Android 如何在片段中设置文本?
我正在尝试将我的应用程序转换为片段与活动,以便更好地遵循带有导航抽屉的android设计指南 我有一个带有按钮的片段,按下按钮时执行此代码以启动新片段:Android 如何在片段中设置文本?,android,android-fragments,android-xml,Android,Android Fragments,Android Xml,我正在尝试将我的应用程序转换为片段与活动,以便更好地遵循带有导航抽屉的android设计指南 我有一个带有按钮的片段,按下按钮时执行此代码以启动新片段: FragmentManager man=getFragmentManager(); FragmentTransaction tran=man.beginTransaction(); Fragment_one=new Fragment1(); tran.add(R.id.main, Fragment
FragmentManager man=getFragmentManager();
FragmentTransaction tran=man.beginTransaction();
Fragment_one=new Fragment1();
tran.add(R.id.main, Fragment_one);//tran.
tran.addToBackStack(null);
tran.commit();
它试图加载的片段如下所示:
public class BPTopBeers extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity());
String userName = prefs.getString("userName", null);
String userID = prefs.getString("userID", null);
String title = "Top Beers on Beer Portfolio";
TextView topTitle = (TextView) findViewById(R.id.topTasteTitle);
topTitle.setText(title);
//construct url
String url = "myURL";
Log.d("myUrl", url);
//async task goes here
new GetYourTopTasteBeers(this).execute(url);
// Inflate the layout for this fragment
//todo: change to discover layout
return inflater.inflate(R.layout.toptaste_layout, container, false);
}
}
我在上面代码的这一行上得到一个错误:
TextView topTitle = (TextView) findViewById(R.id.topTasteTitle);
无法解析方法findviewbyid是错误尝试此操作,您需要获取根视图并使用根视图使用findviewbyid
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.toptaste_layout, container, false);
// rest of the code
TextView topTitle = (TextView) v.findViewById(R.id.topTasteTitle);
return v;
}
试试这个,您需要通过使用根视图获取根视图并使用findViewById
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.toptaste_layout, container, false);
// rest of the code
TextView topTitle = (TextView) v.findViewById(R.id.topTasteTitle);
return v;
}
试试这个,您需要通过使用根视图获取根视图并使用findViewById
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.toptaste_layout, container, false);
// rest of the code
TextView topTitle = (TextView) v.findViewById(R.id.topTasteTitle);
return v;
}
试试这个,您需要通过使用根视图获取根视图并使用findViewById
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.toptaste_layout, container, false);
// rest of the code
TextView topTitle = (TextView) v.findViewById(R.id.topTasteTitle);
return v;
}
将onCreateView()更改为-
将onCreateView()更改为-
将onCreateView()更改为-
将onCreateView()更改为-
这个
应该是getActivity()
这个应该是getActivity()
这个应该是getActivity()
这个应该是getActivity()