android - 合并适配器 header 崩溃

Question

我在使用 CWAC 合并适配器时遇到问题:https://github.com/commonsguy/cwac-merge

当我一个接一个地添加 View 和适配器时，这工作正常，但是当我尝试一个接一个地添加两个 header 时，它似乎崩溃了。这是我所做的:

这是第一个标题的布局:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    android:weightSum="7"
    android:baselineAligned="false" >

    <LinearLayout
        android:id="@+id/unsynced_layoutt"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="6"
        android:orientation="vertical" >

        <View
            android:layout_width="match_parent"
            android:layout_height="3dp"
            android:background="@color/greenish" />

        <TextView
            android:id="@+id/unsynced_txt"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="10dp"
            android:gravity="center"
            android:text="@string/unsynced_txt" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:text="@string/lorem_ipsum" />

        <View
            android:layout_width="match_parent"
            android:layout_height="3dp"
            android:layout_gravity="bottom"
            android:background="@color/greenish" />
    </LinearLayout>

    <LinearLayout
        android:orientation="vertical"
        android:layout_weight="1"
        android:id="@+id/sync_close_notification"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:background="@color/grey_bcknd">

        <ImageButton
            android:id="@+id/menu_btn"
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:layout_gravity="center"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="15dp"
            android:background="@null"
            android:contentDescription="@string/something"
            android:src="@drawable/notification_close_x_green" />
    </LinearLayout>

</LinearLayout>

第二个标题的布局:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@color/grey_bcknd"
    android:orientation="vertical" >

    <View
        android:id="@+id/top_line"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:alpha="0.25"
        android:background="@color/grey_line" />

    <TextView
        android:id="@+id/receipt_header_txt"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/top_line"
        android:layout_marginLeft="10dp"
        android:text="@string/active_folders"
        android:textColor="#B4AA9E" />

    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_alignParentBottom="true"
        android:layout_below="@+id/receipt_header_txt"
        android:alpha="0.25"
        android:background="@color/grey_line" />

</RelativeLayout>

这是我尝试物理添加它的地方:

all_adapter = new MergeAdapter();
        final View notification = inflater
                .inflate(R.layout.unsynced_layout, null);
        TextView notification_txt = (TextView) notification.findViewById(R.id.unsynced_txt);
        notification_txt.setText("You have "+unsynced_nr+" unsynced items");
        all_adapter.addView(notification_txt);

        for(int i=0;i<dates.size();i++){
            System.out.println("HERE "+i);
            View header1 = inflater
                    .inflate(R.layout.receipt_list_header, null);
            TextView date_header_txt = (TextView) header1.findViewById(R.id.receipt_header_txt);
            date_header_txt.setText(dates.get(i));
            all_adapter.addView(header1);
            ReceiptDataSource recs1 = new ReceiptDataSource(globalView.getContext());
            recs1.open();
            ArrayList<Receipt> currentReceipts = recs.findReceiptsByDate(dates.get(i), folder_id);
            recs1.close();

            //ReceiptAdapter folder_receipts = new ReceiptAdapter(getActivity(), R.layout.receipt_item, R.layout.receipt_incomplete_item, currentReceipts);
            ReceiptCustomAdapter folder_receipts = new ReceiptCustomAdapter(globalView.getContext(), R.layout.receipt_pager,
                    currentReceipts, getActivity().getSupportFragmentManager());
            all_adapter.addAdapter(folder_receipts);
        }

和堆栈跟踪:

08-06 11:54:15.558: E/AndroidRuntime(20408): FATAL EXCEPTION: main
08-06 11:54:15.558: E/AndroidRuntime(20408): java.lang.ClassCastException: android.widget.LinearLayout$LayoutParams cannot be cast to android.widget.AbsListView$LayoutParams
08-06 11:54:15.558: E/AndroidRuntime(20408):    at android.widget.ListView.measureScrapChild(ListView.java:1170)
08-06 11:54:15.558: E/AndroidRuntime(20408):    at android.widget.ListView.measureHeightOfChildren(ListView.java:1252)

如果我评论这行:

all_adapter.addView(notification_txt);

代码不再崩溃。

非常感谢任何建议，谢谢。

Answer 1

您遇到此问题是因为 MergeAdapter 需要 AbsListView.LayoutParams。试试这个:

final View notification = inflater.inflate(R.layout.unsynced_layout, null);
TextView notification_txt = (TextView) notification.findViewById(R.id.unsynced_txt);
notification_txt.setText("You have "+unsynced_nr+" unsynced items");
AbsListView.LayoutParams layoutParams = new AbsListView.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
notification_txt.setLayoutParams(layoutParams);
all_adapter.addView(notification_txt);

但是，如果您只是尝试将整个 View 添加到您的合并适配器，那么您可以说:all_adapter.addView(notification_txt); 而不是:all_adapter.addView(notification) ;