每次重新选择选项卡时,viewpager tablayout 中的片段都会重新设置
The fragments in the viewpager tablayout keep reinstanting every time I reselect the tab
我有三个选项卡,当用户转到第三个选项卡然后返回到第一个选项卡时 - 第一个选项卡中的内容不会重置并且表单会不断重新加载。
这是我的代码:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.scorespagemain);
viewPager = (ViewPager) findViewById(R.id.viewPager);
CAdapter cAdapter = new Adapter(getSupportFragmentManager(), ScoresPageMain.this);
viewPager.setAdapter(cAdapter);
tabLayout = (TabLayout) findViewById(R.id.tabsstuff);
tabLayout.setupWithViewPager(viewPager);
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
});
}
}
CAdapter
class:
public class CAdapter extends FragmentPagerAdapter{
String names[] = new String[] {"Top Teams", "Top Scores", "Top Players"};
Context context;
public CAdapter(FragmentManager fragmentManager, Context context){
super(fragmentManager);
this.context = context;
}
@Override
public Fragment getItem(int position) {
switch (position){
case 0:
return new TopTeams();
case 1:
return new TopScores();
case 2:
return new TopPlayers();
default:
return null;
}
}
@Override
public int getCount() {
return names.length;
}
@Override
public CharSequence getPageTitle(int position) {
return names[position];
}
}
尝试在您的代码中使用 setOffscreenPageLimit()
。
希望对您有所帮助。
我有三个选项卡,当用户转到第三个选项卡然后返回到第一个选项卡时 - 第一个选项卡中的内容不会重置并且表单会不断重新加载。
这是我的代码:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.scorespagemain);
viewPager = (ViewPager) findViewById(R.id.viewPager);
CAdapter cAdapter = new Adapter(getSupportFragmentManager(), ScoresPageMain.this);
viewPager.setAdapter(cAdapter);
tabLayout = (TabLayout) findViewById(R.id.tabsstuff);
tabLayout.setupWithViewPager(viewPager);
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
});
}
}
CAdapter
class:
public class CAdapter extends FragmentPagerAdapter{
String names[] = new String[] {"Top Teams", "Top Scores", "Top Players"};
Context context;
public CAdapter(FragmentManager fragmentManager, Context context){
super(fragmentManager);
this.context = context;
}
@Override
public Fragment getItem(int position) {
switch (position){
case 0:
return new TopTeams();
case 1:
return new TopScores();
case 2:
return new TopPlayers();
default:
return null;
}
}
@Override
public int getCount() {
return names.length;
}
@Override
public CharSequence getPageTitle(int position) {
return names[position];
}
}
尝试在您的代码中使用 setOffscreenPageLimit()
。
希望对您有所帮助。