Android “从”+塔布罗阿迪； Cursor Cursor=cardatabase.rawQuery（selectQuery，null）； if（cursor.moveToFirst（））{ 做{ labels.add（cursor.getString（0））； }while（cursor.moveToNext（））； } cursor.close（）； cardatabase.close（）； 退货标签； } //Spinner'da seçilen aracısiler。 公共车辆（字符串cname）{ SQLiteDatabase cardatabase=this.getWritableDatabase（）； String deleteQuery=“从“+TABLO_ADI+”中删除，其中“+SATIR_ADI+”='“+cname+””； execSQL（deleteQuery）； Log.d（LOGCAT，“Araçsilindi”）； cardatabase.close（）； } }

更改insertCar方法以返回布尔结果。就像这样：

   public boolean insertCar(String name,String model,String brand,String year,String km){
    SQLiteDatabase cardatabase = this.getWritableDatabase();
    String searchQuery = "SELECT " + SATIR_ID +","+ SATIR_ADI + " FROM " + TABLO_ADI + " WHERE " + SATIR_ADI +" = '" + name.toString()+"'" ;
    Cursor cursor = cardatabase.rawQuery(searchQuery, null);
    boolean c;

    if (cursor.getCount() == 0){
        ContentValues values = new ContentValues();
        values.put(SATIR_ADI,name);
        values.put(SATIR_MODEL,model);
        values.put(SATIR_MARKA,brand);
        values.put(SATIR_YIL,year);
        values.put(SATIR_KM,km);
        cardatabase.insert(TABLO_ADI, null, values);
        cardatabase.close();
        Log.d(LOGCAT, "Veri kaydedildi.");
        c=true;

    }
    else{
        Log.d(LOGCAT, "Aynı isim var");
        c=false;
    }
    cursor.close();
    cardatabase.close();
    return c;
}`

还有你的

dbyakit.insertYakit

要插入RTCar，请尝试以下操作：

    if (dbyakit.insertYakit(selectedCarName, alinanLt.getText().toString(), alinanYakitdeger.getText().toString(), aracKm.getText().toString(), dayOfMonth, monthOfYear, year)) 
      // Case return true
      Toast.makeText(rootView.getContext(), "Yout text here", Toast.LENGTH_LONG).show();
    else
      // Case return false
      Toast.makeText(rootView.getContext(), "Yout text here", Toast.LENGTH_LONG).show();

---

干杯

请编辑问题，详细说明您迄今为止尝试插入的祝酒词。我想是的。很抱歉回答了这么长时间。如果这对您有帮助，请帮助我提高声誉。：）

   public boolean insertCar(String name,String model,String brand,String year,String km){
    SQLiteDatabase cardatabase = this.getWritableDatabase();
    String searchQuery = "SELECT " + SATIR_ID +","+ SATIR_ADI + " FROM " + TABLO_ADI + " WHERE " + SATIR_ADI +" = '" + name.toString()+"'" ;
    Cursor cursor = cardatabase.rawQuery(searchQuery, null);
    boolean c;

    if (cursor.getCount() == 0){
        ContentValues values = new ContentValues();
        values.put(SATIR_ADI,name);
        values.put(SATIR_MODEL,model);
        values.put(SATIR_MARKA,brand);
        values.put(SATIR_YIL,year);
        values.put(SATIR_KM,km);
        cardatabase.insert(TABLO_ADI, null, values);
        cardatabase.close();
        Log.d(LOGCAT, "Veri kaydedildi.");
        c=true;

    }
    else{
        Log.d(LOGCAT, "Aynı isim var");
        c=false;
    }
    cursor.close();
    cardatabase.close();
    return c;
}`

    if (dbyakit.insertYakit(selectedCarName, alinanLt.getText().toString(), alinanYakitdeger.getText().toString(), aracKm.getText().toString(), dayOfMonth, monthOfYear, year)) 
      // Case return true
      Toast.makeText(rootView.getContext(), "Yout text here", Toast.LENGTH_LONG).show();
    else
      // Case return false
      Toast.makeText(rootView.getContext(), "Yout text here", Toast.LENGTH_LONG).show();