当我单击导航抽屉中的任何菜单项时,菜单项的内容出现在卡片下面。卡片应该消失,然后菜单项的内容应该显示在它们的位置上。菜单项的内容以片段的形式写入。有人能帮助我解决这个问题吗?附加下面的代码...
下面是MainActivity Java文件
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
drawerLayout = (DrawerLayout)findViewById(R.id.drawer_layout);
actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawerLayout,toolbar,R.string.drawer_open,R.string.drawer_close);
drawerLayout.setDrawerListener(actionBarDrawerToggle);
////////////////////////////////////////////////////////////////////
navigationView = (NavigationView)findViewById(R.id.navigation_view);
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
switch (menuItem.getItemId())
{
case R.id.menu_profile:
fragmentTransaction=getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.main_container, new ProfileFragment());
fragmentTransaction.commit();
getSupportActionBar().setTitle("Profile");
menuItem.setChecked(true);
drawerLayout.closeDrawers();
break;
case R.id.menu_language:
fragmentTransaction=getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.main_container, new LanguageFragment());
fragmentTransaction.commit();
getSupportActionBar().setTitle("Set Language");
menuItem.setChecked(true);
drawerLayout.closeDrawers();
break;
case R.id.menu_tutorial:
fragmentTransaction=getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.main_container, new TutorialFragment());
fragmentTransaction.commit();
getSupportActionBar().setTitle("Tutorial");
menuItem.setChecked(true);
drawerLayout.closeDrawers();
break;
}
return true;
}
});
}
下面是XML文件
<?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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:id="@+id/drawer_layout"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="@+id/main_container">
<include
android:layout_height="wrap_content"
android:layout_width="match_parent"
layout="@layout/toolbar_layout"
/>
<android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/card_fixed"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_gravity="center_horizontal"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="5dp"
card_view:cardCornerRadius="10dp"
card_view:cardBackgroundColor="@android:color/background_light">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/card_fixed_heading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="Sensor Details"
android:fontFamily="serif"
android:textSize="24sp"
android:textStyle="bold"
android:textColor="#000"/>
<TextView
android:id="@+id/card_fixed_details"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:padding="5dp"
android:text="pH Level - \nTemperature - \nMoisture -"
android:fontFamily="serif"
android:textSize="16sp"
android:textColor="#000"/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/card_notification"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_gravity="center_horizontal"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="5dp"
card_view:cardCornerRadius="10dp"
card_view:cardBackgroundColor="@android:color/background_light">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/card_notification_heading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Water The Plants!"
android:fontFamily="serif"
android:textSize="24sp"
android:layout_gravity="center"
android:textStyle="bold"
android:textColor="#000"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Done"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:textStyle="bold"
android:fontFamily="serif"
android:layout_gravity="center_horizontal"
/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/card_prediction"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_gravity="center_horizontal"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="5dp"
card_view:cardCornerRadius="10dp"
card_view:cardBackgroundColor="@android:color/background_light">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/card_market_heading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Market Prediction"
android:fontFamily="serif"
android:textSize="24sp"
android:layout_gravity="center"
android:textStyle="bold"
android:textColor="#000"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Click Here!"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:textStyle="bold"
android:fontFamily="serif"
android:layout_gravity="center_horizontal"
android:onClick="marketPrediction"
/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/card_pest"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_gravity="center_horizontal"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="5dp"
card_view:cardCornerRadius="10dp"
card_view:cardBackgroundColor="@android:color/background_light">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/card_pest_heading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Pest Details"
android:fontFamily="serif"
android:textSize="24sp"
android:layout_gravity="center"
android:textStyle="bold"
android:textColor="#000"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Click Here!"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:textStyle="bold"
android:fontFamily="serif"
android:layout_gravity="center_horizontal"
android:onClick="pestDetails"
/>
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
<android.support.design.widget.NavigationView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/navigation_view"
android:layout_gravity="start"
app:menu="@menu/drawer_menu"
app:headerLayout="@layout/navigation_drawer_header"
>
</android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>
3条答案
按热度按时间cld4siwp1#
1.您需要获取
CardView
的ID并将其存储在变量中。如果是,请使用以下命令:
1.在这样做之后,您需要将
setVisibility
转换为GONE
,以便将CardView
隐藏在任何您想隐藏的地方。(视图.已删除);
1.每当你
setVisibility
到你的View
时,有三种选择,一个六个月一个月一个月一个月一个月一个月一个月七个月一个月一个月一个月八个月一个月
1.您可以使用
setVisibility(View.VISIBLE)
使CardView
或任何其他Views
重新出现。View.INVISIBLE
会占用布局空间,但View.GONE
不会占用任何空间。(由于某种原因,我无法格式化代码以使
CardView
对GONE
可见。)oxf4rvwz2#
每个
Android View
都有出现和消失的能力,只需在java代码中使用setVisibility()
并将其设置为View.GONE
即可示例:
bfnvny8b3#