Can't resolve symbol 'MainThread',Nullable'',and 'WorkerThread' in Android Studio
I have a problem in AsyncTask.java
when imprort the the Library
import android.support.annotation.MainThread;
import android.support.annotation.Nullable;
import android.support.annotation.WorkerThread;
I receive the following error: Can't resolve symbol
I tried added the command
dependencies {
...
implementation 'com.android.support:support-annotations:28.0.0'}
in build.gralde(app) but this does not work. Who can help me with this issue?
android 
android-studio edited Nov 23 '18 at 4:47
Kevin Voorn
63211129
asked Nov 23 '18 at 4:26
Khánh LinhKhánh Linh
11
add a comment |
I have a problem in AsyncTask.java
when imprort the the Library
import android.support.annotation.MainThread;
import android.support.annotation.Nullable;
import android.support.annotation.WorkerThread;
I receive the following error: Can't resolve symbol
I tried added the command
dependencies {
...
implementation 'com.android.support:support-annotations:28.0.0'}
in build.gralde(app) but this does not work. Who can help me with this issue?
android android-studio edited Nov 23 '18 at 4:47
Kevin Voorn
63211129
asked Nov 23 '18 at 4:26
Khánh LinhKhánh Linh
11
what is your minSdkVersion and targetSdkVersion in build.gradle?
– Android User
Nov 23 '18 at 4:36
minSdkVersion 21 and targetSdkVersion 26
– Khánh Linh
Nov 23 '18 at 4:47
rebuild your project once
– Har Kal
Nov 23 '18 at 8:03
yes, i try but failed...i think error version annotation?
– Khánh Linh
Nov 23 '18 at 8:31
i think it due to mismatch version of sdk version and annotation version . try using same version for both
– Android User
Nov 23 '18 at 9:21
add a comment |
I have a problem in AsyncTask.java
when imprort the the Library
import android.support.annotation.MainThread;
import android.support.annotation.Nullable;
import android.support.annotation.WorkerThread;
I receive the following error: Can't resolve symbol
I tried added the command
dependencies {
...
implementation 'com.android.support:support-annotations:28.0.0'}
in build.gralde(app) but this does not work. Who can help me with this issue?
android android-studio edited Nov 23 '18 at 4:47
Kevin Voorn
63211129
asked Nov 23 '18 at 4:26
Khánh LinhKhánh Linh
11
I have a problem in AsyncTask.java
when imprort the the Library
import android.support.annotation.MainThread;
import android.support.annotation.Nullable;
import android.support.annotation.WorkerThread;
I receive the following error: Can't resolve symbol
I tried added the command
dependencies {
...
implementation 'com.android.support:support-annotations:28.0.0'}
in build.gralde(app) but this does not work. Who can help me with this issue?
android android-studio android android-studio edited Nov 23 '18 at 4:47
Kevin Voorn
63211129
asked Nov 23 '18 at 4:26
Khánh LinhKhánh Linh
11
edited Nov 23 '18 at 4:47
Kevin Voorn
63211129
asked Nov 23 '18 at 4:26
Khánh LinhKhánh Linh
11
edited Nov 23 '18 at 4:47
Kevin Voorn
63211129
edited Nov 23 '18 at 4:47
Kevin Voorn
63211129
edited Nov 23 '18 at 4:47
Kevin Voorn
63211129
63211129
asked Nov 23 '18 at 4:26
Khánh LinhKhánh Linh
11
asked Nov 23 '18 at 4:26
Khánh LinhKhánh Linh
11
asked Nov 23 '18 at 4:26
Khánh LinhKhánh Linh
11
11
what is your minSdkVersion and targetSdkVersion in build.gradle?
– Android User
Nov 23 '18 at 4:36
minSdkVersion 21 and targetSdkVersion 26
– Khánh Linh
Nov 23 '18 at 4:47
rebuild your project once
– Har Kal
Nov 23 '18 at 8:03
yes, i try but failed...i think error version annotation?
– Khánh Linh
Nov 23 '18 at 8:31
i think it due to mismatch version of sdk version and annotation version . try using same version for both
– Android User
Nov 23 '18 at 9:21
add a comment |
what is your minSdkVersion and targetSdkVersion in build.gradle?
– Android User
Nov 23 '18 at 4:36
minSdkVersion 21 and targetSdkVersion 26
– Khánh Linh
Nov 23 '18 at 4:47
rebuild your project once
– Har Kal
Nov 23 '18 at 8:03
yes, i try but failed...i think error version annotation?
– Khánh Linh
Nov 23 '18 at 8:31
i think it due to mismatch version of sdk version and annotation version . try using same version for both
– Android User
Nov 23 '18 at 9:21
what is your minSdkVersion and targetSdkVersion in build.gradle?
– Android User
Nov 23 '18 at 4:36
what is your minSdkVersion and targetSdkVersion in build.gradle?
– Android User
Nov 23 '18 at 4:36
minSdkVersion 21 and targetSdkVersion 26
– Khánh Linh
Nov 23 '18 at 4:47
minSdkVersion 21 and targetSdkVersion 26
– Khánh Linh
Nov 23 '18 at 4:47
rebuild your project once
– Har Kal
Nov 23 '18 at 8:03
rebuild your project once
– Har Kal
Nov 23 '18 at 8:03
yes, i try but failed...i think error version annotation?
– Khánh Linh
Nov 23 '18 at 8:31
yes, i try but failed...i think error version annotation?
– Khánh Linh
Nov 23 '18 at 8:31
i think it due to mismatch version of sdk version and annotation version . try using same version for both
– Android User
Nov 23 '18 at 9:21
i think it due to mismatch version of sdk version and annotation version . try using same version for both
– Android User
Nov 23 '18 at 9:21
add a comment |
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what is your minSdkVersion and targetSdkVersion in build.gradle?
– Android User
Nov 23 '18 at 4:36
minSdkVersion 21 and targetSdkVersion 26
– Khánh Linh
Nov 23 '18 at 4:47
rebuild your project once
– Har Kal
Nov 23 '18 at 8:03
yes, i try but failed...i think error version annotation?
– Khánh Linh
Nov 23 '18 at 8:31
i think it due to mismatch version of sdk version and annotation version . try using same version for both
– Android User
Nov 23 '18 at 9:21