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Menu-note-list
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<!-- 背景图功能 -->
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<item
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android:id="@+id/menu_a1"
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android:title="@string/menu_a1"/>
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<item
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android:id="@+id/menu_a2"
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android:title="@string/menu_a2"/>
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<item
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android:id="@+id/menu_a3"
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android:title="@string/menu_a3"/>
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NotelistActivity
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//背景图功能
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public int mode=-1;
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// 私密模式
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public static int secret_mode = 0;
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// 背景图功能
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getWindow().setBackgroundDrawableResource(R.drawable.a3);
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getWindow().setBackgroundDrawableResource(R.drawable.a2);
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getWindow().setBackgroundDrawableResource(R.drawable.a1);
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// 背景功能
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if(mode==-1)
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menu.findItem(R.id.menu_a1).setVisible(false);
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else if (mode==0)
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menu.findItem(R.id.menu_a2).setVisible(false);
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else if (mode==1)
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menu.findItem(R.id.menu_a3).setVisible(false);
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// 背景功能
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case R.id.menu_a1:{
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mode=-1;
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getWindow().setBackgroundDrawableResource(R.drawable.a1);
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break;
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}
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case R.id.menu_a2:{
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mode=0;
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getWindow().setBackgroundDrawableResource(R.drawable.a2);
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break;
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}
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case R.id.menu_a3:{
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mode=1;
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getWindow().setBackgroundDrawableResource(R.drawable.a3);
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break;
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}
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Values_string
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<!-- 背景图功能 -->
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<string name="menu_a2">Background: a2</string>
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<string name="menu_a1">Background: a1</string>
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<string name="menu_a3">Background: a3</string>
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if(secret_mode == 1)menu.findItem(R.id.menu_secret).setVisible(false); else
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menu.findItem(R.id.menu_quit_secret).setVisible(false);
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public void supportInvalidateOptionsMenu() {
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invalidateOptionsMenu(); // 最终调用 Activity 的原生方法
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}
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case R.id.menu_secret: { // 进入私密模式
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secret_mode = 1; // 先临时设为1（用于对话框标题提示）
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AlertDialog.Builder dialog = new AlertDialog.Builder(NotesListActivity.this);
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dialog.setTitle("重要提醒")
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.setMessage("您确认进入私密模式吗？")
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.setCancelable(false)
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.setPositiveButton("确认", (d, which) -> {
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startAsyncNotesListQuery();
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Toast.makeText(NotesListActivity.this, "您已进入私密模式", Toast.LENGTH_SHORT).show();
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})
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.setNegativeButton("取消", (d, which) -> {
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secret_mode = 0; // 恢复状态
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supportInvalidateOptionsMenu(); // 强制刷新菜单 })
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.show();
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break;}
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case R.id.menu_quit_secret: { // 退出私密模式
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AlertDialog.Builder dialog = new AlertDialog.Builder(NotesListActivity.this);
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dialog.setTitle("重要提醒")
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.setMessage("您确认退出私密模式吗？")
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.setCancelable(false)
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.setPositiveButton("确认", (d, which) -> {
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secret_mode = 0;
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startAsyncNotesListQuery();
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supportInvalidateOptionsMenu(); // 刷新菜单
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Toast.makeText(NotesListActivity.this, "您已退出私密模式", Toast.LENGTH_SHORT).show();
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})
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.setNegativeButton("取消", null) // 无需操作
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.show();
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break;
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}
|
|
|
Values_string
|
|
|
ShareActionProvider
|
|
|
public boolean onCreateOptionsMenu(Menu menu) {
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getMenuInflater().inflate(R.menu.note_list, menu);
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MenuItem enterSecret = menu.findItem(R.id.menu_secret);
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MenuItem quitSecret = menu.findItem(R.id.menu_quit_secret);
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enterSecret.setVisible(secret_mode == 0); // 非私密模式时显示"进入"
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quitSecret.setVisible(secret_mode == 1); // 私密模式时显示"退出"
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return true;
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}
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|
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<!-- 私密模式 -->
|
|
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<string name="Secret">secret model</string>
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|
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<string name="Quit_Secret">quit secret model</string>
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|
|
Menu_Sub_folder
|
|
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<!-- 私密模式 -->
|
|
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<item
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android:id="@+id/menu_secret"
|
|
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android:title="@string/Secret"/>
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|
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<item
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android:id="@+id/menu_quit_secret"
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|
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android:title="@string/Quit_Secret"/>
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|
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// 私密模式
|
|
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public static int secret_mode = 0;
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|
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private void startAsyncNotesListQuery() {
|
|
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String selection = (mCurrentFolderId == Notes.ID_ROOT_FOLDER) ? ROOT_FOLDER_SELECTION
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|
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: NORMAL_SELECTION;
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|
|
if(secret_mode == 0) {
|
|
|
mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null,
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|
|
Notes.CONTENT_NOTE_URI, NoteItemData.PROJECTION, selection, new String[]{
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|
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String.valueOf(mCurrentFolderId)
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|
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}, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC");
|
|
|
}
|
|
|
else{
|
|
|
String str1 = "111";
|
|
|
String [] PROJECTION = new String [] { //定义一个新的PROJECTION数组，只换掉SNIPPET
|
|
|
NoteColumns.ID,
|
|
|
NoteColumns.ALERTED_DATE,
|
|
|
NoteColumns.BG_COLOR_ID,
|
|
|
NoteColumns.CREATED_DATE,
|
|
|
NoteColumns.HAS_ATTACHMENT,
|
|
|
NoteColumns.MODIFIED_DATE,
|
|
|
NoteColumns.NOTES_COUNT,
|
|
|
NoteColumns.PARENT_ID,
|
|
|
// NoteColumns.SNIPPET,
|
|
|
str1,
|
|
|
NoteColumns.TYPE,
|
|
|
NoteColumns.WIDGET_ID,
|
|
|
NoteColumns.WIDGET_TYPE,
|
|
|
};
|
|
|
mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null,
|
|
|
Notes.CONTENT_NOTE_URI, PROJECTION, selection, new String[]{
|
|
|
String.valueOf(mCurrentFolderId)
|
|
|
}, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC");
|
|
|
|
|
|
}
|
|
|
} |
