ios - iOS单选按钮的实现

Question

我正在尝试在我的项目中实现单选按钮。由于现成的控件不可用，因此我创建了简单的按钮并设置了它们的图像，单击它们时图像会发生变化。现在我希望当我点击它们时，应该将适当的值分配给字符串，这些字符串又会更新到 sqlite 数据库中。代码如下:

婚姻状况单选按钮的方法:

-(IBAction)maritalStatusRadioButton:(id)sender
{


    if(mMaritalRadioButton.isHighlighted)
    {

        [self radioButtonClick:sender];
    }
}

男/女单选按钮的方法:

-(IBAction)genderMaleRadioButton:(id)sender
{
    if(mMaleRadioButton.isHighlighted){
        mFemaleRadioButton.enabled = NO;

       // [sender setImage: [UIImage imageNamed:@"Radio_button_on.png"]forState:UIControlStateNormal];
        [self radioButtonClick:sender];
    }else if (mFemaleRadioButton.isHighlighted){
        mMaleRadioButton.enabled = NO;
        [self radioButtonClick:sender];

    }

radioButtonClick 方法:

-(void) radioButtonClick:(id)sender
{
     [sender setImage: [UIImage imageNamed:@"Radio_button_on.png"]forState:UIControlStateNormal];
}

更新方法:

-(IBAction)saveUserProfile
{
    sqlite3_stmt *statement;
    const char *dbpath = [mDatabasePath UTF8String];

    if (sqlite3_open(dbpath, &mDiary) == SQLITE_OK)
    {

        NSString *marital = [[NSString alloc]init];  //holds marital status of user
        NSString  *gender = [[NSString alloc]init];  //used to determine if user has entered male or female gender

        if (mMaritalRadioButton.isHighlighted) {
            marital = [NSString stringWithFormat:@"Married"];
        }
        else{
            marital  = [NSString stringWithFormat:@"Unmarried"];
        } 
        if(mMaleRadioButton.isHighlighted)
        {
            gender = [NSString stringWithFormat:@"Male"];
        }else{
            gender = [NSString stringWithFormat:@"Female"];
        }
        NSString *dummy = [[NSString alloc] initWithFormat:@"%@",self.getUserName];
        //NSLog(@"dummy string is %@",dummy);

        NSString *updateSQL = [NSString stringWithFormat:
                               @"UPDATE USERDETAIL SET mUname = \"%@\", mImage = \"%@\", mGender = \"%@\", mDob = \"%@\", mEmail = \"%@\", mAddress = \"%@\", mLatitude = \"%@\", mLongitude = \"%@\",mMaritalStatus = \"%@\" WHERE mUserName = \"%@\" ", mUname.text, @"", gender, @"", mEmail.text, mAddress.text, mLatitude.text,mLongitude.text,marital, dummy];
               const char *update_stmt = [updateSQL UTF8String];
        sqlite3_prepare_v2(mDiary, update_stmt,
                           -1, &statement, NULL);
        if (sqlite3_step(statement) == SQLITE_DONE)
       {
            mStatus.text = @"user profile updated";
            mUname.text = @"";
           // mPassword.text = @"";
            //mImage.text = @"";
            mGender.text = @"";
            //mDob.date = @"";
            mEmail.text = @"";
            mAddress.text = @"";
            //mMaritalStatus.text = @"";
            mLatitude.text = @"";
            mLongitude.text = @"";


        } else {
            mStatus.text = @"Failed to update user profile";
        }

        sqlite3_finalize(statement);
        sqlite3_close(mDiary);
    }

}

问题是在 saveUserProfile 方法中，条件 mMaritalRadioButton.isHighlighted 和 mMaleRadioButton.isHighlighted 永远不会为真。因此只有 Female 和 Unmarried 被存储。 Male 和 Married 从不存储。图像更改没有问题。任何人都可以帮助解决它吗？ 提前致谢。

Answer 1

//Radio Button : Tap on this each time will toggle its state.


//// Initialization...

UIButton *radioButton = [[UIButton alloc] initWithFrame:CGRectMake(10,10,100,100)];

[radioButton setImage:[UIImage imageNamed:@"unSelected.png"] forState:UIControlStateNormal];

[radioButton setImage:[UIImage imageNamed:@"selected.png"] forState:UIControlStateSelected];


////// target method 

-(void)on_click_button:(id)sender
{
  UIButton *button = (UIButton*)sender;

  [button setSelected:!button.isSelected];

  if(button.isSelected)
  {
     //Write your code on selected state here...
  }
  else
     {
        //Write your code on un-selected state here...
     }

}