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我有一個列表。在列表中每個項目分爲兩個視圖。每個視圖都有獨立的監聽器。問題是監聽器使用錯誤的id作爲意圖。爲了誇大列表，我從遊標適配器獲得了一個數據。在日誌中，我看到單擊它後，最後一個元素的ID不是被單擊的元素的ID。觸發錯誤的onclick監聽器
我需要的意圖用戶發送到活動用正確的ID
代碼
public class ListCursorAdapter extends CursorAdapter {
private static final String TAG = "myLogs";
/**
* Constructs a new {@link ListCursorAdapter}.
*
* @param context The context
* @param c The cursor from which to get the data.
*/
public ListCursorAdapter(Context context, Cursor c) {
super(context, c, 0 /* flags */);
}
/**
* Makes a new blank list item view. No data is set (or bound) to the views yet.
*
* @param context app context
* @param cursor The cursor from which to get the data. The cursor is already
* moved to the correct position.
* @param parent The parent to which the new view is attached to
* @return the newly created list item view.
*/
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
// Inflate a list item view using the layout specified in list_item.xml
return LayoutInflater.from(context).inflate(R.layout.list_item, parent, false);
}
/**
* This method binds the pet data (in the current row pointed to by cursor) to the given
* list item layout. For example, the name for the current pet can be set on the name TextView
* in the list item layout.
*
* @param view Existing view, returned earlier by newView() method
* @param context app context
* @param cursor The cursor from which to get the data. The cursor is already moved to the
* correct row.
*/
@Override
public void bindView(View view, Context context, final Cursor cursor) {
// Find individual views that we want to modify in the list item layout
final TextView nameTextView = (TextView) view.findViewById(R.id.name);
final TextView summaryTextView = (TextView) view.findViewById(R.id.summary);
// Find the columns of pet attributes that we're interested in
int nameColumnIndex = cursor.getColumnIndex(ListEntry.COLUMN_ITEM_NAME);
int breedColumnIndex = cursor.getColumnIndex(ListEntry.COLUMN_ITEM_DESCRIPTION);
// Read the pet attributes from the Cursor for the current pet
String petName = cursor.getString(nameColumnIndex);
String petBreed = cursor.getString(breedColumnIndex);
// If the pet breed is empty string or null, then use some default text
// that says "Unknown breed", so the TextView isn't blank.
if (TextUtils.isEmpty(petBreed)) {
petBreed = context.getString(R.string.unknown_description);
}
// Update the TextViews with the attributes for the current pet
nameTextView.setText(petName);
summaryTextView.setText(petBreed);
//
// view.findViewById(R.id.editImageView).setOnClickListener(
// new View.OnClickListener() {
// @Override
// public void onClick(View v) {
// Log.v(TAG, "--- WE ARE IN IMAGEVIEW LISTENER ---");
//
// Intent intent = new Intent(v.getContext(), EditorActivity.class);
//
// // Form the content URI that represents the specific pet that was clicked on,
// // by appending the "id" (passed as input to this method) onto the
// // {@link PetEntry#CONTENT_URI}.
// // For example, the URI would be "content://com.example.android.pets/pets/2"
// // if the pet with ID 2 was clicked on.
// Uri currentPetUri = ContentUris.withAppendedId(
// ListContract.ListEntry.CONTENT_URI,
// cursor.getInt(cursor.getColumnIndex(ListEntry._ID))
// );
//
//
// Log.v(TAG, "--- CONTENT URI " + cursor.getInt(cursor.getColumnIndex(ListEntry._ID)));
//
// // Set the URI on the data field of the intent
// intent.setData(currentPetUri);
//
// // Launch the {@link EditorActivity} to display the data for the current pet.
