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그래서 기본적으로 이것은 매우 간단합니다. 사용자가 식사/서비스에 대한 정보를 입력 할 수있는 팁 계산기 응용 프로그램을 만들고 계산 버튼 옆의 텍스트 필드에서 결과를 계산해야한다고 가정합니다. 내가 가지고있는 문제는 "팁 선택 :"옵션에서 하나의 라디오 버튼 만 선택하는 것입니다. 내 응용 프로그램에 RadioGroup 위젯을 추가하려했지만 내 라디오 버튼을 따르는 방법을 모르거나 현재 라디오 버튼의 크기와 위치에 영향을주지 않으면 서 응용 프로그램에 라디오 그룹을 추가하는 방법을 알지 못합니다. . 여기에 내 응용 프로그램과 같은 모습의 시각이다 : http://tinypic.com/r/yc46t/8라디오 버튼을 선택하는 데 문제가 있습니다
MyActivity.java
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
final EditText enteredFoodAmount = (EditText)findViewById(R.id.foodAmount);
final EditText enteredDrinkAmount = (EditText)findViewById(R.id.drinkAmount);
final EditText enteredTaxAmount = (EditText)findViewById(R.id.taxAmount);
final RadioButton tenSelected = (RadioButton)findViewById(R.id.tenPercent);
final RadioButton fifteenSelected = (RadioButton)findViewById(R.id.fifteenPercent);
final RadioButton twentySelected = (RadioButton)findViewById(R.id.twentyPercent);
final TextView displayedFoodAmount = (TextView)findViewById(R.id.theFoodAmount);
final TextView displayedDrinkAmount = (TextView)findViewById(R.id.theDrinkAmount);
final TextView displayedTaxAmount = (TextView)findViewById(R.id.theTaxAmount);
final TextView displayedTipAmount = (TextView)findViewById(R.id.theTipAmount);
final Button calculateButton = (Button)findViewById(R.id.calculate);
final TextView displayedCalculation = (TextView)findViewById(R.id.calculatedAmount);
final RadioGroup radiogroup = (RadioGroup) findViewById(R.id.myRadioGroup);
calculateButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
double food = Double.parseDouble(enteredFoodAmount.getText().toString());
double drink = Double.parseDouble(enteredDrinkAmount.getText().toString());
double tax = Double.parseDouble(enteredTaxAmount.getText().toString())/100.0;
double tip;
double calculation;
if (tenSelected.isChecked()){
twentySelected.setChecked(false);
tip = 0.10;
displayedTipAmount.setText(Double.toString(tip * 100.0) + "%");
displayedFoodAmount.setText("$" + Double.toString(food));
displayedDrinkAmount.setText("$" + Double.toString(drink));
displayedTaxAmount.setText(Double.toString(tax * 100.0) + "%");
double myTax = (food + drink) * tax;
double myTip = (food + drink) * tip;
calculation = (food + drink) + myTax + myTip;
displayedCalculation.setText("$" + Double.toString(calculation));
}
else if (twentySelected.isChecked()){
tenSelected.setChecked(false);
tip = 0.20;
displayedTipAmount.setText(Double.toString(tip * 100.0) + "%");
displayedFoodAmount.setText("$" + Double.toString(food));
displayedDrinkAmount.setText("$" + Double.toString(drink));
displayedTaxAmount.setText(Double.toString(tax * 100.0) + "%");
double myTax = (food + drink) * tax;
double myTip = (food + drink) * tip;
calculation = (food + drink) + myTax + myTip;
displayedCalculation.setText("$" + Double.toString(calculation));
}
else if (fifteenSelected.isChecked()){
tip = 0.15;
displayedTipAmount.setText(Double.toString(tip * 100.0) + "%");
displayedFoodAmount.setText("$"+ Double.toString(food));
displayedDrinkAmount.setText("$" + Double.toString(drink));
displayedTaxAmount.setText(Double.toString(tax * 100.0) + "%");
double myTax = (food + drink) * tax;
double myTip = (food + drink) * tip;
calculation = (food + drink) + myTax + myTip;
displayedCalculation.setText("$" + Double.toString(calculation));
}
activity_my.xml 라디오 버튼에은을 radioGroup의 내부 아이들해야
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".MyActivity"
android:id="@+id/layoutt">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/food_total"
android:id="@+id/foodTotal"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/drink_total"
android:id="@+id/drinkTotal"
android:layout_below="@+id/foodTotal"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="38dp"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="@+id/foodAmount"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="@+id/drinkAmount"
android:layout_alignBottom="@+id/drinkTotal"
android:layout_alignLeft="@+id/foodAmount"
android:layout_alignStart="@+id/foodAmount"/>
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/ten_percent"
android:id="@+id/tenPercent"
android:layout_toEndOf="@+id/drinkTotal"
