Develop Reference

Android Studio is changing my API level from 23 to 26

Thanks for stopping by. I have been working on an app at API 23. Now Android Studio is "upgrading" it to API 26. This is not what I want. I want to keep it at API 23. Everytime I make a new app its 26. Downgrading doesn't work; I get a bunch of errors.
Thanks

You can change it as you like.
1.Click on your project folder > app > build.gradle
An example of build.gradle:
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
buildToolsVersion "25.0.3"
defaultConfig {
applicationId "com.stackoverflow.answer"
minSdkVersion 21
targetSdkVersion 26
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
dependencies {
androidTestCompile 'junit:junit:4.12'
compile fileTree(dir: 'libs', include: ['*.jar'])
}
2.Open your Android Studio, and go to Menu.
File >Project Structure. In project Structure window, select app module in the list given on left side.
Select the Flavors tab and under this you will have an option for setting “Min Sdk Version” and for setting “Target Sdk Version”.
Select both the versions and Click OK.

Keep in mind that if you're uploading it to the play store, it's going to have to target 26, soon to be 27. That's probably why AS is trying to update your version.

google maps api sdk version error?

It's my code sample. When I firstly build my code, it results in so-called dex error. I added multiDexEnabled property to my gradle setting, but it results in java heap memory overflow. I increased its max size, and finally got builded. However, another error occurred...... what is the problem? android adk version?
apply plugin: 'com.android.application'
android {
compileSdkVersion 24
buildToolsVersion "24.0.2"
defaultConfig {
applicationId "belobster.earthquakealert"
minSdkVersion 14
targetSdkVersion 24
versionCode 1
versionName "1.0"
multiDexEnabled true
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
dexOptions {
javaMaxHeapSize "2g"
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:24.2.1'
compile 'com.google.android.gms:play-services:9.6.1'
}
emulator image.

Check whether play services is available on the emulator, you should consider using physical device for these kind of testing purposes since maps require location services quite often.

download gapps-lp-20141109-signed and install in genymotion

If you want to test it into Genymotion only then , Genymotion provide support for play service
So please check it. It's work for me.
Thank you.

Android API level - gradle compiles - will it run?

I changed the API level in my android project for test purposes from 22 down to 7 in the build.gradle file.
Gradle has no problems to build the project and it runs on my (Android 5.1 OS) withouth problems.
Does the successfull build indicates the app would run without problems on lower OS (down to API level 7)? If not - how can I check which API is the lowest appropriate for my application?
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
defaultConfig {
applicationId "com.myapplication"
minSdkVersion 7
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.2.0'
compile 'com.android.support:design:23.2.0'
}

The Gradle tooling, especially Lint, is nowadays very good to figure out whether or not your minSdkVersion really works for your app and will usually block a release build in the lintVitalRelease task when you use API that is not available on your min SDK level.
And of course, you always could (and should) create an API level 7 emulator and test-drive your app there as well. Even if it does not crash right away, some things might behave weird / different or might plainly be not working or visible at all, because compat API calls you were using have been converted to noops on lower API levels.

how to use marshmallow in Android studio

I am using Android studio and i want to use Marshmallow API and AppCompatActivity. When I created a new project the build.gradle contained the below lines but I receive error at R class which says not a symbol.
Please let me know how to correct the build.gradle to get the App work.
gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.1"
defaultConfig {
applicationId "com.example.com.myapplication"
minSdkVersion 19
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:23.0.1'
}

Click on Build->Clean Project and that will perform a gradle clean

Update your Android SDK Manager Install all component of Android 6.0 (API 23)

R file can be erased due to many reasons, try rebuilding your project(which is the most common issue) and other issues may include any syntax error or inappropriate file permissions in work space, the exact error report can help address the issue better.

Android Studio - Appcompat build fail values-v23/styles_bases.xml

I'll start from what I want to achieve: building the googlecast-manager example provided here: https://github.com/googlecast/GameManagerSamples
I followed instructions here: https://developers.google.com/cast/docs/android_sender
So first I downloaded from github the project, then with the Android SDK Manager I downloaded Android Support Libraries and Google play Services. Then in my project, I went to "Open Modules Setting->Add" then went to "Android SDK\extras\android\support\v7\appcompat" and added it.
Then first step to ensure it's working is to build it. So I right clicked on appcompat->"Compile Module Appcompat" but it fails with 2 errors:
Error:(20, -1) android-apt-compiler: [appcompat] D:\Android
SDK\extras\android\support\v7\appcompat\res\values-v23\styles_base.xml:20:
error: Error retrieving parent for item: No resource found that
matches the given name 'android:Widget.Material.Button.Colored'.
Error:(19, -1) android-apt-compiler: [appcompat] D:\Android
SDK\extras\android\support\v7\appcompat\res\values-v23\styles_base_text.xml:19:
error: Error retrieving parent for item: No resource found that
matches the given name
'android:TextAppearance.Material.Widget.Button.Inverse'.
Doing the same for Google Play works like a charm.
I've tried to find videos/other similar issues but it's either too complicated or not my problem.
Here is the AndroidManifest.xml of appcompat:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="android.support.v7.appcompat">
<uses-sdk android:minSdkVersion="9"
android:targetSdkVersion="19"/>
<application />
Here is what is installed from the Android SDK Manager:

