cn.trinea.android.common.util

Class PreferencesUtils

java.lang.Object

cn.trinea.android.common.util.PreferencesUtils

public class PreferencesUtils
extends java.lang.Object

PreferencesUtils, easy to get or put data

Preference Name
• you can change preference name by PREFERENCE_NAME

Put Value
• put string putString(Context, String, String)
• put int putInt(Context, String, int)
• put long putLong(Context, String, long)
• put float putFloat(Context, String, float)
• put boolean putBoolean(Context, String, boolean)

Get Value
• get string getString(Context, String), getString(Context, String, String)
• get int getInt(Context, String), getInt(Context, String, int)
• get long getLong(Context, String), getLong(Context, String, long)
• get float getFloat(Context, String), getFloat(Context, String, float)
• get boolean getBoolean(Context, String), getBoolean(Context, String, boolean)

Author:

Trinea 2013-3-6

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	PREFERENCE_NAME

Constructor Summary

Constructors

Constructor and Description
PreferencesUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	getBoolean(Context context, java.lang.String key) get boolean preferences, default is false
static boolean	getBoolean(Context context, java.lang.String key, boolean defaultValue) get boolean preferences
static float	getFloat(Context context, java.lang.String key) get float preferences
static float	getFloat(Context context, java.lang.String key, float defaultValue) get float preferences
static int	getInt(Context context, java.lang.String key) get int preferences
static int	getInt(Context context, java.lang.String key, int defaultValue) get int preferences
static long	getLong(Context context, java.lang.String key) get long preferences
static long	getLong(Context context, java.lang.String key, long defaultValue) get long preferences
static java.lang.String	getString(Context context, java.lang.String key) get string preferences
static java.lang.String	getString(Context context, java.lang.String key, java.lang.String defaultValue) get string preferences
static boolean	putBoolean(Context context, java.lang.String key, boolean value) put boolean preferences
static boolean	putFloat(Context context, java.lang.String key, float value) put float preferences
static boolean	putInt(Context context, java.lang.String key, int value) put int preferences
static boolean	putLong(Context context, java.lang.String key, long value) put long preferences
static boolean	putString(Context context, java.lang.String key, java.lang.String value) put string preferences

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PREFERENCE_NAME

public static java.lang.String PREFERENCE_NAME

Constructor Detail

PreferencesUtils

public PreferencesUtils()

Method Detail

putString

public static boolean putString(Context context,
                java.lang.String key,
                java.lang.String value)

put string preferences

Parameters:

context -

key - The name of the preference to modify

value - The new value for the preference

Returns:

True if the new values were successfully written to persistent storage.

getString

public static java.lang.String getString(Context context,
                         java.lang.String key)

get string preferences

Parameters:

context -

key - The name of the preference to retrieve

Returns:

The preference value if it exists, or null. Throws ClassCastException if there is a preference with this name that is not a string

See Also:

getString(Context, String, String)

getString

public static java.lang.String getString(Context context,
                         java.lang.String key,
                         java.lang.String defaultValue)

get string preferences

Parameters:

context -

key - The name of the preference to retrieve

defaultValue - Value to return if this preference does not exist

Returns:

The preference value if it exists, or defValue. Throws ClassCastException if there is a preference with this name that is not a string

putInt

public static boolean putInt(Context context,
             java.lang.String key,
             int value)

put int preferences

Parameters:

context -

key - The name of the preference to modify

value - The new value for the preference

Returns:

True if the new values were successfully written to persistent storage.

getInt

public static int getInt(Context context,
         java.lang.String key)

get int preferences

Parameters:

context -

key - The name of the preference to retrieve

Returns:

The preference value if it exists, or -1. Throws ClassCastException if there is a preference with this name that is not a int

See Also:

getInt(Context, String, int)

getInt

public static int getInt(Context context,
         java.lang.String key,
         int defaultValue)

get int preferences

Parameters:

context -

key - The name of the preference to retrieve

defaultValue - Value to return if this preference does not exist

Returns:

The preference value if it exists, or defValue. Throws ClassCastException if there is a preference with this name that is not a int

putLong

public static boolean putLong(Context context,
              java.lang.String key,
              long value)

put long preferences

Parameters:

context -

key - The name of the preference to modify

value - The new value for the preference

Returns:

True if the new values were successfully written to persistent storage.

getLong

public static long getLong(Context context,
           java.lang.String key)

get long preferences

Parameters:

context -

key - The name of the preference to retrieve

Returns:

The preference value if it exists, or -1. Throws ClassCastException if there is a preference with this name that is not a long

See Also:

getLong(Context, String, long)

getLong

public static long getLong(Context context,
           java.lang.String key,
           long defaultValue)

get long preferences

Parameters:

context -

key - The name of the preference to retrieve

defaultValue - Value to return if this preference does not exist

Returns:

The preference value if it exists, or defValue. Throws ClassCastException if there is a preference with this name that is not a long

putFloat

public static boolean putFloat(Context context,
               java.lang.String key,
               float value)

put float preferences

Parameters:

context -

key - The name of the preference to modify

value - The new value for the preference

Returns:

True if the new values were successfully written to persistent storage.

getFloat

public static float getFloat(Context context,
             java.lang.String key)

get float preferences

Parameters:

context -

key - The name of the preference to retrieve

Returns:

The preference value if it exists, or -1. Throws ClassCastException if there is a preference with this name that is not a float

See Also:

getFloat(Context, String, float)

getFloat

public static float getFloat(Context context,
             java.lang.String key,
             float defaultValue)

get float preferences

Parameters:

context -

key - The name of the preference to retrieve

defaultValue - Value to return if this preference does not exist

Returns:

The preference value if it exists, or defValue. Throws ClassCastException if there is a preference with this name that is not a float

putBoolean

public static boolean putBoolean(Context context,
                 java.lang.String key,
                 boolean value)

put boolean preferences

Parameters:

context -

key - The name of the preference to modify

value - The new value for the preference

Returns:

True if the new values were successfully written to persistent storage.

getBoolean

public static boolean getBoolean(Context context,
                 java.lang.String key)

get boolean preferences, default is false

Parameters:

context -

key - The name of the preference to retrieve

Returns:

The preference value if it exists, or false. Throws ClassCastException if there is a preference with this name that is not a boolean

See Also:

getBoolean(Context, String, boolean)

getBoolean

public static boolean getBoolean(Context context,
                 java.lang.String key,
                 boolean defaultValue)

get boolean preferences

Parameters:

context -

key - The name of the preference to retrieve

defaultValue - Value to return if this preference does not exist

Returns:

The preference value if it exists, or defValue. Throws ClassCastException if there is a preference with this name that is not a boolean