Question

我想在片段textview中显示列表项名称。

我该怎么做？

这是我的代码：

Title.java

 public class Title extends AppCompatActivity implements          OnVersionNameSelectionChangeListener{
private static final String TAG = Title.class.getSimpleName();

String str, arr[];
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);

setContentView(R.layout.activity_title);
str = getIntent().getExtras().getString("string","defaultValue");
//Toast.makeText(getApplicationContext(), str , Toast.LENGTH_SHORT).show();

// Check whether the Activity is using the layout verison with the fragment_container
// FrameLayout and if so we must add the first fragment

if (findViewById(R.id.fragment_container) != null){

    // However if we are being restored from a previous state, then we don't
    // need to do anything and should return or we could end up with overlapping Fragments
    if (savedInstanceState != null){
        return;
    }

    // Create an Instance of Fragment
    VersionsFragment versionsFragment = new VersionsFragment();
    Bundle bundle = new Bundle();
    bundle.putString("key", str);
    //versionsFragment.setArguments(getIntent().getExtras());
    versionsFragment.setArguments(bundle);
                                                                                    getFragmentManager().beginTransaction().add(R.id.fragment_container, versionsFragment).commit();
}
}

 @Override
public void OnSelectionChanged(int versionNameIndex, String[] answer) {
DescriptionFragment descriptionFragment = (DescriptionFragment) getFragmentManager()
        .findFragmentById(R.id.version_description);

if (descriptionFragment != null){
    // If description is available, we are in two pane layout
    // so we call the method in DescriptionFragment to update its content
    // Bundle args = new Bundle();
    // args.putString("key", str);
    // args.putStringArray("answer", answer );
    //args.putInt(DescriptionFragment.KEY_POSITION,versionNameIndex);
    //descriptionFragment.setArguments(args);
    setArray(answer);
    //setStr(str);
    descriptionFragment.setDescription(versionNameIndex);
} else {
    DescriptionFragment newDescriptionFragment = new DescriptionFragment();
    Bundle args = new Bundle();
    //args.putString("key", str);
    //args.putStringArray("answer", answer );
    setArray(answer);
    args.putInt(DescriptionFragment.KEY_POSITION,versionNameIndex);

    newDescriptionFragment.setArguments(args);
    FragmentTransaction fragmentTransaction = getFragmentManager().beginTransaction();

    // Replace whatever is in the fragment_container view with this fragment,
    // and add the transaction to the backStack so the User can navigate back
    fragmentTransaction.replace(R.id.fragment_container,newDescriptionFragment);
    fragmentTransaction.addToBackStack(null);
    fragmentTransaction.commit();
}
    }
   public String getStr(){
   return str;
    }

    public void setArray(String[] s)
    {
       arr = s;
//Log.d(TAG, "setArray: " + arr[0]);
    }

   public String[] getArray(){
   return arr;
   }
   }

DescriptionFragment.java

public class DescriptionFragment extends Fragment {
private static final String TAG = DescriptionFragment.class.getSimpleName();
final static String KEY_POSITION = "position";
int mCurrentPosition = -1;
String[] mVersionTitle;
String[] mVersionDescriptions;
TextView mVersionTitleTextView;
TextView mVersionDescriptionTextView;

public DescriptionFragment() {

}

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    Title t = (Title) getActivity();
    mVersionDescriptions = t.getArray();
    //Log.d(TAG , "onActivityCreated: " + mVersionDescriptions.length);
}


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

    // If the Activity is recreated, the savedInstanceStare Bundle isn't empty
    // we restore the previous version name selection set by the Bundle.
    // This is necessary when in two pane layout

    String strtext = getArguments().getString("title");

    if (savedInstanceState != null) {
        mCurrentPosition = savedInstanceState.getInt(KEY_POSITION);
        //Log.d(TAG, "Show last click position: "+ KEY_POSITION);
    }
            View view = inflater.inflate(R.layout.fragment_description, container, false);
            mVersionTitleTextView = (TextView) view.findViewById(R.id.textView_Title);
            mVersionTitleTextView.setText(strtext);
            mVersionDescriptionTextView = (TextView) view.findViewById(R.id.version_description);
            return view;
}


