![](/img/trans.png)
[英]How to go one Fragment to another when I will click on TextView Id?
[英]Fragment duplicates when I go to another Fragment
實際上,這是我的主要問題。 我有一個NavigationDrawer
並且正在對其進行很多更改。 因為我已經在其中添加了TabHostFragment
。 問題是當我在一個Fragment
,我有一個ActionBar
圖標轉到另一個Fragment
。 當時這樣做很完美。 但是當我轉到另一個Fragment
,它仍然在新Fragment
的背面。 我試圖為每個Fragment
設置BackGround
顏色,但它不可見。
問題在於事務正常。 但是當我在另一個Fragment
,當我按BlankSpace
(例如)時,在舊Fragment
有一個帶有Toast
的按鈕,它仍在新Fragment
上顯示此Toast
。
以下是一些有關圖像可能發生的例子,您可以更好地理解我的問題:
當我通過毫無意義的“ Fragment
(在MainActivity
上稱其為“ Fragment
)時,就會出現主要問題。 因為我想在特定Fragment
上調用它; 但這是我可以稱呼的唯一Fragment
...
這是MainActivity
,我稱之為FragmentTransaction
:
case R.id.newOffer:
android.app.FragmentManager fm = getFragmentManager();
android.app.FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.frame_container, new TipusNouProducte());
ft.commit();
return true;
順便說一句,我在這里將NavigationDrawer
的代碼留給您,這些代碼總是在我遍歷Fragment
時說: “創建Fragment時出錯” :
private void displayView(int position) {
mDrawerList.setItemChecked(position, true);
mDrawerList.setSelection(position);
setTitle(navMenuTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
Fragment fragment = null;
switch (position) {
case 0:
fragment = new TabHostFragment();
break;
case 1:
fragment = new LocalizacionFragment();
break;
case 2:
fragment = new ListaProductosFragment();
break;
case 3:
fragment = new ConfiguracionFragment(this);
break;
case 4:
fragment = new AyudaSugerenciasFragment();
break;
case 5:
fragment = new AyudaSugerencias();
break;
case 6:
finish();
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getSupportFragmentManager();
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");
}
}
如果您需要更多代碼,可能會導致此問題,請隨時問我; 然后我將盡快更新。
TabHostFragment.xml
<android.support.v4.app.FragmentTabHost xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@android:id/tabhost"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TabWidget
android:id="@android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" />
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="0" />
<FrameLayout
android:id="@+id/realtabcontent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1" />
</LinearLayout>
</android.support.v4.app.FragmentTabHost>
MainActivity代碼如下所示:
public class MainActivity extends FragmentActivity {
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
// saber si esta abierto
public boolean mDrawerOpened;
// nav drawer title
private CharSequence mDrawerTitle;
private FragmentTabHost mTabHost;
// used to store app title
private CharSequence mTitle;
//para ponerlo visible
public MenuItem mi;
// 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);
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 array
// 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[1], navMenuIcons.getResourceId(1, -1)));
// Communities, Will add a counter here
navDrawerItems.add(new NavDrawerItem(navMenuTitles[2], navMenuIcons.getResourceId(2, -1)));
// Pages
navDrawerItems.add(new NavDrawerItem(navMenuTitles[3], navMenuIcons.getResourceId(3, -1)));
// What's hot, We will add a counter here
navDrawerItems.add(new NavDrawerItem(navMenuTitles[4], navMenuIcons.getResourceId(4, -1)));
//AyudaSugerencias
navDrawerItems.add(new NavDrawerItem(navMenuTitles[5], navMenuIcons.getResourceId(5, -1)));
navDrawerItems.add(new NavDrawerItem(navMenuTitles[6], navMenuIcons.getResourceId(6, -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().setBackgroundDrawable(new ColorDrawable(0xff1d97dd));
getActionBar().setHomeButtonEnabled(true);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.drawable.ic_drawer, //nav menu toggle icon
R.string.app_name, // nav drawer open - description for accessibility
R.string.app_name // nav drawer close - description for accessibility
) {
public void onDrawerClosed(View view) {
getActionBar().setTitle(
Html.fromHtml("<font color='ffffff'>"
+ mTitle + "</font>"));
// calling onPrepareOptionsMenu() to show action bar icons
invalidateOptionsMenu();
mDrawerOpened = false;
syncState();
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(
Html.fromHtml("<font color='ffffff'>"
+ mDrawerTitle + "</font>"));
// calling onPrepareOptionsMenu() to hide action bar icons
invalidateOptionsMenu();
mDrawerOpened = true;
syncState();
}
};
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) {
Fragment fragment = null;
// 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:
return true;
case R.id.ofertasRefresh:
return true;
case R.id.menu_search:
return true;
case R.id.newOffer:
android.app.FragmentManager fm = getFragmentManager();
android.app.FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.frame_container, new TipusNouProducte());
ft.commit();
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);
if (mDrawerOpened) {
menu.removeItem(R.id.ofertasRefresh);
menu.removeItem(R.id.menu_search);
menu.removeItem(R.id.newOffer);
}
if (!mDrawerOpened) {
menu.add(Menu.NONE, R.id.ofertasRefresh, Menu.NONE, mTitle);
}
return super.onPrepareOptionsMenu(menu);
}
/**
* Diplaying fragment view for selected nav drawer list item
*/
private void displayView(int position) {
mDrawerList.setItemChecked(position, true);
mDrawerList.setSelection(position);
setTitle(navMenuTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
Fragment fragment = null;
switch (position) {
case 0:
fragment = new TabHostFragment();
break;
case 1:
fragment = new LocalizacionFragment();
break;
case 2:
fragment = new ListaProductosFragment();
break;
case 3:
fragment = new ConfiguracionFragment(this);
break;
case 4:
fragment = new AyudaSugerenciasFragment();
break;
case 5:
fragment = new AyudaSugerencias();
break;
case 6:
finish();
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getSupportFragmentManager();
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);
}
/**
* When using the ActionBarDrawerToggle, you must call it during
* onPostCreate() and onConfigurationChanged()...
*/
@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);
}
}
TabHostFragment
看起來像:
public class TabHostFragment extends Fragment {
// Declaring our tabs and the corresponding fragments.
public TabHostFragment(){
}
private FragmentTabHost mTabHost;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.tab_host_test2, container, false);
mTabHost = (FragmentTabHost)rootView.findViewById(android.R.id.tabhost);
mTabHost.setup(getActivity(), getChildFragmentManager(), R.id.realtabcontent);
mTabHost.addTab(mTabHost.newTabSpec("Mis ofertas").setIndicator("Mis ofertas"),
MisOfertasFragment.class, null);
mTabHost.addTab(mTabHost.newTabSpec("Mis recomendaciones").setIndicator("Mis recomendaciones"),
RecomendacionesFragment.class, null);
return rootView;
}
}
我不確定這是造成您問題的原因,但絕對有問題的一件事是使用本機 FragmentManager
而不是支持庫中的那個。
在您的代碼中,替換
case R.id.newOffer:
android.app.FragmentManager fm = getFragmentManager();
android.app.FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.frame_container, new TipusNouProducte());
ft.commit();
return true;
同
case R.id.newOffer:
android.support.v4.app.FragmentManager fm = getSupportFragmentManager();
android.support.v4.app.FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.frame_container, new TipusNouProducte());
ft.commit();
return true;
您已經在代碼的其他地方使用了支持庫的 FragmentManager
,因此您應該繼續在各處使用它。
另外, TipusNouProducte
應該擴展android.support.v4.app.Fragment
而不是 android.app.Fragment
。
如果發現更多問題,我將更新此答案。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.