Android Common Tool class Sputil, you can modify the default SP file path

Reference:

1. Change the sharedpreferences storage path using the Java reflection mechanism Singleton1900

2. Android Rapid Development series 10 commonly used tools class Hongyang

Importandroid.app.Activity;ImportAndroid.content.Context;ImportAndroid.content.ContextWrapper;Importandroid.content.SharedPreferences;ImportJava.io.File;ImportJava.lang.reflect.Field;Importjava.lang.reflect.InvocationTargetException;ImportJava.lang.reflect.Method;ImportJava.util.Map; Public classSputil {/**the path of the SP file is allowed to be modified in the debug environment*/     Public Static Final BooleanIsdebug =true; /**to modify the path of a future SP file*/     Public Static FinalString File_path = "/sdcard/sp_file_path"; /*** Save Data * *@paramContext *@paramFileName file name, ". xml" is not required *@paramKeyName *@paramvalue*/     Public Static voidput (context context, string fileName, String keyName, Object value) {sharedpreferences.editor Editor=getsharedpreferences (context, FileName). Edit (); if(ValueinstanceofString)        {editor.putstring (KeyName, (String) value); } Else if(ValueinstanceofInteger)        {Editor.putint (KeyName, (Integer) value); } Else if(ValueinstanceofBoolean)        {Editor.putboolean (KeyName, (Boolean) value); } Else if(ValueinstanceofFloat)        {Editor.putfloat (KeyName, (Float) value); } Else if(ValueinstanceofLong)        {Editor.putlong (KeyName, (Long) value); } Else{editor.putstring (KeyName, value.tostring ());    } sharedpreferencescompat.apply (editor); }    /*** Get Data * *@paramContext *@paramFileName *@paramKeyName *@paramDefaultValue Default Value *@return     */     Public StaticObject Get (context context, string fileName, String keyName, Object defaultvalue) {sharedpreferences SP=getsharedpreferences (context, fileName); if(DefaultValueinstanceofString) {            returnsp.getstring (KeyName, (String) defaultvalue); } Else if(DefaultValueinstanceofInteger) {            returnSp.getint (KeyName, (Integer) defaultvalue); } Else if(DefaultValueinstanceofBoolean) {            returnSp.getboolean (KeyName, (Boolean) defaultvalue); } Else if(DefaultValueinstanceofFloat) {            returnsp.getfloat (KeyName, (Float) defaultvalue); } Else if(DefaultValueinstanceofLong) {            returnSp.getlong (KeyName, (Long) defaultvalue); }        return NULL; }    /*** Remove the value corresponding to a key value * *@paramContext *@paramFileName *@paramKeyName*/     Public Static voidRemove (context context, string fileName, String keyName) {Sharedpreferences.editor Editor=getsharedpreferences (context, FileName). Edit ();        Editor.remove (KeyName);    Sharedpreferencescompat.apply (editor); }    /**Clear All data*/     Public Static voidClear (Context context, String FileName) {sharedpreferences.editor Editor=getsharedpreferences (context, FileName). Edit ();        Editor.clear ();    Sharedpreferencescompat.apply (editor); }    /*** Query If a key already exists * *@paramContext *@paramKeyName *@return     */     Public Static Booleancontains (context context, string fileName, String keyName) {returngetsharedpreferences (context, FileName). Contains (keyName); }    /**returns all key-value pairs*/     Public StaticMap<string,?>GetAll (Context context, String FileName) {returngetsharedpreferences (context, FileName). GetAll (); }    /**Create a compatible class that resolves the Sharedpreferencescompat.apply method*/    Private Static classSharedpreferencescompat {Private Static FinalMethod Sapplymethod =Findapplymethod (); /**How reflection finds an apply*/@SuppressWarnings ({"Unchecked", "Rawtypes"})        Private StaticMethod Findapplymethod () {Try{Class Clz= Sharedpreferences.editor.class; returnClz.getmethod ("Apply"); } Catch(Nosuchmethodexception e) {}return NULL; }        /**if found, use apply to execute, otherwise commit is used*/         Public Static voidapply (Sharedpreferences.editor Editor) {Try {                if(Sapplymethod! =NULL) {Sapplymethod.invoke (editor); return; }            } Catch(IllegalArgumentException e) {}Catch(Illegalaccessexception e) {}Catch(InvocationTargetException e) {} editor.commit (); }    }    /**     * @paramContext *@paramFileName *@returnIsdebug = return modified path (path does not exist automatically created) after sharedpreferences:%file_path%/%filename%.xml<br/> *!isdebug = return to the default path of S Haredpreferences:/data/data/%package_name%/shared_prefs/%filename%.xml*/    Private Staticsharedpreferences getsharedpreferences (context context, String FileName) {if(isdebug) {Try {                //gets the mbase variable in the Contextwrapper object. The variable holds the Contextimpl objectField field = Contextwrapper.class. Getdeclaredfield ("Mbase"); Field.setaccessible (true); //Get mbase variableObject obj =Field.get (context); //gets the Contextimpl. Mpreferencesdir variable that holds the save path to the data filefield = Obj.getclass (). Getdeclaredfield ("Mpreferencesdir"); Field.setaccessible (true); //Create a custom pathFile File =NewFile (File_path); //Modifying the value of a Mpreferencesdir variablefield.set (obj, file); //returns the sharedpreferences after the modified path:%file_path%/%filename%.xml                returncontext.getsharedpreferences (FileName, activity.mode_private); } Catch(nosuchfieldexception e) {e.printstacktrace (); } Catch(IllegalArgumentException e) {e.printstacktrace (); } Catch(illegalaccessexception e) {e.printstacktrace (); }        }        //return to sharedpreferences under the default path:/data/data/%package_name%/shared_prefs/%filename%.xml        returncontext.getsharedpreferences (FileName, context.mode_private); }}

Android Common Tool class Sputil, you can modify the default SP file path