【发布时间】：2019-01-31 13:27:46
【问题描述】：
在我的项目中，我希望搜索活动在搜索活动（餐厅和餐点）中显示两种类型的数据，并且我想像在 Twitter 和 Instagram 中一样实现它，我的方法如下：
在搜索活动中，我创建了两个片段，每个片段都有一个简单的列表视图，启动应用程序时会显示我的数据，但列表视图不会显示所有项目，而是让它们滚动（在 Instagram搜索活动，它以全高显示建议的和最近的项目）
这是代码
搜索活动：
package com.byshy.light.Activities;
import android.content.pm.ActivityInfo;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.WindowManager;
import com.byshy.light.Fragments.SearchRestaurantsFragment;
import com.byshy.light.R;
import com.byshy.light.SearchMealsFragment;
public class SearchActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.search_restaurants_frag, new SearchRestaurantsFragment()).commit();
FragmentTransaction transaction2 = getSupportFragmentManager().beginTransaction();
transaction2.replace(R.id.search_meals_frag, new SearchMealsFragment()).commit();
}
}
搜索活动 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_width="match_parent"
android:layout_height="match_parent"
tools:context=".Activities.SearchActivity">
<FrameLayout
android:layout_alignParentTop="true"
android:id="@+id/search_container"
android:layout_width="match_parent"
android:layout_height="56dp"
android:background="@color/colorPrimary"
android:transitionName="search_bar">
<EditText
android:id="@+id/main_screen_search_bar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginStart="10dp"
android:layout_marginTop="7dp"
android:layout_marginEnd="10dp"
android:layout_marginBottom="7dp"
android:background="@drawable/curved_layout"
android:hint="@string/search"
android:inputType="text"
android:padding="10dp" />
</FrameLayout>
<ScrollView
android:layout_alignParentBottom="true"
android:layout_below="@id/search_container"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<FrameLayout
android:id="@+id/search_restaurants_frag"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</FrameLayout>
<FrameLayout
android:id="@+id/search_meals_frag"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</FrameLayout>
</LinearLayout>
</ScrollView>
</RelativeLayout>
餐厅片段：
package com.byshy.light.Fragments;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import com.byshy.light.R;
public class SearchRestaurantsFragment extends Fragment {
ListView lv1;
public SearchRestaurantsFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_search_restaurants, container, false);
lv1 = root.findViewById(R.id.search_restaurants_list_view);
String[] items1 = new String[3];
items1[0] = "res1";
items1[1] = "res2";
items1[2] = "res3";
ArrayAdapter<String> aa1 = new ArrayAdapter<>(getContext(), android.R.layout.simple_list_item_1, items1);
lv1.setAdapter(aa1);
return root;
}
}
膳食片段：
package com.byshy.light;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class SearchMealsFragment extends Fragment {
ListView lv2;
public SearchMealsFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View root = inflater.inflate(R.layout.fragment_search_meals, container, false);
lv2 = root.findViewById(R.id.search_meals_list_view);
String[] items2 = new String[10];
items2[0] = "meal1";
items2[1] = "meal2";
items2[2] = "meal3";
items2[3] = "meal4";
items2[4] = "meal5";
items2[5] = "meal6";
items2[6] = "meal7";
items2[7] = "meal8";
items2[8] = "meal9";
items2[9] = "meal10";
ArrayAdapter<String> aa2 = new ArrayAdapter<>(getContext(), android.R.layout.simple_list_item_1, items2);
lv2.setAdapter(aa2);
return root;
}
}
fragments xml 基本相同，只是有一些 id 不同，所以我只发布一个：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".SearchMealsFragment">
<RelativeLayout
android:id="@+id/small_search_restaurants_bar"
android:layout_width="match_parent"
android:layout_height="35dp"
android:background="@color/white"
android:clickable="true"
android:focusable="true"
android:foreground="?android:attr/selectableItemBackground">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginStart="10dp"
android:text="@string/meals"
android:textSize="15sp"
android:textStyle="bold" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_centerVertical="true"
android:layout_marginEnd="10dp"
android:text="@string/more"
android:textColor="@color/colorPrimaryDark"
android:textSize="15sp" />
</RelativeLayout>
<ListView
android:id="@+id/search_meals_list_view"
android:layout_width="match_parent"
android:layout_height="match_parent">
</ListView>
</LinearLayout>
【问题讨论】：