Android:MainActivity/Fragment中的ListView/GridView重叠工具栏
所以我最近一直在学习教程，以便在我的主页中创建一个Android:MainActivity/Fragment中的ListView/GridView重叠工具栏,android,listview,android-fragments,android-activity,gridview,Android,Listview,Android Fragments,Android Activity,Gridview,所以我最近一直在学习教程，以便在我的主页中创建一个ListView，它是一个片段。因为这不起作用（据我所知？），我在我的主要活动中实现了以下代码，其中包含一个导航抽屉。我已尝试简化您的理解以及我希望实现以下目标的应用程序顺序： 用户登录应用程序 用户通过Intent 用户可以选择导航抽屉中的各种片段（主页、收藏夹、帮助等） 我还创建了Product类来保存ListView/GridView中图像、标题和描述的方法。我还创建了ListViewAdapter和GridViewAdapter类来扩展L
ListViewIntentimport android.content.SharedPreferences;
import android.os.Bundle;
import android.support.v4.app.FragmentTransaction;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewStub;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.ListView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
private ViewStub stubGrid;
private ViewStub stubList;
private ListView listView;
private GridView gridView;
private ListViewAdapter listViewAdapter;
private GridViewAdapter gridViewAdapter;
private List<Product> productList;
private int currentViewMode = 0;
static final int VIEW_MODE_LISTVIEW = 0;
static final int VIEW_MODE_GRIDVIEW = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
stubList = (ViewStub) findViewById(R.id.stub_list);
stubGrid = (ViewStub) findViewById(R.id.stub_grid);
// Inflate ViewStub before we get view
stubList.inflate();
stubGrid.inflate();
listView = (ListView) findViewById(R.id.myListView);
gridView = (GridView) findViewById(R.id.myGridView);
// Get list of products
getProductList();
// Get current view mode in shared preferences
SharedPreferences sharedPreferences = getSharedPreferences("View Mode", MODE_PRIVATE);
currentViewMode = sharedPreferences.getInt("currentViewMode", VIEW_MODE_LISTVIEW); // Default view is ListView
// Register item click
//listView.setOnItemClickListener(onItemClick);
//gridView.setOnItemClickListener(onItemClick);
switchView();
}
private void switchView() {
if (VIEW_MODE_LISTVIEW == currentViewMode) {
// Display ListView
stubList.setVisibility(View.VISIBLE);
// Hide GridView
stubGrid.setVisibility(View.GONE);
} else {
// Hide ListView
stubList.setVisibility(View.GONE);
// Display GridView
stubGrid.setVisibility(View.VISIBLE);
}
setAdapters();
}
private void setAdapters() {
if (VIEW_MODE_LISTVIEW == currentViewMode) {
listViewAdapter = new ListViewAdapter(this, R.layout.list_item, productList);
listView.setAdapter(listViewAdapter);
} else {
gridViewAdapter = new GridViewAdapter(this, R.layout.grid_item, productList);
gridView.setAdapter(gridViewAdapter);
}
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.item_menu_1:
if (VIEW_MODE_LISTVIEW == currentViewMode) {
currentViewMode = VIEW_MODE_GRIDVIEW;
} else {
currentViewMode = VIEW_MODE_LISTVIEW;
}
// Switch view
switchView();
// Save view mode in share preferences
SharedPreferences sharePreferences = getSharedPreferences("ViewMode", MODE_PRIVATE);
SharedPreferences.Editor editor = sharePreferences.edit();
editor.putInt("currentViewMode", currentViewMode);
editor.commit();
break;
}
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
/*
if (id == R.id.action_settings) {
return true;
}
*/
return super.onOptionsItemSelected(item);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.first_fragment) {
setTitle("Home");
FirstFragment fragment = new FirstFragment();
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.frame, fragment, "fragment1");
fragmentTransaction.commit();
} else if (id == R.id.second_fragment) {
setTitle("Favourites");
SecondFragment fragment = new SecondFragment();
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.frame, fragment, "fragment2");
fragmentTransaction.commit();
} else if (id == R.id.third_fragment) {
setTitle("Account");
ThirdFragment fragment = new ThirdFragment();
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.frame, fragment, "fragment3");
fragmentTransaction.commit();
} else if (id == R.id.fourth_fragment) {
