问题：
RecycerView中的MP折线图
徐星阑
在回收器视图中，我试图实现MP折线图。我有一个rest api，用于获取数据并将其保存在HashMap中。现在我想根据我的API响应来设置数据。请协助我在一个列表项目中创建一个线图。
public class MarketWatchSymbolAdapter extends RecyclerView.Adapter<MarketWatchSymbolAdapter.ViewHolder> {
private Symbol[] marketSymbol;
public Context context;
private ArrayList<String> rows = new ArrayList<String>();
private ArrayList<MarketFeedBean> arrList;
private Map<String, MarketFeedBean> watchList;
private List<String> keys = new ArrayList<>();
private Double changePercentage;
private static LineDataSet set1;
public static Drawable drawablePositive = ContextCompat.getDrawable(Logs.globalContext, R.drawable.graph_green_bg);
public static Drawable drawable_negative = ContextCompat.getDrawable(Logs.globalContext, R.drawable.graph_bg);
public MarketWatchSymbolAdapter(Symbol[] marketSymbol, Context context) {
this.marketSymbol = marketSymbol;
this.context = context;
notifyDataSetChanged();
}
public MarketWatchSymbolAdapter(Context context, ArrayList<MarketFeedBean> arrList) {
this.context = context;
this.arrList = arrList;
}
public MarketWatchSymbolAdapter(Context ctx, Map<String, MarketFeedBean> watchList) {
this.watchList = watchList;
this.context = ctx;
keys.addAll(watchList.keySet());
}
public MarketWatchSymbolAdapter(Context context) {
this.context = context;
}
@NonNull
@Override
public MarketWatchSymbolAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
View listItem= layoutInflater.inflate(R.layout.marketwatch_list_item, parent, false);
ViewHolder viewHolder = new ViewHolder(listItem);
return viewHolder;
}
@Override
public void onBindViewHolder(@NonNull MarketWatchSymbolAdapter.ViewHolder holder, int position) {
MarketFeedBean marketFeedBean = Logs.marketFeedBeanMap.get(rows.get(position));
if(marketFeedBean !=null) {
changePercentage = marketFeedBean.getChange() / (marketFeedBean.getLastTradePrice() - marketFeedBean.getChange()) * 100;
holder.indexName.setText(marketFeedBean.getMarket());
holder.scripName.setText(marketFeedBean.getScrip());
holder.SymbolName.setText(marketFeedBean.getScripName());
holder.indexValue.setText(Logs.priceFormat.format(marketFeedBean.getLastTradePrice()).replace("-", ""));
if(marketFeedBean.getChange() != 0.0) {
if (Logs.priceFormat.format(changePercentage).contains("-")) {
holder.indexChange.setBackgroundColor(context.getResources().getColor(R.color.red));
set1.setDrawFilled(true);
set1.setFillColor(Color.RED);
set1.setFillDrawable(drawable_negative);
set1.setHighLightColor(Color.RED);
set1.setColor(Color.RED);
}
else
{
holder.indexChange.setBackgroundColor(context.getResources().getColor(R.color.green));
set1.setDrawFilled(true);
set1.setFillColor(Color.GREEN);
set1.setFillDrawable(drawablePositive);
set1.setHighLightColor(Color.GREEN);
set1.setColor(Color.GREEN);
}
holder.indexChange.setText("(" + Logs.priceFormat.format(changePercentage).replace("-", "") + "%)");
}
else
{
holder.indexChange.setText("(0.00%)");
set1.setDrawFilled(true);
set1.setFillColor(Color.GREEN);
set1.setFillDrawable(drawablePositive);
set1.setHighLightColor(Color.GREEN);
set1.setColor(Color.GREEN);
}
}
else {
String sm = rows.get(position);
holder.indexName.setText(sm.split("\\:", -1)[1]);
holder.scripName.setText(sm.split("\\:", -1)[0]);
holder.SymbolName.setText("");
holder.indexValue.setText("0.00");
holder.indexChange.setText("(0.00%)");
}
}
@Override
public int getItemCount() {
if(rows == null){
return 0;
}
else {
return rows.size();
}
}
public synchronized void refill(ArrayList<String> data) {
this.rows.clear();
this.rows.addAll(data);
notifyDataSetChanged();
}
public static class ViewHolder extends RecyclerView.ViewHolder {
public TextView indexName;
public TextView SymbolName;
public TextView indexValue;
public AutoResizeTextView scripName;
public LineChart symbolChart;
public ImageButton imageButton;
private Button indexChange;
public CardView cardView;
public ArrayList<Entry> values;
public LineData data;
public Context context;
public String Scrip;
public String market;
public ViewHolder(View itemView) {
super(itemView);
context = itemView.getContext();
indexName = itemView.findViewById(R.id.symbolMarket);
scripName = itemView.findViewById(R.id.mainSymbolName);
SymbolName = itemView.findViewById(R.id.symbolName);
indexValue = itemView.findViewById(R.id.indexValue);
indexChange = itemView.findViewById(R.id.indexChange);
imageButton = itemView.findViewById(R.id.homeCross);
cardView = itemView.findViewById(R.id.crdlayout);
symbolChart = itemView.findViewById(R.id.marketwatchgraph);
setData(10,3f);
customiseChart();
cardView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
AppConfig.mktWatchlistIndex = getAdapterPosition();
Intent intent = new Intent(context, OrderActivity.class);
market = indexName.getText().toString();
Scrip = scripName.getText().toString();