// v.getContext().startActivity(intent);
// }
// }
// );
//
// view.findViewById(R.id.leftSide).setOnClickListener(
// new View.OnClickListener() {
// @Override
// public void onClick(View v) {
// Log.v(TAG, "--- WE ARE IN LEFTSIDE LISTENER ---");
//
// nameTextView.setPaintFlags(nameTextView.getPaintFlags()| Paint.STRIKE_THRU_TEXT_FLAG);
// summaryTextView.setPaintFlags(summaryTextView.getPaintFlags()| Paint.STRIKE_THRU_TEXT_FLAG);
//
// }
// }
// );
Boolean completed = cursor.getInt(cursor.getColumnIndex(ListEntry.COLUMN_ITEM_COMPLETED)) == 1;
if (completed) {
setCompleted(view);
}
}
//BaseAdapter -> getView;
public void setCompleted(View view) {
}
}
及主要活動
public class CatalogActivity extends AppCompatActivity implements
LoaderManager.LoaderCallbacks<Cursor> {
private static final String TAG = "myLogs";
/** Identifier for the pet data loader */
private static final int LIST_LOADER = 0;
/** Adapter for the ListView */
ListCursorAdapter mCursorAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_catalog);
// Changing font
// typefaceName = Typeface.createFromAsset(getAssets(), "Roboto-Regular.ttf");
// typefaceDescription = Typeface.createFromAsset(getAssets(), "OpenSans-Italic.ttf");
//
// Typeface titleTypeface = Typeface.createFromAsset(getAssets(), "Roboto-Regular.ttf");
// Typeface descriptionTypeface = Typeface.createFromAsset(getAssets(), "OpenSans-Italic.ttf");
// TextView titleTextView = (TextView) findViewById(R.id.name);
// TextView descriptionTextView = (TextView) findViewById(R.id.summary);
// Log.v(TAG, "--- FONT IS ---" + titleTypeface);
// if (titleTextView == null){
// Log.v(TAG, "*** TEXTVIEW IS EMPTY ***");
// }
// titleTextView.setTypeface(titleTypeface);
// descriptionTextView.setTypeface(descriptionTypeface);
Log.v(TAG, "--- WE ARE IN CATALOG ACTIVITY ---");
// Setup FAB to open EditorActivity
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(CatalogActivity.this, EditorActivity.class);
startActivity(intent);
}
});
// Find the ListView which will be populated with the list data
ListView listListView = (ListView) findViewById(R.id.list);
// Find and set empty view on the ListView, so that it only shows when the list has 0 items.
View emptyView = findViewById(R.id.empty_view);
listListView.setEmptyView(emptyView);
// Setup an Adapter to create a list item for each row of list data in the Cursor.
// There is no items data yet (until the loader finishes) so pass in null for the Cursor.
mCursorAdapter = new ListCursorAdapter(this, null);
listListView.setAdapter(mCursorAdapter);
// Setup the item click listener
listListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
ShoppingListBdHelper helper = new ShoppingListBdHelper(view.getContext());
if (helper.setCompleted(id)) {
mCursorAdapter.setCompleted(view);
}
if (view.findViewById(R.id.editImageView).isSelected()){
Log.v(TAG, "++++++++ IF WORKS");
} else if (view.findViewById(R.id.leftSide).isSelected()){
Log.v(TAG, "+++++++ ELSE IF WORKS");
}
}
});
// Kick off the loader
getSupportLoaderManager().initLoader(LIST_LOADER, null, this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu options from the res/menu/menu_catalog.xml file.
// This adds menu items to the app bar.
getMenuInflater().inflate(R.menu.menu_catalog, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// User clicked on a menu option in the app bar overflow menu
switch (item.getItemId()) {
// Respond to a click on the "Insert dummy data" menu option
case R.id.action_share_button:
shareButton(mCursorAdapter.getCursor());
return true;
// Respond to a click on the "Delete all entries" menu option
case R.id.action_delete_all_entries:
deleteAllItems();
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* Share button
*/
private void shareButton(Cursor cursor) {
Log.v(TAG, "--- WE ARE IN SHARE BUTTON METHOD ---");
List<String> test;
test = new ArrayList<String>();
cursor.moveToFirst();
while(!cursor.isAfterLast()) {
Log.d(TAG, "field: " + cursor.getString(cursor.getColumnIndex(ListContract.ListEntry.COLUMN_ITEM_NAME)));
test.add(cursor.getString(cursor.getColumnIndex(ListContract.ListEntry.COLUMN_ITEM_NAME)) + " - " + cursor.getString(cursor.getColumnIndex(ListContract.ListEntry.COLUMN_ITEM_DESCRIPTION))); //add the item
// test.add(cursor.getString(cursor.getColumnIndex(ListContract.ListEntry.COLUMN_ITEM_DESCRIPTION))); //add the item
cursor.moveToNext();
}
cursor.moveToFirst();
cursor.close();
// for (String comma :)
Log.v(TAG, "--- OUR LIST INCLUDES: " + test.toString());
Intent myIntent = new Intent();
myIntent.setAction(Intent.ACTION_SEND);
myIntent.putStringArrayListExtra("test", (ArrayList<String>) test);
myIntent.putExtra(android.content.Intent.EXTRA_TEXT, test.toString());
Log.v(TAG, "--- INTENT EXTRAS ARE: " + myIntent.getExtras());
myIntent.setType("text/plain");
startActivity(Intent.createChooser(myIntent, "Share using"));
}
/**
* Helper method to delete all list in the database.
