根据选中的复选框，使按钮执行某些操作

Question

我已经写了这段代码，请告诉我，根据选中的复选框，我应该做什么来让按钮做一些事情。

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_costi_di_impianto);
}
public void CalcolaC(View view) {
double Onorario1,SpeseD1,CostI1,Iva1,Deb1,Rit1,ccp1,Netto1;
//
Onorario1 = 0;
SpeseD1 = 0;
ccp1 = 0;
//
EditText Onorario = (EditText) findViewById(R.id.Onorario);
EditText SpeseD = (EditText) findViewById(R.id.SpeseD);
TextView CostI = (TextView) findViewById(R.id.CostI);
TextView Iva = (TextView) findViewById(R.id.Iva);
TextView Deb = (TextView) findViewById(R.id.Deb);
TextView Rit = (TextView) findViewById(R.id.Rit);
TextView ccp = (TextView) findViewById(R.id.ccp);
TextView Netto = (TextView) findViewById(R.id.Netto);
final CheckBox checkBox1=(CheckBox)findViewById(R.id.checkBox1);
final CheckBox checkBox2=(CheckBox)findViewById(R.id.checkBox2);
//
try{
Onorario1 = Math.round(Double.parseDouble(Onorario.getText().toString())*100.0)/100.0;
SpeseD1 = Math.round(Double.parseDouble(SpeseD.getText().toString())*100.0)/100.0;
} catch (NumberFormatException e){
ErrorMsg();
Pulisci(view);
return;
}
if(checkBox1.isChecked())
ccp1 = Onorario1 * 2 / 100;
Iva1 = (Onorario1 + ccp1)*22/100;
Rit1 = (Onorario1+ccp1+Iva1+SpeseD1)*20/100;
CostI1 = (Onorario1+ccp1+SpeseD1);
Deb1 = (Onorario1+ccp1+Iva1+SpeseD1);
Netto1 = (Onorario1+ccp1+Iva1+SpeseD1) - Rit1;
//
ccp.setText(Double.toString(round(ccp1,2)));
Iva.setText(Double.toString(round(Iva1,2)));
Rit.setText(Double.toString(round(Rit1,2)));
CostI.setText(Double.toString(round(CostI1,2)));
Deb.setText(Double.toString(round(Deb1,2)));
Netto.setText(Double.toString(round(Netto1,2)));
if(checkBox2.isChecked())
ccp1 = Onorario1 * 4 / 100;
Iva1 = (Onorario1 + ccp1)*22/100;
Rit1 = (Onorario1+ccp1+Iva1+SpeseD1)*20/100;
CostI1 = (Onorario1+ccp1+SpeseD1);
Deb1 = (Onorario1+ccp1+Iva1+SpeseD1);
Netto1 = (Onorario1+ccp1+Iva1+SpeseD1) - Rit1;
//
ccp.setText(Double.toString(round(ccp1,2)));
Iva.setText(Double.toString(round(Iva1,2)));
Rit.setText(Double.toString(round(Rit1,2)));
CostI.setText(Double.toString(round(CostI1,2)));
Deb.setText(Double.toString(round(Deb1,2)));
Netto.setText(Double.toString(round(Netto1,2)));
}
private void Pulisci(View view) {
EditText Onorario = (EditText) findViewById(R.id.Onorario);
EditText SpeseD = (EditText) findViewById(R.id.SpeseD);
TextView CostI = (TextView) findViewById(R.id.CostI);
TextView Iva = (TextView) findViewById(R.id.Iva);
TextView Deb = (TextView) findViewById(R.id.Deb);
TextView Rit = (TextView) findViewById(R.id.Rit);
TextView ccp = (TextView) findViewById(R.id.ccp);
TextView Netto = (TextView) findViewById(R.id.Netto);
Onorario.setText("");
SpeseD.setText("");
CostI.setText("");
Iva.setText("");
Deb.setText("");
Rit.setText("");
ccp.setText("");
Netto.setText("");
}
private void ErrorMsg() {
AlertDialog Msg = new AlertDialog.Builder(this).create();
Msg.setTitle("Errore");
Msg.setMessage("Hai inserito dei dati non validi!");
Msg.setButton(DialogInterface.BUTTON_POSITIVE, "OK",  new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
}});
Msg.show();
}
public static double round(double value, int places) {
if (places < 0) throw new IllegalArgumentException();
long factor = (long) Math.pow(10, places);
value = value * factor;
long tmp = Math.round(value);
return (double) tmp / factor;
}
}

这是logCat

02-11 13:20:11.880: E/AndroidRuntime(549): java.lang.IllegalStateException: Could not find a method onCheckboxClicked(View) in the activity class com.ITE.economiaaziendale.CostiDiImpianto for onClick handler on view class android.widget.CheckBox with id 'checkBox2'

Answer 1

您可以使用监听器，如下所示：

checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked){
} else {
}
}
});

