Android NumberFormatException:无效的int

你好，因为这个原因，我在插入数据时遇到了问题。 这是我的密码：

addItem.java

public class AddItemsActivity extends AppCompatActivity implements View.OnClickListener{


SQLiteLocalDatabase sqLiteLocalDatabase;

    EditText editTextFullName;
    EditText editTextAddress;
    EditText editTextEmailAdd;
    EditText editTextPassword;
    EditText editTextIDNO;
    Button btnSave;
    Button btnUpdate;
    Button btnSearch;
    Button btnDelete;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_add_items);

    sqLiteLocalDatabase = new SQLiteLocalDatabase(AddItemsActivity.this);

    //CALL FUNCTION
    setUpWidgets();
}

public void setUpWidgets(){
    editTextFullName = (EditText) findViewById(R.id.editTextFullName);
    editTextAddress = (EditText) findViewById(R.id.Location);
    editTextEmailAdd = (EditText) findViewById(R.id.editTextEmailAddress);
    editTextPassword = (EditText) findViewById(R.id.editTextPassword);
    editTextIDNO = (EditText) findViewById(R.id.editTextID);

    btnSave = (Button) findViewById(R.id.buttonAddContacts);
    btnSave.setOnClickListener(this);
    btnUpdate = (Button) findViewById(R.id.buttonUpdate);
    btnUpdate.setOnClickListener(this);
    btnSearch = (Button) findViewById(R.id.buttonSearch);
    btnSearch.setOnClickListener(this);
    btnDelete = (Button) findViewById(R.id.buttonDelete);
    btnDelete.setOnClickListener(this);

}

@Override
public void onClick(View v) {



    switch (v.getId()){
        case R.id.buttonAddContacts:
            //IF result == -1
            long result = sqLiteLocalDatabase.insert(Integer.parseInt(getValue(editTextIDNO)),
                                        getValue(editTextFullName),
                                        getValue(editTextAddress),
                                        getValue(editTextEmailAdd),
                                        getValue(editTextPassword)
                                      );
            if(result == -1){
                Toast.makeText(AddItemsActivity.this, "Error",Toast.LENGTH_LONG).show();
            }else {
                Toast.makeText(AddItemsActivity.this, "Sucess Id:"+result,Toast.LENGTH_LONG).show();
            }

            break;

        case R.id.buttonUpdate:

            long update = sqLiteLocalDatabase.update(Integer.parseInt(getValue(editTextIDNO)),
                    getValue(editTextFullName),
                    getValue(editTextAddress),
                    getValue(editTextEmailAdd),
                    getValue(editTextPassword)
            );
            if(update == 0){
                Toast.makeText(AddItemsActivity.this, "Error Updating",Toast.LENGTH_LONG).show();
            }else
                if(update == -1){
                    Toast.makeText(AddItemsActivity.this, "Updating",Toast.LENGTH_LONG).show();
                }else {
                Toast.makeText(AddItemsActivity.this, "Error All data updated Id:"+update,Toast.LENGTH_LONG).show();
            }
            break;

        case R.id.buttonSearch:
            break;

        case R.id.buttonDelete:

            long delete = sqLiteLocalDatabase.delete(Integer.parseInt(getValue(editTextIDNO)));
            if(delete == 0) {
                Toast.makeText(AddItemsActivity.this, "Error Delete", Toast.LENGTH_LONG).show();
            } else
            {
                Toast.makeText(AddItemsActivity.this, "Success Delete", Toast.LENGTH_LONG).show();

            }
            break;


    }
}

public String getValue(EditText editText){
    return  editText.getText().toString().trim();

}

@Override
protected void onStart() {
    super.onStart();
    sqLiteLocalDatabase.setUpDb();

}

@Override
protected void onStop() {
    super.onStop();
    sqLiteLocalDatabase.closeTransactionDb();
}
}

对于数据库

public class SQLiteLocalDatabase extends SQLiteOpenHelper{


private SQLiteDatabase sqLiteDatabase;
private static final String DB_NAME = "project.db";
private static final int VERSION = 1;


public static final String DB_TABLE = " user ";
public static final String ID = " _id ";
public static final String FULL_NAME = " fullname ";
public static final String LOCATION = " location ";
public static final String EMAIL_ADD = " email ";
public static final String PASSWORD = " password ";


public SQLiteLocalDatabase(Context context) {
    super(context, DB_NAME, null, VERSION);
}

