我正在构建一个使用3个片段的应用程序，第一个片段显示主页，第二个用于详细信息，第三个用于播放视频。任何文件都没有错误，但是当我运行它时，我遇到运行时错误，我不知道如何修复它。任何人都可以帮助我吗？
MainActivity.java：
public class MainActivity extends Activity implements NavigationDrawerFragment.NavigationDrawerCallbacks {
final Context context = this;
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
// nav drawer title
private CharSequence mDrawerTitle;
// used to store app title
private CharSequence mTitle;
// slide menu items
private String[] navMenuTitles;
private TypedArray navMenuIcons;
private ArrayList<NavDrawerItem> navDrawerItems;
private NavDrawerListAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
mTitle = mDrawerTitle = getTitle();
// load slide menu items
navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);
// nav drawer icons from resources
navMenuIcons = getResources()
.obtainTypedArray(R.array.nav_drawer_icons);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.list_slidermenu);
navDrawerItems = new ArrayList<NavDrawerItem>();
// adding nav drawer items to arrayonCreateOptionsMenu
// Home
navDrawerItems.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1)));
// Find People
navDrawerItems.add(new NavDrawerItem(navMenuTitles[1], navMenuIcons.getResourceId(1, -1)));
// Photos
navDrawerItems.add(new NavDrawerItem(navMenuTitles[2], navMenuIcons.getResourceId(2, -1)));
// Recycle the typed array
navMenuIcons.recycle();
mDrawerList.setOnItemClickListener(new SlideMenuClickListener());
// setting the nav drawer list adapter
adapter = new NavDrawerListAdapter(getApplicationContext(),
navDrawerItems);
mDrawerList.setAdapter(adapter);
// enabling action bar app icon and behaving it as toggle button
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.drawable.ic_drawer, //nav menu toggle icon
R.string.app_name
) {
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
// calling onPrepareOptionsMenu() to show action bar icons
invalidateOptionsMenu();
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
// calling onPrepareOptionsMenu() to hide action bar icons
invalidateOptionsMenu();
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
// on first time display view for first nav item
displayView(0);
}
}
/**
* Slide menu item click listener
* */
private class SlideMenuClickListener implements
ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// display view for selected nav drawer item
displayView(position);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// toggle nav drawer on selecting action bar app icon/title
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle action bar actions click
switch (item.getItemId()) {
case R.id.action_settings:
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.custom);
dialog.setTitle("Event Story");
// set the custom dialog components - text, image and button
TextView text = (TextView) dialog.findViewById(R.id.text);
text.setText("Develop and maintained by Raffcomm Technologies Sdn. Bhd");
Button dialogButton = (Button) dialog.findViewById(R.id.dialogButtonOK);
// if button is clicked, close the custom dialog
dialogButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
dialog.show();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
/* *
* Called when invalidateOptionsMenu() is triggered
*/
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
// if nav drawer is opened, hide the action items
boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
/**
* Diplaying fragment view for selected nav drawer list item
* */
public void onNavigationDrawerItemSelected(int position) {
// TODO Auto-generated method stub
}
private void displayView(int position) {
// update the main content by replacing fragments
Fragment fragment = null;
switch (position) {
case 0:
fragment = new HomeFragment();
break;
case 1:
fragment = new VideoFragment();
break;
case 2:
fragment = new ThirdFragment();
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.frame_container, fragment).commit();
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
mDrawerList.setSelection(position);
setTitle(navMenuTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
} else {
// error in creating fragment
Log.e("MainActivity", "Error in creating fragment");
}
}
@Override
public void setTitle(CharSequence title) {
mTitle = title;
getActionBar().setTitle(mTitle);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggls
mDrawerToggle.onConfigurationChanged(newConfig);
}
public void openBrowser(View view){
//Get url from tag
String url = (String)view.getTag();
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.addCategory(Intent.CATEGORY_BROWSABLE);
//pass the url to intent data
intent.setData(Uri.parse(url));
startActivity(intent);
}
}
HomeFragment：
public class HomeFragment extends Fragment{
public HomeFragment(){}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
return rootView;
}
}
fragment_main.xml：
<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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.eventstory.MainActivity$PlaceholderFragment" >
<ImageView
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:src="@drawable/homepage"
android:scaleType = "fitXY"
/>
</RelativeLayout>
logcat的：
12-13 19:02:16.376: W/ResourceType(9909): Found multiple library tables, ignoring...
