我在哪里可以定义片段中的textViews以多次更改其内容？

Question

所以我有这个片段，其中包含多个TextView，当用户点击“下一个”按钮或“上一个”按钮时，它会被更改。

的onCreateView方法中我有：

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 

    View inflatedView = inflater.inflate(R.layout.fragment_time_table, container, false); 


    update(inflatedView,worker.current.getTarih(),worker.current.getHicri(),worker.current.getGün(),worker.current.getImsak(),worker.current.getSabah(),worker.current.getGüneş(),worker.current.getÖğle(),worker.current.getIkindi(),worker.current.getAkşam(),worker.current.getYatsı()); 


    // Inflate the layout for this fragment 
    return inflatedView; 


} 

上的更新方法

我

public void update(View dimension,String tarih, String hicri, String gun, String imsak, String sabah, String gunes, String ogle, String ikindi, String aksam, String yatsi){ 

    TextView gunView = (TextView) dimension.findViewById(R.id.gun); 
    TextView imsakView = (TextView) dimension.findViewById(R.id.imsak); 
    TextView sabahView = (TextView) dimension.findViewById(R.id.sabah); 
    TextView gunesView = (TextView) dimension.findViewById(R.id.gunes); 
    TextView ogleView = (TextView) dimension.findViewById(R.id.ogle); 
    TextView ikindiView = (TextView) dimension.findViewById(R.id.ikindi); 
    TextView aksamView = (TextView) dimension.findViewById(R.id.aksam); 
    TextView yatsiView = (TextView) dimension.findViewById(R.id.yatsi); 


    gunView.setText(gun); 
    imsakView.setText(imsak); 
    sabahView.setText(sabah); 
    gunesView.setText(gunes); 
    ogleView.setText(ogle); 
    ikindiView.setText(ikindi); 
    aksamView.setText(aksam); 
    yatsiView.setText(yatsi); 
} 

更新方法被调用用户的点击。对我来说，每次调用update()时都会重新定义textview。 我尝试在onCreate方法上定义TextView，但我一直在获取NPE。

Answer 1

你必须改变这样的方式，

通过这样做，你的TextView不会被重新定义每次

变化：

public class ViewFragment extends Fragment { 

    public TextView gunView, imsakView, sabahView, gunesView, ogleView, ikindiView, aksamView, yatsiView; 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     View inflatedView = inflater.inflate(R.layout.content_main, container, false); 
     gunView = (TextView) inflatedView.findViewById(R.id.gun); 
     imsakView = (TextView) inflatedView.findViewById(R.id.imsak); 
     sabahView = (TextView) inflatedView.findViewById(R.id.sabah); 
     gunesView = (TextView) inflatedView.findViewById(R.id.gunes); 
     ogleView = (TextView) inflatedView.findViewById(R.id.ogle); 
     ikindiView = (TextView) inflatedView.findViewById(R.id.ikindi); 
     aksamView = (TextView) inflatedView.findViewById(R.id.aksam); 
     yatsiView = (TextView) inflatedView.findViewById(R.id.yatsi); 
     update("1", "2", "3", "4", "5", "5", "6", "7", "8", "9"); //remove view from here 
     // Inflate the layout for this fragment 
     return inflatedView; 
    } 

    public void update(String tarih, String hicri, String gun, String imsak, String sabah, String gunes, String ogle, String ikindi, String aksam, String yatsi) { 
     gunView.setText(gun); 
     imsakView.setText(imsak); 
     sabahView.setText(sabah); 
     gunesView.setText(gunes); 
     ogleView.setText(ogle); 
     ikindiView.setText(ikindi); 
     aksamView.setText(aksam); 
     yatsiView.setText(yatsi); 
    } 
} 

Answer 2

这里是我的想法，希望它作品，我没有尝试过自己。如果你想定义TextView而不是重复定义它，为什么不用Gradle选项（compile'c​​om.jakewharton：butterknife：7.0.1'）编译后使用ButterKnife在你的片段类内部完成。

public class MyFragment extends Fragment { 

     @Bind(R.id.textView)TextView tv; 
     @Bind(R.id.textView)TextView tv2, tv3 etc; 
    ... 
    ... 
     @Override 
     OnActivityCreated(Bundle savedInstance){ 
      ButterKnife.Bind(getActivity()); 
    } 
     @Override 
     public void onActivityCreated(Bundle savedInstanceState) { 
      super.onActivityCreated(savedInstanceState); 

      tv.setText(String.format(Locale.US, "ABCD %d", i)); 
    }