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POAndroid Fatal error:main
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  1. POAndroid Fatal error:main
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    copied!<p>when i click button Order, to this CatalogActivity.java, it show me fatal error.</p> <pre><code>package com.example.barcode; import java.util.List; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.Button; import android.widget.ListView; public class CatalogActivity extends Activity { private List&lt;Product&gt; mProductList; Button button; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.catalog); // Obtain a reference to the product catalog mProductList = ShoppingCartHelper.getCatalog(getResources()); // Create the list ListView listViewCatalog = (ListView) findViewById(R.id.ListViewCatalog); listViewCatalog.setAdapter(new ProductAdapter(mProductList, getLayoutInflater(), false)); listViewCatalog.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position, long id) { Intent productDetailsIntent = new Intent(getBaseContext(),ProductDetailsActivity.class); productDetailsIntent.putExtra(ShoppingCartHelper.PRODUCT_INDEX, position); startActivity(productDetailsIntent); } }); Button viewShoppingCart = (Button) findViewById(R.id.ButtonViewCart); viewShoppingCart.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Intent viewShoppingCartIntent = new Intent(getBaseContext(), ShoppingCartActivity.class); startActivity(viewShoppingCartIntent); } }); } } </code></pre> <hr> <pre><code>04-08 12:25:17.893: W/KeyCharacterMap(478): No keyboard for id 0 04-08 12:25:17.893: W/KeyCharacterMap(478): Using default keymap: /system/usr/keychars/qwerty.kcm.bin 04-08 12:25:22.663: D/AndroidRuntime(478): Shutting down VM 04-08 12:25:22.673: W/dalvikvm(478): threadid=1: thread exiting with uncaught exception (group=0x40015560) 04-08 12:25:22.693: E/AndroidRuntime(478): FATAL EXCEPTION: main 04-08 12:25:22.693: E/AndroidRuntime(478): java.lang.IllegalStateException: Could not execute method of the activity 04-08 12:25:22.693: E/AndroidRuntime(478): at android.view.View$1.onClick(View.java:2144) 04-08 12:25:22.693: E/AndroidRuntime(478): at android.view.View.performClick(View.java:2485) 04-08 12:25:22.693: E/AndroidRuntime(478): at android.view.View$PerformClick.run(View.java:9080) 04-08 12:25:22.693: E/AndroidRuntime(478): at android.os.Handler.handleCallback(Handler.java:587) 04-08 12:25:22.693: E/AndroidRuntime(478): at android.os.Handler.dispatchMessage(Handler.java:92) 04-08 12:25:22.693: E/AndroidRuntime(478): at android.os.Looper.loop(Looper.java:123) 04-08 12:25:22.693: E/AndroidRuntime(478): at android.app.ActivityThread.main(ActivityThread.java:3683) 04-08 12:25:22.693: E/AndroidRuntime(478): at java.lang.reflect.Method.invokeNative(Native Method) 04-08 12:25:22.693: E/AndroidRuntime(478): at java.lang.reflect.Method.invoke(Method.java:507) 04-08 12:25:22.693: E/AndroidRuntime(478): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 04-08 12:25:22.693: E/AndroidRuntime(478): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 04-08 12:25:22.693: E/AndroidRuntime(478): at dalvik.system.NativeStart.main(Native Method) 04-08 12:25:22.693: E/AndroidRuntime(478): Caused by: java.lang.reflect.InvocationTargetException 04-08 12:25:22.693: E/AndroidRuntime(478): at java.lang.reflect.Method.invokeNative(Native Method) 04-08 12:25:22.693: E/AndroidRuntime(478): at java.lang.reflect.Method.invoke(Method.java:507) 04-08 12:25:22.693: E/AndroidRuntime(478): at android.view.View$1.onClick(View.java:2139) 04-08 12:25:22.693: E/AndroidRuntime(478): ... 11 more 04-08 12:25:22.693: E/AndroidRuntime(478): Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.barcode/com.example.barcode.CatalogActivity}; have you declared this activity in your AndroidManifest.xml? 04-08 12:25:22.693: E/AndroidRuntime(478): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1405) 04-08 12:25:22.693: E/AndroidRuntime(478): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1379) 04-08 12:25:22.693: E/AndroidRuntime(478): at android.app.Activity.startActivityForResult(Activity.java:2827) 04-08 12:25:22.693: E/AndroidRuntime(478): at android.app.Activity.startActivity(Activity.java:2933) 04-08 12:25:22.693: E/AndroidRuntime(478): at com.example.barcode.Barcodemain.Order(Barcodemain.java:30) 04-08 12:25:22.693: E/AndroidRuntime(478): ... 14 more </code></pre>
 

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