我的程序运行正常，但是当我添加admob时，我得到nullpointer异常错误 这是我的代码：
public class HomeActivity extends SherlockFragmentActivity implements OnRestResponseHandler, OnBackStackChangedListener, OnGetViewListener, OnFragmentClickListener {
private InterstitialAd interstitial;
private final String TAG = "HomeActivity";
private final String KEY_LIST_DATA = "list_cache";
private final String KEY_LIST_POSITION = "list_position";
private static ImageLoader mImageLoader;
private ArrayList<NodeCategory> mData;
private int mPosition = -1;
private boolean mIgnoreSelection = false;
@Override
public void onCreate (Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.getSupportFragmentManager().addOnBackStackChangedListener(this);
super.setContentView(R.layout.activity_home);
this.loadData(savedInstanceState);
//ad
// Create the interstitial.
interstitial = new InterstitialAd(this);
interstitial.setAdUnitId("XXXXXXX");
// Create ad request.
AdRequest adRequest = new AdRequest.Builder().build();
// Begin loading your interstitial.
interstitial.loadAd(adRequest);
//ad
AdView adView = (AdView)findViewById(R.id.adView);
AdRequest adRequest1 = new AdRequest.Builder().build();
adView.loadAd(adRequest1);
//timer ad
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
// Invoke displayInterstitial() when you are ready to display an interstitial.
if (interstitial.isLoaded()) {
interstitial.show();
}
}
}, 5000);
//ad
if (savedInstanceState == null) {
BitmapDisplayer displayer = getResources().getBoolean(R.bool.config_enable_image_fade_in)
? new FadeInBitmapDisplayer(getResources().getInteger(R.integer.config_fade_in_time))
: new SimpleBitmapDisplayer();
final DisplayImageOptions options = new DisplayImageOptions.Builder()
.displayer(displayer)
.cacheInMemory()
.cacheOnDisc()
.build();
final ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(this)
.threadPriority(Thread.NORM_PRIORITY - 1)
.offOutOfMemoryHandling()
.tasksProcessingOrder(QueueProcessingType.FIFO)
.defaultDisplayImageOptions(options)
.build();
mImageLoader = ImageLoader.getInstance();
mImageLoader.init(config);
}
}
@Override
public void onSaveInstanceState (Bundle outState) {
if (this.mData != null) {
outState.putSerializable(KEY_LIST_DATA, this.mData);
outState.putInt(KEY_LIST_POSITION, this.mPosition);
}
super.onSaveInstanceState(outState);
}
public void loadData (Bundle savedInstanceState) {
// Check Network State
if (!NetworkUtil.getNetworkState(this)) {
final RetryFragment fragment = RetryFragment.getFragmentWithMessage("No connection");
this.addFragment(fragment, RetryFragment.TAG, true);
return;
}
if (savedInstanceState == null || savedInstanceState.get(KEY_LIST_DATA) == null) {
final String url = "http://something";
if (url != null && URLUtil.isValidUrl(url)) {
// Add Loading Fragment
final LoadingFragment fragment = new LoadingFragment();
this.addFragment(fragment, LoadingFragment.TAG, true);
// Load Data
final RestClientHandler handler = new RestClientHandler(this);
RestClient.get(this, url, handler);
}
} else {
Log.i(TAG, "Restored Instance");
this.mData = (ArrayList<NodeCategory>) savedInstanceState.get(KEY_LIST_DATA);
this.mPosition = savedInstanceState.getInt(KEY_LIST_POSITION);
if (this.mPosition != -1) {
mIgnoreSelection = true;
}
this.configureActionBar();
}
}
@Override
public void onResponse (ArrayList<NodeCategory> response) {
this.mData = response;
// Add ERROR Fragment
if (this.mData == null) {
final RetryFragment fragment = RetryFragment.getFragmentWithMessage();
this.addFragment(fragment, RetryFragment.TAG, true);
return;
}
if (this.mData.isEmpty()) {
this.addFragment(null, null, true);
Toast.makeText(getApplicationContext(), "Empty Manifest!", Toast.LENGTH_SHORT).show();
return;
}
this.configureActionBar();
}
public void configureActionBar () {
super.getSupportActionBar().setDisplayHomeAsUpEnabled(false);
