Java tutorial
/* * Copyright (C) 2015-2016 Willi Ye <williye97@gmail.com> * * This file is part of Kernel Adiutor. * * Kernel Adiutor 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. * * Kernel Adiutor 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 Kernel Adiutor. If not, see <http://www.gnu.org/licenses/>. * */ package com.grarak.kerneladiutor.activities; import android.content.Intent; import android.graphics.Color; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.content.ContextCompat; import android.support.v4.graphics.drawable.DrawableCompat; import android.support.v7.widget.AppCompatEditText; import android.view.Menu; import android.view.MenuItem; import com.grarak.kerneladiutor.R; /** * Created by willi on 01.07.16. */ public class EditorActivity extends BaseActivity { public static final String TITLE_INTENT = "title"; public static final String TEXT_INTENT = "text"; private static final String EDITTEXT_INTENT = "edittext"; private AppCompatEditText mEditText; @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_editor); initToolBar(); String title = getIntent().getStringExtra(TITLE_INTENT); if (title != null) { getSupportActionBar().setTitle(title); } CharSequence text = getIntent().getCharSequenceExtra(TEXT_INTENT); mEditText = (AppCompatEditText) findViewById(R.id.edittext); if (text != null) { mEditText.append(text); } } @Override protected void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putCharSequence(EDITTEXT_INTENT, mEditText.getText()); } @Override public boolean onCreateOptionsMenu(Menu menu) { Drawable drawable = ContextCompat.getDrawable(this, R.drawable.ic_save); DrawableCompat.setTint(drawable, Color.WHITE); menu.add(0, Menu.FIRST, Menu.FIRST, getString(R.string.save)).setIcon(drawable) .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); return super.onCreateOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { Intent intent = new Intent(); intent.putExtra(TEXT_INTENT, mEditText.getText()); setResult(0, intent); finish(); return super.onOptionsItemSelected(item); } }