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我一直试图用列表视图中的项目被按下时用另一个替换当前片段。但是，当按钮被按下时，onClick方法被触发，但它不会替换片段。无法在viewpager中替换片段
JournalFragment.java
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.fragment_journal_view, container, false);
context = getContext();
ListView myView = (ListView) rootView.findViewById(R.id.listView);
TableControllerUser TCU = new TableControllerUser(context);
final TableControllerJournal TCJ = new TableControllerJournal(context);
int accID = TCU.getLoggedInId();
Cursor cursor = TCJ.getAllJournals(accID);
Cursor allFood = TCJ.getAllFoodJournals(accID);
Cursor allActivity = TCJ.getAllActivityJournals(accID);
Cursor[] cursors = {cursor, allFood, allActivity};
MergeCursor m = new MergeCursor(cursors);
final JournalAdapter adapter = new JournalAdapter(context, m, 0);
myView.setAdapter(adapter);
myView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Cursor c = (Cursor) adapter.getItem(position);
Toast.makeText(getActivity(), "onClick Pressed!", Toast.LENGTH_SHORT).show();
String title = c.getString(c.getColumnIndexOrThrow("title"));
if (title.contains("Glucose")) {
String glucose = c.getString(c.getColumnIndexOrThrow("glucose"));
String dateTime = c.getString(c.getColumnIndexOrThrow("glucose_time"));
String journalId = c.getString(c.getColumnIndexOrThrow("_id"));
String split[] = dateTime.split(" ");
String date = split[0];
String time = split[1];
Fragment gluFrag = new GlucoseFragment();
Bundle bundle = new Bundle();
bundle.putString("time", time);
bundle.putString("date", date);
bundle.putString("glucose", glucose);
bundle.putString("journalId", journalId);
gluFrag.setArguments(bundle);
((GraphActivity) getActivity()).replaceFragments(gluFrag, bundle);
}
}
});
return rootView;
// Inflate the layout for this fragment
}
}
JournalFragment.XML
<LinearLayout 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"
tools:context="edu.tp.sghealthapp.JournalViewFragment"
android:id="@+id/jv">
<ListView
android:id="@+id/listView"
android:layout_below="@+id/viewPager"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:divider="@color/iron"
android:dividerHeight="1dp" />
</LinearLayout>
JournalListViewLayout.XML
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
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">
<TextView
android:id="@+id/txt_listTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="@+id/arrowIcon"
android:layout_toStartOf="@+id/arrowIcon"
android:textColor="#000000"
android:focusable="false"
android:textSize="16sp"
android:typeface="sans" />
<ImageView
android:id="@+id/arrowIcon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:focusable="false"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:src="@drawable/ic_arrow" />
</RelativeLayout>
GraphActivity.java
public class GraphActivity extends AppCompatActivity {
Context context;
TabLayout mTabLayout;
ViewPager mViewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
context = getApplicationContext();
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_graph);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setElevation(0);
mTabLayout = (TabLayout) findViewById(R.id.tabLayout);
mViewPager = (ViewPager) findViewById(R.id.viewPager);
ViewPagerAdapter pgAdapter = new ViewPagerAdapter(getSupportFragmentManager());
pgAdapter.addFragments(new GraphFragment(), "Graph");
pgAdapter.addFragments(new JournalViewFragment(), "Journal");
mViewPager.setAdapter(pgAdapter);
mTabLayout.setupWithViewPager(mViewPager);
}
public void replaceFragments(Fragment newFragment, Bundle bundle) {
Fragment fragment = newFragment;
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
fragment.setArguments(bundle);
ft.replace(R.id.jv, fragment);
ft.commit();
}
}
编辑：
ActivityGraph.xml
<?xml version="1.0" encoding="utf-8"?>
<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:orientation="horizontal"
tools:context=".GraphActivity"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/graph">
<android.support.design.widget.TabLayout
android:id="@+id/tabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/primary"
app:tabGravity="fill"
app:tabMode="scrollable"
app:tabSelectedTextColor="@color/white"
app:tabTextColor="@color/black">
<!--To be fixed in future to occupy whole bar when mode = fixed-->
</android.support.design.widget.TabLayout>
<edu.tp.sghealthapp.library.graphViewPager
android:id="@+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@id/tabLayout"></edu.tp.sghealthapp.library.graphViewPager>
</RelativeLayout>
EDIT 2
试图哈伦的一个d Vivek_Neel的方法，他们都工作，但与格式
把安卓导致此问题：layout_below = “@ + ID/viewPager” 中的LinearLayout会导致片段不再显示
EDIT 3
与此https://stackoverflow.com/a/34573034/5509513
是您的if条件执行？ –
此ID是exidts R.id.jv吗？ – Haroon
@PradeepGupta if条件被执行，但片段事务不起作用 – Isaac