안드로이드 스튜디오 sqlite insert 질문있습니다 해결 부탁드립니다 ㅠㅠ [closed]

Question

api 활용 장소 정보 DB저장 insert문 실행 중에 이런 오류가 뜹니다 ㅠㅠ

dbhelper

void addLocation(String PLACENAME, String CLASSIFY, Double LAT, Double RONG, String ADD)
{
    SQLiteDatabase db = this.getWritableDatabase();
    ContentValues cv = new ContentValues();

    cv.put(COLUMN_PN, PLACENAME);
    cv.put(COLUMN_CL, CLASSIFY);
    cv.put(COLUMN_LAT, LAT);
    cv.put(COLUMN_LONG, RONG);
    cv.put(COLUMN_ADD, ADD);
    long result = db.insert(TABLE_NAME, null, cv);
    if (result == -1)
    {

        Toast.makeText(context, "Failed", Toast.LENGTH_SHORT).show();
    }
    else
    {
        Toast.makeText(context, "데이터 추가 성공", Toast.LENGTH_SHORT).show();
    }
}

mainactivity

addmarker.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        dialogView=(LinearLayout) View.inflate(MainActivity.this, R.layout.dialog, null);
        AlertDialog.Builder dlg = new AlertDialog.Builder(MainActivity.this);
        dlg.setTitle("마커 추가");
        dlg.setView(dialogView);
        
        dlg.setPositiveButton("확인", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                DataBaseHelper dbh = new DataBaseHelper(MainActivity.this);
                dbh.addLocation(PLACENAME.getText().toString(), COLUMN_CL.getText().toString(),COLUMN_LAT,COLUMN_LONG,COLUMN_ADD.getText().toString());
                dialog.dismiss();
            }
        });
        dlg.show();
    }
});

에러코드

java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference
        at com.example.ex.MainActivity$3$1.onClick(MainActivity.java:204)
        at androidx.appcompat.app.AlertController$ButtonHandler.handleMessage(AlertController.java:167)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loopOnce(Looper.java:201)
        at android.os.Looper.loop(Looper.java:288)
        at android.app.ActivityThread.main(ActivityThread.java:7839)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)

onCreate

PLACENAME = findViewById(R.id.PLACENAME);
COLUMN_CL = findViewById(R.id.COLUMN_CL);
COLUMN_ADD = findViewById(R.id.COLUMN_ADD);