可触摸操作的饼图
拖动旋转,点击高亮及惯性动画
中空模式
allprojects {
repositories {
...
maven { url 'https://jitpack.io' }
}
}dependencies {
implementation 'com.github.oneAcorn:cakeview:1.0'
} <com.acorn.library.PieView
android:id="@+id/pieView"
android:layout_width="match_parent"
android:layout_height="300dp"
/>普通模式饼图
//简单示例,更多参数请下载代码,并参看PieActivity内demo.
List<PieEntry> pieEntries = new ArrayList<>();
//参数1:扇形区域占比,参数2:饼图内文字,参数3:指示线文字
pieEntries.add(new PieEntry(0.23f, "北美 23%", "$327亿"));
pieEntries.add(new PieEntry(0.04f, "拉丁美洲 4%", "$50亿"));
pieEntries.add(new PieEntry(0.52f, "亚太地区 52%", "$714亿"));
pieEntries.add(new PieEntry(0.21f, "欧洲,中东和非洲 21%", "$287亿"));
mPieView.setPieEntries(pieEntries);中空模式饼图
//简单示例,更多参数请下载代码,并参看PieActivity内demo.
List<HollowPieEntry> pieEntries = new ArrayList<>();
//参数1:扇形区域占比,参数2:饼图内文字,参数3:指示线文字
pieEntries.add(new HollowPieEntry(0.23f, "北美 23%", "$327亿"));
pieEntries.add(new HollowPieEntry(0.04f, "拉丁美洲 4%", "$50亿"));
pieEntries.add(new HollowPieEntry(0.52f, "亚太地区 52%", "$714亿"));
pieEntries.add(new HollowPieEntry(0.21f, "欧洲,中东和非洲 21%", "$287亿"));
mPieView.setHollowPieEntries(pieEntries);按筛选条件显示/隐藏文字
- 1 只显示占比大于等于15%的饼图内文字
- 2 只显示占比小于15%的指示线文字
//大于等于0.15的显示饼图内文字
mPieView.setPieTextVisibleFilter(new PieTextVisibleFilter<PieEntry>() {
@Override
public boolean isShowText(PieEntry pieEntry) {
return Float.compare(pieEntry.getValue(), 0.15f) == 1 || Float.compare(pieEntry.getValue(), 0.15f) == 0;
}
});
//小于0.15的显示指示线
mPieView.setPieIndicateTextVisibleFilter(new PieTextVisibleFilter<PieEntry>() {
@Override
public boolean isShowText(PieEntry pieEntry) {
return Float.compare(pieEntry.getValue(), 0.15f) == -1;
}
});去掉点击高亮效果
mPieView.setHighlightEnable(false);关闭点击高亮区域时自动收回其他区域的效果
mPieView.setAutoUnpressOther(false);如果想实现自己的饼图
- 1 需要先继承抽象类BaseSectorDrawable,实现其中必要的抽象方法,可参照SectorDrawable/HollowSectorDrawable
- 2 继承抽象类BaseTextDrawable,饼图内文字(SectorTextDrawable/HollowSectorDrawable) 和指示线文字(SectorIndicateTextDrawable/HollowSectorIndicateTextDrawable)都是该抽象类的子类,可供参考.
- 3 BaseSectorDrawable和BaseTextDrawable的绑定通过调用BaseSectorDrawable内的方法设置监听器
public <K extends OnSectorChangeListener<T>> void addOnSectorChangeListener(K onSectorChangeListener) {
if (null == mOnSectorChangeListeners)
mOnSectorChangeListeners = new ArrayList<>();
mOnSectorChangeListeners.add(onSectorChangeListener);
}然后通过BaseTextDrawable内的抽象方法
public abstract void setTextPoint(T pieEntry, int cx, int cy, int radius, int source);通知文字Drawable扇形区域的初始化,旋转,高亮等的状态变化,请自行根据扇形区状态更新文字状态
- 4 可根据自己需要继承PieEntry后,新增必要的参数
- 5 最后调用PieView内方法,该方法通过工厂模式生成相应的扇形区,饼图内文字,指示线文字Drawable,请自行实现工厂生成接口
/**
*
* @param pieEntries 饼图实体
* @param sectorFactory 饼图工厂
* @param pieTextFactory 饼图内文字工厂
* @param pieIndicateTextFactory 指示线文字工厂
*/
public <T extends PieEntry, K extends BaseSectorDrawable, U extends BaseTextDrawable, E extends BaseTextDrawable>
void setPieEntries(List<T> pieEntries, SectorFactory<T, ? super K> sectorFactory, PieTextFactory<? super U> pieTextFactory, PieTextFactory<? super E> pieIndicateTextFactory) {
if (null == pieEntries || pieEntries.isEmpty()) {
throw new IllegalStateException("pieEntries is null or empty");
}
ensureSectorDrawables(revisePieEntries(pieEntries), sectorFactory, pieTextFactory, pieIndicateTextFactory);
invalidate();
}可参照中空模式饼图的实现
setPieEntries(pieEntries, new SectorFactory<HollowPieEntry, HollowSectorDrawable>() {
@Override
public HollowSectorDrawable createSector(@NonNull HollowPieEntry pieEntry, int position) {
return new HollowSectorDrawable(pieEntry);
}
}, new PieTextFactory<HollowSectorTextDrawable>() {
@Override
public HollowSectorTextDrawable createPieText() {
return new HollowSectorTextDrawable(getContext());
}
}, new PieTextFactory<HollowSectorIndicateTextDrawable>() {
@Override
public HollowSectorIndicateTextDrawable createPieText() {
return new HollowSectorIndicateTextDrawable(getContext());
}
});