
dataSet.setValueLinePart1OffsetPercentage(80.f);
dataSet.setValueLinePart1Length(0.2f);
dataSet.setValueLinePart2Length(0.4f);
dataSet.setYValuePosition(PieDataSet.ValuePosition.OUTSIDE_SLICE);
PieData data =
new PieData(dataSet);
data.setValueFormatter(new PercentFormatter());
data.setValueTextSize(11f);
data.setValueTextColor(Color.BLACK);
mPieChart.setData(data);
// 撤销所有的亮点
mPieChart.highlightValues(null);
mPieChart.invalidate();
}//绘制中心文字
private SpannableString generateCenterSpannableText() {
SpannableString s =
new SpannableString("
刘某人程序员\\n我仿佛听到有人说我帅"
);
//s.setSpan(new RelativeSizeSpan(1.5f), 0, 14, 0);
//s.setSpan(new StyleSpan(Typeface.NORMAL), 14, s.length() - 15, 0);
//s.setSpan(new ForegroundColorSpan(Color.GRAY), 14, s.length() - 15, 0);
//s.setSpan(new RelativeSizeSpan(.65f), 14, s.length() - 15, 0);
//s.setSpan(new StyleSpan(Typeface.ITALIC), s.length() - 14, s.length(), 0);
//s.setSpan(new ForegroundColorSpan(ColorTemplate.getHoloBlue()), s.length()-17, s.length(), 0);
return s;
}@
Override
public void onValueSelected(Entry e, Highlight h) {}@
Override
public void onNothingSelected() {}@
Override
public void onClick(View v) {
switch (v.getId()) {
//显示百分比
case R.id.btn_show_percentage:
for (IDataSet<
?>
set : mPieChart.getData().getDataSets())
set.setDrawValues(!set.isDrawValuesEnabled());
mPieChart.invalidate();
break;
//显示类型
case R.id.btn_show_type:
if (mPieChart.isDrawHoleEnabled())
mPieChart.setDrawHoleEnabled(false);
else
mPieChart.setDrawHoleEnabled(true);
mPieChart.invalidate();
break;
//x轴动画
case R.id.btn_anim_x:
mPieChart.animateX(1400);
break;
//y轴动画
case R.id.btn_anim_y:
mPieChart.animateY(1400);
break;
//xy轴动画
case R.id.btn_anim_xy:
mPieChart.animateXY(1400, 1400);
break;
//保存到sd卡
case R.id.btn_save_pic:
mPieChart.saveToPath("
title"
+
System.currentTimeMillis(), "
"
);
break;
//显示中间文字
case R.id.btn_show_center_text:
if (mPieChart.isDrawCenterTextEnabled())
mPieChart.setDrawCenterText(false);
else
mPieChart.setDrawCenterText(true);
mPieChart.invalidate();
break;
//旋转动画
case R.id.btn_anim_rotating:
mPieChart.spin(1000, mPieChart.getRotationAngle(), mPieChart.getRotationAngle() +
360, Easing.EasingOption
.EaseInCubic);
break;
}
}
}
【Android图表库MPAndroidChart——饼状图的扩展（折线饼状图）】好的， 是不是很简单有兴趣的加群： 555974449 Sample:http://download.csdn.net/detail/qq_26787115/9689868
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