*/
private void deleteAllItems() {
Log.v(TAG, "Сработал метод удаления всех данных");
long rowsDeleted = getContentResolver().delete(ListContract.ListEntry.CONTENT_URI, null, null);
Log.v("CatalogActivity", rowsDeleted + " rows deleted from list database");
}
@Override
public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
Log.v(TAG, "Начал работать loader cursor");
// Define a projection that specifies the columns from the table we care about.
String[] projection = {
ListContract.ListEntry._ID,
ListContract.ListEntry.COLUMN_ITEM_NAME,
ListContract.ListEntry.COLUMN_ITEM_DESCRIPTION,
ListContract.ListEntry.COLUMN_ITEM_COMPLETED
};
// This loader will execute the ContentProvider's query method on a background thread
return new CursorLoader(this, // Parent activity context
ListContract.ListEntry.CONTENT_URI, // Provider content URI to query
projection, // Columns to include in the resulting Cursor
null, // No selection clause
null, // No selection arguments
null); // Default sort order
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
// Update {@link ListCursorAdapter} with this new cursor containing updated pet data
mCursorAdapter.swapCursor(data);
Log.v(TAG, "Cursor adapter загрузился");
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
// Callback called when the data needs to be deleted
mCursorAdapter.swapCursor(null);
}
}
XML
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".CatalogActivity">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/list"
/>
<!-- Empty view for the list -->
<RelativeLayout
android:id="@+id/empty_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true">
<ImageView
android:id="@+id/empty_shelter_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:src="@drawable/ic_empty_shelter"/>
<TextView
android:id="@+id/empty_title_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/empty_shelter_image"
android:layout_centerHorizontal="true"
android:fontFamily="sans-serif-medium"
android:paddingTop="16dp"
android:text="@string/empty_view_title_text"
android:textAppearance="?android:textAppearanceMedium"/>
<TextView
android:id="@+id/empty_subtitle_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/empty_title_text"
android:layout_centerHorizontal="true"
android:fontFamily="sans-serif"
android:paddingTop="8dp"
android:text="@string/empty_view_subtitle_text"
android:textAppearance="?android:textAppearanceSmall"
android:textColor="#A2AAB0"/>
</RelativeLayout>
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_margin="@dimen/fab_margin"
android:src="@drawable/ic_add_pet"/>
項目
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="@dimen/activity_margin">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="@+id/leftSide">
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:fontFamily="sans-serif-medium"
android:textAppearance="?android:textAppearanceMedium"
android:textColor="#2B3D4D"
android:layout_alignParentLeft="true" />
<TextView
android:id="@+id/summary"
android:layout_below="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="sans-serif"
android:textAppearance="?android:textAppearanceSmall"
android:textColor="#AEB6BD" />
</LinearLayout>
<ImageView
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_margin="5dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="sans-serif"
android:id="@+id/editImageView"
android:textAppearance="?android:textAppearanceSmall"
android:src="@drawable/ic_edit"
/>
</RelativeLayout>
我已添加xml –
的代碼謝謝。但現在它根本不起作用。點擊就沒有反應 –
我完全不理解你的實現。如果你永遠不會使用.setSelected（），那麼想用.isSelected（）表達什麼？ （也許我錯過了）。有很多註釋行，我不清楚代碼應該做什麼。你可以嘗試清理一下嗎？什麼運行，什麼不是？一般來說，你爲什麼不在適配器內創建你的點擊監聽器？在每個項目上，當你綁定它？會更容易處理，哪些項目已被點擊... – Grisgram