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POAndroid: Parsing a page with Jsoup
 

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  1. POAndroid: Parsing a page with Jsoup
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    <p>Why does my app keep crashing after it shows up on the Emulator? I just started learning about Jsoup parsing and following different tuts, but I can't find solution to this error. </p> <pre><code>package com.example.testingjson; import java.io.IOException; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import android.os.Bundle; import android.app.Activity; import android.view.Menu; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // process Document doc; try { doc = Jsoup.connect("http://google.com/").get(); String title = doc.title(); System.out.print(title); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_main, menu); return true; } } </code></pre> <p>And this is the Error Message</p> <pre><code>12-26 19:30:42.043: E/AndroidRuntime(4260): FATAL EXCEPTION: main 12-26 19:30:42.043: E/AndroidRuntime(4260): java.lang.NoClassDefFoundError: org.jsoup.Jsoup 12-26 19:30:42.043: E/AndroidRuntime(4260): at com.example.testingjson.MainActivity.onCreate(MainActivity.java:22) 12-26 19:30:42.043: E/AndroidRuntime(4260): at android.app.Activity.performCreate(Activity.java:5104) 12-26 19:30:42.043: E/AndroidRuntime(4260): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 12-26 19:30:42.043: E/AndroidRuntime(4260): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) 12-26 19:30:42.043: E/AndroidRuntime(4260): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 12-26 19:30:42.043: E/AndroidRuntime(4260): at android.app.ActivityThread.access$600(ActivityThread.java:141) 12-26 19:30:42.043: E/AndroidRuntime(4260): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 12-26 19:30:42.043: E/AndroidRuntime(4260): at android.os.Handler.dispatchMessage(Handler.java:99) 12-26 19:30:42.043: E/AndroidRuntime(4260): at android.os.Looper.loop(Looper.java:137) 12-26 19:30:42.043: E/AndroidRuntime(4260): at android.app.ActivityThread.main(ActivityThread.java:5039) 12-26 19:30:42.043: E/AndroidRuntime(4260): at java.lang.reflect.Method.invokeNative(Native Method) 12-26 19:30:42.043: E/AndroidRuntime(4260): at java.lang.reflect.Method.invoke(Method.java:511) 12-26 19:30:42.043: E/AndroidRuntime(4260): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 12-26 19:30:42.043: E/AndroidRuntime(4260): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 12-26 19:30:42.043: E/AndroidRuntime(4260): at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>Edit: Here is a pic showing the JSOUP jar file imported, but I still get the error. <img src="https://i.stack.imgur.com/MFmkU.png" alt="enter image description here"></p> <p>APK file opened with Winrar.</p> <p><img src="https://i.stack.imgur.com/YQrxA.png" alt="enter image description here"></p> <p>Order &amp; Export' settings </p> <p><img src="https://i.stack.imgur.com/a974W.png" alt="enter image description here"></p>
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    1. CO`java.lang.NoClassDefFoundError: org.jsoup.Jsoup`: seems pretty self-explaining to me? The mentioned class is missing in the runtime classpath, while it was available in the compiletime classpath.
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    2. COSo to fix it I must add the jsoup-1.7.1.jar library to the compile time classpath. How?
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    3. COIt's not missing in the compiletime classpath (otherwise you wouldn't be able to compile it). It's missing in runtime classpath. That's exactly what `NoClassDefFoundError` means. The class was successfully compiled with Jsoup dependency, but it is in turn missing during runtime.
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