如何检查菜单中选择了哪个选项？
[英]How can I check which option is selected in menu?
问题描述
I'm new writing. 
我是新写作。 I have a menu with a group, in the group I have android:checkableBehavior="single" inside there are two options to make visible or invisible a include layout inside of the main layout. 我有一个带有组的菜单，在该组中，我有android:checkableBehavior="single" ，在主布局内有两个选项可以使包含布局可见或不可见。
public class Main extends Activity {
private String settingSet = "kgcm";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_main);
//Creo el spinner de sexo
final Spinner spinner1=(Spinner)findViewById(R.id.spinnerSexo);
ArrayAdapter<CharSequence> adapter1 = ArrayAdapter.createFromResource(this, R.array.spinnerSexo, android.R.layout.simple_spinner_item);
adapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner1.setAdapter(adapter1);
//Creo el spinner de edad
Spinner spinner2=(Spinner)findViewById(R.id.spinnerEdad);
ArrayAdapter<CharSequence> adapter2 = ArrayAdapter.createFromResource(this, R.array.spinnerEdad, android.R.layout.simple_spinner_item);
adapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner2.setAdapter(adapter2);
//Configuracion del boton
Button bCalcular = (Button)findViewById(R.id.bcalcular);
bCalcular.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String sexo = spinner1.getSelectedItem().toString();
String imc1 = formulaDatos(spinner1);
if (sexo.equals("Hombre"))
{
//Ficha de Hombre
colocarIMCH(imc1);
rellenarHombre(imc1);
}
else{
//Ficha de Mujer
colocarIMCM(imc1);
rellenarMujer(imc1);
}
}
});
}
protected void rellenarMujer(String imc1) {
if (imc1.compareTo("18.50") < 0){
bajoPesoM();
}
else{
if(imc1.compareTo("24.90") < 0){
normalM();
}
else{
if(imc1.compareTo("29.90") < 0){
sobrePesoM();
}
else{
if(imc1.compareTo("34.90") < 0){
obesidad1M();
}
else{
if(imc1.compareTo("39.9") < 0){
obesidad2M();
}
else{
obesidad3M();
}
}
}
}
}
}
protected void rellenarHombre(String imc1) {
if (imc1.compareTo("18.50") < 0){
bajoPeso();
}
else{
if(imc1.compareTo("24.90") < 0){
normal();
}
else{
if(imc1.compareTo("29.90") < 0){
sobrePeso();
}
else{
if(imc1.compareTo("34.90") < 0){
obesidad1();
}
else{
if(imc1.compareTo("39.9") < 0){
obesidad2();
}
else{
obesidad3();
}
}
}
}
}
}
protected String formulaDatos(Spinner spinner1) {
//configurando los editext para obtener el string
EditText editTextAltura = (EditText)findViewById(R.id.editTextAltura);
EditText editTextPeso = (EditText)findViewById(R.id.editTextPeso);
float altura = Integer.parseInt(editTextAltura.getText().toString());
altura = altura / 100;
float peso = Integer.parseInt(editTextPeso.getText().toString());
float imc = (peso / (altura * altura));
String imc1 = String.format("%.2f", imc);
return imc1;
}
protected void bajoPeso() {
//Colocar un consejo Aleatorio en Hombre TextView4
TextView tv4 = (TextView)findViewById(R.id.textViewH4);
String[] bph = (String[])getResources().getStringArray(R.array.bajoPesoH);
int max = bph.length;
tv4.setText(bph[getRandomNumber(max)]);
//Colocar un consejo Aleatorio deportuvo en Hombre TextView6
TextView tv6 = (TextView)findViewById(R.id.textViewH6);
String[] dph = (String[])getResources().getStringArray(R.array.bajoPesoHD);
int maxd = dph.length;
tv6.setText(dph[getRandomNumber(maxd)]);
}
protected void bajoPesoM() {
//Colocar un consejo Aleatorio en Hombre TextView4
TextView tv4 = (TextView)findViewById(R.id.textViewM4);
String[] bph = (String[])getResources().getStringArray(R.array.bajoP);
int max = bph.length;
tv4.setText(bph[getRandomNumber(max)]);
//Colocar un consejo Aleatorio deportuvo en Hombre TextView6
TextView tv6 = (TextView)findViewById(R.id.textViewM6);
String[] dph = (String[])getResources().getStringArray(R.array.bajoPD);
int maxd = dph.length;
tv6.setText(dph[getRandomNumber(maxd)]);
}
protected void normal() {
//Colocar un consejo Aleatorio en Hombre TextView4
