TextViewsカスタムListViewレイアウトでいくつかのテキストを設定しようとしています。私はListFragmentBTWを使用しています。実際のListViewレイアウトを返しOnCreateView、カスタム レイアウト ind を膨らませていOnActivityCreatedます。これが進むべき道であるかどうかは本当にわかりません。
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.activity_db_list_view, container, false);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
LayoutInflater inflater = (LayoutInflater) getActivity().getSystemService(getActivity().LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.activity_db_row, null, true);
TextView tv = (TextView) rowView.findViewById(R.id.lv_tprice_unit);
tv.setText("bla");
final String[] fromColumn = new String[]{DbAdapter.KEY_DATE, DbAdapter.KEY_AMOUNT, DbAdapter.KEY_MILEAGE, DbAdapter.KEY_PRICE, DbAdapter.KEY_TOTAL_PRICE};
final int[] toViews = new int[]{R.id.lv_date, R.id.lv_amount, R.id.lv_mileage, R.id.lv_lprice, R.id.lv_tprice};
// Create an empty adapter we will use to display the loaded data.
// We pass null for the cursor, then update it in onLoadFinished()
mAdapter = new SimpleCursorAdapter(getActivity(),
R.layout.activity_db_row, null,
fromColumn, toViews, 0);
setListAdapter(mAdapter);
// Prepare the loader. Either re-connect with an existing one,
// or start a new one.
getLoaderManager().initLoader(0, null, this);
}
// Called when a new Loader needs to be created
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
// Now create and return a CursorLoader that will take care of
// creating a Cursor for the data being displayed.
return new CursorLoader(getActivity(), DbAdapter.CONTENT_URI,
PROJECTION, SELECTION, null, DbAdapter.KEY_ID + " DESC");
}
// Called when a previously created loader has finished loading
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
// Swap the new cursor in. (The framework will take care of closing the
// old cursor once we return.)
mAdapter.swapCursor(data);
}
// Called when a previously created loader is reset, making the data unavailable
public void onLoaderReset(Loader<Cursor> loader) {
// This is called when the last Cursor provided to onLoadFinished()
// above is about to be closed. We need to make sure we are no
// longer using it.
mAdapter.swapCursor(null);
}
何も得られませんNullPointerExceptionが、どちらにも変化はありませんTextView。私は何が欠けていますか？
レイアウト ファイル:
ListView メイン:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/listContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
style="@style/AppBaseThemeCardBG">
<ListView
android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:drawSelectorOnTop="false"
android:divider="#00000000"/>
</FrameLayout>
カスタムレイアウト:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
style="@style/AppBaseThemeCardBG"
xmlns:tools="http://schemas.android.com/tools">
<LinearLayout
style="@style/nowCardStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="@dimen/card_layout_padding"
tools:ignore="UselessParent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingLeft="@dimen/page_margin"
android:paddingRight="@dimen/page_margin">
<TextView
android:id="@+id/lv_date"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="4"
android:fontFamily="sans-serif-light"
android:gravity="left"
android:padding="@dimen/activity_listview_padding"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textIsSelectable="false"/>
<TextView
android:id="@+id/lv_tprice"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="5"
android:fontFamily="sans-serif-light"
android:gravity="right"
android:padding="@dimen/activity_listview_padding"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textIsSelectable="false"/>
<TextView
android:id="@+id/lv_tprice_unit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="2"
android:fontFamily="sans-serif-light"
android:gravity="left"
android:padding="@dimen/activity_listview_padding"
android:text="@string/money_unit"
android:textAppearance="?android:attr/textAppearanceMedium"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingLeft="@dimen/page_margin"
android:paddingRight="@dimen/page_margin">
<TextView
android:id="@+id/lv_mileage"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="2"
android:fontFamily="sans-serif-light"
android:gravity="right"
android:padding="@dimen/activity_listview_padding"
android:textIsSelectable="false"/>
<TextView
android:id="@+id/lv_mileage_unit1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="2"
android:fontFamily="sans-serif-light"
android:gravity="left"
android:padding="@dimen/activity_listview_padding"
android:text="@string/mileage_unit"/>
<TextView
android:id="@+id/lv_lprice"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="5"
android:fontFamily="sans-serif-light"
android:gravity="right"
android:padding="@dimen/activity_listview_padding"
android:textIsSelectable="false"/>
<TextView
android:id="@+id/lv_lprice_unit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="2"
android:fontFamily="sans-serif-light"
android:gravity="left"
android:padding="@dimen/activity_listview_padding"
android:text="@string/lprice_unit"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingLeft="@dimen/page_margin"
android:paddingRight="@dimen/page_margin">
<TextView
android:id="@+id/lv_distdif"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="2"
android:fontFamily="sans-serif-light"
android:gravity="right"
android:maxLines="1"
android:textIsSelectable="false"/>
<TextView
android:id="@+id/lv_mileage_unit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="2"
android:fontFamily="sans-serif-light"
android:gravity="left"
android:padding="@dimen/activity_listview_padding"
android:textIsSelectable="false"/>
<TextView
android:id="@+id/lv_amount"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="5"
android:fontFamily="sans-serif-light"
android:gravity="right"
android:padding="@dimen/activity_listview_padding"
android:textIsSelectable="false"/>
<TextView
android:id="@+id/lv_amount_unit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="2"
android:fontFamily="sans-serif-light"
android:gravity="left"
android:padding="@dimen/activity_listview_padding"
android:text="@string/amount_unit"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>