Technical answers from my Stack Overflow history, with source links and licenses.
Showing 30 of 268 answers
Exported May 9, 2026
On many popular devices the market name of the device is not available. For example, on the Samsung Galaxy S6 the value of Build.MODEL could be "SM-G920F" , "SM-G920I" , or "SM-G920W8" . I created a small library that...
Going off the answer from @BlondeFurious , here is some Java code to get each hexadecimal value from 100% to 0% alpha: Output: A JavaScript version is below: You can also just Google "number to hex" where 'number' is...
In Facebook version 11.0.0.11.23 (3002850) fb://profile/ and fb://page/ no longer work. I decompiled the Facebook app and found that you can use fb://facewebmodal/f?href=[YOUR_FACEBOOK_PAGE] . Here is the method I have...
The majority of apps that want a convenient method to get the application context create their own class which extends android.app.Application . GUIDE You can accomplish this by first creating a class in your project...
I had to parse /system/etc/fonts.xml in a recent project. Here are the current font families as of Lollipop: Here is the parser (based off FontListParser ): Feel free to use the above class in your project. For example,...
To get a list of running processes on Android 1.6 - Android 6.0 you can use this library I wrote: https://github.com/jaredrummler/AndroidProcesses The library reads /proc to get process info. Google has significantly...
Setting a ColorFilter (tint) on a MenuItem is simple. Here is an example: The above code is very helpful if you want to support different themes and you don't want to have extra copies just for the color or...
Using some reflection did the trick for me Java: XML: Here is a method that you can use that doesn't need an XML:
There is no documentation on d.android.com for font family names. However, if you look at AOSP, the default fonts are loaded in android.graphics.* . The FontListParser loads the default fonts from /system/etc/fonts.xml...
You can create a class which extends Resources and override the methods getColor(int) and getColor(int, Theme) . Example: colors.xml Res.java BaseActivity.java This is the approach I have used in one of my apps, Root...
Update 2019: There is no public API to set the cursor drawable. See https://stackoverflow.com/a/57555148/253468 for API available on 29 and above, before that conditionally you'll need to use reflection as described...
It looks like Google has finally implementing a workaround/fix for surpassing the 65K method limit of dex files. About the 65K Reference Limit Android application (APK) files contain executable bytecode files in the...
Original answer: I too tried to change the support library to "23". When I changed the targetSdkVersion to 23, Android Studio reported the following error: This support library should not use a lower version (22) than...
If you can create the dialog using AlertDialog the following worked for me:
Here is a method to get the Intent to open the Instagram app to the user's profile page:
It is a deprecated feature: https://code.google.com/p/android/issues/detail?id=235625 There is an option in Android Studio to "Show Package Details". For manual SDK and AVD management, please use Android Studio. For...
To help reduce boilerplate I use the following interface and class to read/write to a Bundle for saving instance state. First, create an interface that will be used to annotate your instance variables: Then, create a...
RecyclerView is not supported to be used as a RemoteView. See CreatingLayout A RemoteViews object (and, consequently, an App Widget) can support the following layout classes: FrameLayout LinearLayout RelativeLayout...
In Facebook version 11.0.0.11.23 (3002850) fb://profile/ and fb://page/ are no longer supported. I decompiled the Facebook app and was able to come up with the following solution: Edit: It has been some time and it...
On many popular devices the market name of the device is not available. For example, on the Samsung Galaxy S6 the value of Build.MODEL could be "SM-G920F" , "SM-G920I" , or "SM-G920W8" . I created a small library that...
The class posted as an answer from user Void has a bunch of unnecessary things. Here is my class that uses reflection on android.os.SystemProperties :
Ted's answer to lighten a color wasn't working for me so here is a solution that might help someone else:
For anyone that needs to set the EditText cursor color dynamically, below you will find two ways to achieve this. First, create your cursor drawable: Set the cursor drawable resource id to the drawable you created (...
This worked for me: com.facebook.katana Updated answer for Android Q as mCurrentFocus was no longer working for me:
First, you should note that file.mkdir() and file.mkdirs() returns false if the directory already existed. If you want to know whether the directory exists on return, either use (file.mkdir() || file.isDirectory()) or...
This is because Instant Run takes awhile to load. The blank/white screen will go away in production builds. I'm not sure why Instant Run takes so long to load. If you look in the app's internal cache directory you will...
The first screenshot in your question is not a public widget. The support SearchView ( android.support.v7.widget.SearchView ) mimics Android 5.0 Lollipop's SearchView ( android.widget.SearchView ). Your second...
You will need to use reflection to tint the select handles (bubbles). I wrote the following class this morning: Example usage: EditTextTint.java : Note: This should work from Jelly Bean to Nougat. However, since it uses...
Instead of removing your entire gradle cache, like some answers here are suggesting, you can delete the cache for a specific group or artifact id. I added the following function to my .bash_profile : Usage: Then, on the...
If COMPONENT_ENABLED_STATE_DEFAULT is returned, how do I know if it's default as enabled or disabled? You will need to load all the components using PackageManager and check the enabled state for the matching...