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POFragment Tabs Strange Crashes
 

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    <p>Does anyone know what to do with this Fragment Tabs Problem?</p> <p>I am a very novice programmer with not much experience, especially in the world of Android application developing. I recently started a project with fragment tabs and I find that when I try to access a object (for lack of a better word, but I mean like a TextView, Spinner, EditText, etc.) by something like</p> <pre><code>TextView textBox = (TextView) getView().findViewById(R.id.scouter_name_box); </code></pre> <p>the compiler finds no errors, but the app crashes. I have tried putting this line of code in a function, in the body of the fragment by itself (after onCreate()), and at the end of onCreate(). This doesn't help. The Error Log also doesn't say anything.</p> <p>Furthermore, when I comment out this line, the rest of the app runs seamlessly. The app doesn't have any other activities except MainActivity and the three tab Fragments.</p> <p>WHAT CAN I DO TO ACCESS THE TEXTVIEWS, SPINNERS, ETC?</p> <p>also, as I mentioned I am very new. If you need a better explanation please ask, and sorry if I don't understand what you are saying at first.</p> <p>We all have to start somewhere</p> <p>Please help, and Thank you in Advance</p> <p>Tab XML File:</p> <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" &gt; &lt;TextView android:id="@+id/input_scouter_name" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_alignParentLeft="true" android:text="Scouter Name:" android:textSize="25sp" android:textStyle="bold" /&gt; &lt;Spinner android:id="@+id/choose_scouter_name" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_toRightOf="@+id/input_scouter_name" android:entries="@array/scouter_name_list" /&gt; &lt;/RelativeLayout&gt; </code></pre> <p>MainActivity Java File:</p> <pre><code>import android.app.ActionBar; import android.app.ActionBar.Tab; import android.app.Activity; import android.os.Bundle; public class MainActivity extends Activity { // Declare Tab Variable Tab tab; ScoutingData ScoutData; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Create the actionbar ActionBar actionBar = getActionBar(); // Hide Actionbar Icon actionBar.setDisplayShowHomeEnabled(true); actionBar.setIcon(R.drawable.red_and_blue_frisbees); // Hide Actionbar Title actionBar.setDisplayShowTitleEnabled(true); // Create Actionbar Tabs actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); // Create Home Tab tab = actionBar.newTab().setTabListener(new FragmentsTab0()); // Set Tab Title tab.setText("General"); actionBar.addTab(tab); // Create first Tab tab = actionBar.newTab().setTabListener(new FragmentsTab1()); // Set Tab Title tab.setText("Autonomous"); actionBar.addTab(tab); // Create Second Tab tab = actionBar.newTab().setTabListener(new FragmentsTab2()); // Set Tab Title tab.setText("Teleop"); actionBar.addTab(tab); // Create Third Tab tab = actionBar.newTab().setTabListener(new FragmentsTab3()); // Set Tab Title tab.setText("Endgame"); actionBar.addTab(tab); } } </code></pre> <p>Tab Java File:</p> <pre><code>import android.app.ActionBar; import android.app.ActionBar.Tab; import android.app.Fragment; import android.app.FragmentTransaction; import android.os.Bundle; import android.widget.Spinner; public class FragmentsTab0 extends Fragment implements ActionBar.TabListener { private Fragment mFragment; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Get the view from tab0fragment.xml getActivity().setContentView(R.layout.tab0fragment); } public void onTabSelected(Tab tab, FragmentTransaction ft) { // TODO Auto-generated method stub mFragment = new FragmentsTab0(); // Attach tab0fragment.xml layout ft.add(android.R.id.content, mFragment); ft.attach(mFragment); } public void onTabUnselected(Tab tab, FragmentTransaction ft) { // TODO Auto-generated method stub // Remove tab0fragment.xml layout ft.remove(mFragment); } public void onTabReselected(Tab tab, FragmentTransaction ft) { // TODO Auto-generated method stub } //Heeere's the Problem Spinner scouterName = (Spinner) getView().findViewById(R.id.choose_scouter_name); } </code></pre>
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