TextView tv4 = (TextView)findViewById(R.id.textViewH4);
String[] bph = (String[])getResources().getStringArray(R.array.normalH);
int max = bph.length;
tv4.setText(bph[getRandomNumber(max)]);
//Colocar un consejo Aleatorio deportuvo en Hombre TextView6
TextView tv6 = (TextView)findViewById(R.id.textViewH6);
String[] dph = (String[])getResources().getStringArray(R.array.normalHD);
int maxd = dph.length;
tv6.setText(dph[getRandomNumber(maxd)]);
}
protected void normalM() {
//Colocar un consejo Aleatorio en MUJER TextView4
TextView tv4 = (TextView)findViewById(R.id.textViewM4);
String[] bph = (String[])getResources().getStringArray(R.array.normal);
int max = bph.length;
tv4.setText(bph[getRandomNumber(max)]);
//Colocar un consejo Aleatorio deportuvo en TextView6
TextView tv6 = (TextView)findViewById(R.id.textViewM6);
String[] dph = (String[])getResources().getStringArray(R.array.normalD);
int maxd = dph.length;
tv6.setText(dph[getRandomNumber(maxd)]);
}
protected void sobrePeso() {
//Colocar un consejo Aleatorio en Hombre TextView4
TextView tv4 = (TextView)findViewById(R.id.textViewH4);
String[] bph = (String[])getResources().getStringArray(R.array.sobreH);
int max = bph.length;
tv4.setText(bph[getRandomNumber(max)]);
//Colocar un consejo Aleatorio deportuvo en Hombre TextView6
TextView tv6 = (TextView)findViewById(R.id.textViewH6);
String[] dph = (String[])getResources().getStringArray(R.array.sobreHD);
int maxd = dph.length;
tv6.setText(dph[getRandomNumber(maxd)]);
}
protected void sobrePesoM() {
//Colocar un consejo Aleatorio en MUJER TextViewM4
TextView tv4 = (TextView)findViewById(R.id.textViewM4);
String[] bph = (String[])getResources().getStringArray(R.array.sobreP);
int max = bph.length;
tv4.setText(bph[getRandomNumber(max)]);
//Colocar un consejo Aleatorio deportuvo en TextViewM6
TextView tv6 = (TextView)findViewById(R.id.textViewM6);
String[] dph = (String[])getResources().getStringArray(R.array.sobrePD);
int maxd = dph.length;
tv6.setText(dph[getRandomNumber(maxd)]);
}
protected void obesidad1() {
//Colocar un consejo Aleatorio en Hombre TextView4
TextView tv4 = (TextView)findViewById(R.id.textViewH4);
String[] bph = (String[])getResources().getStringArray(R.array.ove1H);
int max = bph.length;
tv4.setText(bph[getRandomNumber(max)]);
//Colocar un consejo Aleatorio deportuvo en Hombre TextView6
TextView tv6 = (TextView)findViewById(R.id.textViewH6);
String[] dph = (String[])getResources().getStringArray(R.array.ove1HD);
int maxd = dph.length;
tv6.setText(dph[getRandomNumber(maxd)]);
}
protected void obesidad1M() {
//Colocar un consejo Aleatorio en MUJER TextViewM4
TextView tv4 = (TextView)findViewById(R.id.textViewM4);
String[] bph = (String[])getResources().getStringArray(R.array.ove1);
int max = bph.length;
tv4.setText(bph[getRandomNumber(max)]);
//Colocar un consejo Aleatorio deportuvo en TextViewM6
TextView tv6 = (TextView)findViewById(R.id.textViewM6);
String[] dph = (String[])getResources().getStringArray(R.array.ove1D);
int maxd = dph.length;
tv6.setText(dph[getRandomNumber(maxd)]);
}
protected void obesidad2() {
//Colocar un consejo Aleatorio en Hombre TextView4
TextView tv4 = (TextView)findViewById(R.id.textViewH4);
String[] bph = (String[])getResources().getStringArray(R.array.ove2H);
int max = bph.length;
tv4.setText(bph[getRandomNumber(max)]);
//Colocar un consejo Aleatorio deportuvo en Hombre TextView6
TextView tv6 = (TextView)findViewById(R.id.textViewH6);
String[] dph = (String[])getResources().getStringArray(R.array.ove2HD);
int maxd = dph.length;
tv6.setText(dph[getRandomNumber(maxd)]);
}
protected void obesidad2M() {
//Colocar un consejo Aleatorio en MUJER TextView4
TextView tv4 = (TextView)findViewById(R.id.textViewM4);
String[] bph = (String[])getResources().getStringArray(R.array.ove2);