android:layout_above="@+id/fifteenPercent"
android:layout_toRightOf="@+id/drinkTotal"/>
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/fifteen_percent"
android:id="@+id/fifteenPercent"
android:layout_toEndOf="@+id/drinkTotal"
android:layout_centerVertical="true"
android:layout_alignLeft="@+id/tenPercent"
android:layout_alignStart="@+id/tenPercent"
android:layout_toRightOf="@+id/drinkTotal"/>
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/twenty_percent"
android:id="@+id/twentyPercent"
android:layout_toEndOf="@+id/drinkTotal"
android:layout_below="@+id/fifteenPercent"
android:layout_alignLeft="@+id/fifteenPercent"
android:layout_alignStart="@+id/fifteenPercent"
android:layout_toRightOf="@+id/drinkTotal"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/calculate"
android:id="@+id/calculate"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:id="@+id/calculatedAmount"
android:layout_alignBottom="@+id/calculate"
android:layout_alignLeft="@+id/drinkAmount"
android:layout_alignStart="@+id/drinkAmount"
android:layout_alignTop="@+id/calculate"
android:textSize="22sp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Total Tax"
android:id="@+id/tax"
android:layout_marginTop="29dp"
android:layout_below="@+id/drinkAmount"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="@+id/taxAmount"
android:layout_alignBottom="@+id/tax"
android:layout_alignLeft="@+id/drinkAmount"
android:layout_alignStart="@+id/drinkAmount"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/select_tip"
android:id="@+id/selectTip"
android:layout_above="@+id/tenPercent"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="@string/the_food"
android:id="@+id/theFood"
android:layout_marginTop="37dp"
android:layout_below="@+id/twentyPercent"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="@string/the_drink"
android:id="@+id/theDrink"
android:layout_below="@+id/theFood"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="35dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="@string/the_tax"
android:id="@+id/theTax"
android:layout_alignTop="@+id/theFood"
android:layout_toRightOf="@+id/twentyPercent"
android:layout_toEndOf="@+id/twentyPercent"
android:layout_marginLeft="44dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="@string/the_tip"
android:id="@+id/theTip"
android:layout_toEndOf="@+id/twentyPercent"
android:layout_alignTop="@+id/theDrink"
android:layout_alignLeft="@+id/theTax"
android:layout_alignStart="@+id/theTax"
android:layout_toRightOf="@+id/twentyPercent"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/theFoodAmount"
android:layout_toStartOf="@+id/calculatedAmount"
android:layout_toRightOf="@+id/calculatedAmount"
android:layout_toLeftOf="@+id/calculatedAmount"
android:text="--"
android:layout_alignTop="@+id/theFood"
android:layout_alignLeft="@+id/theDrinkAmount"
android:layout_alignStart="@+id/theDrinkAmount"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="--"
android:id="@+id/theDrinkAmount"
android:layout_toEndOf="@+id/theDrink"
android:layout_alignTop="@+id/theDrink"
android:layout_toRightOf="@+id/theDrink"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="--"
android:id="@+id/theTaxAmount"
android:layout_toEndOf="@+id/theTax"
android:layout_alignTop="@+id/theTax"
android:layout_toRightOf="@+id/theTax"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="--"
android:id="@+id/theTipAmount"
android:layout_toEndOf="@+id/theTip"
android:layout_toLeftOf="@+id/theTip"
android:layout_toStartOf="@+id/theTip"
android:layout_toRightOf="@+id/theTip"
android:layout_alignTop="@+id/theTip"
android:layout_alignRight="@+id/calculatedAmount"
android:layout_alignEnd="@+id/calculatedAmount"/>
<RadioGroup
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignTop="@+id/tenPercent"
android:layout_toRightOf="@+id/selectTip"
android:layout_toEndOf="@+id/selectTip"
android:layout_above="@+id/theFood"
android:layout_toLeftOf="@+id/theTip"
android:layout_toStartOf="@+id/theTip"
android:id="@+id/myRadioGroup"
android:baselineAligned="false">
</RadioGroup>
</RelativeLayout>
내가 자신의 위치에 영향을주지 않고 자녀를 어떻게 키울 수 있는지 알고 있습니까? – Chris
RadioGroup을 이동할 수 있습니다. 내 대답은 시각적 인 것, 계층적인 것만 관련된 것이 아닙니다. – Karakuri