我有一个FragmentActivity
使用SherlockActionBar
和支持库v4。上面的`onContextItemSelected`上的崩溃
主布局中有一个ListFragment
。点击列表项目打开一个新的ListFragment
,部分滑入视图。如果您长按“THOSE”列表项目,上下文菜单将显示两个选项。第一个选项显示dialog
与EditText
框和Button
“它试图打开时崩溃。
如果我删除EditText
行和Button
行(除非您声明它们的地址为findViewById
),则会弹出一个空的dialog
。但由于某种原因,它不喜欢对话框的内容(按钮/框)。任何人都可以看看LogCat,看看为什么?该线是null
是setText
线。如果我将它注释掉,按钮的onClickListner
将变为null
。
这是代码和logcat。
public boolean onContextItemSelected(android.view.MenuItem item) {
if (item.getGroupId() == 2) {
switch (item.getItemId()) {
case 1:
case 1:
if (Rateit.isUserLoggedIn == true) {
final Dialog dialog = new Dialog(getActivity());
dialog.setTitle("Edit Review");
dialog.show();
final EditText etEdit = (EditText) dialog
.findViewById(R.id.etEditReview);
etEdit.setText(reviewWords);
Button bInsert = (Button) dialog.findViewById(R.id.bInsert);
bInsert.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
clickedReview = etEdit.getText().toString();
if (clickedReview.equals("")) {
Toast.makeText(getActivity(),
"Please add something first.",
Toast.LENGTH_SHORT).show();
} else {
newReview = etEdit.getText().toString();
new EditCommentTask().execute();
InputMethodManager imm = (InputMethodManager) getActivity()
.getSystemService(
Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(
etEdit.getWindowToken(), 0);
dialog.dismiss();
}
}
});
}
return true;
的logcat:
03-06 10:29:08.527: E/AndroidRuntime(10438): FATAL EXCEPTION: main
03-06 10:29:08.527: E/AndroidRuntime(10438): java.lang.NullPointerException
03-06 10:29:08.527: E/AndroidRuntime(10438): at com.---.---.RateReviewFragment.onContextItemSelected(RateReviewFragment.java:901)
03-06 10:29:08.527: E/AndroidRuntime(10438): at android.support.v4.app.FragmentManagerImpl.dispatchContextItemSelected(FragmentManager.java:1933)
03-06 10:29:08.527: E/AndroidRuntime(10438): at android.support.v4.app.FragmentActivity.onMenuItemSelected(FragmentActivity.java:360)
03-06 10:29:08.527: E/AndroidRuntime(10438): at com.actionbarsherlock.app.SherlockFragmentActivity.onMenuItemSelected(SherlockFragmentActivity.java:211)
03-06 10:29:08.527: E/AndroidRuntime(10438): at com.android.internal.policy.impl.PhoneWindow$DialogMenuCallback.onMenuItemSelected(PhoneWindow.java:3633)
03-06 10:29:08.527: E/AndroidRuntime(10438): at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735)
03-06 10:29:08.527: E/AndroidRuntime(10438): at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:149)
03-06 10:29:08.527: E/AndroidRuntime(10438): at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874)
03-06 10:29:08.527: E/AndroidRuntime(10438): at com.android.internal.view.menu.MenuDialogHelper.onClick(MenuDialogHelper.java:167)
03-06 10:29:08.527: E/AndroidRuntime(10438): at com.android.internal.app.AlertController$AlertParams$3.onItemClick(AlertController.java:941)
03-06 10:29:08.527: E/AndroidRuntime(10438): at android.widget.AdapterView.performItemClick(AdapterView.java:298)
03-06 10:29:08.527: E/AndroidRuntime(10438): at android.widget.AbsListView.performItemClick(AbsListView.java:1100)
03-06 10:29:08.527: E/AndroidRuntime(10438): at android.widget.AbsListView$PerformClick.run(AbsListView.java:2749)
03-06 10:29:08.527: E/AndroidRuntime(10438): at android.widget.AbsListView$1.run(AbsListView.java:3423)
03-06 10:29:08.527: E/AndroidRuntime(10438): at android.os.Handler.handleCallback(Handler.java:725)
03-06 10:29:08.527: E/AndroidRuntime(10438): at android.os.Handler.dispatchMessage(Handler.java:92)
03-06 10:29:08.527: E/AndroidRuntime(10438): at android.os.Looper.loop(Looper.java:137)
03-06 10:29:08.527: E/AndroidRuntime(10438): at android.app.ActivityThread.main(ActivityThread.java:5226)
03-06 10:29:08.527: E/AndroidRuntime(10438): at java.lang.reflect.Method.invokeNative(Native Method)
03-06 10:29:08.527: E/AndroidRuntime(10438): at java.lang.reflect.Method.invoke(Method.java:511)
03-06 10:29:08.527: E/AndroidRuntime(10438): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
03-06 10:29:08.527: E/AndroidRuntime(10438): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
03-06 10:29:08.527: E/AndroidRuntime(10438): at dalvik.system.NativeStart.main(Native Method)
你正在创建一个**默认的**'Dialog'并在其中寻找一些视图,你预期会发生什么?您可能在对话框中缺少一个'setContentView'来设置包含您所寻找的小部件的布局文件。 – Luksprog 2013-03-06 18:48:34
这是一个丑陋,丑陋的错误。我有一条被删除的行,'dialog.setContentView(R.layout.editreview);'我把它放回去了,现在它可以工作。继续,并做出正确的答案... – KickingLettuce 2013-03-06 18:54:25
是的,我已经upvoted一个评论和你的答案。但从技术上来说@卢克斯普罗克的答案更具体到发生了什么,并等待他这样做。如果没有,我会接受你的。 – KickingLettuce 2013-03-06 20:05:57