Save Usage Preferences - Android

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I would like to know the best way to save the usage preferences of an application, such as a checkbox marked or the ordering of a listview. if you can pass some example code thank you.

android checkbox

  • can use the Shared preferences or the Api Preference It depends on what and how you want to do it. It’s been a while since I’ve touched android so I don’t have code.

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Creates the Sharedpreferences object

SharedPreferences pref = getApplicationContext().getSharedPreferences("MinhasPreferencias", MODE_PRIVATE); 
Editor editor = pref.edit();

Saving the data in pairs KEY/VALUE

editor.putBoolean("nome_da_chave1", true);      // Salvando valor booleano - true/false
editor.putInt("nome_da_chave2", "int value");   // Salvando valor inteiro integer
editor.putFloat("nome_chave3", "float value");  // Salvando float
editor.putLong("nome_chave4", "long value");    // Salvando long
editor.putString("nome_chave5", "string value");  // Salvando string

// Salva as alterações no objeto SharedPreferences
editor.commit();   // valida as alterações

Reading the data from Sharedpreferences

boolean estachecado = pref.getBoolean("nome_chave1", true);  // lendo o  boolean
int qualaidade = pref.getInt("nome_chave2", 0);             // lendo o valor inteiro
float total =pref.getFloat("nome_chave3", null);        // lendo o valor  Float
long distancia = pref.getLong("nome_chave4", null);     // lendo o valor Long
String email=pref.getString("nome_chave5", null);       // lendo a String

Excluding values from Sharedpreferences

editor.remove("nome_chave3"); // excluindo a chave nome_chave3
editor.remove("nome_chave4"); // excluindo a chave nome_chave4

// Salva as alterações em SharedPreferences
editor.commit(); // valida as mudanças

Eliminates all data from Sharedpreferences

 editor.clear();
 editor.commit(); // Salva as alterações

  • Perfect Reginaldo, thank you very much!

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