android

问题 I have problems when some hardware issues appears and my kivy app crashes. For example on Android or iOS. Regular users can't see the log, neither can I. So, when my application starts, I want to create separate process and somehow look at the status of main application. In case of it's crash I'd like to send error log to my server. So, what is the best way to do this? Maybe another process is redundant and I can make it in more simple way? And how exactly I can catch crash log?...Thanks! 回答1

问题 Working with cloud firestore its always good to keep in mind about count of document read. I am working on an inventory app in which bill is getting generated for the list of products along with other details. Everything is working fine except the update of arraylist in the bill. I am able to insert the arraylist of product along with other details in the bill but i am not able to update the arraylist later. Whenever i try to insert more arraylist into the document, old arraylist get deleted.

问题 Working with cloud firestore its always good to keep in mind about count of document read. I am working on an inventory app in which bill is getting generated for the list of products along with other details. Everything is working fine except the update of arraylist in the bill. I am able to insert the arraylist of product along with other details in the bill but i am not able to update the arraylist later. Whenever i try to insert more arraylist into the document, old arraylist get deleted.

问题 In Android Studio, when I press play button to install and run the app on the Android Emulator, after about 5-10 seconds, I get a message on the bottom of the screen saying "Install successful" but the app doesn't actually run on the emulator, I have to press the play button again. This is quite frustrating because I have worked on projects where I just press play once and it installs and runs at the same time. I tried searching this forum but couldn't find an answer. Does anybody else

问题 i have application where I'm using form as message box, in this "message box" i run thread that changing messages on it and after thread finish, on message box i show buttons, only after clicking on button code can continue var FStart: TFStart; VariableX:Boolean; implementation uses UApp,UMess; {$R *.fmx} procedure TFStart.Button2Click(Sender: TObject); begin VariableX:=false; { There i show window and start thread after finish thread set VariableX as true and close form } // There i need to

问题 What is the best way to get user-defined custom name of an Android device? Some phones treat both device name and bluetooth name as the same. In these cases I could get the bluetooth name. In some phones there is a setting called Owner Info , under Security->Settings . How can I read the name from that? Or is there anything else you would suggest for my scenario? Understand that I'm not asking for the profile name from People app or the model / manufacturer of the phone. 回答1: I have posted

问题 I have a View pager inside of Fragment Activity and the View pager Contain two fragment at the start of the activity i have a rest request and when i get the response i want to update the Views inside of each fragment and in each one i'm using getActivity but my problem is the i always get null pointer exception on getActivity just on tablet Devices but i didn't get this issue on mobile phones that's my pager adapter public class Guide_ViewPager_adapter extends FragmentStatePagerAdapter {

问题 i am using MediaRecorder in Android to record a video, mu current paramaters are: mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT); mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT); mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT); mMediaRecorder.setOutputFile(getOutputMediaFile().toString()); mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT); mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264); mMediaRecorder

问题 I'm trying to add a message in a web view, the message should come out when you do not have an Internet connection. I have tried many ways but I always make a mistake that I do not understand. I create a folder called "assets" and add a file "error.html" following a YouTube tutorial but it gives me errors I will write my codes here without what I saw on YouTube. Thank you MainActivity.java import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.support

问题 i am using MediaRecorder in Android to record a video, mu current paramaters are: mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT); mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT); mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT); mMediaRecorder.setOutputFile(getOutputMediaFile().toString()); mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT); mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264); mMediaRecorder