Answer 2

将setOnClickListener()设置为复选框。

checkBox1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {             
if (((CheckBox) v).isChecked()) {
ccp1 = Onorario1 * 2 / 100;
Iva1 = (Onorario1 + ccp1)*22/100;
Rit1 = (Onorario1+ccp1+Iva1+SpeseD1)*20/100;
CostI1 = (Onorario1+ccp1+SpeseD1);
Deb1 = (Onorario1+ccp1+Iva1+SpeseD1);
Netto1 = (Onorario1+ccp1+Iva1+SpeseD1) - Rit1;
//
ccp.setText(Double.toString(round(ccp1,2)));
Iva.setText(Double.toString(round(Iva1,2)));
Rit.setText(Double.toString(round(Rit1,2)));
CostI.setText(Double.toString(round(CostI1,2)));
Deb.setText(Double.toString(round(Deb1,2)));
Netto.setText(Double.toString(round(Netto1,2)));       
}
}
});
checkBox2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {             
if (((CheckBox) v).isChecked()) {           
ccp1 = Onorario1 * 4 / 100;
Iva1 = (Onorario1 + ccp1)*22/100;
Rit1 = (Onorario1+ccp1+Iva1+SpeseD1)*20/100;
CostI1 = (Onorario1+ccp1+SpeseD1);
Deb1 = (Onorario1+ccp1+Iva1+SpeseD1);
Netto1 = (Onorario1+ccp1+Iva1+SpeseD1) - Rit1;
//
ccp.setText(Double.toString(round(ccp1,2)));
Iva.setText(Double.toString(round(Iva1,2)));
Rit.setText(Double.toString(round(Rit1,2)));
CostI.setText(Double.toString(round(CostI1,2)));
Deb.setText(Double.toString(round(Deb1,2)));
Netto.setText(Double.toString(round(Netto1,2)));
}
}
});

或setOnCheckedChangeListener()。

checkBox1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked){
ccp1 = Onorario1 * 2 / 100;
Iva1 = (Onorario1 + ccp1)*22/100;
Rit1 = (Onorario1+ccp1+Iva1+SpeseD1)*20/100;
CostI1 = (Onorario1+ccp1+SpeseD1);
Deb1 = (Onorario1+ccp1+Iva1+SpeseD1);
Netto1 = (Onorario1+ccp1+Iva1+SpeseD1) - Rit1;
//
ccp.setText(Double.toString(round(ccp1,2)));
Iva.setText(Double.toString(round(Iva1,2)));
Rit.setText(Double.toString(round(Rit1,2)));
CostI.setText(Double.toString(round(CostI1,2)));
Deb.setText(Double.toString(round(Deb1,2)));
Netto.setText(Double.toString(round(Netto1,2)));       
}
});
checkBox2.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked){
ccp1 = Onorario1 * 4 / 100;
Iva1 = (Onorario1 + ccp1)*22/100;
Rit1 = (Onorario1+ccp1+Iva1+SpeseD1)*20/100;
CostI1 = (Onorario1+ccp1+SpeseD1);
Deb1 = (Onorario1+ccp1+Iva1+SpeseD1);
Netto1 = (Onorario1+ccp1+Iva1+SpeseD1) - Rit1;
//
ccp.setText(Double.toString(round(ccp1,2)));
Iva.setText(Double.toString(round(Iva1,2)));
Rit.setText(Double.toString(round(Rit1,2)));
CostI.setText(Double.toString(round(CostI1,2)));
Deb.setText(Double.toString(round(Deb1,2)));
Netto.setText(Double.toString(round(Netto1,2)));
}
});

Answer 3

首先全局定义所有视图，并在活动类中实现onCheckedChangedListener，即：

Edittext Onorario, SpeseD;
TextView CostI, Iva, Deb, Rit, ccp, Netto; 
CheckBox checkBox1, checkBox2;   
public class YourActivity extends Activity implements onCheckedChangedListener {

然后在onCreate方法中进行初始化过程，即：

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_costi_di_impianto);
Onorario = (EditText) findViewById(R.id.Onorario);
SpeseD = (EditText) findViewById(R.id.SpeseD);
CostI = (TextView) findViewById(R.id.CostI);
Iva = (TextView) findViewById(R.id.Iva);
Deb = (TextView) findViewById(R.id.Deb);
Rit = (TextView) findViewById(R.id.Rit);
ccp = (TextView) findViewById(R.id.ccp);
Netto = (TextView) findViewById(R.id.Netto);
checkBox1=(CheckBox)findViewById(R.id.checkBox1);
checkBox2=(CheckBox)findViewById(R.id.checkBox2);
//Here add your onCheckedChangedListener to each checkbox
checkBox1.setOnCheckedChangeListener(this);
checkBox2.setOnCheckedChangeListener(this);   
}

现在在你的setOnCheckedChangeListener上做你喜欢的事情，即

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
switch (buttonView.getId()){
case R.id.checkBox1:
if(isChecked){
//Do here all your button click stuff or set text to any edittext or textview if the first ckeckbox is checked..
}else{
//do something if the checkbox1 is not checked
}
break;
case R.id.checkBox2:
if(isChecked){
//do here what you want to do when checkbox2 is checked 
}else{
//and here when the checkbox2 is not checked
}
break;
}

这里所有的答案都是正确的，但你的问题在于写作水平。正如我在您的代码中看到的，onCreate方法了解所有内容。因此，以良好的方式执行所有进程，这将帮助您发现编译和运行时错误。