I create android app, which is connected with estimote beacons. My project has to use estimote library and this library minimum sdk is set to 18, so minimum sdk of my whole project has to be 18. But I want my application works on minimum sdk 14. Is there any possibility to set my project min sdk to 14 and when sdk is older than 18 to turn off using this library?
SOLUTION
I have to use multiple apk to determine which devices can download version with estimote library and which have to download lower api version.
More info:
http://developer.android.com/google/play/publishing/multiple-apks.html
You can do it by using this check:
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR2){
// turn off that library here
}
If you cannot stop the library for some reasons then do this.
#SuppressLint("NewApi")
#Override
protected void onCreate(Bundle instantanState) {
.
.
.
if(Build.VERSION.SDK_INT >= 18){
// start your library here.
}
}
Make sure to add #SuppressLint("NewApi") before the function in which it is called or you can turn off android lint error checking for new Api features.
When you want use your library into your app check the OS version with
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2){
// use your library here
}
but don't forget to manage previous api:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2){
// use your library here
}
else {
//do something else
}
Related
I'm curious about what is the sense in setting both target and minimal supported API version when starting a new Android Studio project. I mean, if I set that minimal API is, say, 8, then I won't be able to use features from 22 (which could be my target), because it would break compatibility with API 8.
if I set that minimal API is, say, 8, then I won't be able to use
features from 22
You can use API level >= 8 features in application, but you have to check OS version of the device first, see following code, that's how you can maintain compatibility
if (android.os.Build.VERSION.SDK_INT == android.os.Build.VERSION_CODES.HONEYCOMB){
//use features of API 3.0
} else if (android.os.Build.VERSION.SDK_INT == android.os.Build.VERSION_CODES.HONEYCOMB_MR1){
//use features of API 3.1
} else if (android.os.Build.VERSION.SDK_INT == android.os.Build.VERSION_CODES.HONEYCOMB_MR2){
//use features of API 3.2
}else{
// and so on....
}
Other then code, use can use resource folders on the basis of API level, like:
values-v11
values-v12
values-14
....
and
drawable-v11
drawable-v12
drawable-14
....
This is not correct. By setting target API to 8 you can't use any features added after, but specifying minimum API is just a guarantee that you application will work on such devices. You don't guarantee that it provide all features on such devices, nor minimum API level restricts what features it could use when running on later versions of OS.
Look at PE history - all win32 executable files are compatible with MSDOS, but all they say after executing is just "This is not a MSDOS program.". Similar to this, it is your decision what features you provide on which OS you support.
I am working with a large project, which has a minimum API level:16. however, I came across API usages that are above API level 16.
Is there any tool in Android studio or elsewhere, other than testing with a device, to check if the code doesn't violate the minimum required API level or better point it out like an error etc.?
Thank you.
The IDE will use the minimum android SDK, thus you will not get compile errors. If you there are classes in SDK 14 which are moved in sdk 16, yet you are using the imports from SDK 14, it will give a standard compile error.
So no, not that I am aware of.
You can use something like this:
public static boolean supports(final int version) {
return Build.VERSION.SDK_INT >= version;
}
Like this,
if (supports(Build.VERSION_CODES.HONEYCOMB)) {
// do something HONEYCOMB+ compatible here
}
More codes here,
http://developer.android.com/reference/android/os/Build.VERSION_CODES.html
I found that from API 19+ their is a small change in code and it doesn't appear in API 19-.
How can I support both android versions in the same app?
EDIT: The are feature that exists only in android 4.1.2 and in versions below 4.1.2 they doesn't exists.
How can I make an app that support both versions with the exception that in lower version the "new" features won't exist? (its hard for me to explain)
You can wrap the API 19-specific code inside a conditional that queries the device version with the enumerated values present in Build.VERSION_CODES.
for instance :
if ( android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT )
{
// Kitkat (API level 19) code in here...
}
else {
// code for all versions lower than Kitkat in here...
}
When building android apps for different behavior on different targets we can do:
if (Build.VERSION.SDK_INT < 10) {
Toast.makeText(this.context, "Not Supported", Toast.LENGTH_LONG ).show();
} else {
this.doComplicatedOperation();
}
But in the method doComplicatedOperation() it would be logical to use higher api classes than the current build target (eg. api 5), but lint keeps complaining that ClassIntroducedInApiLevel11 can not be resolved as a type
How could I change the code of doComplicatedOperation() that my project compiles?
#TargetApi(11)
private void doComplicatedOperation() {
ClassIntroducedInApiLevel11 = new ClassIntroducedInApiLevel11();
}
The purpose of minSdkVersion is to exclude platforms where you do not provide backward compatibility support.
In order to provide the proper libraries for your build you need to set a higher targetSdkVersion so the IDE or whatever knows what libraries to include when creating your APK.
It sounds like you don't want to target a higher SDK because some methods or objects may be deprecated or even unsupported. That's when you use support libraries, if necessary, for backward compatibility.
You need to change your SDK target to at least the SDK that the method is in so in. You should always be targeting the highest API there is available (currently 19) so your manifest should look like this
<uses-sdk
android:minSdkVersion="5"
android:targetSdkVersion="19" />
if you are still targeting SDK 5 you are in the dark ages
I am facing a problem, I have to use one new API "BluetoothProfile" which is available for Android 3.0+. However if I use it I cant use my app anymore on Froyo or GingerBread.
Can someone suggest what are the options if I want to still support one build for all platforms.
build your application usng Android 3.0+ (API 11)
define minSdkVersion = 8 in AndroidManifest.xml
retrieve and compare device android version, and restrict application function.
In your code:
int currentapiVersion = android.os.Build.VERSION.SDK_INT;
if (currentapiVersion < android.os.Build.VERSION_CODES.HONEYCOMB){
Log.i(TAG, "Your android is too old, please upgrade.")
} else{
Log.i(TAG, "meet the minimum system requirement")
}
check out the API Build.VERSION and Build.VERSION_CODES