int max = bph.length;
tv4.setText(bph[getRandomNumber(max)]);
//Colocar un consejo Aleatorio deportuvo en TextView6
TextView tv6 = (TextView)findViewById(R.id.textViewM6);
String[] dph = (String[])getResources().getStringArray(R.array.ove2D);
int maxd = dph.length;
tv6.setText(dph[getRandomNumber(maxd)]);
}
protected void obesidad3() {
//Colocar un consejo Aleatorio en Hombre TextView4
TextView tv4 = (TextView)findViewById(R.id.textViewH4);
String[] bph = (String[])getResources().getStringArray(R.array.ove3H);
int max = bph.length;
tv4.setText(bph[getRandomNumber(max)]);
//Colocar un consejo Aleatorio deportuvo en Hombre TextView6
TextView tv6 = (TextView)findViewById(R.id.textViewH6);
String[] dph = (String[])getResources().getStringArray(R.array.ove3HD);
int maxd = dph.length;
tv6.setText(dph[getRandomNumber(maxd)]);
}
protected void obesidad3M() {
//Colocar un consejo Aleatorio en MUJER TextViewM4
TextView tv4 = (TextView)findViewById(R.id.textViewM4);
String[] bph = (String[])getResources().getStringArray(R.array.ove3);
int max = bph.length;
tv4.setText(bph[getRandomNumber(max)]);
//Colocar un consejo Aleatorio deportuvo en TextViewM6
TextView tv6 = (TextView)findViewById(R.id.textViewM6);
String[] dph = (String[])getResources().getStringArray(R.array.ove3D);
int maxd = dph.length;
tv6.setText(dph[getRandomNumber(maxd)]);
}
protected void colocarIMCH(String imc1) {
//cargar layout que vamos a usar
setContentView(R.layout.layout_hombre);
//Colacamos el IMC en el textView
TextView textViewH2 = (TextView)findViewById(R.id.textViewH2);
textViewH2.setText(imc1);
}
protected void colocarIMCM(String imc1){
//Cargar layout que vamos a usar
setContentView(R.layout.layout_mujer);
//Colacamos el IMC en el textView
TextView textViewM2 = (TextView)findViewById(R.id.textViewM2);
textViewM2.setText(imc1);
}
protected int getRandomNumber(int max){
int number = (new Random().nextInt(max));
return number;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public boolean onOptionsItemSelected(MenuItem item){
View include = findViewById(R.id.includeinch);
switch (item.getItemId()){
case R.id.kgcm:
if (item.isChecked());
else{
item.setChecked(true);
settingSet = "kgcm";
if(include != null){
findViewById(R.id.includeinch).setVisibility(View.INVISIBLE);
findViewById(R.id.includekg).setVisibility(View.VISIBLE);
}
}
return true;
case R.id.inch:
if (item.isChecked());
else{
item.setChecked(true);
settingSet = "inch";
if(include != null){
findViewById(R.id.includekg).setVisibility(View.INVISIBLE);
findViewById(R.id.includeinch).setVisibility(View.VISIBLE);
}
}
return true;
case R.id.salir:
salir();
return true;
case R.id.inicio:
inici();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
protected void salir() {
finish();
}
private void inici() {
setContentView(R.layout.layout_main);
if(settingSet.equals("inch")){
findViewById(R.id.includekg).setVisibility(View.INVISIBLE);
findViewById(R.id.includeinch).setVisibility(View.VISIBLE);
}
else{
findViewById(R.id.includekg).setVisibility(View.VISIBLE);
findViewById(R.id.includeinch).setVisibility(View.INVISIBLE);
}
}
} }
I know that I can't do that: 我知道我做不到：
MenuItem menu = (MenuItem)findViewById(R.id.inch); MenuItem menu2 = (MenuItem)findViewById(R.id.kgcm);
when I change something with the menu options and I back to main with inici() I hope, know witch option is selected in the menu to call the correct layout. 当我使用菜单选项更改某些内容并使用inici()返回main时，我希望知道菜单中已选择巫婆选项以调用正确的布局。
How can I check witch option it's selected in menu? 如何检查菜单中已选择的女巫选项？ I'm so sorry by my English. 我的英语对不起。
1 个解决方案
解决方案1
0 已采纳 2013-07-27 16:26:42
I can't understand this: 我不明白这一点：
When I back to main, if I change the case R.id.inch, this option not change to default, but my include back to default and then it's not working fine.
But I noticed the use of return true at the end of each case , replace that for break 但是我注意到在每种case使用return true ，将其替换为break
and try it again. 然后再试一次。
The problem is that you are accessing views that do not exist because they are changed with setContentView 问题是您正在访问不存在的视图，因为它们已被setContentView更改
A example that works: 一个有效的示例：
public class MainActivity extends Activity {
private String SettingSet;//Save what choice is set. Will be used in inici()
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu, menu);
return true;
}
public void onClickHombre(View v){
setContentView(R.layout.hombre_layout);
}
public void onClickMujer(View v){
setContentView(R.layout.mujer_layout);
}
public boolean onOptionsItemSelected(MenuItem item){
View include = findViewById(R.id.includeinch);
switch (item.getItemId()){
case R.id.kgcm:
if (item.isChecked());
else{
item.setChecked(true);
SettingSet = "kgcm";
if(include != null){//Do that only if in Main
findViewById(R.id.includeinch).setVisibility(View.INVISIBLE);
findViewById(R.id.includekg).setVisibility(View.VISIBLE);
}
}
return true;
case R.id.inch:
if (item.isChecked());
else{
item.setChecked(true);
SettingSet = "inch";
if(include != null){//Do that only if in Main
findViewById(R.id.includekg).setVisibility(View.INVISIBLE);
findViewById(R.id.includeinch).setVisibility(View.VISIBLE);
}
}
return true;
case R.id.salir:
salir();
return true;
case R.id.inicio:
//this function back on to main layout
inici();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private void inici() {
setContentView(R.layout.activity_main);
if(SettingSet == "inch"){
findViewById(R.id.includekg).setVisibility(View.INVISIBLE);
findViewById(R.id.includeinch).setVisibility(View.VISIBLE);
}
else{
findViewById(R.id.includekg).setVisibility(View.VISIBLE);
findViewById(R.id.includeinch).setVisibility(View.INVISIBLE);
}
}
private void salir() {
// TODO Auto-generated method stub
}
}
Anyway it is better to use an activity for Hombre and another for Mujer 无论如何，最好将一个活动用于Hombre，将另一个用于Mujer
There is a way around this but, i say again, it is not a good practice. 有一种解决方法，但我再说一遍，这不是一个好习惯。
1 - Move all code from onCreate to inici() . 1-将所有代码从onCreate移到inici() 。 Call inici() at onCreate . 在onCreate调用inici() 。
2 - In inici() implement OnItemSelectedListener for each Spinner and save the selected item to a field. 2-在inici()为每个Spinner实现OnItemSelectedListener并将所选项目保存到字段中。
3 - In inici() restore the item selected from that field. 3-在inici()还原从该字段中选择的项目。
4 - Before call findViewById with any view in Hombre or Mujer call setContentView with the corresponding layout (Hombre or Mujer). 4-使用Hombre或Mujer中的任何视图调用findViewById之前，请调用具有相应布局（Hombre或Mujer）的setContentView 。 After all the work done with Hombre or Mujer call inici() (the screen may blink). 用Hombre或Mujer完成所有工作后，请调用inici() （屏幕可能会闪烁）。
This can solve, but I am sure that other problems will come. 这可以解决，但我相信还会有其他问题。
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