我的页面上有一个按钮和下面的标签。我想要单击按钮后打开的选项卡反映可变数据的变化。我无法理解它。
以下是我的代码: -
public class Level2MainActivity_grid1 extends AppCompatActivity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.level2mainlayout_place1);
// I am putting a viewpager with fragments into them and put tabs
ViewPager viewPager = (ViewPager) findViewById(R.id.viewPager);
PagerAdapter pagerAdapter = new PagerAdapter(getSupportFragmentManager(), Titles, Numboftabs);
viewPager.setAdapter(pagerAdapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabLayout);
tabLayout.setupWithViewPager(viewPager);
Button buttonId = (Button) findViewById(R.id.planmytraveludupitown);
buttonId.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//I want to save some things and also refresh the current tab
}
});
}
}
答案 0 :(得分:0)
下面的行也可以,但是如果它不起作用,那么你也可以尝试另一个选项
pagerAdapter.notifydatasetChanged();
尝试以下代码: -
buttonId.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
pagerAdapter = new PagerAdapter(getSupportFragmentManager(), Titles, Numboftabs);
viewPager.setAdapter(pagerAdapter);
tabLayout.setupWithViewPager(viewPager);
}
});
注意: - 当您获得新数据时,重新定义您的标题和Numoftabs
答案 1 :(得分:0)
您无法通知适配器中的数据集吗?
pagerAdapter.notifyDatasetChanged()