super.getSupportActionBar().setDisplayShowHomeEnabled(true);
if (this.mData.size() == 1) {
final NodeCategory node = this.mData.get(0);
super.getSupportActionBar().setDisplayShowTitleEnabled(true);
super.getSupportActionBar().setTitle(node.name);
this.onCategorySelected(node);
} else {
super.getSupportActionBar().setDisplayShowTitleEnabled(false);
super.getSupportActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
super.getSupportActionBar().setListNavigationCallbacks(new Adapter(this, this, this.mData), this);
if (this.mPosition != -1) {
this.mIgnoreSelection = true;
super.getSupportActionBar().setSelectedNavigationItem(this.mPosition);
}
}
}
public void addFragment (SherlockFragment fragment, String tag, boolean clearStack) {
final FragmentManager fm = super.getSupportFragmentManager();
final FragmentTransaction transaction = fm.beginTransaction();
// Clear Back Stack
if (clearStack) {
for (int x = 0; x < fm.getBackStackEntryCount(); x++) {
fm.popBackStack();
}
}
if (fragment != null) {
if (!clearStack) {
transaction.replace(R.id.container, fragment, tag);
transaction.addToBackStack(null);
transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
} else {
transaction.replace(R.id.container, fragment, tag);
}
try {
transaction.commit();
} catch (Exception e) {
}
}
}
@Override
public boolean onNavigationItemSelected (int itemPosition, long itemId) {
Log.i(TAG, "Item Selection: " + itemPosition);
this.mPosition = itemPosition;
if (this.mIgnoreSelection == true) {
this.mIgnoreSelection = false;
return false;
}
this.onCategorySelected(this.mData.get(itemPosition));
return false;
}
@Override
public void onCategorySelected (NodeCategory node) {
final SherlockFragment frag = new CategoryFragment();
final Bundle args = new Bundle();
args.putSerializable(CategoryFragment.BUNDLE_TAG, node.wallpaperList);
frag.setArguments(args);
this.addFragment(frag, CategoryFragment.FRAGMENT_TAG, true);
}
@Override
public void onWallpaperSelected (NodeWallpaper node) {
final SherlockFragment frag = new WallpaperFragment();
final Bundle args = new Bundle();
args.putSerializable(WallpaperFragment.BUNDLE_TAG, node);
frag.setArguments(args);
this.addFragment(frag, WallpaperFragment.FRAGMENT_TAG, false);
}
@Override
public View getView (int position, View convertView, ViewGroup parent, LayoutInflater mInflater) {
final TextView t = new TextView(this);
t.setText(this.mData.get(position).name);
t.setTextSize(20);
t.setPadding(5, 6, 2, 6);
t.setSingleLine(true);
return t;
}
@Override
public void onBackStackChanged () {
final FragmentManager fm = super.getSupportFragmentManager();
if (fm.getBackStackEntryCount() == 0) {
this.configureActionBar();
}
}
private final String HIDE = "Hide Launcher Icon";
private final String SHOW = "Show Launcher Icon";
private final int HIDE_ID = 0;
private final int SHOW_ID = 1;
private final int FLAG_SHOW = PackageManager.COMPONENT_ENABLED_STATE_ENABLED;
private final int FLAG_HIDE = PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
private final int DONT_KILL_APP = PackageManager.DONT_KILL_APP;
@Override
public boolean onCreateOptionsMenu (Menu menu) {
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onPrepareOptionsMenu (Menu menu) {
menu.clear();
menu.add(3, 3, 3, ((isShowing()) ? HIDE : SHOW)).setShowAsAction(MenuItem.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW);
return super.onPrepareOptionsMenu(menu);
}
@SuppressWarnings("deprecation")
@Override
public boolean onOptionsItemSelected (MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home: {
final FragmentManager fm = super.getSupportFragmentManager();
fm.popBackStack();
return true;
}
default: {
if (item.getTitle().equals(SHOW)) {
Log.i(TAG, "Show");
super.showDialog(SHOW_ID);
return true;
} else if (item.getTitle().equals(HIDE)) {
Log.i(TAG, "Hide");
super.showDialog(HIDE_ID);
return true;
} else {