setTitle("Help & Feedback");
FourthFragment fragment = new FourthFragment();
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.frame, fragment, "fragment4");
fragmentTransaction.commit();
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
public List<Product> getProductList() {
// Pseudo code to get product, replace your code to get product here
productList = new ArrayList<>();
productList.add(new Product(R.drawable.nightclub, "Title 1", "This is description 1"));
productList.add(new Product(R.drawable.nightclub, "Title 2", "This is description 2"));
productList.add(new Product(R.drawable.nightclub, "Title 3", "This is description 3"));
productList.add(new Product(R.drawable.nightclub, "Title 4", "This is description 4"));
productList.add(new Product(R.drawable.nightclub, "Title 5", "This is description 5"));
productList.add(new Product(R.drawable.nightclub, "Title 6", "This is description 6"));
productList.add(new Product(R.drawable.nightclub, "Title 7", "This is description 7"));
productList.add(new Product(R.drawable.nightclub, "Title 8", "This is description 8"));
productList.add(new Product(R.drawable.nightclub, "Title 9", "This is description 9"));
productList.add(new Product(R.drawable.nightclub, "Title 10", "This is description 10"));
return productList;
}
/*
AdapterView.OnItemClickListener onItemClick = new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// Do something when u ser clicks an item
Toast.makeText(getApplicationContext(), productList.get(position).getTitle() + " - " + productList.get(position).getDescription(), Toast.LENGTH_SHORT).show();
}
};*/
}
导入android.content.SharedReferences；
导入android.os.Bundle；
导入android.support.v4.app.FragmentTransaction；
导入android.support.design.widget.NavigationView；
导入android.support.v4.view.GravityCompat；
导入android.support.v4.widget.DrawerLayout；
导入android.support.v7.app.ActionBarDrawerToggle；
导入android.support.v7.app.AppActivity；
导入android.support.v7.widget.Toolbar；
导入android.view.Menu；
导入android.view.MenuItem；
导入android.view.view；
导入android.view.ViewStub；
导入android.widget.AdapterView；
导入android.widget.GridView；
导入android.widget.ListView；
导入android.widget.Toast；
导入java.util.ArrayList；
导入java.util.List；
公共类MainActivity扩展了AppCompatActivity
实现NavigationView.OnNavigationItemSelectedListener{
私有视图网格；
私有视图存根列表；
私有列表视图列表视图；
私有GridView GridView；
私有ListViewAdapter ListViewAdapter；
私有GridViewAdapter GridViewAdapter；
私有列表产品列表；
private int currentViewMode=0；
静态最终整型视图\模式\列表视图=0；
静态最终int视图\模式\网格视图=1；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
Toolbar Toolbar=（Toolbar）findViewById（R.id.Toolbar）；
设置支持操作栏（工具栏）；
抽屉布局抽屉=（抽屉布局）findViewById（R.id.抽屉布局）；
ActionBarDrawerToggle切换=新建ActionBarDrawerToggle(
这，抽屉，工具栏，R.string.navigation\u drawer\u open，R.string.navigation\u drawer\u close）；
抽屉。设置抽屉定位器（开关）；
toggle.syncState（）；
NavigationView NavigationView=（NavigationView）findViewById（R.id.nav_视图）；
navigationView.setNavigationItemSelectedListener（此）；
存根列表=（视图存根）findViewById（R.id.stub\u列表）；
stubGrid=（ViewStub）findViewById（R.id.stub\u grid）；
//在获得视图之前，将ViewStub充气
stubList.inflate（）；
stubGrid.充气（）；
listView=（listView）findViewById（R.id.myListView）；
gridView=（gridView）findViewById（R.id.myGridView）；
//获取产品列表
getProductList（）；
//获取共享首选项中的当前视图模式
SharedReferences SharedReferences=GetSharedReferences（“查看模式”，模式\私有）；
currentViewMode=SharedReferences.getInt（“currentViewMode”，VIEW\u MODE\u LISTVIEW）；//默认视图为LISTVIEW
//注册项目点击
//setonitemclick监听器（onItemClick）；
//setonitemclick监听器（onItemClick）；
switchView（）；
}
私有void switchView（）{
如果（视图模式列表视图==当前视图模式）{
//显示列表视图
setVisibility（View.VISIBLE）；
//隐藏网格视图
stubGrid.setVisibility（View.GONE）；
}否则{
//隐藏列表视图
stubList.setVisibility（View.GONE）；
//显示网格视图
stubGrid.setVisibility（View.VISIBLE）；
}
setAdapters（）；
}
私有void setAdapters（）{
如果（视图模式列表视图==当前视图模式）{
listViewAdapter=新listViewAdapter（此，R.layout.list\u项，productList）；
setAdapter（listViewAdapter）；
}否则{
