我使用片段创建导航抽屉，使用片段创建操作栏标签。但是当我编译它时，我遇到了问题。我的应用程序不幸停止工作。我的代码没有错误，我很困惑，哪有错？
MainActivity.java
public class MainActivity extends FragmentActivity {
// Within which the entire activity is enclosed
private DrawerLayout mDrawerLayout;
// ListView represents Navigation Drawer
private ListView mDrawerList;
// ActionBarDrawerToggle indicates the presence of Navigation Drawer in the action bar
private ActionBarDrawerToggle mDrawerToggle;
// Title of the action bar
private String mTitle = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTitle = "Sistem Pakar Ayam";
getActionBar().setTitle(mTitle);
// Getting reference to the DrawerLayout
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.drawer_list);
// Getting reference to the ActionBarDrawerToggle
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.drawable.ic_drawer, R.string.drawer_open,
R.string.drawer_close) {
/** Called when drawer is closed */
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
invalidateOptionsMenu();
}
/** Called when a drawer is opened */
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle("Sistem Pakar Ayam");
invalidateOptionsMenu();
}
};
// Setting DrawerToggle on DrawerLayout
mDrawerLayout.setDrawerListener(mDrawerToggle);
// Creating an ArrayAdapter to add items to the listview mDrawerList
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getBaseContext(),
R.layout.drawer_list_item, getResources().getStringArray(R.array.menus));
// Setting the adapter on mDrawerList
mDrawerList.setAdapter(adapter);
// Enabling Home button
getActionBar().setHomeButtonEnabled(true);
// Enabling Up navigation
getActionBar().setDisplayHomeAsUpEnabled(true);
// Setting item click listener for the listview mDrawerList
mDrawerList.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// Getting an array of rivers
String[] menuItems = getResources().getStringArray(R.array.menus);
// Currently selected river
mTitle = menuItems[position];
if (mTitle.equals("Beranda")){
FragmentHome fragmenthome = new FragmentHome();
FragmentManager fragmentManager = getFragmentManager();
// Creating a fragment transaction
FragmentTransaction ft = fragmentManager.beginTransaction();
// Adding a fragment to the fragment transaction
ft.replace(R.id.content_frame, fragmenthome);
// Committing the transaction
ft.commit();
}
else if (mTitle.equals("Diagnosis")){
FragmentDiagnosis fragmentdiagnosis = new FragmentDiagnosis();
FragmentManager fragmentManager = getFragmentManager();
// Creating a fragment transaction
FragmentTransaction ft = fragmentManager.beginTransaction();
// Adding a fragment to the fragment transaction
ft.replace(R.id.content_frame, fragmentdiagnosis);
// Committing the transaction
ft.commit();
}
else if (mTitle.equals("Data Penyakit")){
FragmentPenyakit fragmentpenyakit = new FragmentPenyakit();
FragmentManager fragmentManager = getFragmentManager();
// Creating a fragment transaction
FragmentTransaction ft = fragmentManager.beginTransaction();
// Adding a fragment to the fragment transaction
ft.replace(R.id.content_frame, fragmentpenyakit);
// Committing the transaction
ft.commit();
}
else if (mTitle.equals("Bantuan")){
FragmentBantuan fragmentbantuan = new FragmentBantuan();
FragmentManager fragmentManager = getFragmentManager();
// Creating a fragment transaction
FragmentTransaction ft = fragmentManager.beginTransaction();
// Adding a fragment to the fragment transaction
ft.replace(R.id.content_frame, fragmentbantuan);
// Committing the transaction
ft.commit();
}
else if (mTitle.equals("Tentang")){
FragmentTentang fragmenttentang = new FragmentTentang();
FragmentManager fragmentManager = getFragmentManager();
// Creating a fragment transaction
FragmentTransaction ft = fragmentManager.beginTransaction();
// Adding a fragment to the fragment transaction
ft.replace(R.id.content_frame, fragmenttentang);
// Committing the transaction
ft.commit();
}
// Closing the drawer
mDrawerLayout.closeDrawer(mDrawerList);
}
});
//Menampilkan Fragment Home yang Tampil Pertama Kali
FragmentHome fragmenthome = new FragmentHome();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction ft = fragmentManager.beginTransaction();
ft.replace(R.id.content_frame, fragmenthome);
ft.commit();
getActionBar().setTitle("Beranda");
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
mDrawerToggle.syncState();
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
/** Called whenever we call invalidateOptionsMenu() */
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
// If the drawer is open, hide action items related to the content view
boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
menu.findItem(R.id.menu_settings).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
public void onBackPressed() {
new AlertDialog.Builder(this)
.setMessage("Apa kalian ingin Keluar?")
.setCancelable(false)
.setPositiveButton("Ya", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
MainActivity.this.finish();
}
})
.setNegativeButton("Tidak", null)
.show();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
FragmentTentang.java
public class FragmentTentang extends Fragment {
ViewPager mViewPager;
public View onCreateView(LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.activity_fragment_tentang, container, false);
return v;
}
@Override
public void onCreate(Bundle savedInstanceState) {
final ActionBar actionBar = getActivity().getActionBar();
// Specify that tabs should be displayed in the action bar.
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Create a tab listener that is called when the user changes tabs.
ActionBar.TabListener tabListener = new ActionBar.TabListener() {
@Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
@Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
mViewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
};
// Add 3 tabs, specifying the tab's text and TabListener
for (int i = 0; i < 3; i++) {
actionBar.addTab(
actionBar.newTab()
.setText("Aplikasi" + (i + 1))
.setTabListener(tabListener));
}
for (int i = 1; i < 3; i++) {
actionBar.addTab(
actionBar.newTab()
.setText("Pengembang" + (i + 1))
.setTabListener(tabListener));
}
for (int i = 2; i < 3; i++) {
actionBar.addTab(
actionBar.newTab()
.setText("Coba" + (i + 1))
.setTabListener(tabListener));
}
}
}
我想要我的应用程序就像这张图片。