I also encountered the same problem and now have fixed it. What you just have to do is
Inside your Android Studio
press Shift button two times, a search box will appear type build.gradle
choose build.gradle module:app from the suggestion.
major version of compileSdkVersion and support libraries under dependencies should be same as following code depict.
Inside Eclipse
find build.gradle module:app and do the same.
Note: download and install properly the latest API which is now API 23.
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.0"
defaultConfig {
applicationId "com.example.inzi.app"
minSdkVersion 9
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'),'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:23.0.0'
}

I believe you should upgrade your compileSdkVersion. Check your build.grade file, should be something like:
android {
compileSdkVersion 23 // <- here
buildToolsVersion "23.0.0" // <- here
defaultConfig {
applicationId "your.id"
minSdkVersion 11
targetSdkVersion 23 // <- and maybe here
versionCode 1
versionName "1.0"
}
buildTypes {
....
}
}
Of course you will need to download the newest Android SDK and build tools (and whatever else you need) from the SDK Manager.

If you are working in Eclipse do the following:
In your AndroidManifest.xml file change android:targetSdkVersion to 23
Open Project settings (ALT + Enter while focused in Project Explorer)
Go to Android tab and in Project Build Target section mark Android 6.0
Clean and build your project
NOTE: when you do this have in mind that Android OS would treat your app as if it was designed to work on Android M. So for example if you use some dangerous permissions you should add routines to check then on runtime.

You have to update your SDK to the API 23 that is either not downloaded or not installed properly.
In your build.gradle set
compileSdkVersion 23
buildToolsVersion "23.0.0"
targetSdkVersion 23
compile 'com.android.support:appcompat-v7:23.0.0'

I actually found the answer for my problem and the person above was right. The Module SDK set to compile the module was 22.0 and not 23.0. To fix that I did the following.
Right click on appcompat: "Open Module Setting -> Modules SDK": New. I Chose the folder containing the whole Android SDK and chose the last Android (e.g. 6.0) with the last Module SDK 23.0.

Either revert to appcompact-v22 or update to android api v23

You have to update your SDK to the API 23 that is either not downloaded or not installed properly.
Make sure your compileSdkVersion and dependencies version should be same.

I was having problem with new appcompat V-23 as my target sdk is 21. So I did following two steps and it works perfectly for me..
1) Delete the values-23 folder in res folder.
2) I was getting error on the src folder as well, so commented the only line inside main() of snippet.java as we do not require it.
Then add this project as library to your project.. Hope it helps.

I resolved like below
android {
compileSdkVersion "Google Inc.:Google APIs:21"
buildToolsVersion "23.0.0"
defaultConfig {
minSdkVersion 9
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
}
replaced the above dependencies with below...
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.google.android.gms:play-services:7.8.0'
}

To correct this error in android studio procceded like this :
i went to sdk manager and i downloaded and updated all packages of android api 23
file => project structure and i changed compile sdk version from 21 to 23 and build tools version from 21 to 23

The problem generally occurs due to version issues. The following dependencies and compilesdkversion Worked for me:-
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion '23.0.3'
defaultConfig {
minSdkVersion 14
targetSdkVersion 21
versionCode 1
versionName "1.0"
}
packagingOptions {
exclude 'META-INF/LICENSE'
exclude 'META-INF/LICENSE-FIREBASE.txt'
exclude 'META-INF/NOTICE'
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
productFlavors {
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
compile 'com.google.android.support:wearable:+'
compile 'com.google.android.gms:play-services-wearable:+'
compile 'com.android.support:appcompat-v7:23.0.0'
compile 'com.android.support:recyclerview-v7:23.0.0'
compile 'com.android.support:support-v13:23.0.+'
compile 'com.firebase:firebase-client-android:2.2.4+'
}

The answer #31 & #11 in this discussion can solve this issue:
https://code.google.com/p/android/issues/detail?id=183122

My issue was, one of my un-used dependencies was using sdk-23 version. So after removing those un-used dependencies it worked like a charm.