@Override
public void onCreate(SQLiteDatabase db) {
    String queryTable = " CREATE TABLE " + DB_TABLE + "( " + ID + " INTEGER PRIMARY KEY AUTOINCREMENT, "+ FULL_NAME + " TEXT NOT NULL, " + LOCATION + " TEXT NOT NULL, " + EMAIL_ADD + " TEXT NOT NULL, " + PASSWORD + " TEXT NOT NULL" + " ) ";

    db.execSQL(queryTable);
}

public void setUpDb(){
    //TO OPEN DATABASE - RE-WRITABLE
    sqLiteDatabase  = getWritableDatabase();

}

public void closeTransactionDb(){
    //CLOSE DB IF OPEN
    if(sqLiteDatabase != null){
        sqLiteDatabase.close();
    }
}

//INSERT DATA
public long insert(int id,String fullname, String location,String email,String password){

    //CONTENT VALUE contains name-value-pairs
    ContentValues values = new ContentValues();

    if(id != -1) {
        values.put(ID,id);
        values.put(FULL_NAME, fullname);
        values.put(LOCATION, location);
        values.put(EMAIL_ADD, email);
        values.put(PASSWORD, password);
    }
    //Object Table, column, values
    return sqLiteDatabase.insert(DB_NAME, null, values);


}

//UPDATE
public long update(int id, String fullname,String location,String email, String password){
    //CONTENT VALUE contains name-value-pairs
    ContentValues values = new ContentValues();

    values.put(FULL_NAME,fullname);
    values.put(LOCATION,location);
    values.put(EMAIL_ADD,email);
    values.put(PASSWORD,password);

    //WHERE
    String where = ID + "="+id;

    //Object Table, values, destination-id
    return sqLiteDatabase.update(DB_NAME, values, where, null);
}

//DELETE
//
public long delete(int id){
    //WHERE
    String where = ID + "="+id;

    //Object Table, values, destination-id
    return sqLiteDatabase.delete(DB_NAME, where, null);
}

public Cursor getAllRecords(){

    String queryDB = "SELECT * FROM "+DB_TABLE;

    return sqLiteDatabase.rawQuery(queryDB,null);
}


@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

}

}

附加xml

<EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    **android:inputType="text"**
    android:drawableLeft="@drawable/ic_action_icon"
    android:hint="ID no, you can leave it!"
    android:textColorHint="@color/textPrimaryColor"
    android:ems="10"
    android:id="@+id/editTextID"
    android:layout_below="@+id/editTextPassword"
    android:layout_centerHorizontal="true"
    android:layout_marginLeft="@dimen/activity_horizontal_margin"
    android:layout_marginRight="@dimen/activity_horizontal_margin"/>

editText.toString（）

不是输入到

editText

中的字符串。您需要使用：

---

我得到了java空异常，并指向这个方法。以及我的long insert=sqLiteDatabase.insert（……）；：（java.lang.NullPointerException位于project.app.optional.ccs.mobileApproject.activities.AddItemsActivity.getValue（AddItemsActivity.java:117）在project.app.optional.ccs.mobileApproject.activities.AddItemsActivity.onClick（AddItemsActivity.java:65）中，我的问题不是返回null的位置，而是null是什么-is

editText

null？is

editText.getText（）

null？是否为

sqLiteDatabase

null？这些都是与您的原始问题无关的潜在问题（'为什么不在文本中输入？'））这仍然会导致你的应用程序失败。很抱歉，回复晚了，我要去学校。在我的sqLiteDatabase=ID INTEGER主键自动递增中，全名文本不为NULL，位置文本不为NULL，电子邮件添加文本不为NULL，密码文本不为NULL。ID在EditText中是可选的，如果用户不输入值，我的数据库中的ID将为空我在下面检查它们是否为NULL，我通过.setText（“”）为每个EditText设置了一个值；对于Id=-1，仍然会得到一个错误。

NumberFormatException: Invalid int: 

//CREATE METHOD for EditText
public String getValue(EditText editText){
    return editText.getText().toString().trim();
}