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POLocal Variable fm Cannot Be Resolved to a Type
 

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  1. POLocal Variable fm Cannot Be Resolved to a Type
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    <p>In my app, I am creating tabs that use Fragments and a pageAdapter. In my TabsViewPagerFragmentActivity class, I get the error that:</p> <pre><code>fm cannot be resolved to a variable TabsViewPagerFragmentActivity.java /LoginAndRegistration/src/com/example/loginandregistration line 47 Java Problem </code></pre> <p>When I follow the quick fix options I chose to create a local variable and then it tells me to initialize fm (fm stands for FragmentManager by the way) but then it sets it to <strong>null</strong> I define fm in my PageAdapter here:</p> <pre><code>public class MyPageAdapter extends FragmentPagerAdapter { // Declare the number of ViewPager pages final int PAGE_COUNT = 3; public MyPageAdapter(FragmentManager fm) { super(fm); } </code></pre> <p>So my question is: Should I follow the quick fix? If so, what should I change the <strong>null</strong> value to? OR Should I change something in my PageAdapter class? Here is the TabsViewPagerFragmentActivity.java as well:</p> <pre><code>package com.example.loginandregistration; import android.app.ActionBar; import android.app.ActionBar.Tab; import android.app.FragmentManager; import android.app.FragmentTransaction; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.support.v4.view.ViewPager; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.content.LocalBroadcastManager; import com.example.loginandregistration.MyPageAdapter; public class TabsViewPagerFragmentActivity extends FragmentActivity { // Declare Variables ActionBar mActionBar; ViewPager mPager; Tab tab; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Get the view from dashboard.xml setContentView(R.layout.dashboard); // Activate Navigation Mode Tabs mActionBar = getActionBar(); mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); // Locate ViewPager in activity_main.xml mPager = (ViewPager) findViewById(R.id.pager); // Capture ViewPager page swipes ViewPager.SimpleOnPageChangeListener ViewPagerListener = new ViewPager.SimpleOnPageChangeListener() { @Override public void onPageSelected(int position) { super.onPageSelected(position); // Find the ViewPager Position mActionBar.setSelectedNavigationItem(position); } }; mPager.setOnPageChangeListener(ViewPagerListener); // Locate the adapter class called ViewPagerAdapter.java MyPageAdapter viewpageradapter = new MyPageAdapter(fm); // Set the View Pager Adapter into ViewPager mPager.setAdapter(viewpageradapter); // Capture tab button clicks ActionBar.TabListener tabListener = new ActionBar.TabListener() { @Override public void onTabSelected(Tab tab, FragmentTransaction ft) { // Pass the position on tab click to ViewPager mPager.setCurrentItem(tab.getPosition()); } @Override public void onTabUnselected(Tab tab, FragmentTransaction ft) { // TODO Auto-generated method stub } @Override public void onTabReselected(Tab tab, FragmentTransaction ft) { // TODO Auto-generated method stub } }; // Create first Tab tab = mActionBar.newTab().setText("Tab1").setTabListener(tabListener); mActionBar.addTab(tab); // Create second Tab tab = mActionBar.newTab().setText("Tab2").setTabListener(tabListener); mActionBar.addTab(tab); // Create third Tab tab = mActionBar.newTab().setText("Tab3").setTabListener(tabListener); mActionBar.addTab(tab); } } </code></pre>
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