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我有一個選項卡片段應用程序。問題是當我進入我的應用程序內部的一個活動,並希望返回到我的標籤佈局它返回沒有選項卡行佈局。我只能看到特定的片段頁面,而沒有上面的行(選項卡的行),這使我能夠在選項卡之間導航。 你知道我能做些什麼來解決它嗎?我怎樣才能看到標籤的行呢? 感謝您的幫助,使用選項卡布局從活動中啓動選項卡片段
這是我希望看到的活動後面的第一個標籤:
public class Tab1MyProfile extends Fragment {
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.tab1_my_profile, container, false);
return rootView;
}
}
這是包含代碼回到該片段選項卡活動:
public class GameLive extends AppCompatActivity implements RecognitionListener {
private Intent intent;
private Button mStopButton;
public void stopGame (View view) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Are you sure you want to finish the game?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
Tab1MyProfile fragment = new Tab1MyProfile();
fragmentTransaction.replace(android.R.id.content, fragment);
fragmentTransaction.commit();
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.show();
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.game_live);
mStopButton = (Button) findViewById(R.id.btnEndGame);
mStopButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
stopGame(view);
}
});
}
}
這是一個包含所有選項卡的片段的活動:
public class StartActivity extends AppCompatActivity {
private SectionsPagerAdapter mSectionsPagerAdapter;
private ViewPager mViewPager;
@TargetApi(Build.VERSION_CODES.M)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_start);
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_start, 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 {@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) {
switch (position) {
case 0:
Tab1MyProfile tab1=new Tab1MyProfile();
return tab1;
case 1:
Tab2StartGame tab2=new Tab2StartGame();
return tab2;
case 2:
Tab3StatsArea tab3=new Tab3StatsArea();
return tab3;
case 3:
Tab4Settings tab4=new Tab4Settings();
return tab4;
}
return null;
}
@Override
public int getCount() {
// Show 4 total pages.
return 4;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "My profile";
case 1:
return "Start Game";
case 2:
return "Stats Area";
case 3:
return "Settings";
}
return null;
}
}
}
再次感謝!
這是一個好主意,但是我想要關閉的活動和包含缺少導航欄的片段之間存在活動。您是否知道如何一次關閉兩個活動? –
您確定要一次關閉兩項活動嗎?如果您從用戶的角度思考,這可能會導致混淆。如果你真的想操縱活動堆棧,有辦法。例如,查看Intent標誌。 –
謝謝你的幫助!我決定採取你的建議,關閉只有一個活動:) –