From 99076f229e6093ced090c5b20b8216dc289e6145 Mon Sep 17 00:00:00 2001 From: fxk <1526369056@qq.com> Date: Wed, 19 Apr 2023 22:22:33 +0800 Subject: [PATCH] =?UTF-8?q?=E9=80=82=E9=85=8D=E5=99=A8?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../net/micode/notes/ui/NotesListAdapter.java | 53 +++++++++++++++---- 1 file changed, 42 insertions(+), 11 deletions(-) diff --git a/src/Notes-master/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java b/src/Notes-master/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java index 51c9cb9..d580932 100644 --- a/src/Notes-master/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java +++ b/src/Notes-master/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java @@ -31,56 +31,72 @@ import java.util.HashSet; import java.util.Iterator; +//便签列表适配器 +//实现鼠标和编辑便签链接的桥梁 public class NotesListAdapter extends CursorAdapter { private static final String TAG = "NotesListAdapter"; - private Context mContext; - private HashMap mSelectedIndex; - private int mNotesCount; - private boolean mChoiceMode; + private Context mContext; + private HashMap mSelectedIndex; //所选索引 + private int mNotesCount; //便签数量 + private boolean mChoiceMode; //选择模式 public static class AppWidgetAttribute { public int widgetId; public int widgetType; }; + //初始化NotesListAdapter public NotesListAdapter(Context context) { - super(context, null); - mSelectedIndex = new HashMap(); + super(context, null); //置空父类对象 + mSelectedIndex = new HashMap(); //更新哈希表 mContext = context; mNotesCount = 0; } @Override + //新建视图来保存光标指向内容 public View newView(Context context, Cursor cursor, ViewGroup parent) { + //新建项目选项 return new NotesListItem(context); } @Override + //绑定视图 将视图于光标进行捆绑 public void bindView(View view, Context context, Cursor cursor) { if (view instanceof NotesListItem) { + //检查视图是否为NotesListItem类型 + //是的话则创建一个新的 NoteItemData 对象并使用它来绑定视图 NoteItemData itemData = new NoteItemData(context, cursor); ((NotesListItem) view).bind(context, itemData, mChoiceMode, isSelectedItem(cursor.getPosition())); } } + //设置勾选框 public void setCheckedItem(final int position, final boolean checked) { + //根据position，checked来设置下标 mSelectedIndex.put(position, checked); + //刷新activity notifyDataSetChanged(); } + //判断是否处于选择模式 public boolean isInChoiceMode() { return mChoiceMode; } + //设置选择模式 public void setChoiceMode(boolean mode) { mSelectedIndex.clear(); mChoiceMode = mode; } + //选择全部选项 public void selectAll(boolean checked) { + //获取光标位置 Cursor cursor = getCursor(); for (int i = 0; i < getCount(); i++) { + //遍历所有光标可用的位置在判断为便签类型之后勾选单项框 if (cursor.moveToPosition(i)) { if (NoteItemData.getNoteType(cursor) == Notes.TYPE_NOTE) { setCheckedItem(i, checked); @@ -89,14 +105,15 @@ public class NotesListAdapter extends CursorAdapter { } } + //建立选择项的下标列表 public HashSet getSelectedItemIds() { - HashSet itemSet = new HashSet(); - for (Integer position : mSelectedIndex.keySet()) { - if (mSelectedIndex.get(position) == true) { + HashSet itemSet = new HashSet();//哈希表 + for (Integer position : mSelectedIndex.keySet()) {//遍历 mSelectedIndex 变量中的所有位置 + if (mSelectedIndex.get(position) == true) {//如果光标位置为true Long id = getItemId(position); if (id == Notes.ID_ROOT_FOLDER) { Log.d(TAG, "Wrong item id, should not happen"); - } else { + } else {//否则添加到itemSet中 itemSet.add(id); } } @@ -105,19 +122,23 @@ public class NotesListAdapter extends CursorAdapter { return itemSet; } + //建立桌面Widget的选项表 public HashSet getSelectedWidget() { HashSet itemSet = new HashSet(); for (Integer position : mSelectedIndex.keySet()) { if (mSelectedIndex.get(position) == true) { Cursor c = (Cursor) getItem(position); if (c != null) { + //光标非空则建立widget并编辑下标和类型 AppWidgetAttribute widget = new AppWidgetAttribute(); NoteItemData item = new NoteItemData(mContext, c); widget.widgetId = item.getWidgetId(); widget.widgetType = item.getWidgetType(); + //添加到itemSet itemSet.add(widget); /** * Don't close cursor here, only the adapter could close it + * 不要在此处关闭光标，只有适配器可以关闭它 */ } else { Log.e(TAG, "Invalid cursor"); @@ -128,11 +149,14 @@ public class NotesListAdapter extends CursorAdapter { return itemSet; } + //获取选项个数 public int getSelectedCount() { + //获取下标值 Collection values = mSelectedIndex.values(); - if (null == values) { + if (null == values) { //values为空返回0 return 0; } + //初始化 Iterator iter = values.iterator(); int count = 0; while (iter.hasNext()) { @@ -143,12 +167,16 @@ public class NotesListAdapter extends CursorAdapter { return count; } + //判断是否被全部选中 public boolean isAllSelected() { int checkedCount = getSelectedCount(); + //返回比较是否检查数等于便签数且不为0 return (checkedCount != 0 && checkedCount == mNotesCount); } + //判断是否为选项表 public boolean isSelectedItem(final int position) { + //获取的光标位置是否为空 if (null == mSelectedIndex.get(position)) { return false; } @@ -156,17 +184,20 @@ public class NotesListAdapter extends CursorAdapter { } @Override + //在适配器内容发生更改时调用计算便签数量 protected void onContentChanged() { super.onContentChanged(); calcNotesCount(); } @Override + //光标更改时计算便签数量 public void changeCursor(Cursor cursor) { super.changeCursor(cursor); calcNotesCount(); } + //计算便签数量 private void calcNotesCount() { mNotesCount = 0; for (int i = 0; i < getCount(); i++) {