studio tag

324 questions


1 answers
47 views
0
If you run Android, it keeps shutting down android.widget.Button cannot be cast to android.view.ViewGroup

It keeps shutting down... Why is this happening?You can't change the code againㅠ


1 answers
117 views
0
Android will be forced to shut down. NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference

When you run Android and log in, the map screen appears, and it is forced to end immediately after the screen appears. Can anyone tell me what the problem is because I don't know how to watch logcat?0...


1 answers
94 views
0
Android studio is forced to shut down 'java.lang.Stringjava.lang.Object.toString()' on a null object reference

When you press a button on a map map, an error occurs.I used the threadI don't know which part is wrong.I'm just copying what someone else didPlease help me because I am not good at interpreting logca...


1 answers
52 views
0
Android Studio 4.0 no debuggable process detected

I'm using LG V50Enable USB debugging, connect to the Mac, Executed Android Studio -> Layout Debugger.As shown in the attached picture, the message no debugable process detected appears, so it is im...

2 years ago

1 answers
117 views
0
Question about Android studio error! Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference

I'm making a simple note app with Android studio.However, I try to run it on the emulator, but it keeps turning off and not running.There was no problem in the build window, so I faced a difficulty in...


1 answers
59 views
0
Where can I find the source code for classes like AppCompatActivity or functions like setContentView() in Android Studio?

I can see the explanations with ctrl+q, but I wonder where the source is and where the file is imported.And,If I make a button called Button1 in activity_main.xml,Allows coding of button1.setOnClickLi...

2 years ago

1 answers
47 views
0
How to delete html file strings in a folder in bulk

I'm thinking about implementing it with Python in all html files within a particular folderI want to remove all strings between <script~~~/script>ㅠ

2 years ago

1 answers
44 views
0
Questions about Android Studio App Development

There are already many in the market, but I'm going to make a wise saying app as a portfolio and practice.The method I thought of before starting the project was Write json data with HTml file and upl...


2 answers
41 views
0
Question about the output of the file input/output function

File Input/Output Function Question Hello, I'm taking the liberty of asking questions to others first The program is to input students' information through the file input/output function and get total...

2 years ago

1 answers
44 views
0
It says 'dataIn was nullptr'.

QUEUE* Node = createQueue();int* dataIn;int* dataOut;void BreadthFirstprint(Tree* tree) { if (tree) { *dataIn = tree->data; enqueue(Node, &dataIn); BreadthFirstprint(tree->left); Breadth...

2 years ago
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