android - 默认视图卡在顶部，无论如何要删除它
问题描述
我在开发 android 应用程序时遇到问题，我在DrawerLayout嵌套中创建了一个默认视图，recyclerview但是当应用程序json从服务器获取而带有数据的视图显示在其下方时，该视图卡住了。
下面是我为 mainactivity.xml content.xml、adapter.java 类和 mainactivity.java 类包含的代码
主要活动.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
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:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:fitsSystemWindows="true">
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/swipe_refresh_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="@+id/customeView"
android:scrollbars="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.v4.widget.SwipeRefreshLayout>
</android.support.design.widget.CoordinatorLayout>
<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>``
content.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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="wrap_content">
<android.support.v7.widget.CardView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="11dp"
android:layout_marginRight="11dp"
android:layout_marginTop="15dp"
android:layout_marginBottom="7dp"
app:cardCornerRadius="10dp">
<RelativeLayout
android:background="?android:attr/selectableItemBackground"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/image"
android:transitionName="img"
android:layout_width="match_parent"
android:layout_height="200dp"
android:scaleType="centerCrop"
tools:ignore="UnusedAttribute" />
<ImageView
android:id="@+id/shadow_bottom"
android:src="@drawable/bottom_shadow"
android:layout_alignBottom="@id/image"
android:layout_width="match_parent"
android:layout_height="80dp" />
<FrameLayout
android:id="@+id/layoutDate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/image"
android:background="@drawable/round_white"
android:padding="5dp"
android:layout_alignParentRight="true"
android:layout_marginRight="20dp"
android:layout_marginTop="-50dp">
<ImageView
android:src="@drawable/ic_date"
android:layout_width="18dp"
android:layout_height="18dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp" />
<TextView
android:textColor="#606060"
android:id="@+id/publishedAt"
android:layout_marginLeft="27dp"
android:layout_marginRight="10dp"
android:text="01 January 1990"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</FrameLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:textStyle="bold"
android:textColor="@color/colorTextTitle"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:text="Title"
android:textSize="17sp"
android:layout_marginTop="10dp"
android:layout_below="@id/image"
android:id="@+id/title" />
<TextView
android:id="@+id/txtContents"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/title"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginTop="5dp"
android:text="Desc"
/>
<TextView
android:id="@+id/source"
android:layout_width="wrap_content"
android:layout_height="20dp"
android:layout_below="@id/txtContents"
android:layout_marginTop="10dp"
android:layout_marginLeft="16dp"
android:layout_marginBottom="10dp"
android:fontFamily="sans-serif-light"
android:textStyle="bold"
android:textColor="@color/colorTextTitle"
android:maxLines="1"
android:drawablePadding="10dp"
android:singleLine="true"
android:ellipsize="end"
android:text="Source" />
</RelativeLayout>
</android.support.v7.widget.CardView>
</FrameLayout>``
Adapter.java
``public class Adapter extends
RecyclerView.Adapter<Adapter.AdapterViewHolder> {
private List<Articles> dataList;
private Context context;
private String storage_url="http://192.168.56.1/muslimnews/storage/";
public Adapter(Context context,List<Articles> dataList){
this.context = context;
this.dataList = dataList;
}
class AdapterViewHolder extends RecyclerView.ViewHolder {
public final View mView;
TextView txtTitle;
TextView txtContents;
TextView source;
TextView date;
private ImageView coverImage;
AdapterViewHolder(View itemView) {
super(itemView);
mView = itemView;
txtTitle = mView.findViewById(R.id.title);
txtContents=mView.findViewById(R.id.txtContents);
coverImage = mView.findViewById(R.id.image);
source=mView.findViewById(R.id.source);
date=mView.findViewById(R.id.publishedAt);
}
}
@NonNull
@Override
public AdapterViewHolder onCreateViewHolder( ViewGroup parent, int viewType) {
LayoutInflater layoutInflater=LayoutInflater.from(parent.getContext());
View view=layoutInflater.inflate(R.layout.content_main,parent,false);
return new AdapterViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull AdapterViewHolder holder, int position) {
holder.txtTitle.setText(dataList.get(position).getTitle());
