如果配置文件不存在，生成默认配置文件

feiq.pro

@@ -11,8 +11,6 @@ greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 TARGET = feiq
 TEMPLATE = app
 
-
-
 LIBS += -liconv -lsqlite3
 
 mac{
@@ -58,7 +56,8 @@ SOURCES += main.cpp\
     feiqwin.cpp \
     plugin/unreadchecker.cpp \
     plugin/iplugin.cpp \
-    plugin/rankuser.cpp
+    plugin/rankuser.cpp \
+    settings.cpp
 
 
 HEADERS  += mainwindow.h \
@@ -96,7 +95,8 @@ HEADERS  += mainwindow.h \
     plugin/iplugin.h \
     feiqwin.h \
     plugin/unreadchecker.h \
-    plugin/rankuser.h
+    plugin/rankuser.h \
+    settings.h
 
 FORMS    += mainwindow.ui \
     searchfellowdlg.ui \

feiqwin.cpp

@@ -29,7 +29,7 @@ const FeiqModel *FeiqWin::feiqModel()
     return &(mMainWin->mFeiq.getModel());
 }
 
-QSettings *FeiqWin::settings()
+Settings *FeiqWin::settings()
 {
     return mMainWin->mSettings;
 }

feiqwin.h

@@ -6,6 +6,7 @@
 #include "qsettings.h"
 #include "fellowlistwidget.h"
 #include "feiqlib/feiqmodel.h"
+#include "settings.h"
 
 class MainWindow;
 class IPlugin;
@@ -24,7 +25,7 @@ public:
     SendTextEdit* sendTextEdit();
     FellowListWidget* fellowListWidget();
     const FeiqModel* feiqModel();
-    QSettings* settings();
+    Settings* settings();
 
 public:
     int getUnreadCount();

mainwindow.cpp

@@ -64,7 +64,7 @@ MainWindow::MainWindow(QWidget *parent) :
 
     //加载配置
     auto settingFilePath = QDir::home().filePath(".feiq_setting.ini");
-    mSettings = new QSettings(settingFilePath, QSettings::IniFormat);
+    mSettings = new Settings(settingFilePath, QSettings::IniFormat);
     mSettings->setIniCodec(QTextCodec::codecForName("UTF-8"));
     mTitle = mSettings->value("app/title", "mac飞秋").toString();
     setWindowTitle(mTitle);
@@ -80,6 +80,7 @@ MainWindow::MainWindow(QWidget *parent) :
 MainWindow::~MainWindow()
 {
     mFeiq.stop();
+    mSettings->sync();
     delete mSettings;
     delete mSearchFellowDlg;
     delete mDownloadFileDlg;

mainwindow.h

@@ -7,7 +7,7 @@
 #include "recvtextedit.h"
 #include "feiqlib/feiqengine.h"
 #include "filemanagerdlg.h"
-#include <QSettings>
+#include "settings.h"
 #include <unordered_map>
 #include "chooseemojidlg.h"
 #include <QFileInfo>
@@ -90,7 +90,7 @@ private:
     SearchFellowDlg* mSearchFellowDlg;
     FileManagerDlg* mDownloadFileDlg;
     ChooseEmojiDlg* mChooseEmojiDlg;
-    QSettings* mSettings;
+    Settings* mSettings;
     FeiqEngine mFeiq;
     RecvTextEdit* mRecvTextEdit;
     SendTextEdit* mSendTextEdit;

plugin/unreadchecker.cpp

@@ -24,7 +24,7 @@ void UnreadChecker::init()
     IPlugin::init();
 
     auto settings = mFeiq->settings();
-    mUnreadTimerInterval = settings->value(PLUGIN_NAME"/timer", "0").toInt();
+    mUnreadTimerInterval = settings->value(PLUGIN_NAME"/timer", "600").toInt();
     if (mUnreadTimerInterval > 0)
         mUnreadTimerId = startTimer(mUnreadTimerInterval*1000, Qt::VeryCoarseTimer);
 }

settings.cpp

@@ -0,0 +1,22 @@
+#include "settings.h"
+
+Settings::Settings(const QString &fileName, QSettings::Format format, QObject *parent)
+    :QSettings(fileName, format, parent)
+{
+
+}
+
+QVariant Settings::value(const QString &key, const QVariant &defaultValue)
+{
+    //如果配置中没有该项，则以默认值创建，方便用户知道有那些配置项可用
+    if (!contains(key))
+    {
+        if (!defaultValue.isValid() || defaultValue.isNull())
+            setValue(key, "");//防止非法值
+        else
+            setValue(key, defaultValue);
+        sync();
+    }
+
+    return QSettings::value(key, defaultValue);
+}

settings.h

@@ -0,0 +1,17 @@
+#ifndef SETTINGS_H
+#define SETTINGS_H
+
+#include <QObject>
+#include <QSettings>
+
+class Settings : public QSettings
+{
+public:
+    Settings(const QString &fileName, Format format, QObject *parent = Q_NULLPTR);
+public:
+    //QSettings::value不是虚函数，这里并非多态重载，使用时需注意以Settings指针调用，而非QSettings调用
+    QVariant value(const QString &key, const QVariant &defaultValue = QVariant());
+
+};
+
+#endif // SETTINGS_H