I am trying to create a dynamic chart for my random generator that stores pump values. For the graph, I use AChartEngine . I understand that my approach is to use the Async Task mechanism to make the update a thorough background thread for a dynamic chart. But I cannot get the basic XY diagram using the AChartEngine libraries. Application crashes every time. Here is my code for the basic XY diagram.
package com.example.graph2; import org.achartengine.ChartFactory; import org.achartengine.GraphicalView; import org.achartengine.model.XYMultipleSeriesDataset; import org.achartengine.model.XYSeries; import org.achartengine.renderer.XYMultipleSeriesRenderer; import org.achartengine.renderer.XYSeriesRenderer; import android.app.Activity; import android.graphics.Color; import android.os.Bundle; import android.widget.LinearLayout; import android.widget.LinearLayout.LayoutParams; public class Graph2Activity extends Activity { private XYMultipleSeriesDataset RNG_Dataset = new XYMultipleSeriesDataset(); private XYMultipleSeriesRenderer RNG_Renderer = new XYMultipleSeriesRenderer(); public XYSeries RNG_CurrentSeries; private GraphicalView RNG_ChartView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); RNG_Renderer.setAxisTitleTextSize(16); RNG_Renderer.setChartTitleTextSize(20); RNG_Renderer.setLabelsTextSize(15); RNG_Renderer.setLegendTextSize(15); RNG_Renderer.setMargins(new int[] {20, 30, 15, 0}); RNG_Renderer.setAxesColor(Color.YELLOW); String seriesTitle = "RNG"; XYSeries series = new XYSeries(seriesTitle); RNG_Dataset.addSeries(series); RNG_CurrentSeries = series; XYSeriesRenderer renderer = new XYSeriesRenderer(); renderer.setColor(Color.RED); RNG_Renderer.addSeriesRenderer(renderer); setContentView(R.id.RNGchart); } protected void onResume() { if (RNG_ChartView == null) { LinearLayout layout = (LinearLayout) findViewById(R.id.RNGchart); RNG_ChartView = ChartFactory.getLineChartView(this, RNG_Dataset, RNG_Renderer); layout.addView(RNG_ChartView, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
Here is the xml I used:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/RNGchart" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="300px" android:layout_weight="1" />
Can someone please tell me where I am going wrong? Here is the exception log:
10-10 17:20:52.761: ERROR/AndroidRuntime(335): FATAL EXCEPTION: main 10-10 17:20:52.761: ERROR/AndroidRuntime(335): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.graph2/com.example.graph2.Graph2Activity}: android.content.res.Resources$NotFoundException: Resource ID #0x7f050000 type #0x12 is not valid 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at android.os.Handler.dispatchMessage(Handler.java:99) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at android.os.Looper.loop(Looper.java:123) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at android.app.ActivityThread.main(ActivityThread.java:3683) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at java.lang.reflect.Method.invokeNative(Native Method) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at java.lang.reflect.Method.invoke(Method.java:507) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at dalvik.system.NativeStart.main(Native Method) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): Caused by: android.content.res.Resources$NotFoundException: Resource ID #0x7f050000 type #0x12 is not valid 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at android.content.res.Resources.loadXmlResourceParser(Resources.java:1874) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at android.content.res.Resources.getLayout(Resources.java:731) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at android.view.LayoutInflater.inflate(LayoutInflater.java:318) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at android.app.Activity.setContentView(Activity.java:1657) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at com.example.graph2.Graph2Activity.onCreate(Graph2Activity.java:44) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611) 10-10 17:20:52.761: ERROR/AndroidRuntime(335): ... 11 more Here is the manifest file: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.graph2" android:versionCode="1" android:versionName="1.0"> <uses-sdk android:minSdkVersion="10" /> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".Graph2Activity" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name="org.achartengine.chartdemo.demo.chart.XYChartBuilder" /> <activity android:name="org.achartengine.GraphicalActivity" /> <activity android:name=".GeneratedChartDemo" /> </application> </manifest>
source share