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POCalling a method from library (jar)
 

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    <p>I'm trying to understand library usage in Android. So I created a very simple library and import it in my project. I want to call the method <strong>cubeOf()</strong> from <strong>MyOperations.jar</strong> (library file). There is no building errors but the application is stopping unexpectedly when I runned.</p> <p><strong>MainActivity.java</strong> class (in MyApplication):</p> <pre><code>package com.sam.myapplication; import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.widget.TextView; import com.sam.mylibrary.MyOperations; public class MainActivity extends Activity { TextView tv1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tv1 = (TextView) findViewById(R.id.textView1); MyOperations op = new MyOperations(); int a = op.cubeOf(8); // Just a random number tv1.setText(a); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } } </code></pre> <p><strong>MyOperations.java</strong> class (in MyLibrary):</p> <pre><code>package com.sam.mylibrary; public class MyOperations { public static void main(String[] arg) { } public static int cubeOf(int i) { int c = i*i*i; return c; } } </code></pre> <p><h3><strong>SOLVED!</strong></h3> Thanks for replies, I solved the issue through <a href="http://www.vogella.com/articles/AndroidLibraryProjects/article.html" rel="nofollow"><strong>this article</strong></a>.</p>
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    1. COcubeOf being a static method should be accessed in a static way: MyOperations.cubeOf().
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    2. CO@GoranHoriaMihail I edited but still same problem.
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    3. COIf the app's crashing, you should have a stack trace of some kind in your console; that should help you find the problem—if it doesn't, post it here as more information.
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