如何在点击监听器中使用如何进行不同的活动？

我在我的应用程序的第一页中有搜索栏，当我写信给搜索栏打开搜索助手（列表视图寻求帮助）时，我想单击列表视图中的每个项目以转到不同的活动。如何在点击监听器中使用如何进行不同的活动？

问题：我不知道在此列表视图中使用if来转到不同的活动。我测试了这个代码，但只是在第一个if开始第一个活动。

import java.util.ArrayList; 
import java.util.HashMap; 
import java.util.List; 
import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.SimpleAdapter; 
import android.widget.TextView; 


public class MainActivity extends Activity { 

    ArrayList<HashMap<String,String>> adp; 
    // Array of strings storing country names 
    String[] countries = new String[] { 
      "India", 
      "Pakistan", 
      "Sri Lanka", 
      "China", 
      "Bangladesh", 
      "Nepal", 
      "Afghanistan", 
      "North Korea", 
      "South Korea", 
      "Japan" 
    }; 

// Array of integers points to images stored in /res/drawable-ldpi/ 
    int[] flags = new int[]{ 
       R.drawable.india, 
       R.drawable.pakistan, 
       R.drawable.srilanka, 
       R.drawable.china, 
       R.drawable.bangladesh, 
       R.drawable.nepal, 
       R.drawable.afghanistan, 
       R.drawable.nkorea, 
       R.drawable.skorea, 
       R.drawable.japan 
    }; 

    // Array of strings to store currencies 
    String[] currency = new String[]{ 
     "Indian Rupee", 
     "Pakistani Rupee", 
     "Sri Lankan Rupee", 
     "Renminbi", 
     "Bangladeshi Taka", 
     "Nepalese Rupee", 
     "Afghani", 
     "North Korean Won", 
     "South Korean Won", 
     "Japanese Yen" 
    }; 




    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 


     // Each row in the list stores country name, currency and flag 
     List<HashMap<String,String>> aList = new ArrayList<HashMap<String,String>>(); 


     for(int i=0;i<10;i++){ 
       HashMap<String, String> hm = new HashMap<String,String>(); 
      hm.put("txt", countries[i]); 
      hm.put("flag", Integer.toString(flags[i])); 
      hm.put("cur", currency[i]); 
      aList.add(hm); 
     } 

     // Keys used in Hashmap 
     String[] from = { "flag","txt"}; 

     // Ids of views in listview_layout 
     int[] to = { R.id.flag,R.id.txt}; 

     // Instantiating an adapter to store each items 
     // R.layout.listview_layout defines the layout of each item 
     SimpleAdapter adapter = new SimpleAdapter(getBaseContext(), aList, R.layout.autocomplete_layout, from, to); 

     // Getting a reference to CustomAutoCompleteTextView of activity_main.xml layout file 
     CustomAutoCompleteTextView autoComplete = (CustomAutoCompleteTextView) findViewById(R.id.autocomplete); 

     /** Defining an itemclick event listener for the autocompletetextview */ 
     OnItemClickListener itemClickListener = new OnItemClickListener() { 
      @Override 
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 


      if(parent.getAdapter().getItem(position).equals("India")){ 
        Intent intent = new Intent(MainActivity.this, TestPage.class); 
        startActivity(intent); 
       } else if(parent.getAdapter().getItem(position).equals("Pakistan")){ 
        Intent intent = new Intent(MainActivity.this, TestPage2.class); 
        startActivity(intent); 
       } 


      } 
     }; 

     /** Setting the itemclick event listener */ 
     autoComplete.setOnItemClickListener(itemClickListener); 

     /** Setting the adapter to the listView */ 
     autoComplete.setAdapter(adapter); 

    } 

    /** A callback method, which is executed when this activity is about to be killed 
    * This is used to save the current state of the activity 
    * (eg : Configuration changes : portrait -> landscape) 
    */ 
    @Override 
    protected void onSaveInstanceState(Bundle outState) { 
     TextView tvCurrency = (TextView) findViewById(R.id.tv_currency) ;  
     outState.putString("currency", tvCurrency.getText().toString()); 
     super.onSaveInstanceState(outState); 
    } 

    /** A callback method, which is executed when the activity is recreated 
    * (eg : Configuration changes : portrait -> landscape) 
    */ 
    @Override 
    protected void onRestoreInstanceState(Bundle savedInstanceState) { 
     TextView tvCurrency = (TextView) findViewById(R.id.tv_currency) ;  
     tvCurrency.setText(savedInstanceState.getString("currency")); 
     super.onRestoreInstanceState(savedInstanceState); 
    } 


    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     getMenuInflater().inflate(R.menu.activity_main, menu); 
     return true; 
    } 
}

来源

2013-12-21 user3101008

如果您点击巴基斯坦的listitem会发生什么？ – csmckelvey

你应该首先检查'getItem（）'的返回类型。它是否会返回您认为它返回的项目？ –

我该如何在我的代码中使用getitem（），你是什么意思，对不起，我在eclipse – user3101008

在你的列表视图，如您使用的是自定义适配器，我可以看到，在HashMap中，要添加三件事情，所以你应该在onItemClick听众列表视图的使用contains方法

你的代码是文件。替换equals与contains

来源

2013-12-21 18:05:29

上测试过它，但不工作。在搜索项目之后点击以跳转应用程序 – user3101008

请解释更多 – user3101008

首先调试您的应用程序，或将整个项目粘贴到某处。我会看看它 –

自定义列表视图不会像您使用的那样支持onitemclicklistner。如果你在每一行的baseadapter中调用setonclicklistner会更好。这将完美运作。请尝试一下，让我知道你是否需要更多的帮助。谢谢

来源

2013-12-22 16:10:02 Ramesh

如何在点击监听器中使用如何进行不同的活动？

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