[英]Android Recycler View in tab layout
我正在嘗試設置一個包含3個標簽的標簽布局,每個標簽中都有一個回收站視圖。 我發現了這個問題: 如何使用TabLayout在片段中使用CardView行實現RecyclerView,這與我想要的類似,我試圖進行設置,然后在完成此工作后設置數據檢索。
我現在遇到的問題是設置PagerAdapter。 這是我的代碼:
public class WorkoutDaysActivity extends BaseActivity{
ListView mListView = new ListView(this);
ArrayList<CustomObject> w29w1m;
CustomListViewAdapter mCustomListViewAdapter;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.workout_days);
mToolBar = activateToolbar();
setUpNavigationDrawer();
// Get the ViewPager and set it's PagerAdapter so that it can display items
ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);
PagerAdapter pagerAdapter =
new PagerAdapter(getSupportFragmentManager(), WorkoutDaysActivity.this)
viewPager.setAdapter(pagerAdapter);
// Give the TabLayout the ViewPager
TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
tabLayout.setupWithViewPager(viewPager);
// Iterate over all tabs and set the custom view
for (int i = 0; i < tabLayout.getTabCount(); i++) {
TabLayout.Tab tab = tabLayout.getTabAt(i);
tab.setCustomView(pagerAdapter.getTabView(i));
}
}
@Override
public void onResume() {
super.onResume();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
class PagerAdapter extends FragmentPagerAdapter {
String tabTitles[] = new String[] { "Tab One", "Tab Two", "Tab Three" };
Context context;
public PagerAdapter(FragmentPagerAdapter fm, Context context) {
super(fm);
this.context = context;
}
@Override
public int getCount() {
return tabTitles.length;
}
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new WorkoutDetailFragment();
case 1:
return new WorkoutDetailFragment();
case 2:
return new WorkoutDetailFragment();
}
return null;
}
@Override
public CharSequence getPageTitle(int position) {
// Generate title based on item position
return tabTitles[position];
}
public View getTabView(int position) {
View tab = LayoutInflater.from(WorkoutDaysActivity.this).inflate(R.layout.custom_tab, null);
TextView tv = (TextView) tab.findViewById(R.id.custom_text);
tv.setText(tabTitles[position]);
return tab;
}
}}
我遇到錯誤的第一點是
PagerAdapter pagerAdapter =
new PagerAdapter(getSupportFragmentManager(), WorkoutDaysActivity.this)
viewPager.setAdapter(pagerAdapter);
錯誤是:
PagerAdapter (android.support.v4.app.FragmentPagerAdapter, Context) in PagerAdapter cannot be applied to: (android.support.v4.app.FragmentManager, WorkoutDaysActivity.this)
android.support.v4.app.FragmentManager是帶紅色下划線的部分。 第二個錯誤是在這部分中:
class PagerAdapter extends FragmentPagerAdapter {
String tabTitles[] = new String[] { "Tab One", "Tab Two", "Tab Three" };
Context context;
public PagerAdapter(FragmentPagerAdapter fm, Context context) {
super(fm);
this.context = context;
}
錯誤在super(fm)中; 部分,它指出:
FragmentPagerAdapter (android.support.v4.app.FragmentManager) in FragmentPagerAdapter cannot be applied to: android.support.v4.app.FragmentPagerAdapter
我覺得導入錯誤的東西會是一個簡單的錯誤,但是我修復它的嘗試失敗了。 任何幫助,不勝感激,謝謝!
您的PagerAdapter類擴展了FragmentPagerAdapter。 然后,其構造函數將使用FragmentPagerAdapter進行初始化。 那么要初始化FragmentPagerAdapter,您已經需要FragmentPagerAdapter嗎?
我認為該參數應該是FragmentManager。
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