Line graph is not scrolling automatically in android












0















I'm fetching problem in making this graph auto scrollable.when i'm scrolling manually it's removing it's value from first .enter image description here



public class RealTimeData extends AppCompatActivity {
FirebaseDatabase firebaseDatabase;
DatabaseReference databaseReference;
private LineGraphSeries < DataPoint > series;
private double x = 1;
private int lastX = 0;
private static final Random RANDOM = new Random();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
firebaseDatabase = FirebaseDatabase.getInstance();
databaseReference = firebaseDatabase.getReferenceFromUrl("https://ecgmonitor-f0064.firebaseio.com/");
setContentView(R.layout.activity_real_time_data);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
GraphView graph = (GraphView) findViewById(R.id.graph);
series = new LineGraphSeries < DataPoint > ();
graph.addSeries(series);
Viewport viewport = graph.getViewport();
viewport.setYAxisBoundsManual(true);
viewport.setMinY(0);
viewport.setMaxY(10);
viewport.setScrollable(true);
viewport.scrollToEnd();
}
@Override
protected void onResume() {
super.onResume();
new Thread(new Runnable() {
@Override
public void run() {
// we add 100 new entries
for (int i = 0; i < 100; i++) {
runOnUiThread(new Runnable() {
@Override
public void run() {
addEntry();
}
});
// sleep to slow down the add of entries
try {
Thread.sleep(600);
} catch (InterruptedException e) {
// manage error ...
}
}
}
}).start();
}

// add random data to graph
private void addEntry() {
series.appendData(new DataPoint(lastX++, RANDOM.nextDouble() * 10 d), true, 10);
}

public void onBackPressed() {
startActivity(new Intent(RealTimeData.this, MainActivity.class));
finish();
}
}


now what should i do to solve this problem.










share|improve this question





























    0















    I'm fetching problem in making this graph auto scrollable.when i'm scrolling manually it's removing it's value from first .enter image description here



    public class RealTimeData extends AppCompatActivity {
    FirebaseDatabase firebaseDatabase;
    DatabaseReference databaseReference;
    private LineGraphSeries < DataPoint > series;
    private double x = 1;
    private int lastX = 0;
    private static final Random RANDOM = new Random();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    firebaseDatabase = FirebaseDatabase.getInstance();
    databaseReference = firebaseDatabase.getReferenceFromUrl("https://ecgmonitor-f0064.firebaseio.com/");
    setContentView(R.layout.activity_real_time_data);
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
    GraphView graph = (GraphView) findViewById(R.id.graph);
    series = new LineGraphSeries < DataPoint > ();
    graph.addSeries(series);
    Viewport viewport = graph.getViewport();
    viewport.setYAxisBoundsManual(true);
    viewport.setMinY(0);
    viewport.setMaxY(10);
    viewport.setScrollable(true);
    viewport.scrollToEnd();
    }
    @Override
    protected void onResume() {
    super.onResume();
    new Thread(new Runnable() {
    @Override
    public void run() {
    // we add 100 new entries
    for (int i = 0; i < 100; i++) {
    runOnUiThread(new Runnable() {
    @Override
    public void run() {
    addEntry();
    }
    });
    // sleep to slow down the add of entries
    try {
    Thread.sleep(600);
    } catch (InterruptedException e) {
    // manage error ...
    }
    }
    }
    }).start();
    }

    // add random data to graph
    private void addEntry() {
    series.appendData(new DataPoint(lastX++, RANDOM.nextDouble() * 10 d), true, 10);
    }

    public void onBackPressed() {
    startActivity(new Intent(RealTimeData.this, MainActivity.class));
    finish();
    }
    }


    now what should i do to solve this problem.










