Java tutorial
package fr.free.nrw.commons.upload; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.net.Uri; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.v4.app.Fragment; import android.text.Editable; import android.text.TextWatcher; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup; import android.view.inputmethod.InputMethodManager; import android.widget.EditText; import android.widget.TextView; import fr.free.nrw.commons.Prefs; import fr.free.nrw.commons.R; import fr.free.nrw.commons.Utils; public class SingleUploadFragment extends Fragment { public interface OnUploadActionInitiated { void uploadActionInitiated(String title, String description); } private EditText titleEdit; private EditText descEdit; private TextView licenseSummaryView; private OnUploadActionInitiated uploadActionInitiatedHandler; @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.activity_share, menu); if (titleEdit != null) { menu.findItem(R.id.menu_upload_single).setEnabled(titleEdit.getText().length() != 0); } } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.menu_upload_single: uploadActionInitiatedHandler.uploadActionInitiated(titleEdit.getText().toString(), descEdit.getText().toString()); return true; } return super.onOptionsItemSelected(item); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_single_upload, null); titleEdit = (EditText) rootView.findViewById(R.id.titleEdit); descEdit = (EditText) rootView.findViewById(R.id.descEdit); licenseSummaryView = (TextView) rootView.findViewById(R.id.share_license_summary); TextWatcher uploadEnabler = new TextWatcher() { public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) { } public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) { } public void afterTextChanged(Editable editable) { if (getActivity() != null) { getActivity().invalidateOptionsMenu(); } } }; titleEdit.addTextChangedListener(uploadEnabler); SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity()); final String license = prefs.getString(Prefs.DEFAULT_LICENSE, Prefs.Licenses.CC_BY_SA); licenseSummaryView .setText(getString(R.string.share_license_summary, getString(Utils.licenseNameFor(license)))); // Open license page on touch licenseSummaryView.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View view, MotionEvent motionEvent) { if (motionEvent.getActionMasked() == MotionEvent.ACTION_DOWN) { Intent intent = new Intent(); intent.setAction(Intent.ACTION_VIEW); intent.setData(Uri.parse(Utils.licenseUrlFor(license))); startActivity(intent); return true; } else { return false; } } }); return rootView; } @Override public void onAttach(Activity activity) { super.onAttach(activity); uploadActionInitiatedHandler = (OnUploadActionInitiated) activity; } @Override public void onStop() { super.onStop(); // FIXME: Stops the keyboard from being shown 'stale' while moving out of this fragment into the next View target = getView().findFocus(); if (target != null) { InputMethodManager imm = (InputMethodManager) target.getContext() .getSystemService(Context.INPUT_METHOD_SERVICE); imm.hideSoftInputFromWindow(target.getWindowToken(), 0); } } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); } }