return super.onOptionsItemSelected(item);
}
}
}
}
@Override
protected Dialog onCreateDialog (int id) {
if (id == HIDE_ID) {
return (new AlertDialog.Builder(this)).setCancelable(true).setTitle("Hide App Icon").setIcon(android.R.drawable.ic_dialog_alert).setMessage("This option will remove the icon from your app drawer.").setPositiveButton("Remove", new DialogInterface.OnClickListener() {
public void onClick (DialogInterface dialog, int which) {
hideIcon();
dialog.dismiss();
}
}).setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick (DialogInterface dialog, int which) {
dialog.dismiss();
}
}).create();
} else if (id == SHOW_ID) {
return (new AlertDialog.Builder(this)).setCancelable(true).setTitle("Show App Icon").setIcon(android.R.drawable.ic_dialog_alert).setMessage("This option will restore the icon into your app drawer.").setPositiveButton("Show", new DialogInterface.OnClickListener() {
public void onClick (DialogInterface dialog, int which) {
showIcon();
dialog.dismiss();
}
}).setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick (DialogInterface dialog, int which) {
dialog.dismiss();
}
}).create();
}
return null;
}
public boolean isShowing () {
PackageManager p = super.getPackageManager();
return (p.getComponentEnabledSetting(getComponenetName()) == PackageManager.COMPONENT_ENABLED_STATE_ENABLED || p.getComponentEnabledSetting(getComponenetName()) == PackageManager.COMPONENT_ENABLED_STATE_DEFAULT);
}
private void hideIcon () {
getPackageManager().setComponentEnabledSetting(getComponenetName(), FLAG_HIDE, DONT_KILL_APP);
}
private void showIcon () {
getPackageManager().setComponentEnabledSetting(getComponenetName(), FLAG_SHOW, DONT_KILL_APP);
}
private ComponentName getComponenetName () {
ComponentName c = new ComponentName(this, LauncherActivity.class);
return c;
}
}
这里是log cat
02-23 14:50:00.491: E/AndroidRuntime(1531): FATAL EXCEPTION: main
02-23 14:50:00.491: E/AndroidRuntime(1531): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.safshari.wallpaperen/com.safshari.wallpaperen.HomeActivity}: java.lang.NullPointerException
02-23 14:50:00.491: E/AndroidRuntime(1531): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
02-23 14:50:00.491: E/AndroidRuntime(1531): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
02-23 14:50:00.491: E/AndroidRuntime(1531): at android.app.ActivityThread.access$600(ActivityThread.java:141)
02-23 14:50:00.491: E/AndroidRuntime(1531): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
02-23 14:50:00.491: E/AndroidRuntime(1531): at android.os.Handler.dispatchMessage(Handler.java:99)
02-23 14:50:00.491: E/AndroidRuntime(1531): at android.os.Looper.loop(Looper.java:137)
02-23 14:50:00.491: E/AndroidRuntime(1531): at android.app.ActivityThread.main(ActivityThread.java:5103)
02-23 14:50:00.491: E/AndroidRuntime(1531): at java.lang.reflect.Method.invokeNative(Native Method)
02-23 14:50:00.491: E/AndroidRuntime(1531): at java.lang.reflect.Method.invoke(Method.java:525)
02-23 14:50:00.491: E/AndroidRuntime(1531): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
02-23 14:50:00.491: E/AndroidRuntime(1531): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
02-23 14:50:00.491: E/AndroidRuntime(1531): at dalvik.system.NativeStart.main(Native Method)
02-23 14:50:00.491: E/AndroidRuntime(1531): Caused by: java.lang.NullPointerException
02-23 14:50:00.491: E/AndroidRuntime(1531): at com.safshari.wallpaperen.HomeActivity.onCreate(HomeActivity.java:82)
02-23 14:50:00.491: E/AndroidRuntime(1531): at android.app.Activity.performCreate(Activity.java:5133)
02-23 14:50:00.491: E/AndroidRuntime(1531): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
02-23 14:50:00.491: E/AndroidRuntime(1531): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
02-23 14:50:00.491: E/AndroidRuntime(1531): ... 11 more
我应该把广告放在哪里不要收到此错误？ 程序工作正常没有广告和xml工作得很好这个页面是主要的布局。