{"id":8199,"date":"2022-09-12T10:25:13","date_gmt":"2022-09-12T04:55:13","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-to-use-sharedpreferences-to-change-view-visibility-in-login-and-logout\/"},"modified":"2022-09-12T10:25:13","modified_gmt":"2022-09-12T04:55:13","slug":"solved-how-to-use-sharedpreferences-to-change-view-visibility-in-login-and-logout","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-to-use-sharedpreferences-to-change-view-visibility-in-login-and-logout\/","title":{"rendered":"[Solved] How to use SharedPreferences to change view visibility in login and logout"},"content":{"rendered":"

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To place info into SharedPreferences<\/code> you should write following:<\/p>\n

SharedPreferences sp = getSharedPreferences(PREFERNCES_FILE, MODE_PRIVATE);\nsp.edit().putString(PREFERENCES_LOGIN, login).apply();\n<\/code><\/pre>\n
Variables PREFERNCES_FILE<\/code> and PREFERENCES_LOGIN<\/code> should be defined as String<\/code>:<\/p>\n
public static final String PREFERNCES_FILE = \"my_preferences_file\";\npublic static final String PREFERENCES_LOGIN = \"login\";\n<\/code><\/pre>\n
On logout there should be:<\/p>\n
sp.edit().remove(PREFERENCES_LOGIN).apply();\n<\/code><\/pre>\n
Then to check if there is allready some info call:<\/p>\n
boolean isLogged = sp.contains(PREFERENCES_LOGIN);\n<\/code><\/pre>\n
Then just set needed visibility:<\/p>\n
login.setVisibility(isLogged ? View.GONE : View.VISIBLE);\n<\/code><\/pre>\n
UPDATE<\/strong><\/p>\n
Ok, here is example. This code should be in onCreate<\/code>:<\/p>\n
SharedPreferences sp = getSharedPreferences(PREFERNCES_FILE, MODE_PRIVATE);\nboolean isLogged = sp.contains(PREFERENCES_LOGIN);\nButton login = (Button)findViewById(R.id.btnLogin);\nlogin.setVisibility(isLogged ? View.GONE : View.VISIBLE);\nlogin.setOnClickListener(this);\nButton logout = (Button)findViewById(R.id.btnLogout);\nlogout.setVisibility(isLogged ? View.VISIBLE : View.GONE);\nlogout.setOnClickListener(this);\n<\/code><\/pre>\n
And there should be button in your login_user<\/code> xml with btnLogout<\/code> id.
\nIn onClick<\/code> should be:<\/p>\n
    @Override\n    public void onClick(View v)\n    {\n        final int id = v.getId();\n        switch (id) {\n            case R.id.btnLogin:\n                SharedPreferences sp = getSharedPreferences(PREFERNCES_FILE, MODE_PRIVATE);\n                sp.edit().putString(PREFERENCES_LOGIN, login).apply();\n                findViewById(R.id.btnLogin).setVisibility(View.GONE);\n                findViewById(R.id.btnLogout).setVisibility(View.VISIBLE);\n                \/\/another actions after login\n                break;\n            case R.id.btnLogout:\n                SharedPreferences sp = getSharedPreferences(PREFERNCES_FILE, MODE_PRIVATE);\n                sp.edit().remove(PREFERENCES_LOGIN).apply();\n                findViewById(R.id.btnLogin).setVisibility(View.VISIBLE);\n                findViewById(R.id.btnLogout).setVisibility(View.GONE);\n                \/\/another actions after logout\n                break;\n            \/\/ even more buttons here\n        }\n    }\n<\/code><\/pre>\n
In login<\/code> variable should be login data – I don’t know where you should get it.<\/p>\n<\/p><\/div>\n
<\/div>\n<\/div>\n
            4<\/span> <\/p><\/div>\n<\/div>\n
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solved How to use SharedPreferences to change view visibility in login and logout <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] To place info into SharedPreferences you should write following: SharedPreferences sp = getSharedPreferences(PREFERNCES_FILE, MODE_PRIVATE); sp.edit().putString(PREFERENCES_LOGIN, login).apply(); Variables PREFERNCES_FILE and PREFERENCES_LOGIN should be defined as String: public static final String PREFERNCES_FILE = “my_preferences_file”; public static final String PREFERENCES_LOGIN = “login”; On logout there should be: sp.edit().remove(PREFERENCES_LOGIN).apply(); Then to check if there is allready some info … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[452],"class_list":["post-8199","post","type-post","status-publish","format-standard","hentry","category-solved","tag-android"],"yoast_head":"\n[Solved] How to use SharedPreferences to change view visibility in login and logout - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-use-sharedpreferences-to-change-view-visibility-in-login-and-logout\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] How to use SharedPreferences to change view visibility in login and logout - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] To place info into SharedPreferences you should write following: SharedPreferences sp = getSharedPreferences(PREFERNCES_FILE, MODE_PRIVATE); sp.edit().putString(PREFERENCES_LOGIN, login).apply(); Variables PREFERNCES_FILE and PREFERENCES_LOGIN should be defined as String: public static final String PREFERNCES_FILE = "my_preferences_file"; public static final String PREFERENCES_LOGIN = "login"; On logout there should be: sp.edit().remove(PREFERENCES_LOGIN).apply(); Then to check if there is allready some info ... 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