Java tutorial
/* * Copyright 2017 https://github.com/seht * * 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 net.hyx.app.volumenotification.activity; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.support.v4.app.NavUtils; import android.support.v7.app.AppCompatActivity; import android.text.Editable; import android.text.TextWatcher; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.CompoundButton; import android.widget.EditText; import android.widget.LinearLayout; import android.widget.Spinner; import android.widget.Switch; import net.hyx.app.volumenotification.R; import net.hyx.app.volumenotification.adapter.IconSpinnerAdapter; import net.hyx.app.volumenotification.adapter.ListViewAdapter; import net.hyx.app.volumenotification.entity.VolumeControl; import net.hyx.app.volumenotification.model.SettingsModel; import net.hyx.app.volumenotification.model.VolumeControlModel; import java.io.Serializable; public class ItemViewActivity extends AppCompatActivity { private ButtonsItemFragment frag; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); VolumeControl item = (VolumeControl) getIntent().getExtras().getSerializable(ListViewAdapter.EXTRA_ITEM); if (item == null) { finish(); return; } SettingsModel settings = new SettingsModel(this); frag = ButtonsItemFragment.newInstance(item); setTheme(settings.getAppTheme()); setTitle(item.label); setContentView(R.layout.activity_frame_layout); getSupportFragmentManager().beginTransaction().replace(R.id.content, frag).commit(); if (getSupportActionBar() != null) { getSupportActionBar().setDisplayHomeAsUpEnabled(true); } } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu_buttons_item, menu); LinearLayout actionLayout = (LinearLayout) menu.findItem(R.id.item_btn_checked_layout).getActionView(); Switch statusInput = (Switch) actionLayout.findViewById(R.id.menu_item_switch); statusInput.setChecked((frag.item.status == 1)); statusInput.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { frag.item.status = (isChecked) ? 1 : 0; frag.model.saveItem(frag.item); } }); return super.onCreateOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: frag.model.saveItem(frag.item); NavUtils.navigateUpFromSameTask(this); break; } return super.onOptionsItemSelected(item); } public static class ButtonsItemFragment extends Fragment { private static final String ARG_ITEM = "item"; private VolumeControl item; private VolumeControlModel model; public static ButtonsItemFragment newInstance(Serializable item) { ButtonsItemFragment frag = new ButtonsItemFragment(); Bundle args = new Bundle(); args.putSerializable(ARG_ITEM, item); frag.setArguments(args); return frag; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); model = new VolumeControlModel(getActivity()); item = (VolumeControl) getArguments().getSerializable(ARG_ITEM); item = model.parseItem(item); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.fragment_item_view, container, false); } @Override public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); EditText labelInput = (EditText) view.findViewById(R.id.pref_label_input); Spinner iconInput = (Spinner) view.findViewById(R.id.pref_icon_input); iconInput.setAdapter( new IconSpinnerAdapter(getContext(), R.array.pref_icon_entries, model.getIconEntries())); labelInput.setText(item.label); labelInput.setHint(model.getDefaultLabel(item.id)); iconInput.setSelection(item.icon); labelInput.addTextChangedListener(new TextWatcher() { @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { } @Override public void afterTextChanged(Editable s) { item.label = s.toString(); model.saveItem(item); } }); iconInput.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { item.icon = position; model.saveItem(item); } @Override public void onNothingSelected(AdapterView<?> parent) { } }); } } }