实例介绍
【实例简介】
【实例截图】
【核心代码】
package com.liyu.fakeweather.ui;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.design.widget.Snackbar;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.widget.Toolbar;
import android.view.MenuItem;
import android.view.View;
import com.liyu.fakeweather.AppGlobal;
import com.liyu.fakeweather.R;
import com.liyu.fakeweather.event.ModuleChangedEvent;
import com.liyu.fakeweather.event.ThemeChangedEvent;
import com.liyu.fakeweather.model.Module;
import com.liyu.fakeweather.ui.base.BaseActivity;
import com.liyu.fakeweather.ui.bus.BusFragment;
import com.liyu.fakeweather.ui.girl.GirlsFragment;
import com.liyu.fakeweather.ui.reading.ReadingFragment;
import com.liyu.fakeweather.ui.setting.AboutActivity;
import com.liyu.fakeweather.ui.setting.SettingActivity;
import com.liyu.fakeweather.ui.weather.WeatherFragment;
import com.liyu.fakeweather.utils.DoubleClickExit;
import com.liyu.fakeweather.utils.RxDrawer;
import com.liyu.fakeweather.utils.SimpleSubscriber;
import com.liyu.fakeweather.utils.UpdateUtil;
import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;
import org.greenrobot.eventbus.ThreadMode;
import org.litepal.crud.DataSupport;
import org.litepal.crud.callback.FindMultiCallback;
import java.util.ArrayList;
import java.util.List;
import rx.android.schedulers.AndroidSchedulers;
public class MainActivity extends BaseActivity {
private DrawerLayout mDrawerLayout;
private ActionBarDrawerToggle mDrawerToggle;
private NavigationView navigationView;
private FragmentManager fragmentManager;
private String currentFragmentTag;
private static final String FRAGMENT_TAG_BUS = "公交";
private static final String FRAGMENT_TAG_WEATHER = "天气";
private static final String FRAGMENT_TAG_GANK = "福利";
private static final String FRAGMENT_TAG_READING = "闲读";
private static final String FRAGMENT_TAG_EMPTY = "四大皆空";
@Override
protected int getLayoutId() {
return R.layout.activity_main;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
protected int getMenuId() {
return 0;
}
@Override
protected void initViews(Bundle savedInstanceState) {
if (savedInstanceState != null) {
currentFragmentTag = savedInstanceState.getString(AppGlobal.CURRENT_INDEX);
}
fragmentManager = getSupportFragmentManager();
mDrawerLayout = findViewById(R.id.drawer_layout);
initNavigationViewHeader();
initFragment();
}
private void initFragment() {
DataSupport.order("index").findAsync(Module.class).listen(new FindMultiCallback() {
@Override
public <T> void onFinish(List<T> t) {
List<Module> modules = (List<Module>) t;
List<Module> enabledModule = new ArrayList<>();
if (t == null || t.size() == 0) {
modules.add(new Module("天气", R.drawable.ic_weather, R.id.navigation_item_2, 0, true));
modules.add(new Module("公交", R.drawable.ic_bus, R.id.navigation_item_1, 1, true));
modules.add(new Module("闲读", R.drawable.ic_reading, R.id.navigation_item_4, 2, true));
modules.add(new Module("福利", R.drawable.ic_gank, R.id.navigation_item_3, 3, true));
DataSupport.saveAll(modules);
}
for (Module module : modules) {
if (module.isEnable()) {
enabledModule.add(module);
navigationView.getMenu().add(R.id.module_group, module.getMenuId(), module.getIndex(), module.getName()).setIcon(getDrawbleId(module.getName())).setCheckable(true);
}
}
if (enabledModule.size() > 0) {
navigationView.getMenu().getItem(0).setChecked(true);
switchContent(enabledModule.get(0).getName());
} else {
switchContent(FRAGMENT_TAG_EMPTY);
}
}
});
}
private int getDrawbleId(String name) {
switch (name) {
case "天气":
return getResId(this, "ic_weather", "drawable");
case "公交":
return getResId(this, "ic_bus", "drawable");
case "闲读":
return getResId(this, "ic_reading", "drawable");
case "福利":
return getResId(this, "ic_gank", "drawable");
default:
return getResId(this, "ic_weather", "drawable");
}
}
private int getResId(Context context, String resName, String defType) {
