How to insert data to sqlite through user input?

Nesh_A :

I am a beginner in mobile application building. I have tried to put insert data function in my android studio but it seems that those insert function doesn't work and the input data can't be inserted. Please help.

I put some code in MainActivity.java and DatabaseHelper.java. It doesn't give me any error report but when I have tried to run the emulator and input data, my input can be inserted to sqlite database.

//oncreateMainActivity

super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        myDb = new DatabaseHelper(this);

        name2 = findViewById(R.id.name2);
        birthdate2 = findViewById(R.id.birthdate2);
        area2 = findViewById(R.id.area2);
        receiver2 = findViewById(R.id.receiver2);

        submit2 = findViewById(R.id.submit2);
        submit2.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v)
            {
                name = name2.getText().toString();
                birth = birthdate2.getText().toString();
                area = area2.getText().toString();
                receiver = receiver2.getText().toString();
...
        insertData2 (name, birth, area, receiver);
...

public void insertData2 (String name,String birth,String area, String receiver){
        boolean add_data = myDb.insertData(name,birth,area,receiver);

        if (!add_data){
            Toast.makeText(MainActivity.this,"Something went wrong><", Toast.LENGTH_LONG).show();
        }
        else{
            Toast.makeText(MainActivity.this,"Success to add data!", Toast.LENGTH_LONG).show();
        }

    }

//DatabaseHelper.java

public boolean insertData(String childname ,String bornday, String areaprogram, String receiverid){
        SQLiteDatabase db = this.getWritableDatabase();
        ContentValues contentValues = new ContentValues();
        contentValues.put(COL1, childname);
        contentValues.put(COL2, bornday);
        contentValues.put(COL3, areaprogram);
        contentValues.put(COL4, receiverid);

        long result = db.insert(TABLE_NAME, null, contentValues);

        if(result == -1){
            return false;
        }
        else{
            return true;
        }
    }

forpas :

The 1st parameter of the method put() is the name of the column, but you pass the value.
Change to this (of course replace with your column names like "Name", "Birthdate", etc):

public boolean insertData(String Name,String Birthdate,String Area, String ID){
    SQLiteDatabase db = this.getWritableDatabase();
    ContentValues contentValues = new ContentValues();
    contentValues.put(ColunNameForName, Name);
    contentValues.put(ColunNameForBirthdate, Birthdate);
    contentValues.put(ColunNameForArea, Area);
    contentValues.put(ColunNameForID, ID);

    long result = db.insert(TABLE_NAME, null, contentValues);

    if(result == -1){
        return false;
    }
    else{
        return true;
    }
}