gridViewAdapter=新的gridViewAdapter（此，R.layout.grid_项，productList）；
setAdapter（gridViewAdapter）；
}
}
@凌驾
public void onBackPressed（）{
抽屉布局抽屉=（抽屉布局）findViewById（R.id.抽屉布局）；
if（抽屉isDrawerOpen（重力压缩机启动））{
抽屉。关闭抽屉（重力压缩机启动）；
}否则{
super.onBackPressed（）；
}
}
@凌驾
公共布尔onCreateOptions菜单（菜单）{
//为菜单充气；这会将项目添加到操作栏（如果存在）。
getMenuInflater（）.充气（R.menu.main，menu）；
返回true；
}
@凌驾
公共布尔值onOptionsItemSelected（菜单项项）{
开关（item.getItemId（））{
案例R.id.项目\菜单\ 1：
如果（视图模式列表视图==当前视图模式）{
currentViewMode=视图\模式\网格视图；
}否则{
currentViewMode=视图\模式\列表视图；
}
//切换视图
switchView（）；
//在共享首选项中保存视图模式
SharedReferences sharePreferences=GetSharedReferences（“查看模式”，模式\私有）；
SharedReferences.Editor=sharePreferences.edit（）；
编辑器.putInt（“currentViewMode”，currentViewMode）；
commit（）；
打破
}
//处理操作栏项目单击此处。操作栏将
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.example.michael.whatsupldn.MainActivity"
tools:showIn="@layout/app_bar_main">
<FrameLayout
android:id="@+id/frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:alpha="200"/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayoutx mlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<include
layout="@layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header_main"
app:menu="@menu/activity_main_drawer"/>
<ViewStub
android:id="@+id/stub_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:inflatedId="@+id/showlayout"
android:layout="@layout/my_listview"/>
<ViewStub
android:id="@+id/stub_grid"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:inflatedId="@+id/showlayout"
android:layout="@layout/my_gridview"/>
</android.support.v4.widget.DrawerLayout>
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.michael.whatsupldn.MainActivity">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="@drawable/london_skyline_dark"
android:layout_alignParentTop="true"
android:id="@+id/imageView"
android:contentDescription="@string/london_skyline"/>
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="@layout/content_main" />
</android.support.design.widget.CoordinatorLayout>
// activity_Main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayoutx mlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<include
layout="@layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header_main"
app:menu="@menu/activity_main_drawer"/>
</android.support.v4.widget.DrawerLayout>
// first_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_height="match_parent"
android:layout_width="match_parent">
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false" />
</RelativeLayout>
//FirstFragment.java
.........
...............
RecyclerView mRecyclerView;
RecyclerView.LayoutManager mGridLayoutManager;
RecyclerView.LayoutManager mLinearLayoutManager;
boolean isList = false; // By default list will be shown
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
// Required for option menu
setHasOptionsMenu(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.first_fragment, null);
//REFERENCE
mRecyclerView = (RecyclerView) rootView.findViewById(R.id.recycler_view);
// Layout manager
mGridLayoutManager = new GridLayoutManager(getActivity(), 2);
mLinearLayoutManager = new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, false);
// Set layout manager
toggleListGrid();
// Set adapter to RecyclerView
...............
....................
return rootView;
}
public void toggleListGrid() {
isList = !isList;
if(isList)
mRecyclerView.setLayoutManager(mLinearLayoutManager);
else
mRecyclerView.setLayoutManager(mGridLayoutManager);
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater)
{
// Inflate the menu; this adds items to the action bar if it is present.
inflater.inflate(R.menu.main, menu);
super.onCreateOptionsMenu(menu, inflater);
}
@Override
public boolean onOptionsItemSelected(MenuItem item)
{
switch(item.getItemId())
{
case R.id.item_menu_1:
{
// Change view
toggleListGrid();
return true;
}
default:
return super.onOptionsItemSelected(item);
}
}
.........
...................