sharedpreferences

问题 This question already has answers here : SharedPreferences.onSharedPreferenceChangeListener not being called consistently (8 answers) Closed 6 years ago . I have registered registerOnSharedPreferenceChangeListener with my SharedPreferences in my Activity. When I change the data saved with SharedPreferences inside service running in different process, onSharedPreferenceChanged is not called! What should I do to make android call onSharedPreferenceChanged ? 回答1: Most likely, it is being garbage

问题 This question already has answers here : SharedPreferences.onSharedPreferenceChangeListener not being called consistently (8 answers) Closed 6 years ago . I have registered registerOnSharedPreferenceChangeListener with my SharedPreferences in my Activity. When I change the data saved with SharedPreferences inside service running in different process, onSharedPreferenceChanged is not called! What should I do to make android call onSharedPreferenceChanged ? 回答1: Most likely, it is being garbage

问题 Recently, I had a requirement in one of my projects to observe the changes in SharedPreferences throughout my app (I had activity, Foreground Service and BroadcastReciever which would react differently to changes in SharedPreferences). I also wanted to listen for these changes only when my corresponding AppComponents are active. As such, LiveData would be what will suit my requirement but what would be the best approach to do so? (Asking the question for documentation purpose, would love to

问题 I need to create an array of the last 5 call dates. I know that I have to save the date on the array but I don't know how to reorder the other records to keep this last call date the 1st record. And always maintain only 5 records The Goal is to save that last call string and add to the array, after that I reorder to and maintain only the 5 records, after that I use FlexJson to make a string and save on sharedpreferences. Anyone have this full process? Here what I'm doing but is throwing

问题 I need to create an array of the last 5 call dates. I know that I have to save the date on the array but I don't know how to reorder the other records to keep this last call date the 1st record. And always maintain only 5 records The Goal is to save that last call string and add to the array, after that I reorder to and maintain only the 5 records, after that I use FlexJson to make a string and save on sharedpreferences. Anyone have this full process? Here what I'm doing but is throwing

问题 I'm new here. I'm french so maybe my english is not very good, sorry for that. I'm a beginner in Android development, I got to create an app for finish my study. I have an activity number 1 called VoeuxActivity.java with 8 buttons (and 8 TextViews), they are all VISIBLEs at the beginning, when an user click on one of them button change by INVISIBLE (user can't see the button after clicked on it), when I quit the app and I come back again on my app, the button is always invisible thanks to the

问题 I'm new here. I'm french so maybe my english is not very good, sorry for that. I'm a beginner in Android development, I got to create an app for finish my study. I have an activity number 1 called VoeuxActivity.java with 8 buttons (and 8 TextViews), they are all VISIBLEs at the beginning, when an user click on one of them button change by INVISIBLE (user can't see the button after clicked on it), when I quit the app and I come back again on my app, the button is always invisible thanks to the

问题 I am working in one of my android project in which I have used Shared preference. Recently I found that you can see Shared preference values if you root your device. so basically Shared preference is not secure any more. can anyone suggest me what is the best way to encrypt/decrypt Shared preference values? if there any good libraries? I have seen many solutions to encrypt/decrypt Shared preference but no one looks secure. Any suggestions please? 回答1: The data can be accessed and manipulated

问题 I'd like to create a screen that only shows once after the application starts. Afterward, then it will only show the main screen. The way I implemented this was just to check the preferences and set the current layout based on a flag. Are there any draw backs to implementing it this way? Is there a better way? @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //Here is the main layout setContentView(R.layout.main); mPrefs = PreferenceManager

问题 I'm novice in Android development and now I'd really like to learn Shared Preferences. I've googled it so many times and I don't think I quite mastered it. I believe this Shared Preferences will help me to store username and a password on my login screen activity. Thanks you! 回答1: I made some videos about this as an audition for a job. They helped me get the job, and they're still available on Vimeo, so hopefully they can help you out. Part 1: Saving Data Part 2: Retrieving Data Also, for