intent.putExtra("scripName", Scrip);
intent.putExtra("marketName", market);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
});
imageButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
AppConfig.mktWatchlistIndex = getAdapterPosition();
onCrossClick();
}
});
}
private void customiseChart()
{
symbolChart.getDescription().setEnabled(false);
symbolChart.setDrawGridBackground(false);
symbolChart.setDragEnabled(false);
symbolChart.getLegend().setEnabled(false);
symbolChart.setScaleEnabled(true);
symbolChart.setScaleYEnabled(false);
symbolChart.setScaleXEnabled(true);
symbolChart.setDrawGridBackground(false);
symbolChart.getXAxis().setEnabled(false);
symbolChart.getLineData().setDrawValues(false);
symbolChart.getXAxis().setDrawGridLines(false);
symbolChart.getXAxis().setDrawAxisLine(false);
symbolChart.getAxisLeft().setDrawGridLines(false);
symbolChart.getAxisRight().setDrawGridLines(false);
symbolChart.getAxisRight().setDrawZeroLine(true);
symbolChart.getAxisLeft().setDrawZeroLine(true);
symbolChart.getAxisRight().setDrawLabels(false);
symbolChart.getAxisLeft().setDrawLabels(false);
symbolChart.getAxisLeft().setEnabled(false);
symbolChart.getAxisRight().setEnabled(true);
symbolChart.getAxisRight().setZeroLineColor(Color.BLACK);
symbolChart.getAxisRight().setAxisLineColor(Color.BLACK);
symbolChart.setMaxHighlightDistance(150);
symbolChart.setViewPortOffsets(0, 0, 0, 0);
symbolChart.setTouchEnabled(false);
symbolChart.setPinchZoom(false);
}
public void onCrossClick(){
MarketWatchFragment.getInstance().onRemoveItem();
}
private void setData(int count, float range) {
values = new ArrayList<>();
values.add(new Entry(1,10f));
values.add(new Entry(2,12f));
values.add(new Entry(3,8f));
values.add(new Entry(4,12f));
values.add(new Entry(5,3f));
values.add(new Entry(6,4f));
values.add(new Entry(7,4f));
values.add(new Entry(8,5f));
values.add(new Entry(9,2f));
values.add(new Entry(10,3f));
values.add(new Entry(11,9f));
values.add(new Entry(12,4f));
values.add(new Entry(13,7f));
values.add(new Entry(14,10));
set1 = new LineDataSet(values, "DataSet 1");
set1.setDrawCircles(false);
set1.setDrawFilled(true);
set1.setLineWidth(1f);
set1.setColor(Color.GREEN);
set1.setMode(LineDataSet.Mode.CUBIC_BEZIER);
set1.setDrawFilled(true);
set1.setFillDrawable(drawablePositive);
set1.setFillFormatter(new IFillFormatter() {
@Override
public float getFillLinePosition(ILineDataSet dataSet, LineDataProvider dataProvider) {
return symbolChart.getAxisLeft().getAxisMinimum();
}
});
ArrayList<ILineDataSet> dataSets = new ArrayList<>();
dataSets.add(set1);
data = new LineData(dataSets);
symbolChart.setData(data);
}
}
}
<androidx.cardview.widget.CardView xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/crdlayout"
android:background="@color/cardview_light_background"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_margin="5dp"
android:id="@+id/symbolName"
android:layout_width="250dp"
android:textSize="9sp"
android:layout_height="wrap_content"
android:text="LOTCHEM"
android:textColor="@color/black"/>
</LinearLayout>
<LinearLayout
android:id="@+id/listlayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="3">
<TextView
android:id="@+id/symbolMarket"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10sp"
android:layout_weight="0.35"
android:gravity="center"
android:singleLine="true"
android:text=""
android:textSize="15dp"
android:textStyle="bold" />
<com.catalyst.maksl.Components.AutoResizeTextView
android:id="@+id/mainSymbolName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginRight="2dp"
android:layout_marginLeft="2dp"
android:layout_weight="0.65"
android:gravity="left"
android:singleLine="true"
android:text=""
android:textSize="15dp"
/>
<com.github.mikephil.charting.charts.LineChart
android:id="@+id/marketwatchgraph"
android:layout_width="0dp"
android:layout_height="20dp"
android:layout_gravity="center_vertical"
android:layout_margin="10dp"
android:layout_weight="1"
android:layoutDirection="locale" />
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:layout_weight="1"
android:orientation="vertical"
android:weightSum="3">
<TextView
android:id="@+id/indexValue"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="bottom"
android:text="456,99"
android:textStyle="bold"
/>
<Button
android:id="@+id/indexChange"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="2"
android:background="@color/green"
android:clickable="false"
android:shadowRadius="100"
android:text="+15.22%"
android:textColor="@color/white" />
</LinearLayout>
<ImageButton
android:id="@+id/homeCross"
android:layout_width="30dp"
android:layout_height="30dp"
android:src="@drawable/remove"
android:clickable="true"
android:background="@android:color/transparent"
android:focusable="true"
/>
</LinearLayout>
共有1个答案
谭桐
对mpchart尝试此替代方案
易于使用
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