Use of Esperandro

Esperandro Introduction

The Esperandro Library helps developers to use sharedpreferences by identifying existing key-value pairs and corresponding types. And for every preferences data that uses the Sharedpreference naming method, it's both safe and easy. Esperandro uses a comment processor to generate a class at compile time to define an interface. This class is used when perferences data is stored and accessed later.

Official website http://dkunzler.github.io/esperandro/

Add a jar package or dependency

There's a lot of trouble in Eclipse, just like butterknife. Reference http://blog.csdn.net/chenyufeng1991/article/details/46900395

The name in the new interface inheritance Sharedpreferenceactions @SharedPreferences is the file name in the SP folder

1@SharedPreferences (name= "setting", mode=sharedpreferencemode.private)2  Public InterfaceSettingspextendssharedpreferenceactions {3     4     intThemevalue ();5     voidThemevalue (intthemevalue);6     7 String strvalue ();8     voidstrvalue (String strvalue);9     Ten     Booleanboolvalue (); One     voidBoolvalue (Booleanboolvalue); A  -}

Set the value that needs to be deposited, support int, long, float, Boolean, String and Set<string>

The default value is

int --1long - -1lfloat - -1.0fbooleanfalse-"" (Empty String ) Setnull

If you want to set the default value above add @default to set it in front of the type to configure

    @Default (ofint=1)    int  themevalue ();     void themevalue (int  themevalue);        @Default (ofstring= "hehe")    String strvalue ();     void strvalue (String strvalue);        @Default (Ofboolean=true)    boolean  boolvalue ();     void Boolvalue (boolean boolvalue);

Get instance Settingsp.class is the interface that inherits Sharedpreferenceactions

Esperandro.getpreferences (class<t> Preferenceclass, Context context)

SETTINGSP settingsp= esperandro.getpreferences (settingsp.  Class, Mcontext);

With an instance, you can get and set the value so that the directly obtained value is the default value at the beginning, and the Data/data file SP folder is not generated.

        String str=settingsp.strvalue ();         int themevalue=settingsp.themevalue ();         boolean bool=settingsp.boolvalue ();

The setting file in the SP folder is generated when the value is set.

Settingsp.strvalue ("haha"); Settingsp.themevalue (666);

There may be more than one such interface in the actual situation and it can be cumbersome to generate instances of each activity within the baseactivity.

1     //sharedpreferences2     protected<P> P getsharedpreferences (class<p>Spclass) {3         returnEsperandro.getpreferences (Spclass, This);4     }5 6      Publicaccountsharedpreferences getaccountsharedpreferences () {7         returnGetsharedpreferences (accountsharedpreferences.class);8     }9      Publicsettingssharedpreferences getsettingssharedpreferences () {Ten         returnGetsharedpreferences (settingssharedpreferences.class); One     } A      Publiclocationsharedpreferences getlocationsharedpreferences () { -         returnGetsharedpreferences (locationsharedpreferences.class); -}

Then, in the activity, what interface will be called directly to the following 3 the interface of the Get method is OK to get the value and set the value of the method as follows

String str=getsettingssharedpreferences (). strvalue (); Getsettingssharedpreferences (). Themevalue (666);

Use of Esperandro