Java tutorial
/* * Copyright (C) 2012-2013 Dominik Schrmann <dominik@dominikschuermann.de> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package id.nci.stm_9; //import org.sufficientlysecure.keychain.Constants; import id.nci.stm_9.FileHelper; import id.nci.stm_9.Log; import id.nci.stm_9.R; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.os.Bundle; import android.os.Message; import android.os.Messenger; import android.os.RemoteException; import android.support.v4.app.DialogFragment; import android.view.LayoutInflater; import android.view.View; import android.widget.CheckBox; import android.widget.EditText; import android.widget.ImageButton; // TODO: return result from file manager activity to this dialog! not the activity! // do it like in ImportFileFragment! public class FileDialogFragment extends DialogFragment { private static final String ARG_MESSENGER = "messenger"; private static final String ARG_TITLE = "title"; private static final String ARG_MESSAGE = "message"; private static final String ARG_DEFAULT_FILE = "default_file"; private static final String ARG_CHECKBOX_TEXT = "checkbox_text"; private static final String ARG_REQUEST_CODE = "request_code"; public static final int MESSAGE_OKAY = 1; public static final String MESSAGE_DATA_FILENAME = "filename"; public static final String MESSAGE_DATA_CHECKED = "checked"; private Messenger mMessenger; /** * Creates new instance of this file dialog fragment */ public static FileDialogFragment newInstance(Messenger messenger, String title, String message, String defaultFile, String checkboxText, int requestCode) { FileDialogFragment frag = new FileDialogFragment(); Bundle args = new Bundle(); args.putParcelable(ARG_MESSENGER, messenger); args.putString(ARG_TITLE, title); args.putString(ARG_MESSAGE, message); args.putString(ARG_DEFAULT_FILE, defaultFile); args.putString(ARG_CHECKBOX_TEXT, checkboxText); args.putInt(ARG_REQUEST_CODE, requestCode); frag.setArguments(args); return frag; } /** * Creates dialog */ @Override public Dialog onCreateDialog(Bundle savedInstanceState) { final Activity activity = getActivity(); mMessenger = getArguments().getParcelable(ARG_MESSENGER); String title = getArguments().getString(ARG_TITLE); String message = getArguments().getString(ARG_MESSAGE); String defaultFile = getArguments().getString(ARG_DEFAULT_FILE); String checkboxText = getArguments().getString(ARG_CHECKBOX_TEXT); final int requestCode = getArguments().getInt(ARG_REQUEST_CODE); final EditText mFilename; final ImageButton mBrowse; final CheckBox mCheckBox; LayoutInflater inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); AlertDialog.Builder alert = new AlertDialog.Builder(activity); alert.setTitle(title); alert.setMessage(message); View view = inflater.inflate(R.layout.file_dialog, null); mFilename = (EditText) view.findViewById(R.id.input); mFilename.setText(defaultFile); mBrowse = (ImageButton) view.findViewById(R.id.btn_browse); mBrowse.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { // only .asc or .gpg files // setting it to text/plain prevents Cynaogenmod's file manager from selecting asc or gpg types! FileHelper.openFile(activity, mFilename.getText().toString(), "*/*", requestCode); } }); mCheckBox = (CheckBox) view.findViewById(R.id.checkbox); if (checkboxText == null) { mCheckBox.setEnabled(false); mCheckBox.setVisibility(View.GONE); } else { mCheckBox.setEnabled(true); mCheckBox.setVisibility(View.VISIBLE); mCheckBox.setText(checkboxText); } alert.setView(view); alert.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { dismiss(); boolean checked = false; if (mCheckBox.isEnabled()) { checked = mCheckBox.isChecked(); } // return resulting data back to activity Bundle data = new Bundle(); data.putString(MESSAGE_DATA_FILENAME, mFilename.getText().toString()); data.putBoolean(MESSAGE_DATA_CHECKED, checked); sendMessageToHandler(MESSAGE_OKAY, data); } }); alert.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { dismiss(); } }); return alert.create(); } /** * Updates filename in dialog, normally called in onActivityResult in activity using the * FileDialog * * @param messageId * @param progress * @param max */ public void setFilename(String filename) { AlertDialog dialog = (AlertDialog) getDialog(); EditText filenameEditText = (EditText) dialog.findViewById(R.id.input); if (filenameEditText != null) { filenameEditText.setText(filename); } } /** * Send message back to handler which is initialized in a activity * * @param what * Message integer you want to send */ private void sendMessageToHandler(Integer what, Bundle data) { Message msg = Message.obtain(); msg.what = what; if (data != null) { msg.setData(data); } try { mMessenger.send(msg); } catch (RemoteException e) { Log.w("Stm-9", "Exception sending message, Is handler present?", e); } catch (NullPointerException e) { Log.w("Stm-9", "Messenger is null!", e); } } }