我正在实现Piechart，我想在切片选择上显示Markerview，就像在Barchart中一样。所以我为Piechart设置了Markerview。
mChart = (PieChart) findViewById(R.id.chart1);
MyMarkerView mv = new MyMarkerView(this, R.layout.custom_marker_view);
mChart.setMarkerView(mv);
mChart.getMarkerView().setEnabled(true);
我不想自定义Markerview。我使用与BarChart相同的Markerview。 我甚至删除了chartValueSelectedListener。
//mChart.setOnChartValueSelectedListener(this);
但是标记视图不可见。
答案 0 :(得分：1)
对不起，文档中没有明确说明。
但PieCharts和HorizontalBarChart目前不支持MarkerView。它是唯一尚未使用的图表类型。
<强>更新：
由于MarkerView PieChart 现已支持，因此HorizontalBarChart和try {
$p = new PDFlib();
# This means we must check return values of load_font() etc.
$p->set_option("errorpolicy=return");
/* Enable the following line if you experience crashes on OS X
* (see PDFlib-in-PHP-HowTo.pdf for details):
* $p->set_option("usehostfonts=false");
*/
/* all strings are expected as utf8 */
$p->set_option("stringformat=utf8");
/* open new PDF file; insert a file name to create the PDF on disk */
if ($p->begin_document("", "") == 0) {
die("Error: " . $p->get_errmsg());
}
$p->set_info("Creator", "hello.php");
$p->set_info("Author", "Rainer Schaaf");
$p->set_info("Title", "Hello world (PHP)!");
$p->begin_page_ext(595, 842, "");
$font = $p->load_font("Helvetica-Bold", "unicode", "");
if ($font == 0) {
die("Error: " . $p->get_errmsg());
}
$p->setfont($font, 24.0);
$p->set_text_pos(50, 700);
$p->show("Hello world!");
$p->continue_text("(says PHP)");
$p->end_page_ext("");
$p->end_document("");
$buf = $p->get_buffer();
$len = strlen($buf);
header("Content-type: application/pdf");
header("Content-Length: $len");
header("Content-Disposition: inline; filename=hello.pdf");
print $buf;
}
catch (PDFlibException $e) {
die("PDFlib exception occurred in hello sample:\n" .
"[" . $e->get_errnum() . "] " . $e->get_apiname() . ": " .
$e->get_errmsg() . "\n");
}
catch (Exception $e) {
die($e);
}
$p = 0;`
也是如此。