我在实现 ActionBar Sherlock 时遇到了很多问题，最后一个就是这个。我的操作栏中有一个带有 3 个选项的幻灯片菜单。我的问题是，当我选择之前选择的一个项目（它加载一个片段）时，应用程序崩溃。日志错误是
指定的孩子已经有一个父母。您必须首先在孩子的父母上调用 removeView()。
它标记了我将视图添加到 HorizontalScroller 的行。
lls.addView(mviews.get(i));
在我的 OnCreateView 我有
final View v = inflater.inflate(R.layout.activity_landing, container,false);
container.removeAllViews();
我已经尝试了许多不同的方法在这里发布，但我没有得到解决我的问题的方法。有任何想法吗？
编辑：这是我的 MainActivity 和 Fragment 的一些代码。
这是主活动。之后有一个 ScreenSplash 和一个从控制所有 WebService 通信的 Application 扩展的类。
public class MainActivity extends SherlockFragmentActivity {
//Declare Variables
//...
Fragment fragment1 = new Fragment1();
Fragment fragment2 = new Fragment2();
Fragment fragment3 = new Fragment3();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
getSupportActionBar().setIcon(R.drawable.ic_launcher);
getSupportActionBar().setTitle("");
setContentView(R.layout.drawer_main);
// Generate title
title = new String[] { "Item 1", "Item 2", "Item 3", "Item 4" };
// Generate icon
icon = new int[] { R.drawable.item1, R.drawable.item2,
R.drawable.item3, R.drawable.item4};
// Locate DrawerLayout in drawer_main.xml
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
// Locate ListView in drawer_main.xml
mDrawerList = (ListView) findViewById(R.id.left_drawer);
// Set a custom shadow that overlays the main content when the drawer
// opens
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,
GravityCompat.START);
// Pass results to MenuListAdapter Class
mMenuAdapter = new MenuListAdapter(this, title, subtitle, icon);
// Set the MenuListAdapter to the ListView
mDrawerList.setAdapter(mMenuAdapter);
// Capture button clicks on side menu
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
// Enable ActionBar app icon to behave as action to toggle nav drawer
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
// ActionBarDrawerToggle ties together the the proper interactions
// between the sliding drawer and the action bar app icon
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.drawable.ic_drawer, R.string.drawer_open,
R.string.drawer_close) {
public void onDrawerClosed(View view) {
// TODO Auto-generated method stub
super.onDrawerClosed(view);
}
public void onDrawerOpened(View drawerView) {
// TODO Auto-generated method stub
super.onDrawerOpened(drawerView);
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
selectItem(0);
}
}
//FOR ABS y ND
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getSupportMenuInflater().inflate(R.menu.activity_main, menu);
//Define ActionBar buttons and actions
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
//Sliding lateral Menu
if (item.getItemId() == android.R.id.home) {
if (mDrawerLayout.isDrawerOpen(mDrawerList)) {
mDrawerLayout.closeDrawer(mDrawerList);
} else {
mDrawerLayout.openDrawer(mDrawerList);
}
}
return super.onOptionsItemSelected(item);
}
// The click listener for ListView in the navigation drawer
private class DrawerItemClickListener implements
ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
selectItem(position);
}
}
private void selectItem(int position) {
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
// Locate Position
switch (position) {
case 0:
ft.replace(R.id.content_frame, fragment1);
break;
case 1:
ft.replace(R.id.content_frame, fragment2);
break;
case 2:
ft.replace(R.id.content_frame, fragment3);
break;
}
ft.commit();
mDrawerList.setItemChecked(position, true);
// Close drawer
mDrawerLayout.closeDrawer(mDrawerList);
}
@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 toggles
mDrawerToggle.onConfigurationChanged(newConfig);
}
}
这是有错误的片段。现在另外两个是空的。
public class Fragment1 extends SherlockFragment implements
AdapterView.OnItemClickListener {
//DeclareVariables
public Fragment1() {
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//some declaration ad settings (witdhs, typefaces, caches,...)
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final View v = inflater.inflate(R.layout.main_activity, null,
false);
container.removeAllViews();
lls = (LinearLayout) v.findViewById(R.id.lscroll_item);
lls.removeAllViews();
//Instantiate some elements of the view such as TextViews and ImageViews
//layoutParams
// Show Scroll
DataStore.sharedInstance().getInfo(
new DataStore.infoReturn() {
@Override
public void call(final ArrayList<User> users, int error) {
if(users != null){
for (i = 0; i < users.size(); i++) {
mviews.add((RelativeLayout) getActivity().getLayoutInflater().inflate(R.layout.item_user, null));
mviews.get(i).setLayoutParams(layoutParams2);
imv = (ImageView) mviews.get(i).findViewById(R.id.user);
imv.getLayoutParams().height=friend_height;
imv_click = (ImageView) mviews.get(i).findViewById(R.id.click);
TextView text2 = (TextView) mviews.get(i).findViewById(R.id.fav);
text2.setTypeface(myTypeFace);
//set widths and layoutParams and sources
mviews.get(i).setId(i);
//NEXT LINE IS THE CRASH POINT, WHERE I TRY TO ADD ITEMS TO THE VIEW
lls.addView(mviews.get(i));
mviews.get(i).setOnClickListener(
new OnClickListener() {
@Override
public void onClick(View v) {
//Set actins when click
}
});
}
}else{
switch (error) {
case -1: //ERROR OBTENER USERS
break;
default:
break;
}
}
}
});
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
// actions when click
}
@Override
public void onResume() {
super.onResume();
refreshInfo();
refreshSelectedUsers();
}
@Override
public void onPause() {
super.onPause();
DataStore.sharedInstance().setSelectedUsers(mSelected);
}
@Override
public void onDestroy() {
super.onDestroy();
//delete cache
}
//Some other methods for other UI items.
}
我隐藏了一些代码以使其更易于阅读。