Java tutorial
/* * Copyright (C) 2015 Antonio Leiva * * 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.hfs.materialhome; import android.content.Intent; import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.support.design.widget.NavigationView; import android.support.design.widget.Snackbar; import android.support.v4.view.GravityCompat; import android.support.v4.widget.DrawerLayout; import android.support.v4.widget.SwipeRefreshLayout; import android.support.v7.app.ActionBar; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.GridLayoutManager; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.Toolbar; import android.util.Log; import android.view.KeyEvent; import android.view.MenuItem; import android.view.View; import android.widget.ImageView; import android.widget.Toast; import com.hfs.materialhome.listener.OnRecyclerViewScrollListener; import com.hfs.materialhome.picasso.CircleTransform; import com.lzp.floatingactionbuttonplus.FabTagLayout; import com.lzp.floatingactionbuttonplus.FloatingActionButtonPlus; import com.squareup.picasso.Picasso; import java.util.ArrayList; import java.util.List; import butterknife.ButterKnife; import butterknife.InjectView; public class MainActivity extends AppCompatActivity implements RecyclerViewAdapter.OnItemClickListener { public static final String AVATAR_URL = "http://lorempixel.com/200/200/people/1/"; private List<ViewModel> items = new ArrayList<>(); private ArrayList<ViewModel> arrayList; // static { // for (int i = 1; i <= 10; i++) { // items.add(new ViewModel("Item " + i, "http://lorempixel.com/500/500/animals/" + i)); // } // } @InjectView(R.id.swipe_refresh) SwipeRefreshLayout mSwipeRefresh; private DrawerLayout drawerLayout; private View content; private RecyclerView recyclerView; private NavigationView navigationView; private FloatingActionButtonPlus mActionButtonPlus; private ImageView mAvatar; private long mExitTime; private Handler handler = new Handler(); private boolean isLoading; private RecyclerViewAdapter mAdapter; private GridLayoutManager mLayoutManager; private Handler mHandler = new Handler() { @Override public void handleMessage(Message msg) { super.handleMessage(msg); List<ViewModel> list = (List<ViewModel>) msg.obj; mAdapter.getList().addAll(list); mAdapter.notifyDataSetChanged(); mAdapter.setFooterView(0); } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ButterKnife.inject(this); initData(); initRecyclerView(); initView(); initFab(); initToolbar(); setupDrawerLayout(); content = findViewById(R.id.content); mAvatar = (ImageView) navigationView.getHeaderView(0).findViewById(R.id.avatar); Picasso.with(this).load(AVATAR_URL).transform(new CircleTransform()).into(mAvatar); mAvatar.setOnClickListener(mOnClickListener); if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) { setRecyclerAdapter(recyclerView); } } private void initData() { handler.postDelayed(new Runnable() { @Override public void run() { getData(); } }, 1500); } private void initView() { mSwipeRefresh.setColorSchemeResources(android.R.color.holo_red_light, android.R.color.holo_blue_bright, android.R.color.holo_orange_light); mSwipeRefresh.post(new Runnable() { @Override public void run() { mSwipeRefresh.setRefreshing(true); } }); mSwipeRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() { @Override public void onRefresh() { handler.postDelayed(new Runnable() { @Override public void run() { items.clear(); getNewData(); } }, 2000); } }); } private void getNewData() { for (int i = 6; i <= 10; i++) { items.add(new ViewModel("Item " + i, "http://lorempixel.com/500/500/animals/" + i)); } mAdapter.notifyDataSetChanged(); mSwipeRefresh.setRefreshing(false); } private void getData() { for (int i = 1; i <= 5; i++) { items.add(new ViewModel("Item " + i, "http://lorempixel.com/500/500/animals/" + i)); } mAdapter.notifyDataSetChanged(); mSwipeRefresh.setRefreshing(false); } /** * ? */ View.OnClickListener mOnClickListener = new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(MainActivity.this, LoginActivity.class); startActivity(intent); } }; @Override public void onEnterAnimationComplete() { super.onEnterAnimationComplete(); setRecyclerAdapter(recyclerView); recyclerView.scheduleLayoutAnimation(); } private void initRecyclerView() { recyclerView = (RecyclerView) findViewById(R.id.recycler); mLayoutManager = new GridLayoutManager(this, 2); recyclerView.setLayoutManager(mLayoutManager); recyclerView.addOnScrollListener(new OnRecyclerViewScrollListener<ViewModel>() { @Override public void onStart() { mAdapter.setFooterView(R.layout.item_foot); if (mAdapter.hasHeader()) { recyclerView.smoothScrollToPosition(mAdapter.getItemCount() + 1); } else { recyclerView.smoothScrollToPosition(mAdapter.getItemCount()); } } @Override public void onLoadMore() { new Thread(new Runnable() { @Override public void run() { try { Log.e("TAG", "?"); Thread.sleep(5000); //onFinish() onFinish(arrayList); } catch (InterruptedException e) { e.printStackTrace(); } } }).start(); } @Override public void onFinish(List<ViewModel> contents) { Message message = Message.obtain(); message.obj = contents; mHandler.sendMessage(message); setLoadingMore(false); } }); } private void setRecyclerAdapter(RecyclerView recyclerView) { mAdapter = new RecyclerViewAdapter(items); mAdapter.setOnItemClickListener(this); recyclerView.setAdapter(mAdapter); arrayList = new ArrayList<ViewModel>(mAdapter.getList()); } private void initFab() { mActionButtonPlus = (FloatingActionButtonPlus) findViewById(R.id.FabPlus); mActionButtonPlus.setOnItemClickListener(new FloatingActionButtonPlus.OnItemClickListener() { @Override public void onItemClick(FabTagLayout tagView, int position) { Snackbar.make(content, "Click btn" + position, Snackbar.LENGTH_SHORT).show(); } }); } private void initToolbar() { final Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); final ActionBar actionBar = getSupportActionBar(); if (actionBar != null) { actionBar.setHomeAsUpIndicator(R.drawable.ic_menu_black_24dp); actionBar.setDisplayHomeAsUpEnabled(true); } } private void setupDrawerLayout() { drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); navigationView = (NavigationView) findViewById(R.id.navigation_view); navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() { @Override public boolean onNavigationItemSelected(MenuItem menuItem) { Snackbar.make(content, menuItem.getTitle() + " pressed", Snackbar.LENGTH_LONG).show(); menuItem.setChecked(true); drawerLayout.closeDrawers(); return true; } }); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: drawerLayout.openDrawer(GravityCompat.START); return true; } return super.onOptionsItemSelected(item); } @Override public void onItemClick(View view, ViewModel viewModel) { DetailActivity.navigate(this, view.findViewById(R.id.image), viewModel); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { if ((System.currentTimeMillis() - mExitTime) > 2000) { Toast.makeText(this, "??", Toast.LENGTH_SHORT).show(); mExitTime = System.currentTimeMillis(); } else { finish(); } return true; } return super.onKeyDown(keyCode, event); } }