Java 在Android中，如何在另一个列表之后显示新列表

比如说，我们在谈论身体部位和锻炼

我想在单击胸部时显示胸部，它显示训练列表：

String[] bodyPart = { "Chest"};

String[] chestsWorkout = {"Bench", "Pushups", "Pullups", 
    "Incline bench", "Decline bench"};

---

有一个非常简单的方法可以做到这一点。您可以在该字符串数组bodyPart中放置许多选项以及

chest

，并且可以为特定bodyPart创建相关字符串数组，如

chestsWorkout

。您可以检查哪个bodyPart用户单击了，然后可以传递相关的字符串数组，如

chestsWorkout

MainActivity.java

package com.example.opnanotherlistexample;

import java.util.ArrayList;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class MainActivity extends ActionBarActivity {
    String[] bodyPart = { "Chest", "Legs" };

    String[] chestsWorkout = { "Bench", "Pushups", "Pullups", "Incline bench",
            "Decline bench" };
    String[] legsWorkout = { "walk", "run"};

    private ListView listNew;
    private ArrayList<String> newarraylist;
    private ArrayAdapter<String> adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        listNew = (ListView) findViewById(R.id.listNew);
        newarraylist = new ArrayList<String>();
        for (int i = 0; i < bodyPart.length; i++) {
            newarraylist.add(bodyPart[i]);
        }
        adapter = new ArrayAdapter<String>(getApplicationContext(),
                android.R.layout.simple_dropdown_item_1line, newarraylist);
        listNew.setAdapter(adapter);
        listNew.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> adapter, View view,
                    int position, long id) {
                // TODO Auto-generated method stub
                String clickedItem = newarraylist.get(position).toString();
                Intent intent = new Intent(MainActivity.this,
                        SecondActivity.class);
                if(clickedItem.toLowerCase().equals("chest")){
                    intent.putExtra("parameters", chestsWorkout);
                }else if(clickedItem.toLowerCase().equals("legs")){
                    intent.putExtra("parameters", legsWorkout);
                }
                startActivity(intent);

            }
        });
    }

}

package com.example.opnanotherlistexample;

import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class SecondActivity extends Activity {
    private ListView listAnother;
    private ArrayAdapter<String> adapter;
    private ArrayList<String> arraylist;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.secondactivity);
        listAnother = (ListView) findViewById(R.id.listAnother);
        if (getIntent().hasExtra("parameters")) {
            String[] params = getIntent().getStringArrayExtra("parameters");
            arraylist = new ArrayList<String>();
            for (int i = 0; i < params.length; i++) {
                arraylist.add(params[i]);
                Log.e("balvier", params[i]);
            }
            adapter = new ArrayAdapter<String>(getApplicationContext(),
                    android.R.layout.simple_dropdown_item_1line, arraylist);
            listAnother.setAdapter(adapter);
        }
    }

}

package com.example.opnanotherlisted示例；
导入java.util.ArrayList；
导入android.content.Intent；
导入android.os.Bundle；
导入android.support.v7.app.ActionBarActivity；
导入android.view.view；
导入android.widget.AdapterView；
导入android.widget.AdapterView.OnItemClickListener；
导入android.widget.ArrayAdapter；
导入android.widget.ListView；
公共类MainActivity扩展了ActionBarActivity{
String[]bodyPart={“胸部”、“腿部”}；
字符串[]chestsWorkout={“长凳”、“俯卧撑”、“引体向上”、“倾斜长凳”，
“下降台”}；
字符串[]legsWorkout={“走”、“跑”}；
私有ListView listNew；
私人ArrayList newarraylist；
专用阵列适配器；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
listNew=（ListView）findViewById（R.id.listNew）；
newarraylist=新ArrayList（）；
对于（int i=0；i

SecondActivity.java

package com.example.opnanotherlistexample;

import java.util.ArrayList;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class MainActivity extends ActionBarActivity {
    String[] bodyPart = { "Chest", "Legs" };

    String[] chestsWorkout = { "Bench", "Pushups", "Pullups", "Incline bench",
            "Decline bench" };
    String[] legsWorkout = { "walk", "run"};

    private ListView listNew;
    private ArrayList<String> newarraylist;
    private ArrayAdapter<String> adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        listNew = (ListView) findViewById(R.id.listNew);
        newarraylist = new ArrayList<String>();
        for (int i = 0; i < bodyPart.length; i++) {
            newarraylist.add(bodyPart[i]);
        }
        adapter = new ArrayAdapter<String>(getApplicationContext(),
                android.R.layout.simple_dropdown_item_1line, newarraylist);
        listNew.setAdapter(adapter);
        listNew.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> adapter, View view,
                    int position, long id) {
                // TODO Auto-generated method stub
                String clickedItem = newarraylist.get(position).toString();
                Intent intent = new Intent(MainActivity.this,
                        SecondActivity.class);
                if(clickedItem.toLowerCase().equals("chest")){
                    intent.putExtra("parameters", chestsWorkout);
                }else if(clickedItem.toLowerCase().equals("legs")){
                    intent.putExtra("parameters", legsWorkout);
                }
                startActivity(intent);

            }
        });
    }

}

package com.example.opnanotherlistexample;

import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class SecondActivity extends Activity {
    private ListView listAnother;
    private ArrayAdapter<String> adapter;
    private ArrayList<String> arraylist;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.secondactivity);
        listAnother = (ListView) findViewById(R.id.listAnother);
        if (getIntent().hasExtra("parameters")) {
            String[] params = getIntent().getStringArrayExtra("parameters");
            arraylist = new ArrayList<String>();
            for (int i = 0; i < params.length; i++) {
                arraylist.add(params[i]);
                Log.e("balvier", params[i]);
            }
            adapter = new ArrayAdapter<String>(getApplicationContext(),
                    android.R.layout.simple_dropdown_item_1line, arraylist);
            listAnother.setAdapter(adapter);
        }
    }

}

package com.example.opnanotherlisted示例；
导入java.util.ArrayList；
导入android.app.Activity；
导入android.os.Bundle；
导入android.util.Log；
导入android.widget.ArrayAdapter；
导入android.widget.ListView；
公共类SecondActivity扩展了活动{
私有ListView ListOther；
专用阵列适配器；
私有ArrayList ArrayList；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
//TODO自动生成的方法存根
super.onCreate（savedInstanceState）；
setContentView（R.layout.secondactivity）；
listAnother=（ListView）findViewById（R.id.listAnother）；
if（getIntent（）.hasExtra（“参数”））{
字符串[]params=getIntent（）.getStringArrayExtra（“参数”）；
arraylist=新的arraylist（）；
对于（int i=0；i

opnanotherlistexample清单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.opnanotherlistexample"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".SecondActivity" />
    </application>

</manifest>

我不知道该如何使用它。你是否阅读了文档或通过谷歌粗略搜索查看了任何示例？@MikeRetland在线提供了大量示例。而

Map

是计算机科学中最重要的数据结构之一。这是一个很好的机会来彻底地学习它。我读了一点。它只显示如何显示一个列表，而不是多个。@Kon是否与Android Studio配合使用？谢谢您的编码