的Android定制的ListView与ArrayList中我如何打开第二个活动

Question

我有这种自定义的ListView与ArrayList和我试图打开第二个活动是利用 所用的图标是文件夹绘制

setOnItemClickListener(new OnItemClickListener() {} 

但力关闭应用程序时，我点击列表项 CbMain.java

package com.frostistudios.circuitbasicspro; 

import java.util.ArrayList; 
import java.util.List; 

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

public class CbMain extends Activity { 

String[] listItems = {"Menu One","Menu Two","Menu Three"}; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_cb_main); 



    ListView lv = (ListView) findViewById(R.id.listView); //listview in xml file 
    List<ListViewItem> items = new ArrayList<CbMain.ListViewItem>(); 

    lv.setOnItemClickListener(new OnItemClickListener() { 

     public void onItemClick(AdapterView<?> parent, View v, int position, 
       long id) { 
      if(position == 0){ 
       //call to custom method for opening activity 
       openItemOneActivity(); 
      } 
      else if(position == 1){ 
       openItemTwoActivity(); 
      } 
      else if(position == 2){ 
       openItemThreeActivity(); 
      } 

     } 
    }); 


    items.add(new ListViewItem() 
    {{ 
     ThumbnailResource = R.drawable.ic_action_call; 
     Title = listItems[0]; 
     SubTitle = ""; 


    }}); 
     items.add(new ListViewItem() 
    {{ 
     ThumbnailResource = R.drawable.ic_action_call; 
     Title = listItems[1]; 
     SubTitle = ""; 


    }}); 
     items.add(new ListViewItem() 
    {{ 
     ThumbnailResource = R.drawable.ic_action_call; 
     Title = listItems[2]; 
     SubTitle = ""; 


    }}); 

     CustomListViewAdapter adapter = new CustomListViewAdapter(this, items); 
     lv.setAdapter(adapter); 
} 

    //custom methods to open another activity 
public void openItemOneActivity(){ 
    Intent intent = new Intent(this,ItemOneActivity.class); 
    startActivity(intent); 
} 
public void openItemTwoActivity(){ 
    Intent intent = new Intent(this,ItemTwoActivity.class); 
    startActivity(intent); 
} 
public void openItemThreeActivity(){ 
    Intent intent = new Intent(this,ItemThreeActivity.class); 
    startActivity(intent); 
} 

class ListViewItem { 
    public int ThumbnailResource; 
    public String Title; 
    public String SubTitle; 
} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // TODO Auto-generated method stub 
    //getMenuInflater().inflate(R.menu.actionbar, menu); 
    //return super.onCreateOptionsMenu(menu); 
    return true; 


} 


} 

CustomListViewAdapter.java 这是自定义列表适配器文件

package com.frostistudios.circuitbasicspro; 

import java.util.List; 
import com.frostistudios.circuitbasicspro.CbMain.ListViewItem; 
import android.app.Activity; 
import android.content.Context; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.BaseAdapter; 
import android.widget.ImageView; 
import android.widget.ListView; 
import android.widget.TextView; 

public class CustomListViewAdapter extends BaseAdapter 
{ 

LayoutInflater inflater; 
List<ListViewItem> items; 

public CustomListViewAdapter(Activity context, List<ListViewItem> items) { 
    super(); 

    this.items = items; 
    this.inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
} 

@Override 
public int getCount() { 
    // TODO Auto-generated method stub 
    return items.size(); 
} 

@Override 
public Object getItem(int position) { 
    // TODO Auto-generated method stub 
    return null; 
} 

@Override 
public long getItemId(int position) { 
    // TODO Auto-generated method stub 
    return 0; 
} 

@Override 
public View getView(final int position, View convertView, ViewGroup parent) { 
    // TODO Auto-generated method stub 

    ListViewItem item = items.get(position); 

    View vi=convertView; 

    if(convertView==null) 
     vi = inflater.inflate(R.layout.item_row, null); 

     ImageView imgThumbnail = (ImageView) vi.findViewById(R.id.imgThumbnail); 
     TextView txtTitle = (TextView) vi.findViewById(R.id.txtTitle); 
     TextView txtSubtitle = (TextView) vi.findViewById(R.id.txtSubTitle); 

     imgThumbnail.setImageResource(item.ThumbnailResource); 
     txtTitle.setText(item.Title); 
     txtSubtitle.setText(item.SubTitle); 


    return vi; 
} 
} 

，这是一个包含ListView控件设计

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:orientation="horizontal" > 

<ImageView 
    android:id="@+id/imgThumbnail" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentTop="true" 
    android:src="@drawable/ic_action_call" 
    android:layout_marginLeft="10dp" 
    android:layout_marginTop="2dp"/> 

<TextView 
    android:id="@+id/txtTitle" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignTop="@+id/imageView1" 
    android:layout_toRightOf="@+id/imageView1" 
    android:text="Large Text" 
    android:layout_marginLeft="60dp" 
    android:layout_marginTop="6dp"/> 

<TextView 
    android:id="@+id/txtSubTitle" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignBottom="@+id/imageView1" 
    android:layout_alignLeft="@+id/textView1" 
    android:layout_below="@+id/textView1" 
    android:text="" /> 

<ImageView 
    android:id="@+id/imageView2" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentRight="true" 
    android:layout_below="@+id/textView1" 
    android:src="@drawable/arrow" /> 

</RelativeLayout> 

Answer 1

从您的日志猫看，错误似乎是因为您使用的theme不是从compat。检查您的manifest，并确保您使用compat主题。

例（在你的应用ALL acitivities）：

<application 
     //other code 
     android:theme="@style/Theme.AppCompat.Light" > 

或者，如果你只使用于特定活动的操作栏：

<Activity 
     //other code 
     android:theme="@style/Theme.AppCompat.Light" > 

TIPS：

平时要注意log cat，特别是caused by。我从那里知道问题。

Answer 2

这将有很大的帮助，如果您发布的错误输出的XML文件。您的其他活动是否在您的清单中声明？你已经在适配器中有一个上下文，所以你可以在那里设置并尝试。我也认为View vi是不必要的，你可以使用convertView。