适配器不能在真实设备上运行

时间:2010-07-16 10:34:21

标签: android

显示模拟器上运行的列表的相同代码无法在移动设备上运行(Motorola Milestone)。我正在使用相同的Android平台(2.1更新)。

收件箱代码

private ArrayList<EmailModel> email_list;


private EmailAdapter email_adapter;

 @Override
 public void onCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);

  try {
   this.email_list = populate_list();
   email_adapter = new EmailAdapter(this, email_list);
   setListAdapter(email_adapter);

  } catch (Exception e) {
   Log.v("Inbox", "Adapting Problem: " + e.toString());
  }
 }

EmailAdapter代码

public class EmailAdapter extends BaseAdapter {



private ArrayList<EmailModel> elements;
private Context c;

public EmailAdapter(Context c, ArrayList<EmailModel> Emails) {

 this.elements = Emails;
    this.c = c;
}
public int getCount() {

    return elements.size();
}

public Object getItem(int position) {

    return elements.get(position);
}

public long getItemId(int id) {

    return id;
}

public void Remove(int id) {
    notifyDataSetChanged();
}

public void Add(EmailModel email) {

 this.elements.add(email);

 notifyDataSetChanged();
}

public View getView(int position, View convertView, ViewGroup parent) {

    LinearLayout rowLayout;
    EmailModel email = elements.get(position);

    if (convertView == null) {
     rowLayout = (LinearLayout) LayoutInflater.from(c).inflate(R.layout.inbox_item, parent, false); 
    } else {
        rowLayout = (LinearLayout) convertView;
    }

 TextView subject_textview = (TextView)rowLayout.findViewById(R.id.subject_textview);
 subject_textview.setText(email.getSubject());

 String body_hint = " - " + email.getBodyHint();

 TextView bodyhint_textview = (TextView)rowLayout.findViewById(R.id.body_hint_textview);
 bodyhint_textview.setText(body_hint);


 String sender_name = get_sender_name(email.getSender());

 TextView sender_name_textview = (TextView)rowLayout.findViewById(R.id.sender_textview);
 sender_name_textview.setText(sender_name);

 TextView date_time_textview = (TextView)rowLayout.findViewById(R.id.date_time_textview); 
 date_time_textview.setText(email.getTime());


    return rowLayout;
}

private String get_sender_name(String from) {

 String[] sender = from.split("<");


String sender_name;

  try {
   sender_name = sender[0];
  } catch (Exception e) {
   sender_name = sender[1];
  }
  return sender_name;
    }}

异常输出

  

07-16 13:15:21.190:VERBOSE / Inbox(429):改编问题:java.lang.ArrayIndexOutOfBoundsException

堆栈跟踪

  

07-16 14:00:49.690:WARN / System.err(703):java.lang.ArrayIndexOutOfBoundsException   07-16 14:00:49.698:WARN / System.err(703):at com.anubis.mail.Inbox.populate_list(Inbox.java:237)   07-16 14:00:49.698:WARN / System.err(703):at com.anubis.mail.Inbox.onCreate(Inbox.java:69)   07-16 14:00:49.698:WARN / System.err(703):at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)   07-16 14:00:49.698:WARN / System.err(703):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)   07-16 14:00:49.706:WARN / System.err(703):在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)   07-16 14:00:49.706:WARN / System.err(703):在android.app.ActivityThread.access $ 2200(ActivityThread.java:119)   07-16 14:00:49.706:WARN / System.err(703):在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1863)   07-16 14:00:49.706:WARN / System.err(703):在android.os.Handler.dispatchMessage(Handler.java:99)   07-16 14:00:49.706:WARN / System.err(703):在android.os.Looper.loop(Looper.java:123)   07-16 14:00:49.706:WARN / System.err(703):在android.app.ActivityThread.main(ActivityThread.java:4363)   07-16 14:00:49.706:WARN / System.err(703):at java.lang.reflect.Method.invokeNative(Native Method)   07-16 14:00:49.706:WARN / System.err(703):at java.lang.reflect.Method.invoke(Method.java:521)   07-16 14:00:49.706:WARN / System.err(703):at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:860)   07-16 14:00:49.706:WARN / System.err(703):at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)   07-16 14:00:49.706:WARN / System.err(703):at dalvik.system.NativeStart.main(Native Method)

2 个答案:

答案 0 :(得分:1)

堆栈跟踪告诉我们您的方法Inbox.javapopulate_list()的第237行发生了此异常。这不是适配器的问题。由于您未提供populate_list方法的源代码,因此我们无法准确告诉您问题所在。

所以,请看Inbox.java的第237行!

答案 1 :(得分:0)

我会将登录信息放入get_sender_name函数中。对我来说,sender_name = sender[0];可能是错误但sender_name = sender[1];没有错误,这对我没有多大意义。

此外,您应该使用Log.e代替Log.v来处理错误。 Log.v用于传达不重要的信息,但只描述程序的运行方式。