Android cliackable列表视图崩溃

Question

我试图让Listview变得可点击，但如果有任何方法/函数被调用，就像toast（）一样，它立即崩溃。

listAdapter = new ArrayAdapter<String>(this, R.layout.simplerow, arrayListCarros); 
    mainListView.setAdapter(listAdapter);  
    db.close(); 



    mainListView.setClickable(true); 
    mainListView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
     public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) { 
      toast(position); 

     } 
    }); 

Answer 1

mainListView.setClickable(true); 
    mainListView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
     public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) { 
      Toast.makeText(activityname.this, String.valueOf(position), Toast.LENGTH_SHORT).show(); 

      Intent intent = new intent(activityName.this,targerActivity.class); 
      activityName.this.startActivity(intent);  
    }