holder.txtContents.setText(Html.fromHtml(dataList.get(position).getShort_content()));
holder.source.setText(dataList.get(position).getSource());
try {
Date date=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(dataList.get(position).getCreated_at());
String publishedDate=new SimpleDateFormat("dd MMMM yyyy").format(date);
holder.date.setText(publishedDate);
} catch (ParseException e) {
e.printStackTrace();
}
Picasso.Builder builder = new Picasso.Builder(context);
builder.downloader(new OkHttp3Downloader(context));
builder.build().load(storage_url+dataList.get(position).getImgUrl())
.placeholder((R.drawable.ic_launcher_background))
.error(R.drawable.ic_launcher_background)
.into(holder.coverImage);
}
@Override
public int getItemCount() {
return dataList==null ? 0: dataList.size();
}
}``
mainactivity.java
`public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener,
SwipeRefreshLayout.OnRefreshListener {
private Adapter adapter;
private RecyclerView recyclerView;
private SwipeRefreshLayout swipeRefreshLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
GetDataService service= RetrofitClientInstance.getRetrofitInstance()
.create(GetDataService.class);
Call<List<Articles>> call=service.getAllArticles();
call.enqueue(new Callback<List<Articles>>() {
@Override
public void onResponse(Call<List<Articles>> call, Response<List<Articles>> response) {
recyclerView=findViewById(R.id.customeView);
adapter=new Adapter(MainActivity.this,response.body());
RecyclerView.LayoutManager layoutManager=new LinearLayoutManager(MainActivity.this);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setNestedScrollingEnabled(false);
recyclerView.setAdapter(adapter);
//generateDataList(response.body());
swipeRefreshLayout.setRefreshing(false);
}
@Override
public void onFailure(Call<List<Articles>> call, Throwable t) {
Toast.makeText(MainActivity.this,"Something went wrong",Toast.LENGTH_LONG).show();
}
});
swipeRefresh();
createMenu();
}
private void swipeRefresh(){
swipeRefreshLayout = findViewById(R.id.swipe_refresh_layout);
swipeRefreshLayout.setOnRefreshListener(this);
swipeRefreshLayout.setColorSchemeResources(R.color.colorAccent);
}
private void createMenu(){
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
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.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
private void fillMain(){
GetDataService service= RetrofitClientInstance.getRetrofitInstance()
.create(GetDataService.class);
Call<List<Articles>> call=service.getAllArticles();
call.enqueue(new Callback<List<Articles>>() {
@Override
public void onResponse(Call<List<Articles>> call, Response<List<Articles>> response) {
swipeRefreshLayout.setRefreshing(false);
generateDataList(response.body());
}
@Override
public void onFailure(Call<List<Articles>> call, Throwable t) {
swipeRefreshLayout.setRefreshing(true);
Toast.makeText(MainActivity.this,"Something went wrong",Toast.LENGTH_LONG).show();
}
});
}
private void generateDataList(List<Articles> articlesList){
recyclerView=findViewById(R.id.customeView);
adapter=new Adapter(this,articlesList);
adapter.notifyDataSetChanged();
RecyclerView.LayoutManager layoutManager=new LinearLayoutManager(MainActivity.this);
recyclerView.setLayoutManager(layoutManager);
// recyclerView.setItemAnimator(new DefaultItemAnimator());
// recyclerView.setNestedScrollingEnabled(false);
recyclerView.setAdapter(adapter);
}
@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) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// 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.nav_camera) {
// Handle the camera action
} else if (id == R.id.nav_gallery) {
} else if (id == R.id.nav_slideshow) {
} else if (id == R.id.nav_manage) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
@Override
public void onRefresh() {
fillMain();
}
}`
解决方案
将您的清单主题设置为 Appcomat.theme.nocationbar 并将自定义工具栏或操作栏置于活动中。
<application
android:name="androidx.multidex.MultiDexApplication"
android:allowBackup="true"
android:appComponentFactory="whateverString"
android:debuggable="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:screenOrientation="portrait"
android:supportsRtl="true"
android:testOnly="false"
android:theme="@style/AppTheme" //here you can edit it. completly.
android:usesCleartextTraffic="true"
tools:ignore="GoogleAppIndexingWarning,HardcodedDebugMode"
tools:replace="android:appComponentFactory"
tools:targetApi="m">
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