Get all SharedPreferences keys in Android: Easy programmatically method

Introduction

SharedPreferences is an important part of the Android framework, allowing developers to store and retrieve primitive data types in key-value pairs. However, at times, it can be useful to retrieve all the keys stored in SharedPreferences programmatically. In this article, we will explore an easy method to accomplish this task.

Method

To retrieve all the keys stored in SharedPreferences, we can make use of the getAll() method provided by the SharedPreferences interface. This method returns a Map containing all the key-value pairs stored in SharedPreferences.

First, we need to retrieve an instance of the SharedPreferences object using the following code:

SharedPreferences sharedPreferences = getSharedPreferences("my_preferences", MODE_PRIVATE);

Here, "my_preferences" is the name of the SharedPreferences file we want to access, and MODE_PRIVATE is the access mode.

Next, we can retrieve all the keys stored in SharedPreferences using the getAll() method as follows:

Map<String, ?> allEntries = sharedPreferences.getAll();
for(Map.Entry<String, ?> entry : allEntries.entrySet()){
    Log.d("map values", entry.getKey() + ": " + entry.getValue().toString());
}

In the code above, we first retrieve all the key-value pairs stored in SharedPreferences as a Map using the getAll() method. We then iterate through the entries in the Map using a for-each loop and print each key-value pair using the Log.d() method.

Conclusion

In conclusion, retrieving all the keys stored in SharedPreferences programmatically is an easy task that can be accomplished using the getAll() method provided by the SharedPreferences interface. By using this method, we can access all the key-value pairs stored in SharedPreferences and perform any necessary operations on them.