当我在另一个片段中单击一个对话框时,我正在尝试打开一个片段。我正在使用ActionBarSherlock和Tab。我的片段附加在视图寻呼机中。我几乎完成了这项工作。但我不能替换视图寻呼机内的新片段。我收到了一个错误。我读了帖子here。解决方案尚不清楚。
错误:
10-18 21:34:40.379:E / AndroidRuntime(19618):致命异常:主要 10-18 21:34:40.379:E / AndroidRuntime(19618): java.lang.IllegalArgumentException:找不到id 0x7f040032的视图 片段的(com.example.actionbartestwithsherlock:id / pager) AllContactsFragment {41fd4ba0#0 id = 0x7f040032} 10-18 21:34:40.379: E / AndroidRuntime(19618):at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:903)
我有三个片段关联,其中寻呼机名为FragmentTab1,FragmentTab2& FragmentTab3。
我的 MainActivity & FragmentAdapter 如下所示:
public class MainActivity extends SherlockFragmentActivity {
ActionBar.Tab Tab1, Tab2, Tab3, Tab4;
private Context context = this;
// view pager
// Declare Variables
ActionBar actionBar;
ViewPager mPager;
Tab tab;
FragmentAdapter mAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// set application in portrait mode
ActivityHelper.initialize(this);
actionBar = getSupportActionBar();
actionBar.setDisplayShowHomeEnabled(true);
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Locate ViewPager in activity_main.xml
mPager = (ViewPager) findViewById(R.id.pager);
// add an adapter to pager
mPager.setAdapter(new FragmentAdapter(getSupportFragmentManager(),
mPager, actionBar));
addActionBarTabs();
}
private void addActionBarTabs() {
String[] tabs = { "Tab 1", "Tab 2", "Tab 3" };
for (String tabTitle : tabs) {
ActionBar.Tab tab = actionBar.newTab().setText(tabTitle)
.setTabListener(tabListener);
actionBar.addTab(tab);
}
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
}
private ActionBar.TabListener tabListener = new ActionBar.TabListener() {
@Override
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
mPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {
}
@Override
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {
}
};
class FragmentAdapter extends FragmentPagerAdapter implements
ViewPager.OnPageChangeListener {
private ViewPager mViewPager;
final int TOTAL_PAGES = 3;
public FragmentAdapter(FragmentManager fm, ViewPager pager,
ActionBar actionBar) {
super(fm);
this.mViewPager = pager;
this.mViewPager.setOnPageChangeListener(this);
}
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return FragmentTab1.newInstance();
case 1:
return FragmentTab2.newInstance();
case 2:
return FragmentTab3.newInstance();
default:
throw new IllegalArgumentException(
"The item position should be less or equal to:"
+ TOTAL_PAGES);
}
}
@Override
public int getCount() {
return TOTAL_PAGES;
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageSelected(int position) {
actionBar.setSelectedNavigationItem(position);
}
}
}
现在,在我的第一个标签 FragmentTab1 中,当按下按钮时,我会打开一个自定义对话框。我想在选择对话框选项时替换FragmentTab1中的新片段 AllContactsFragment 。
FragmentTab1片段类:
public class FragmentTab1 extends SherlockFragment implements OnClickListener {
Button btnTest;
ViewPager pager;
LinearLayout layoutBlockNumbers;
LinearLayout layoutContact, layoutCallLog, layoutSMSLog, layoutManually;
Context context;
CustomizedDialog dialog;
private static final int CONTACT_PICKER_RESULT = 1001;
private static final String DEBUG_TAG = "Contact List";
private static final double RESULT_OK = -1;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragmenttab1, container,
false);
layoutBlockNumbers = (LinearLayout) rootView
.findViewById(R.id.layoutAddBlockNumbers);
layoutBlockNumbers.setOnClickListener(this);
return rootView;
}
@Override
public void onClick(View v) {
if (v == layoutCallLog) {
dialog.dismiss();
// want to replace new fragment at position 0 in pager
// problem is here ??? how to open new fragmnet
Fragment allContactsFragment = AllContactsFragment.newInstance();
FragmentTransaction transaction = getChildFragmentManager()
.beginTransaction();
transaction.addToBackStack(null);
transaction.replace(R.id.pager, allContactsFragment).commit();
}
if (v == layoutBlockNumbers) {
// open a dialog
showDialog();
} else if (v == layoutContact) {
openContactList();
dialog.dismiss();
} else if (v == layoutSMSLog) {
}
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
setUserVisibleHint(true);
}
// open a dialog
private void showDialog() {
dialog = new CustomizedDialog(getActivity());
dialog.setContentView(R.layout.dialog_add_number_type);
dialog.setTitle("Add Black List Number");
//initialize all linear layouts in dialog
layoutCallLog = (LinearLayout) dialog.findViewById(R.id.layoutCallLog);
layoutContact = (LinearLayout) dialog.findViewById(R.id.layoutContact);
layoutSMSLog = (LinearLayout) dialog.findViewById(R.id.layoutSMSLog);
layoutManually = (LinearLayout) dialog
.findViewById(R.id.layoutManually);
// add listener to several linear layout
layoutContact.setOnClickListener(this);
layoutCallLog.setOnClickListener(this);
layoutSMSLog.setOnClickListener(this);
layoutManually.setOnClickListener(this);
dialog.show();
}
public static Fragment newInstance() {
Fragment f = new FragmentTab1();
return f;
}
}
activity_main.xml如下所示:
<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.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
</android.support.v4.view.ViewPager>
</RelativeLayout>
任何人都可以帮我解决这个问题吗?对于大量代码感到抱歉。
答案 0 :(得分:1)
我不确定你能按照自己想要的方式做事。 ViewPager
的设置方式与普通容器/片段设置的设置方式不同。在ViewPager
中,您没有使用片段事务来添加片段,而是使用从后备列表中加载片段实例的适配器。
更换片段的工作原理如下:
(1)创建要添加的片段的实例
(2)将该片段添加到支持PagerAdapter
的列表中
(3)显示新片段
(4)删除旧的
在当前项目中实现此问题的方法是设置适配器。目前,您使用的交换机语句只能返回固定数量的片段。您的适配器应该设置这样的东西。
class MyPageAdapter extends FragmentPagerAdapter{
private List<Fragment> fragments
public MyPageAdapter(FragmentManager fm, List<Fragment> fragments) {
super(fm);
this.fragments = fragments;
}
@Override
public Fragment getItem(int position) {
return this.fragments.get(position);
}
@Override
public int getCount() {
return this.fragments.size();
}
}
然后,您只需向适配器类添加一个方法即可添加或删除新片段。如果您知道要替换的片段的索引,那么完成此操作应该非常简单。您所要做的就是创建联系人片段的新实例,将其添加到您的阵列或列表中。 This Post解释了ViewPager
如何处理新内容的添加/删除以及如何确保显示新片段。
答案 1 :(得分:0)
在我阅读this帖后,我解决了答案。
我只是添加一个ID android:id =“@ + id / fragmentTabLayout1到我的fragmenttab1.xml的顶部布局。然后调用 像往常一样的新片段:
Fragment allContactsFragment = AllContactsFragment.newInstance();
FragmentTransaction transaction = getChildFragmentManager()
.beginTransaction();
transaction.addToBackStack(null);
// use this id to replace new fragment
transaction.replace(R.id.fragmentTabLayout1, allContactsFragment).commit();