来自SQL查询的游标的Android Graph视图

Question

我有一个返回游标的数据库查询。我想使用http://www.android-graphview.org从该查询中绘制图形。

文档说这是用于创建图形的代码：

GraphView graph = (GraphView) findViewById(R.id.graph);
LineGraphSeries<DataPoint> series = new LineGraphSeries<>(new DataPoint[] {
          new DataPoint(0, 1),
          new DataPoint(1, 5),
          new DataPoint(2, 3)
});
graph.addSeries(series);

但是我想从游标中绘制图形，但是在 series [x] = new DataPoint 上出现错误“期望的数组类型”。

我的代码：

q = "SELECT _id, workout_diary_entry_set_a_weight, workout_diary_entry_set_a_reps FROM workout_diary_entries";
Cursor cursorEntries = db.rawQuery(q);
int countEntries = cursorEntries.getCount();

LineGraphSeries<DataPoint> series = new LineGraphSeries<>(new DataPoint[countEntries]);
for(int x =0;x<countEntries;x++){
    Double workoutDiaryEntrySetAWeight = cursorEntries.getDouble(1);
    Double workoutDiaryEntrySetAReps = cursorEntries.getDouble(2);
    series[x] = new DataPoint(workoutDiaryEntrySetAWeight, workoutDiaryEntrySetAReps);
    cursorEntries.moveToNext();
} // next
graphViewGraph.addSeries(series);