use achartengine 1.2.0 as source

#13

app/build.gradle

@@ -106,7 +106,6 @@ dependencies {
     implementation 'com.mtramin:rxfingerprint:2.2.1'
     implementation 'io.reactivex.rxjava2:rxjava:2.1.9'
     implementation 'io.reactivex.rxjava2:rxandroid:2.0.2'
-    implementation files('libs/achartengine-1.2.0.jar')
     implementation files('libs/CWAC-WakefulIntentService.jar')
     //implementation files('libs/google-api-client-1.17.0-rc.jar')
     //implementation files('libs/google-api-client-android-1.17.0-rc.jar')

app/src/main/java/org/achartengine/GraphicalActivity.java

@@ -0,0 +1,48 @@
+/**
+ * Copyright (C) 2009 - 2013 SC 4ViewSoft SRL
+ *  
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *  
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.achartengine;
+
+import org.achartengine.chart.AbstractChart;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.Window;
+
+/**
+ * An activity that encapsulates a graphical view of the chart.
+ */
+public class GraphicalActivity extends Activity {
+  /** The encapsulated graphical view. */
+  private GraphicalView mView;
+  /** The chart to be drawn. */
+  private AbstractChart mChart;
+
+  @Override
+  protected void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    Bundle extras = getIntent().getExtras();
+    mChart = (AbstractChart) extras.getSerializable(ChartFactory.CHART);
+    mView = new GraphicalView(this, mChart);
+    String title = extras.getString(ChartFactory.TITLE);
+    if (title == null) {
+      requestWindowFeature(Window.FEATURE_NO_TITLE);
+    } else if (title.length() > 0) {
+      setTitle(title);
+    }
+    setContentView(mView);
+  }
+
+}