    share|improve this question



























      0












      0








      0








      I'm fetching problem in making this graph auto scrollable.when i'm scrolling manually it's removing it's value from first .enter image description here



      public class RealTimeData extends AppCompatActivity {
      FirebaseDatabase firebaseDatabase;
      DatabaseReference databaseReference;
      private LineGraphSeries < DataPoint > series;
      private double x = 1;
      private int lastX = 0;
      private static final Random RANDOM = new Random();
      @Override
      protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      firebaseDatabase = FirebaseDatabase.getInstance();
      databaseReference = firebaseDatabase.getReferenceFromUrl("https://ecgmonitor-f0064.firebaseio.com/");
      setContentView(R.layout.activity_real_time_data);
      setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
      GraphView graph = (GraphView) findViewById(R.id.graph);
      series = new LineGraphSeries < DataPoint > ();
      graph.addSeries(series);
      Viewport viewport = graph.getViewport();
      viewport.setYAxisBoundsManual(true);
      viewport.setMinY(0);
      viewport.setMaxY(10);
      viewport.setScrollable(true);
      viewport.scrollToEnd();
      }
      @Override
      protected void onResume() {
      super.onResume();
      new Thread(new Runnable() {
      @Override
      public void run() {
      // we add 100 new entries
      for (int i = 0; i < 100; i++) {
      runOnUiThread(new Runnable() {
      @Override
      public void run() {
      addEntry();
      }
      });
      // sleep to slow down the add of entries
      try {
      Thread.sleep(600);
      } catch (InterruptedException e) {
      // manage error ...
      }
      }
      }
      }).start();
      }

      // add random data to graph
      private void addEntry() {
      series.appendData(new DataPoint(lastX++, RANDOM.nextDouble() * 10 d), true, 10);
      }

      public void onBackPressed() {
      startActivity(new Intent(RealTimeData.this, MainActivity.class));
      finish();
      }
      }


      now what should i do to solve this problem.










      share|improve this question
















      I'm fetching problem in making this graph auto scrollable.when i'm scrolling manually it's removing it's value from first .enter image description here



      public class RealTimeData extends AppCompatActivity {
      FirebaseDatabase firebaseDatabase;
      DatabaseReference databaseReference;
      private LineGraphSeries < DataPoint > series;
      private double x = 1;
      private int lastX = 0;
      private static final Random RANDOM = new Random();
      @Override
      protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      firebaseDatabase = FirebaseDatabase.getInstance();
      databaseReference = firebaseDatabase.getReferenceFromUrl("https://ecgmonitor-f0064.firebaseio.com/");
      setContentView(R.layout.activity_real_time_data);
      setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
      GraphView graph = (GraphView) findViewById(R.id.graph);
      series = new LineGraphSeries < DataPoint > ();
      graph.addSeries(series);
      Viewport viewport = graph.getViewport();
      viewport.setYAxisBoundsManual(true);
      viewport.setMinY(0);
      viewport.setMaxY(10);
      viewport.setScrollable(true);
      viewport.scrollToEnd();
      }
      @Override
      protected void onResume() {
      super.onResume();
      new Thread(new Runnable() {
      @Override
      public void run() {
      // we add 100 new entries
      for (int i = 0; i < 100; i++) {
      runOnUiThread(new Runnable() {
      @Override
      public void run() {
      addEntry();
      }
      });
      // sleep to slow down the add of entries
      try {
      Thread.sleep(600);
      } catch (InterruptedException e) {
      // manage error ...
      }
      }
      }
      }).start();
      }

      // add random data to graph
      private void addEntry() {
      series.appendData(new DataPoint(lastX++, RANDOM.nextDouble() * 10 d), true, 10);
      }

      public void onBackPressed() {
      startActivity(new Intent(RealTimeData.this, MainActivity.class));
      finish();
      }
      }


      now what should i do to solve this problem.







      android autoscroll linegraph






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 14 '18 at 8:47









      Mohammad

      15.6k123462




      15.6k123462










      asked Nov 14 '18 at 7:18









      Mahmudul HasanMahmudul Hasan

      11




      11
























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