我必须实现一个应用程序，用户可以在该应用程序中点击5页之间的bottom_bar（虽然谷歌不推荐在最近的文档中，但客户总是正确的）。 所以我用自动工具android学习创建了一个滑动活动。 问题：如何在单击按钮后开始转换，并更改片段??
以下是代码（使用滑动更改活动时）
public class Home extends ActionBarActivity {
SectionsPagerAdapter mSectionsPagerAdapter;
ImageView home, ospitalita,multimedia,territoro, prodotti;
ViewPager mViewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
home = (ImageView) findViewById(R.id.ibHome);
ospitalita = (ImageView) findViewById(R.id.ibOspitalita);
multimedia = (ImageView) findViewById(R.id.ibMultimedia);
territoro = (ImageView) findViewById(R.id.ibTerritorio);
prodotti = (ImageView) findViewById(R.id.ibProdotti);
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
View.OnClickListener gestore = new View.OnClickListener() {
@Override
public void onClick(View v) {
//this is the bottom bar, on click, change icon color
switch (v.getId()){
case R.id.ibHome:
changeBottomIcon("home");
mSectionsPagerAdapter.getItem(0); //do nothing
break;
case R.id.ibOspitalita:
changeBottomIcon("ospitalita");
mSectionsPagerAdapter.getItem(1);
break;
case R.id.ibMultimedia:
changeBottomIcon("multimedia");
mSectionsPagerAdapter.getItem(2);
break;
case R.id.ibTerritorio:
changeBottomIcon("territorio");
mSectionsPagerAdapter.getItem(3);
break;
case R.id.ibProdotti:
changeBottomIcon("prodotti");
mSectionsPagerAdapter.getItem(4);
break;
}
}
};
home.setOnClickListener(gestore);
ospitalita.setOnClickListener(gestore);
multimedia.setOnClickListener(gestore);
territoro.setOnClickListener(gestore);
prodotti.setOnClickListener(gestore);
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
}
/**
* 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.
switch (position) {
// change bottom doesn't work here
case 0:
// changeBottomIcon("home");
return new fragment_home();
case 1:
//changeBottomIcon("territorio");
return new fragment_territorio();
case 2:
//changeBottomIcon("ospitalita");
return new fragment_ospitalita();
case 3:
//changeBottomIcon("multimedia");
return new fragment_multimedia();
case 4:
//changeBottomIcon("prodotti");
return new fragment_prodotti();
}
return null;
}
@Override
public int getCount() {
//num pagine
return 5;
}
@Override
public CharSequence getPageTitle(int position) {
//Not visible, no nav bar
Locale l = Locale.getDefault();
switch (position) {
case 0:
return getString(R.string.home);
case 1:
return getString(R.string.territorio);
case 2:
return getString(R.string.ospitalita);
case 3:
return getString(R.string.multimedia);
case 4:
return getString(R.string.prodotti);
}
return null;
}
}
//simple method to change icon color
public void changeBottomIcon(String tipo){
.
.
.
//lo ometto perchè inutile
}
}