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我的程序应该有一个列表视图，当点击它时，会显示点击项目的信息。我的问题是我已将单击项目的名称附加为启动新活动的 Intent 的额外内容。我需要显示的信息存储为字符串数组。我需要使用从 Intent 接收到的字符串来查找字符串数组并将其带入 Java。有人可以帮我弄这个吗？谢谢。

MainActivity.java

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


public class MainActivity extends ActionBarActivity{
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ListView listview = (ListView) findViewById(R.id.stationlist);
    listview.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> l, View v, int position, long id) {
            String[] stations = getResources().getStringArray(R.array.stations);
            String station_name = stations[position] + "_timings";
            Intent intent = new Intent(MainActivity.this, Station_timings.class);
            intent.putExtra("stationwithtime", station_name);
            intent.putExtra("position", position);
            startActivity(intent);
    };
    });
    }


@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) {
    // 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();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
 }
 }

Station_timings.class

 import android.content.res.Resources;
 import android.os.Bundle;
 import android.support.v7.app.ActionBarActivity;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.widget.ArrayAdapter;
 import android.widget.ListView;
 import android.widget.TextView;

public class Station_timings extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_station_timings);
    String station_name = getIntent().getStringExtra("stationwithtime");
    int position = getIntent().getIntExtra("position", 0);
    TextView tv = (TextView) findViewById(R.id.textview);
    Resources res = getResources();
    String[] array = getResources().getStringArray(R.array.stations);
    tv.setText(station_name);
    int arrayid = res.getIdentifier(station_name, "array" , this.getPackageName());
    String[] array2 = res.getStringArray(arrayid);
    ListView listView = new ListView(this);
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,     R.layout.activity_station_timings, array);
    listView.setAdapter(adapter);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.station_timings, 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();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}
 }

字符串.xml

 <?xml version="1.0" encoding="utf-8"?>
 <resources>

<string-array name="stations" style="@style/names_of_stations">
    <item name="Oceanside">Oceanside Station</item>
    <item name="San Clemente">San Clemente Station</item>
    <item name="San Juan Capistrano">San Juan Capistrano Station</item>
    <item name="Irvine">Irvine Station</item>
    <item name="Tustin">Tustin Station</item>
    <item name="Santa Ana">Santa Ana Station</item>
    <item name="Orange">Orange Station</item>
    <item name="Anaheim">Anaheim Station</item>
    <item name="Fullerton">Fullerton Station</item>
    <item name="Buena Park">Buena Park Station</item>
    <item name="Santa Fe Springs/Norwalk">Santa Fe Springs/Norwalk Station</item>
    <item name="Commerce">Commerce Station</item>
    <item name="Los Angeles">Los Angeles Union Station</item>
</string-array>
<string-array name ="oceanside">
    <item name="1"> 5:45 </item>
    <item name="2"> 6:30 </item>
</string-array>
<string-array name ="station_timings">
    <item name="1"> wrong </item>
    <item name="2"> wrong </item>
</string-array>
<string name="title_activity_station_timings">Station_timings</string>
<string name="hello_world">Hello world!</string>
<string name="action_settings">Settings</string>

 </resources>
4

1 回答 1

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在您的示例中，该变量station_name将包含 String "Oceanside Station"。然后你打电话

res.getIdentifier(station_name, "array" , this.getPackageName());

它将尝试获取string-array名称为 a 的资源标识符"Oceanside Station"。您提供了一个string-array名为 的"oceanside"。他们不匹配。

您可能希望考虑的另一件事是使用更结构化的格式来存储数据，例如 JSON 文档、XML 文档、CSV 文件或类似文件。然后，您可以将其作为实际对象读入您的程序，从而使它们更容易处理。

于 2014-12-10T19:47:35.617 回答