@Override
public void onStart() {
    super.onStart();
    Bundle args = new Bundle();
    args = getArguments();


    if (args != null) {
        // Set description based on argument passed in
      //  setTitle(args.getInt(KEY_POSITION));
        setDescription(args.getInt(KEY_POSITION));

    } else if (mCurrentPosition != -1) {
        // Set description based on savedInstanceState defined during onCreateView()
       // setTitle(mCurrentPosition);
        setDescription(mCurrentPosition);
    }
}

public void setDescription(int descriptionIndex) {
    Title t = (Title) getActivity();
   // mVersionTitle = t.getArray();
    mVersionDescriptions = t.getArray();
    //mVersionTitleTextView.setText(mVersionTitle[descriptionIndex]);
    mVersionDescriptionTextView.setText(mVersionDescriptions[descriptionIndex]);
    mCurrentPosition = descriptionIndex;
    Log.d(TAG, "onSaveInstanceState: " + mCurrentPosition);
}

@Override
public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);

    // Save the current description selection in case we need to recreate the fragment
    outState.putInt(KEY_POSITION, mCurrentPosition);
    //Log.d(TAG, "onSaveInstanceState: " + mCurrentPosition);
      }
    }

versionFragment.java

  public class VersionsFragment extends ListFragment {
  private static final String TAG = VersionsFragment.class.getSimpleName();
  String[] title = new String[0];
  String[] description = new String[0];
  String table=new String();
  public VersionsFragment() {
  }


 @Override
 public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

String myValue = this.getArguments().getString("key");

Title q = (Title) getActivity();
table = q.getStr();
//Log.d(TAG, "onActivityCreated: " + table);

if(table.equals("Paragraph Writing"))
    table="paragraph";
else if(table.equals("Story Writing"))
    table="story";
table = table.toLowerCase();
new MyTask().execute();
}

class MyTask extends AsyncTask<String, Integer, String[]> {

@Override
protected String[] doInBackground(String... params) {
    String[] versionName = new String[0];
    ArrayList<String> scripts = new ArrayList<String>();
    ArrayList<String> scripts2 = new ArrayList<String>();
    try {
        //Log.d(VersionsFragment.class.getSimpleName(),"http://192.168.1.105/android/phpcall.php?table="+table );
        URL url = new URL("http://192.168.1.6/ps/phpcall.php?table="+table);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        String strJson = "";
        String line;
        BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        while ((line = br.readLine()) != null) {
            strJson += line;
        }
        //Log.d(VersionsFragment.class.getSimpleName(), "JSON string =" + strJson);
        JSONArray jArray = new JSONArray(strJson);
        //JSONObject jsonObj = new JSONObject(strJson);
        // Getting JSON Array node
        //JSONArray jArray = jsonObj.getJSONArray(strJson);

        for (int i = 0; i < jArray.length(); i++) {

            JSONObject jObject = jArray.getJSONObject(i);

            String name = jObject.getInt("id") + ". " + jObject.getString("title");
            scripts.add(name);

            Bundle bundle = new Bundle();
            bundle.putString("title", name);
            // set Fragmentclass Arguments
            DescriptionFragment fragobj = new DescriptionFragment();
            fragobj.setArguments(bundle);

            String name2 = jObject.getString("description");
            scripts2.add(name2);
        }
        versionName = scripts.toArray(new String[scripts.size()]);
       // title = scripts.toArray(new String[scripts.size()]);
        description = scripts2.toArray(new String[scripts.size()]);

    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (JSONException e) {
        e.printStackTrace();
    }
    return versionName;
}

protected void onPostExecute(String[] result){
    //for(int i=0;i<result.length;i++)
        //Log.d(VersionsFragment.class.getSimpleName(), result[i]);
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, result);
    setListAdapter(adapter);
}
}

@Override
public void onListItemClick(ListView l, View v, int position, long id) {
OnVersionNameSelectionChangeListener listener = (OnVersionNameSelectionChangeListener) getActivity();
listener.OnSelectionChanged(position,description);
    }
}

如何在片段textview中显示列表项名称

0 个答案: