所以我想在我的应用程序中添加一个计算器。用户将首先单击适用于英制和公制单位的 RadioButton，然后根据用户单击的单选按钮，将出现其中一种布局。
如您所知，英制单位有英尺和英寸，为此我需要两个 EditText，但公制单位只需要一个。
这就是我想要的，在同一 Activity 中的布局之间切换以避免使用 fragment 。
有什么想法吗？
编辑
xml文件
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="10dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="10dp"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="hr.app.liftme.liftmehr.KalkulatoriBFMan"
tools:showIn="@layout/activity_kalkulatori_bfman"
android:orientation="vertical">
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:foreground="?android:attr/selectableItemBackground"
android:clickable="false"
android:id="@+id/Osnove5"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
card_view:cardCornerRadius="2dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_weight="1"
android:elevation="50dp"
card_view:cardBackgroundColor="#ffffff"
android:layout_marginBottom="10dp">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/linearLayout28"
android:layout_marginBottom="20dp"
android:layout_marginTop="55dp"
android:padding="7dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/bf_uvodno"
android:id="@+id/textView140"
android:textStyle="bold" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/bf_tekst_upute"
android:id="@+id/textView141"
android:textColor="#424242" />
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:foreground="?android:attr/selectableItemBackground"
android:clickable="false"
android:id="@+id/Drugo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
card_view:cardCornerRadius="2dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_weight="1"
android:layout_marginBottom="10dp"
android:elevation="50dp"
card_view:cardBackgroundColor="#ffffff">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/linearLayout27"
android:layout_below="@+id/linearLayout28"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:padding="7dp">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/bf_radio_naslov"
android:id="@+id/textView3"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RadioGroup
android:layout_width="match_parent"
android:layout_height="match_parent">
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radioButtonBFZeneCmKg"
android:text="@string/bf_radio2"
android:onClick="radioZeneCmKgClicked"
android:checked="false" />
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radioButtonBFZeneFtLb"
android:text="@string/bf_radio1"
android:onClick="radioZeneBFFtLbClicked"
android:checked="false" />
</RadioGroup>
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/bf_edit_tezina"
android:id="@+id/textView133"
android:textStyle="bold" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="@+id/editTezinaBF"
android:hint="@string/bf_edit_tezina_hint_z"
android:layout_marginBottom="5dp" />
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/LayoutVisinaMetric">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/bf_edit_visina"
android:id="@+id/textViewVisinaMetric"
android:textStyle="bold" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="@+id/editVisinaBF"
android:hint="@string/bf_edit_visina_hint_z"
android:layout_marginBottom="5dp" />
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/LayoutVisinaImperial">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/bf_feetinch_naslov"
android:id="@+id/textViewVisinaImperial"
android:textStyle="bold" />
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="@+id/editTextVisinaFT"
android:layout_weight="1"
android:hint="@string/bf_radio1_hint1" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="@+id/editTextVisinaINC"
android:layout_weight="1"
android:hint="@string/bf_radio1_hint2" />
</LinearLayout>
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/bf_edit_struk"
android:id="@+id/textView135"
android:textStyle="bold" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="@+id/editStrukBF"
android:hint="@string/bf_edit_struk_hint_z"
android:layout_marginBottom="5dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/bf_edit_bokovi"
android:id="@+id/textView136"
android:textStyle="bold" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="@+id/editBokoviBF"
android:hint="@string/bf_edit_bokovi_hint_z"
android:layout_marginBottom="5dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/bf_edit_vrat"
android:id="@+id/textView137"
android:textStyle="bold" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="@+id/editVratBF"
android:hint="@string/bf_edit_vrat_hint_z"
android:layout_marginBottom="5dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/bf_edit_godine"
android:id="@+id/textView138"
android:textStyle="bold" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="@+id/editGodineBF"
android:hint="@string/bf_edit_godine_hint_z"
android:layout_marginBottom="15dp" />
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/linearLayout27"
android:layout_marginBottom="20dp"
android:id="@+id/linearLayout29">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/bf_btn_izracunaj"
android:id="@+id/btnIzracunajBF"
android:layout_gravity="center_horizontal"
android:background="#424242"
android:textColor="#ffffff"
android:layout_marginBottom="10dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/bf_tekst_rezultat"
android:id="@+id/textView139"
android:layout_gravity="center_horizontal" />
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:id="@+id/textRezultatBF"
android:layout_gravity="center_horizontal" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/bf_rezultat"
android:id="@+id/textView152" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:foreground="?android:attr/selectableItemBackground"
android:clickable="false"
android:id="@+id/Osnove3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
card_view:cardCornerRadius="2dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_weight="1"
android:elevation="50dp"
card_view:cardBackgroundColor="#ffffff">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:layout_below="@+id/linearLayout27"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:padding="7dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/bf_tekst_tumacenje"
android:id="@+id/textView142"
android:gravity="center_horizontal"
android:layout_marginBottom="5dp"
android:textStyle="bold" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/bf_tumacenje_rezultat_z"
android:id="@+id/textView143"
android:gravity="center_horizontal"
android:textColor="#424242" />
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
</ScrollView>
java
public class KalkulatoriBFMan extends AppCompatActivity {
EditText editTezina, editVisina, editStruk, editBokovi, editVrat, editGodine, editVisinaFT, editVisinaINC;
Button btnIzracunajBF;
TextView textRezultatBF, textVisinaMetric, textVisinaImperial;
LinearLayout imperial, metric;
public void radioZeneCmKgClicked(View view){
boolean checked = ((RadioButton) view).isChecked();
switch (view.getId()){
case R.id.radioButtonBFZeneCmKg:
if (checked)
editVisina.setVisibility(View.VISIBLE);
imperial.setVisibility(View.GONE);
btnIzracunajBF.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v){
// IMPERIAL FORMULA
//Body Fat (women) = 495 / (1.29579 - .35004 * log10(Waist + Hip - Neck) + 0.22100 * log10(Height)) - 450
double prvoPolje = Double.parseDouble(editTezina.getText().toString());
double drugoPolje = Double.parseDouble(editVisina.getText().toString());
double trecePolje = Double.parseDouble(editStruk.getText().toString());
double cetvrtoPolje = Double.parseDouble(editBokovi.getText().toString());
double petoPolje = Double.parseDouble(editVrat.getText().toString());
double sestoPolje = Double.parseDouble(editGodine.getText().toString());
double rezultat = 0;
rezultat = 495 / (1.0324 - 0.19077 * Math.log10(trecePolje - petoPolje) + 0.15456 * Math.log10(drugoPolje)) - 450;
rezultat = Math.round(rezultat * 100.0) / 100.0;
textRezultatBF.setText(Double.toString(rezultat) + " %");
}
});
break;
}
}
public void radioZeneBFFtLbClicked(View view) {
boolean checked = ((RadioButton) view).isChecked();
switch (view.getId()) {
case R.id.radioButtonBFZeneFtLb:
if (checked)
editVisinaFT.setVisibility(View.VISIBLE);
metric.setVisibility(View.GONE);
btnIzracunajBF.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v){
// IMPERIAL FORMULA
//Body Fat (men) = 495 / (1.29579 - .35004 * log10(Waist - Neck) + 0.22100 * log10(Height)) - 450
double prvoPolje = Double.parseDouble(editTezina.getText().toString());
double drugoPolje = Double.parseDouble(editVisinaFT.getText().toString());
double trecePolje = Double.parseDouble(editStruk.getText().toString());
double cetvrtoPolje = Double.parseDouble(editBokovi.getText().toString());
double petoPolje = Double.parseDouble(editVrat.getText().toString());
double sestoPolje = Double.parseDouble(editGodine.getText().toString());
double sedmoPolje = Double.parseDouble(editVisinaINC.getText().toString());
double rezultat = 0;
rezultat = 495 / (1.29579 - 0.35004 * Math.log10(trecePolje - petoPolje) + 0.22100 * Math.log10(((drugoPolje * 12) + sedmoPolje))) - 450;
rezultat = Math.round(rezultat * 100.0) / 100.0;
textRezultatBF.setText(Double.toString(rezultat) + " %");
}
});
break;
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_kalkulatori_bfwoman);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
Intent intent = getIntent();
editTezina = (EditText) findViewById(R.id.editTezinaBF);
editVisina = (EditText) findViewById(R.id.editVisinaBF);
editStruk = (EditText) findViewById(R.id.editStrukBF);
editBokovi = (EditText) findViewById(R.id.editBokoviBF);
editVrat = (EditText) findViewById(R.id.editVratBF);
editGodine = (EditText) findViewById(R.id.editGodineBF);
editVisinaFT = (EditText) findViewById(R.id.editTextVisinaFT);
editVisinaINC = (EditText) findViewById(R.id.editTextVisinaINC);
textVisinaImperial = (TextView) findViewById(R.id.textViewVisinaImperial);
textVisinaMetric = (TextView) findViewById(R.id.textViewVisinaMetric);
imperial = (LinearLayout) findViewById(R.id.LayoutVisinaImperial);
metric = (LinearLayout) findViewById(R.id.LayoutVisinaMetric);
btnIzracunajBF = (Button) findViewById(R.id.btnIzracunajBF);
textRezultatBF = (TextView) findViewById(R.id.textRezultatBF);
}
}
请注意，我通过将可见性设置为“GONE”解决了空白问题，但是当我打开 Activity 时，会出现英制和公制的两个 EditText。我希望它们在用户选择一个 RadioButton 之前都是不可见的
最佳答案
要定义按钮的单击事件处理程序，请添加 android:onClick属性为<RadioButton> XML 布局中的元素。此属性的值必须是您要调用以响应单击事件的方法的名称。然后，托管布局的 Activity 必须实现相应的方法。
例如，这里有几个 RadioButton 对象:
<?xml version="1.0" encoding="utf-8"?>
<RadioGroup xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RadioButton android:id="@+id/radio_pirates"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/pirates"
android:onClick="onRadioButtonClicked"/>
<RadioButton android:id="@+id/radio_ninjas"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/ninjas"
android:onClick="onRadioButtonClicked"/>
</RadioGroup>
在承载此布局的 Activity 中，以下方法处理两个单选按钮的单击事件:
public void onRadioButtonClicked(View view) {
// Is the button now checked?
boolean checked = ((RadioButton) view).isChecked();
// Check which radio button was clicked
switch(view.getId()) {
case R.id.imperial:
if (checked)
EditBox1.setVisibility(Visible)
break;
case R.id.metrics:
if (checked){
EditBox1.setVisibility(Visible)
EditBox2.setVisibility(Visible)
}
break;
}
}
来源:http://developer.android.com/guide/topics/ui/controls/radiobutton.html
关于java - RadioButton 在布局之间切换，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/35504779/