Java tutorial
/* * Copyright (C) 2012 The Android Open Source Project * * 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 com.phonemetra.turbo.keyboard.latin.settings; import com.phonemetra.turbo.keyboard.latin.permissions.PermissionsManager; import com.phonemetra.turbo.keyboard.latin.utils.FragmentUtils; import android.app.ActionBar; import android.content.Intent; import android.os.Bundle; import android.preference.PreferenceActivity; import android.support.v4.app.ActivityCompat; import android.view.MenuItem; public final class SettingsActivity extends PreferenceActivity implements ActivityCompat.OnRequestPermissionsResultCallback { private static final String DEFAULT_FRAGMENT = SettingsFragment.class.getName(); public static final String EXTRA_SHOW_HOME_AS_UP = "show_home_as_up"; public static final String EXTRA_ENTRY_KEY = "entry"; public static final String EXTRA_ENTRY_VALUE_LONG_PRESS_COMMA = "long_press_comma"; public static final String EXTRA_ENTRY_VALUE_APP_ICON = "app_icon"; public static final String EXTRA_ENTRY_VALUE_NOTICE_DIALOG = "important_notice"; public static final String EXTRA_ENTRY_VALUE_SYSTEM_SETTINGS = "system_settings"; private boolean mShowHomeAsUp; @Override protected void onCreate(final Bundle savedState) { super.onCreate(savedState); final ActionBar actionBar = getActionBar(); final Intent intent = getIntent(); if (actionBar != null) { mShowHomeAsUp = intent.getBooleanExtra(EXTRA_SHOW_HOME_AS_UP, true); actionBar.setDisplayHomeAsUpEnabled(mShowHomeAsUp); actionBar.setHomeButtonEnabled(mShowHomeAsUp); } } @Override public boolean onOptionsItemSelected(final MenuItem item) { if (mShowHomeAsUp && item.getItemId() == android.R.id.home) { finish(); return true; } return super.onOptionsItemSelected(item); } @Override public Intent getIntent() { final Intent intent = super.getIntent(); final String fragment = intent.getStringExtra(EXTRA_SHOW_FRAGMENT); if (fragment == null) { intent.putExtra(EXTRA_SHOW_FRAGMENT, DEFAULT_FRAGMENT); } intent.putExtra(EXTRA_NO_HEADERS, true); return intent; } @Override public boolean isValidFragment(final String fragmentName) { return FragmentUtils.isValidFragment(fragmentName); } @Override public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) { PermissionsManager.get(this).onRequestPermissionsResult(requestCode, permissions, grantResults); } }