12-13 19:02:17.658: I/art(9909): Alloc sticky concurrent mark sweep GC freed 2108(151KB) AllocSpace objects, 0(0B) LOS objects, 36% free, 11MB/17MB, paused 594us total 6.623ms
12-13 19:02:17.664: I/art(9909): Alloc partial concurrent mark sweep GC freed 273(25KB) AllocSpace objects, 0(0B) LOS objects, 40% free, 11MB/18MB, paused 794us total 6.052ms
12-13 19:02:17.676: I/art(9909): Alloc concurrent mark sweep GC freed 26(12KB) AllocSpace objects, 1(81KB) LOS objects, 40% free, 11MB/18MB, paused 903us total 10.972ms
12-13 19:02:17.676: I/art(9909): Forcing collection of SoftReferences for 549MB allocation
12-13 19:02:17.685: I/art(9909): Alloc concurrent mark sweep GC freed 11(344B) AllocSpace objects, 0(0B) LOS objects, 40% free, 11MB/18MB, paused 887us total 9.436ms
12-13 19:02:17.685: E/art(9909): Throwing OutOfMemoryError "Failed to allocate a 576000012 byte allocation with 7766112 free bytes and 180MB until OOM"
12-13 19:02:17.704: I/art(9909): Alloc concurrent mark sweep GC freed 3(96B) AllocSpace objects, 0(0B) LOS objects, 40% free, 11MB/18MB, paused 925us total 9.536ms
12-13 19:02:17.704: I/art(9909): Forcing collection of SoftReferences for 549MB allocation
12-13 19:02:17.715: I/art(9909): Alloc concurrent mark sweep GC freed 3(96B) AllocSpace objects, 0(0B) LOS objects, 40% free, 11MB/18MB, paused 1.967ms total 10.570ms
12-13 19:02:17.715: E/art(9909): Throwing OutOfMemoryError "Failed to allocate a 576000012 byte allocation with 7766112 free bytes and 180MB until OOM"
12-13 19:02:17.715: D/skia(9909): --- allocation failed for scaled bitmap
12-13 19:02:17.766: D/AndroidRuntime(9909): Shutting down VM
12-13 19:02:17.768: E/AndroidRuntime(9909): FATAL EXCEPTION: main
12-13 19:02:17.768: E/AndroidRuntime(9909): Process: com.example.eventstory, PID: 9909
12-13 19:02:17.768: E/AndroidRuntime(9909): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.eventstory/com.example.eventstory.MainActivity}: android.view.InflateException: Binary XML file line #11: Error inflating class <unknown>
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2442)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.app.ActivityThread.access$800(ActivityThread.java:156)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1351)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.os.Handler.dispatchMessage(Handler.java:102)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.os.Looper.loop(Looper.java:211)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.app.ActivityThread.main(ActivityThread.java:5373)
12-13 19:02:17.768: E/AndroidRuntime(9909): at java.lang.reflect.Method.invoke(Native Method)
12-13 19:02:17.768: E/AndroidRuntime(9909): at java.lang.reflect.Method.invoke(Method.java:372)
12-13 19:02:17.768: E/AndroidRuntime(9909): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1020)
12-13 19:02:17.768: E/AndroidRuntime(9909): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:815)
12-13 19:02:17.768: E/AndroidRuntime(9909): Caused by: android.view.InflateException: Binary XML file line #11: Error inflating class <unknown>
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.view.LayoutInflater.createView(LayoutInflater.java:633)
12-13 19:02:17.768: E/AndroidRuntime(9909): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:55)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:682)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:741)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
12-13 19:02:17.768: E/AndroidRuntime(9909): at com.example.eventstory.HomeFragment.onCreateView(HomeFragment.java:19)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.app.Fragment.performCreateView(Fragment.java:2053)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:894)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.app.BackStackRecord.run(BackStackRecord.java:834)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1452)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.app.Activity.performStart(Activity.java:6005)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2342)
12-13 19:02:17.768: E/AndroidRuntime(9909): ... 10 more
12-13 19:02:17.768: E/AndroidRuntime(9909): Caused by: java.lang.reflect.InvocationTargetException
12-13 19:02:17.768: E/AndroidRuntime(9909): at java.lang.reflect.Constructor.newInstance(Native Method)
12-13 19:02:17.768: E/AndroidRuntime(9909): at java.lang.reflect.Constructor.newInstance(Constructor.java:288)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.view.LayoutInflater.createView(LayoutInflater.java:607)
12-13 19:02:17.768: E/AndroidRuntime(9909): ... 24 more
12-13 19:02:17.768: E/AndroidRuntime(9909): Caused by: java.lang.OutOfMemoryError: Failed to allocate a 576000012 byte allocation with 7766112 free bytes and 180MB until OOM
12-13 19:02:17.768: E/AndroidRuntime(9909): at dalvik.system.VMRuntime.newNonMovableArray(Native Method)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:609)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:444)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:1004)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.content.res.Resources.loadDrawableForCookie(Resources.java:2694)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.content.res.Resources.loadDrawable(Resources.java:2576)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.content.res.TypedArray.getDrawable(TypedArray.java:749)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.widget.ImageView.<init>(ImageView.java:146)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.widget.ImageView.<init>(ImageView.java:135)
12-13 19:02:17.768: E/AndroidRuntime(9909): at android.widget.ImageView.<init>(ImageView.java:131)
12-13 19:02:17.768: E/AndroidRuntime(9909): ... 27 more
12-13 19:02:20.327: I/Process(9909): Sending signal. PID: 9909 SIG: 9
答案 0 :(得分：0)
您的活动应该实现NavigationDrawerCallbacks界面。
public class MainActivity extends Activity implements NavigationDrawerCallbacks
答案 1 :(得分：0)
在MainActivity中实现ListFragment.OnFragmentInteractionListener ..