2017-09-05 130 views
0

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> 

回答

0

「總是最後一個ID」 的XML ...請出示您的列表元素的XML。這對我來說聽起來好像你的視圖重疊,並通過xml規則堆疊在一起。

所以如果你的「最後的ID」寫在XML的下面,它與左視圖重疊,很明顯,總是這個視圖會收到點擊並觸發其監聽器。

UPDATE

感謝張貼的XML - 正是因爲我以爲,你LinearLayoutImageView重疊。

如下更改您的LinearLayout:

<LinearLayout 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:layout_toLeftOf="@+id/editImageView" 
    android:orientation="vertical" 
    android:id="@+id/leftSide"> 

添加toLeftOf,以避免重疊,使高度wrap_content。那麼一切都應該工作。

+0

我已添加xml –

+0

的代碼謝謝。但現在它根本不起作用。點擊就沒有反應 –

+0

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