【发布时间】：2016-07-25 15:41:20
【问题描述】：
我有一种情况需要一些建议。我有一个具有可扩展列表视图的应用程序。每个子点击都会将用户发送到下一个活动，这是一个带有列表视图的选项卡布局。选项卡布局有 3 个选项卡。我试图弄清楚当在可扩展列表视图上单击孩子时如何将数据发送到 3 个选项卡列表视图。
原本我打算在 setOnChildClickListener 中这样设置：
expandableListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
if (groupPosition == 0) {
if (childPosition == 0) {
mCustomListViewAdapter.addAdapterItem(new CustomObject("Squats", "60%", "6", "150", false));
listViewFri.setAdapter(mCustomListViewAdapter);
编辑：这是我设置 3 个选项卡的选项卡布局活动。我不确定在哪里可以访问捆绑的附加功能。
public class WorkoutDaysActivity extends BaseActivity {
ListView listViewFri = (ListView) findViewById(R.id.listViewFri);
ListView listViewMon = (ListView) findViewById(R.id.listViewMon);
ListView listViewWed = (ListView) findViewById(R.id.listViewWed);
/**
* The {@link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {@link FragmentPagerAdapter} derivative, which will keep every
* loaded fragment in memory. If this becomes too memory intensive, it
* may be best to switch to a
* {@link android.support.v4.app.FragmentStatePagerAdapter}.
*/
private SectionsPagerAdapter mSectionsPagerAdapter
/**
* The {@link ViewPager} that will host the section contents.
*/
private ViewPager mViewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.workout_days);
Bundle extras = getIntent().getBundleExtra("args");
mToolBar = activateToolbarWithHomeEnabled();
setUpNavigationDrawer();
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.container);
mViewPager.setAdapter(mSectionsPagerAdapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(mViewPager);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_workout_days, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
public PlaceholderFragment() {
}
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
switch (getArguments().getInt(ARG_SECTION_NUMBER)) {
case 1:
View rootView = inflater.inflate(R.layout.fragment_workout_days, container, false);
Bundle extras = getArguments();
CustomObject objects = (CustomObject) extras.getSerializable("w29w1");
return rootView;
case 2: View rootView2 = inflater.inflate(R.layout.fragment_sub_page1, container, false);
TextView textView2 = (TextView) rootView2.findViewById(R.id.textView2);
textView2.setText("Workout 29 Week 1");
return rootView2;
case 3:
View rootView3 = inflater.inflate(R.layout.fragment_sub_page2, container, false);
TextView textView3 = (TextView) rootView3.findViewById(R.id.txtFrag3);
textView3.setText(getString(R.string.section_format, getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView3;
default: View rootView4 = inflater.inflate(R.layout.fragment_workout_days, container, false);
TextView textView4 = (TextView) rootView4.findViewById(R.id.txtFrag1);
textView4.setText(getString(R.string.section_format, getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView4;
}
}
}
/**
* A {@link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a PlaceholderFragment (defined as a static inner class below).
return PlaceholderFragment.newInstance(position + 1);
}
@Override
public int getCount() {
// Show 3 total pages.
return 3;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "Monday";
case 1:
return "Wednesday";
case 2:
return "Friday";
}
return null;
}
}
}
我认为这部分会像这样：
switch (getArguments().getInt(ARG_SECTION_NUMBER)) {
case 1:
View rootView = inflater.inflate(R.layout.fragment_workout_days, container, false);
Bundle extras = getArguments();
CustomObject objects = (CustomObject) extras.getSerializable("w29w1");
CustomListViewAdapter customListViewAdapter = new CustomListViewAdapter(this, objects);
但我在 (this, objects) 下遇到错误，提示“无法应用于 .placeholderfragment .custom 对象”“PlaceholderFragment 无法转换为上下文”
这是我放在 onChildClick 中的：
Bundle extras = new Bundle();
final ArrayList<CustomObject> objects = new ArrayList<CustomObject>();
objects.add(new CustomObject("Squat", "65%", "6", "150", false));
extras.putSerializable("w29w1", objects);
Intent intent = new Intent(getApplicationContext(), WorkoutDaysActivity.class);
intent.putExtra("args", extras);
startActivity(intent);
感谢您的帮助！如果您需要查看我的任何代码以更好地了解我正在尝试做什么，请告诉我！
【问题讨论】：
标签： android arraylist android-arrayadapter custom-adapter