我收到以下异常
01-01 22:42:52.184: E/AndroidRuntime(408): FATAL EXCEPTION: main
01-01 22:42:52.184: E/AndroidRuntime(408): android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
01-01 22:42:52.184: E/AndroidRuntime(408): at android.view.ViewRoot.setView(ViewRoot.java:531)
01-01 22:42:52.184: E/AndroidRuntime(408): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
01-01 22:42:52.184: E/AndroidRuntime(408): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
01-01 22:42:52.184: E/AndroidRuntime(408): at android.app.Dialog.show(Dialog.java:241)
01-01 22:42:52.184: E/AndroidRuntime(408): at android.app.AlertDialog$Builder.show(AlertDialog.java:802)
01-01 22:42:52.184: E/AndroidRuntime(408): at com.gaurav.contactmanager.controller.MyContactAdapter$2$1.run(MyContactAdapter.java:103)
01-01 22:42:52.184: E/AndroidRuntime(408): at android.os.Handler.handleCallback(Handler.java:587)
01-01 22:42:52.184: E/AndroidRuntime(408): at android.os.Handler.dispatchMessage(Handler.java:92)
01-01 22:42:52.184: E/AndroidRuntime(408): at android.os.Looper.loop(Looper.java:123)
01-01 22:42:52.184: E/AndroidRuntime(408): at android.app.ActivityThread.main(ActivityThread.java:3683)
01-01 22:42:52.184: E/AndroidRuntime(408): at java.lang.reflect.Method.invokeNative(Native Method)
01-01 22:42:52.184: E/AndroidRuntime(408): at java.lang.reflect.Method.invoke(Method.java:507)
01-01 22:42:52.184: E/AndroidRuntime(408): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
01-01 22:42:52.184: E/AndroidRuntime(408): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
01-01 22:42:52.184: E/AndroidRuntime(408): at dalvik.system.NativeStart.main(Native Method)
在以下代码中：
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder;
if (convertView == null) {
LayoutInflater inflator = context.getLayoutInflater();
convertView = inflator.inflate(R.layout.layout_list_view, null);
viewHolder = new ViewHolder();
viewHolder.contactname = (TextView) convertView
.findViewById(R.id.contactname);
viewHolder.contactnumber = (TextView) convertView
.findViewById(R.id.contactnumber);
viewHolder.contactbadge = (QuickContactBadge) convertView
.findViewById(R.id.contactBadge);
viewHolder.img_logo_fb = (ImageButton) convertView
.findViewById(R.id.img_logo_fb);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
if (contactlist.get(position) == null) {
Log.d(ContactManagerUtil.TAG_ENTER,
"In adapter getView, found: contact null");
return null;
}
viewHolder.contactname.setText(contactlist.get(position).getName());
viewHolder.contactnumber.setText(contactlist.get(position).getNumber());
viewHolder.img_logo_fb.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
Toast.makeText(ContactManagerApplication.context,
"ImageButton is clicked!", Toast.LENGTH_SHORT).show();
// TODO viewTimeLine of this contact
FBExplorer.viewTimeLine();
}
});
final String[] cs = { "View TimeLine", "Post on Wall", "Send a message" };
viewHolder.img_logo_fb
.setOnLongClickListener(new OnLongClickListener() {
public boolean onLongClick(View v) {
// TODO create a dialog box here
if (ContactManagerApplication.context == null) {
Toast.makeText(ContactManagerApplication.context,
"Context is null", Toast.LENGTH_SHORT)
.show();
}
new Handler().postDelayed(new Runnable() {
public void run() {
Log.d("@gaurav", "In run() of handler");
// TODO Auto-generated method stub
AlertDialog.Builder builder = new AlertDialog.Builder(
ContactManagerApplication.context);
builder.setTitle("Choose your option");
builder.setItems(cs,new OnPressOnLongClickListener());
builder.create();
builder.show();
}
}, 1000);
return true;
}// onLongClick ends
});
return convertView;
}
在经历过类似问题的人发帖后，我使用了处理程序，但那个技巧对我不起作用。
这是监听器类
package com.gaurav.contactmanager.controller;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
public class OnPressOnLongClickListener implements OnClickListener {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
}