android-studio

问题 here is screenshots of my xml(activity) file + the preview that stays empty... https://ibb.co/3d9BjYz https://ibb.co/3CvTJKh 回答1: Please read AdapterView explanation in Android Documentation. Here is the explanation: "An AdapterView is a view whose children are determined by an Adapter." You didn't share your Java code, but you need an Adapter to bind data and view. Please check getView method in your Adapter. Your problem should be related with the parent view in your Adapter class. 来源：

问题 here is screenshots of my xml(activity) file + the preview that stays empty... https://ibb.co/3d9BjYz https://ibb.co/3CvTJKh 回答1: Please read AdapterView explanation in Android Documentation. Here is the explanation: "An AdapterView is a view whose children are determined by an Adapter." You didn't share your Java code, but you need an Adapter to bind data and view. Please check getView method in your Adapter. Your problem should be related with the parent view in your Adapter class. 来源：

问题 I am trying something similar to like/unlike feature of Instagram. But whenever I try to click the star in the Recycler View, the white star does not change to red star as shown below: The white changes to red and then to white again. The MyAdapter class is: public class MyAdapter extends RecyclerView.Adapter<ListItemViewHolder>{ private List<ListItem> listItems; MyAdapter(List<ListItem> listItems){ this.listItems = listItems; } @NonNull @Override public ListItemViewHolder onCreateViewHolder(

问题 This question already has an answer here : When i am trying to upload it in market it shows.. “You need to reduce your APK file size to 50MB or use APK Expansion Files.” [closed] (1 answer) Closed 3 years ago . When I try to upload my application in Google Play I get the following error message: "You need to reduce your APK file size to 100MB or use APK Expansion Files." Can someone explain me the steps that I have to do to expand the files? I really don't have any idea about what I have to

问题 This question already has an answer here : When i am trying to upload it in market it shows.. “You need to reduce your APK file size to 50MB or use APK Expansion Files.” [closed] (1 answer) Closed 3 years ago . When I try to upload my application in Google Play I get the following error message: "You need to reduce your APK file size to 100MB or use APK Expansion Files." Can someone explain me the steps that I have to do to expand the files? I really don't have any idea about what I have to

问题 This question already has an answer here : When i am trying to upload it in market it shows.. “You need to reduce your APK file size to 50MB or use APK Expansion Files.” [closed] (1 answer) Closed 3 years ago . When I try to upload my application in Google Play I get the following error message: "You need to reduce your APK file size to 100MB or use APK Expansion Files." Can someone explain me the steps that I have to do to expand the files? I really don't have any idea about what I have to

问题 I am running android emulator in ubuntu-19.10 and I have attempted following solutions with no results, Link-1 Link-2 Link-3 Error, 1:10 PM Emulator: pulseaudio: pa_context_connect() failed 1:10 PM Emulator: pulseaudio: Reason: Connection refused 1:10 PM Emulator: pulseaudio: Failed to initialize PA contextaudio: Could not init `pa' audio driver Some notes on solution I tried, When trying Link-1 i don't see "Qemu-system" in settings. Also created many different versions of AVDs but does seem

问题 After an update of Java facing an issue of Process unexpectedly exit while creating the build for Android. I was using Android Studio 3.3.0 and updated it also into 3.4.1 also to see any update but there is no change. Currently I'm using classpath 'com.android.tools.build:gradle:3.4.1' could not run my app. When I try to run the error shows : Process unexpectedly exit. I have tried with downgrading the version of gradle from 3.4.1 to 3.1.4 but it also din't work. And it gives a new error

问题 I have an Asus Zenfone 2 Laser and I'm using android studio to create apps. When I load an application stored in the hard disk of my computer for debugging, no problems, but when the application is stored in a USB device, at first android studio warns that there is already a version of the same app in my phone and asks if it has to uninstall it in order to install the new version; when I click the button to uninstall it, it doesn't install the new one... How can I fix the problem? Thanks 回答1:

问题 I have an Asus Zenfone 2 Laser and I'm using android studio to create apps. When I load an application stored in the hard disk of my computer for debugging, no problems, but when the application is stored in a USB device, at first android studio warns that there is already a version of the same app in my phone and asks if it has to uninstall it in order to install the new version; when I click the button to uninstall it, it doesn't install the new one... How can I fix the problem? Thanks 回答1: