Java tutorial
/* * Copyright 2015 Synced Synapse. All rights reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.xbmc.kore.ui.generic; import android.app.Activity; import android.app.Dialog; import android.content.DialogInterface; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.app.DialogFragment; import android.support.v7.app.AlertDialog; import android.view.KeyEvent; import android.view.View; import android.view.WindowManager; import android.view.inputmethod.EditorInfo; import android.widget.CheckBox; import android.widget.EditText; import android.widget.TextView; import org.xbmc.kore.R; /** * Dialog that allows the user to send text */ public class SendTextDialogFragment extends DialogFragment { private static final String TITLE_KEY = "TITLE"; // The listener activity we will call when the user finishes the selection private SendTextDialogListener mListener; /** * Interface to pass events back to the calling activity * The calling activity must implement this interface */ public interface SendTextDialogListener { public void onSendTextFinished(String text, boolean done); public void onSendTextCancel(); } /** * UI views */ private EditText textToSend; private CheckBox finishAfterSend; /** * Create a new instance of the dialog, providing arguments. * @param title * Title of the dialog * @return * New dialog */ public static SendTextDialogFragment newInstance(String title) { SendTextDialogFragment dialog = new SendTextDialogFragment(); Bundle args = new Bundle(); args.putString(TITLE_KEY, title); dialog.setArguments(args); return dialog; } /** * Override the attach to the activity to guarantee that the activity implements required interface * * @param activity * Context activity that implements listener interface */ @Override public void onAttach(Activity activity) { super.onAttach(activity); try { mListener = (SendTextDialogListener) activity; } catch (ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement SendTextDialogListener"); } } /** * Create the dialog * @param savedInstanceState Saved state * @return Created dialog */ @NonNull @Override @SuppressWarnings("InflateParams") public Dialog onCreateDialog(Bundle savedInstanceState) { super.onCreate(savedInstanceState); AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); final String title = getArguments().getString(TITLE_KEY, getString(R.string.send_text)); View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_send_text, null); textToSend = (EditText) dialogView.findViewById(R.id.text_to_send); finishAfterSend = (CheckBox) dialogView.findViewById(R.id.send_text_done); builder.setTitle(title).setView(dialogView) .setPositiveButton(R.string.send, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { mListener.onSendTextFinished(textToSend.getText().toString(), finishAfterSend.isChecked()); } }).setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { mListener.onSendTextCancel(); } }); final Dialog dialog = builder.create(); textToSend.setOnFocusChangeListener(new View.OnFocusChangeListener() { @Override public void onFocusChange(View v, boolean hasFocus) { if (hasFocus) { dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE); } } }); textToSend.setOnEditorActionListener(new TextView.OnEditorActionListener() { @Override public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { if (actionId == EditorInfo.IME_ACTION_SEND) { onSendTextFinished(); } // handles enter key on external keyboard, issue #99 else if (actionId == EditorInfo.IME_ACTION_UNSPECIFIED && (event != null && event.getAction() == KeyEvent.ACTION_DOWN && event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) { onSendTextFinished(); } dialog.dismiss(); return false; } private void onSendTextFinished() { mListener.onSendTextFinished(textToSend.getText().toString(), finishAfterSend.isChecked()); } }); return dialog; } }