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POAndroid App stops when button clicked
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20456572
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2013-12-08T17:35:06.807
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2013-12-08T18:02:07.890
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2013-12-08T18:02:07.890
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<p>I am trying to write an app that has 4 menu buttons on the main screen. On clicking this each menu button, a new screen should appear. At the moment I have only written code to cater for the first button to be clicked, but it the app crashes/stops. I think the problem is that I don't have the activity of TheCompany declared in the Android Manifest file, but I don't know how I would do that. I am writing the app in Eclipse and so far I have the following files/sets of code: MainActivity.Java:</p> <pre><code>public class MainActivity extends Activity { public final static String EXTRA_MESSAGE = "com.example.myfirstapp.MESSAGE"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); View button = findViewById(R.id.TheCompany); button.setOnClickListener(new OnClickListener(){ public void onClick (View v){ startIntent(); } }); //getSupportActionBar().setDisplayHomeAsUpEnabled(true); // If your minSdkVersion is 11 or higher, instead use: // getActionBar().setDisplayHomeAsUpEnabled(true); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu items for use in the action bar MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.main_activity_actions, menu); return super.onCreateOptionsMenu(menu); } /** Called when the user clicks the Company button */ private void startIntent() { // Do something in response to button Intent intent = new Intent(this, TheCompany.class); startActivity(intent); } } </code></pre> <p>The Activity_main.xml:</p> <pre><code><?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:padding="10dp" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" > <Button android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="The Company" android:id="@+id/TheCompany"/> <Button android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="Services"/> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" > <Button android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="Contacts" /> <Button android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="Structure" /> </LinearLayout> </LinearLayout> </code></pre> <p>Then I have the TheCompany Java file:</p> <pre><code>public class TheCompany extends Activity { public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.company); } } </code></pre> <p>The Android.Manifest looks like:</p> <pre><code><?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.myfirstapp" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="19" /> <application android:allowBackup="true" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:icon="@drawable/logo" android:name="com.example.myfirstapp.MainActivity" 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="com.example.myfirstapp.DisplayMessageActivity" android:label="@string/title_activity_display_message" android:parentActivityName="com.example.myfirstapp.MainActivity" > <meta-data android:name="android.support.PARENT_ACTIVITY" android:value="com.example.myfirstapp.MainActivity" /> </activity> </application> </manifest> </code></pre>
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Android App stops when button clicked
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