return context.getResources().getIdentifier(resName, defType, context.getPackageName());
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putString(AppGlobal.CURRENT_INDEX, currentFragmentTag);
}
@Override
protected void loadData() {
UpdateUtil.check(MainActivity.this, true);
}
public void initDrawer(Toolbar toolbar) {
if (toolbar != null) {
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, toolbar, R.string.open, R.string.close) {
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
}
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
}
};
mDrawerToggle.syncState();
mDrawerLayout.addDrawerListener(mDrawerToggle);
}
}
private void initNavigationViewHeader() {
navigationView = findViewById(R.id.navigation);
navigationView.inflateHeaderView(R.layout.drawer_header);
navigationView.setNavigationItemSelectedListener(new NavigationItemSelected());
}
class NavigationItemSelected implements NavigationView.OnNavigationItemSelectedListener {
@Override
public boolean onNavigationItemSelected(final MenuItem menuItem) {
RxDrawer.close(mDrawerLayout).observeOn(AndroidSchedulers.mainThread()).subscribe(
new SimpleSubscriber<Void>() {
@Override
public void onNext(Void aVoid) {
switch (menuItem.getItemId()) {
case R.id.navigation_item_1:
menuItem.setChecked(true);
switchContent(FRAGMENT_TAG_BUS);
break;
case R.id.navigation_item_2:
menuItem.setChecked(true);
switchContent(FRAGMENT_TAG_WEATHER);
break;
case R.id.navigation_item_3:
menuItem.setChecked(true);
switchContent(FRAGMENT_TAG_GANK);
break;
case R.id.navigation_item_4:
menuItem.setChecked(true);
switchContent(FRAGMENT_TAG_READING);
break;
case R.id.navigation_item_settings:
startActivity(new Intent(MainActivity.this, SettingActivity.class));
break;
case R.id.navigation_item_about:
startActivity(new Intent(MainActivity.this, AboutActivity.class));
break;
}
}
});
return false;
}
}
public void switchContent(String name) {
if (currentFragmentTag != null && currentFragmentTag.equals(name))
return;
FragmentTransaction ft = fragmentManager.beginTransaction();
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_CLOSE);
Fragment currentFragment = fragmentManager.findFragmentByTag(currentFragmentTag);
if (currentFragment != null) {
ft.hide(currentFragment);
}
Fragment foundFragment = fragmentManager.findFragmentByTag(name);
if (foundFragment == null) {
switch (name) {
case FRAGMENT_TAG_BUS:
foundFragment = new BusFragment();
break;
case FRAGMENT_TAG_WEATHER:
foundFragment = new WeatherFragment();
break;
case FRAGMENT_TAG_GANK:
foundFragment = new GirlsFragment();
break;
case FRAGMENT_TAG_READING:
foundFragment = new ReadingFragment();
break;
case FRAGMENT_TAG_EMPTY:
foundFragment = new FourEmptyFragment();
break;
}
}
if (foundFragment == null) {
} else if (foundFragment.isAdded()) {
ft.show(foundFragment);
} else {
ft.add(R.id.contentLayout, foundFragment, name);
}
ft.commit();
currentFragmentTag = name;
invalidateOptionsMenu();
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void onThemeChanged(ThemeChangedEvent event) {
this.recreate();
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void onModuleChanged(ModuleChangedEvent event) {
this.recreate();
}
@Override
protected void onStart() {
super.onStart();
if (!EventBus.getDefault().isRegistered(this)) {
EventBus.getDefault().register(this);
}
}
@Override
protected void onDestroy() {
if (EventBus.getDefault().isRegistered(this))
EventBus.getDefault().unregister(this);
super.onDestroy();
}
@Override
public void onBackPressed() {
if (mDrawerLayout.isDrawerOpen(GravityCompat.START)) {
mDrawerLayout.closeDrawer(GravityCompat.START);
} else {
if (!DoubleClickExit.check()) {
Snackbar.make(MainActivity.this.getWindow().getDecorView().findViewById(android.R.id.content), "再按一次退出 App!", Snackbar.LENGTH_SHORT).show();
} else {
super.onBackPressed();
System.exit(0);
}
}
}
}
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