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我需要从数组中添加数据，然后实时添加数据。我可以分别做这两件事，但是当我想一起做所有事情时，应用程序会在它启动之前关闭。

这个想法是显示我通过蓝牙接收的数据，当我收到 5 系列时，这个想法是能够随时可视化 5。然后我想做的是绘制已经到达我的数据并添加我收到的数据，然后我可以通过重置图表并使用另一个系列的值加载它来查看不同的系列。

我附上代码。

非常感谢。

public class MainActivity extends AppCompatActivity {

private static final Random RANDOM = new Random();
private LineGraphSeries<DataPoint> series;
private int lastX = 0;

double[] x= new double[10];
double[] y= new double[10];

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    // we get graph view instance
    values();
    LineGraphSeries<DataPoint> series;
    GraphView graph = (GraphView) findViewById(R.id.graph);
    // data
    series = new LineGraphSeries<>(data());
    graph.addSeries(series);
    // customize a little bit viewport
    Viewport viewport = graph.getViewport();
    viewport.setYAxisBoundsManual(true);
    viewport.setXAxisBoundsManual(true);
    viewport.setMinY(0);
    viewport.setMaxY(10);
    viewport.setMinX(0);
    viewport.setMaxX(30);
    series.setThickness(1);
}

@Override
protected void onResume() {
    super.onResume();
    // we're going to simulate real time with thread that append data to the graph
    new Thread(new Runnable() {

        @Override
        public void run() {
            // we add 100 new entries
            for (int i = 0; i < 10; i++) {
                runOnUiThread(new Runnable() {

                    @Override
                    public void run() {
                        addEntry();
                    }
                });

                // sleep to slow down the add of entries
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // manage error ...
                }
            }
        }
    }).start();
}

// add random data to graph
private void addEntry() {
    // here, we choose to display max 10 points on the viewport and we scroll to end

    series.appendData(new DataPoint(lastX++, RANDOM.nextDouble() * 10d), false, 1800);
}

public DataPoint[] data(){
    DataPoint[] values = new DataPoint[10];     //creating an object of type DataPoint[] of size 'n'
    for(int i=0;i<10;i++){
        DataPoint v = new DataPoint(x[i],y[i]);
        values[i] = v;
    }
    return values;
}

private void values(){
    for(int i=0;i<10;i++) {
    x[i]=i;
    y[i]=i;
    }
}

}
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