android

问题 Need to change toolbar menu item text color in different fragments. Right now i have two fragments when this must work. I set static style AppTheme with. <item name="actionMenuTextColor">@color/black</item> In first fragment text must be black and in second white. I used this option when set SpannableString instead of String in setTitle on menuItem. This work good with version 8.0 and greater. When check how it works on 5.0, 6.0, 7.0 nothing change. Style set in Application section in

问题 I write in Android Studio on Windows. And I use OpenCV in my native c++ code.When calling the function, I get this error in logcat: "OpenCV Error: Unspecified error (The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script) in cvShowImage, file /Volumes/Linux/builds/master_pack-android/opencv/modules/highgui/src/window.cpp, line 545". I found

问题 I was following this post to setup Jacoco code coverage for my project. But I am facing a error while writing the task to generate the report. Gradle Task task jacocoTestReport(type: JacocoReport, dependsOn: ['testDebugUnitTest', 'createDebugCoverageReport']) { reports { xml.enabled = true html.enabled = true } def fileFilter = ['**/R.class', '**/R$*.class', '**/BuildConfig.*', '**/Manifest*.*', '**/*Test*.*', 'android/**/*.*'] def debugTree = fileTree(dir: "$project.buildDir/intermediates

问题 I am developing an android app, which connects to a mysql server that was working, but now a java.lang.ClassNotFoundException error: Didn't find class "java.sql.SQLType". I don't know what happened, the only things I changed was the version of the mysql connector, and the computer I was working on, please help me. Edit Sorry for the lack of information about the project, but I never know what is needed to help discover the problem. I am using gradle, with java 1.8 and Android SDK 9.0 (Pie)

问题 I am searching for this error whole internet, but yet, only one stackoverflow entry with no answer or comment. I am trying to use Retrofit 2. It is my first time using it. Here are my dependencies: compile 'com.squareup.retrofit2:retrofit:2.1.0' compile 'com.squareup.retrofit2:converter-gson:2.1.0' compile 'com.google.code.gson:gson:2.6.2' I exclued any OkHttp libraries as Retrofit already uses it. This is my request interface: public interface LoginService { @POST(HTTPService.AUTHENTICATIO

问题 Here is a library I got. I had added implementation 'ru.noties:scrollable:1.3.0' to my build.gradle . But, when I implement TabLayout of ru.noties:scrollable <ru.noties.scrollable.sample.TabsLayout android:id="@+id/tabs" android:layout_width="match_parent" android:layout_height="@dimen/tabs_height" android:background="@color/md_teal_500"/> I am getting the class isn't found. I am actually trying to use TabWidget like PlayStore . I want TabWidget like that gif. How to do that? Or, is there any

问题 Here is a library I got. I had added implementation 'ru.noties:scrollable:1.3.0' to my build.gradle . But, when I implement TabLayout of ru.noties:scrollable <ru.noties.scrollable.sample.TabsLayout android:id="@+id/tabs" android:layout_width="match_parent" android:layout_height="@dimen/tabs_height" android:background="@color/md_teal_500"/> I am getting the class isn't found. I am actually trying to use TabWidget like PlayStore . I want TabWidget like that gif. How to do that? Or, is there any

问题 I am using the PageView for the view-pager functionality and showing the image on each page with contains some text and button on each page. As I am using the Stack widget for putting the view on one another like Relative-layout in Android , But My Image on the First Page of the PageView is not set to fit on the screen I have tried the below solution like below 1).First link 2). Second Link But not getting the proper solution, I have tried the below lines of code for it, class

问题 This question already has answers here : AndroidStudio Cannot Find Layout (2 answers) Closed 10 months ago . I am new to Android Studio and I was working on moving from one activity to other. Name of other activity is activity_second . The following is the code of the SecondActivity Java class. public class SecondActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_second); if

问题 I understand that the FCM token renews itself if one of the following happens. -The app deletes Instance ID -The app is restored on a new device -The user uninstalls/reinstall the app -The user clears app data. The following can be used at the App side to monitor Token renewal. Monitor token generation The onTokenRefreshcallback fires whenever a new token is generated, so calling getToken in its context ensures that you are accessing a current, available registration token. Make sure you have