Why it is not possible to put the two TextWatcher in One activity for two different edittext that change the value with respect of each other?
https://stackoverflow.com/questions/7721327
-
08-02-2021 - |
italiano
english
français
española
中国
日本の
العربية
Deutsch
한국어
Português
RussianDomanda
In My Application there is two EditText and one TextView. I have set the Two Textwatcher on that both EditText. Based on the Value in that EditText, The Value of another EditText is changed and it also apply to textView. All Goes Nice. But if i put the that Another Edittext as like the value of it to be change based on the Another EditText then it gives me stackOverflow Error. I dont know Where i am wrong. And I am not able to Put the TextWatcher for both the EditText to change the value with respect to each other.
Please Help me for it. Thanks. Code :
amountText.setText(""); // TextView
excludedText.setText(""); // EditText
includedText.setText(""); // EditText
includedText.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if(!(includedText.getText().toString().equals("")))
{
double included = Double.parseDouble(includedText.getText().toString());
included = roundTwoDecimals(included);
// double amountValue = (excluded*15/100);
String amt = String.valueOf(roundTwoDecimals(included-(included/1.15)));
String excluded = String.valueOf(included/1.15);
System.out.println("The Amount is: "+amt);
amountText.setText(amt);
try{
excludedText.setText("");
excludedText.setText(excluded); //////// Error Line
}
catch(Exception e)
{
e.printStackTrace();
}
}
else
{
amountText.setText("");
excludedText.setText(""); // Error line
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
excludedText.addTextChangedListener(new TextWatcher()
{
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if(!(excludedText.getText().toString().equals("")))
{
double excluded = Double.parseDouble(excludedText.getText().toString());
excluded = roundTwoDecimals(excluded);
String amt = String.valueOf(roundTwoDecimals(excluded*0.15));
String included = String.valueOf(roundTwoDecimals(excluded+(excluded*0.15)));
System.out.println("The Amount is: "+amt);
amountText.setText(amt);
includedText.setText(included);
}
else
{
amountText.setText("");
includedText.setText("");
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
Here my Logcat is:
10-11 09:47:28.288: ERROR/AndroidRuntime(363): FATAL EXCEPTION: main
10-11 09:47:28.288: ERROR/AndroidRuntime(363): java.lang.StackOverflowError
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.text.DynamicLayout.reflow(DynamicLayout.java:261)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.text.DynamicLayout.<init>(DynamicLayout.java:150)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.makeNewLayout(TextView.java:4851)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.checkForRelayout(TextView.java:5348)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2688)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2556)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.EditText.setText(EditText.java:75)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2531)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at com.project.TaxCalculator.GSTActivity$1.onTextChanged(GSTActivity.java:73)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2691)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2556)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.EditText.setText(EditText.java:75)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2531)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at com.project.TaxCalculator.GSTActivity$2.onTextChanged(GSTActivity.java:111)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2691)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2556)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.EditText.setText(EditText.java:75)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2531)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at com.project.TaxCalculator.GSTActivity$1.onTextChanged(GSTActivity.java:73)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2691)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2556)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.EditText.setText(EditText.java:75)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2531)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at com.project.TaxCalculator.GSTActivity$2.onTextChanged(GSTActivity.java:111)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2691)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2556)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.EditText.setText(EditText.java:75)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2531)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at com.project.TaxCalculator.GSTActivity$1.onTextChanged(GSTActivity.java:73)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2691)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2556)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.EditText.setText(EditText.java:75)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2531)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at com.project.TaxCalculator.GSTActivity$2.onTextChanged(GSTActivity.java:111)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2691)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2556)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.EditText.setText(EditText.java:75)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2531)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at com.project.TaxCalculator.GSTActivity$1.onTextChanged(GSTActivity.java:73)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2691)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2556)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.EditText.setText(EditText.java:75)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2531)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at com.project.TaxCalculator.GSTActivity$2.onTextChanged(GSTActivity.java:111)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2691)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2556)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.EditText.setText(EditText.java:75)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2531)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at com.project.TaxCalculator.GSTActivity$1.onTextChanged(GSTActivity.java:73)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2691)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2556)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.EditText.setText(EditText.java:75)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2531)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at com.project.TaxCalculator.GSTActivity$2.onTextChanged(GSTActivity.java:111)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextView.setText(TextView.java:2691)
10-11 09:47:28.288: ERROR/AndroidRuntime(363): at android.widget.TextVie
Please refer this logcat and help me to solve it. Thanks.
Soluzione
This is a problem of stackoverflow you are going to infinite loop.
You are updating value of one edittext from second one and vice-verse .
For example ::
When you enter character in first edit text it will set text of second edit text and at that time in second edit text you have write a code to set text of first edit text so that you are going to infinite loop.
EDIT
et1 = (EditText)findViewById(R.id.et1);
et2 = (EditText)findViewById(R.id.et2);
OnKeyListener onKeyListener = new OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
String str = ((EditText)v).getText().toString();
if(v == et1) {
et2.setText(str);
}else {
et1.setText(str);
}
return false;
}
};
et1.setOnKeyListener(onKeyListener);
et2.setOnKeyListener(onKeyListener);
Altri suggerimenti
You could try to put the code into "afterTextChanged", but I think it will result in the same infinite loop. That's why I don't understand how both inputs can depend on each other, meaning, if EditText-A changes the text of ET-B, then how can ET-B change the text in ET-A again, that doesn't make any sense.
Everytime a text is changed in an EditText the TextWatcher is invoked (if it is defined and depending on which overridden methods you implemented). So based on what you want to accomplish, if EditText A's text is edited then the TextWatcher is invoked and edits EditText B's text which then invokes its corresponding TextWatcher which edits EditText A's text which invokes... in short it is a bad practice.
Autorizzato sotto: CC-BY-SA insieme a attribuzione
Non affiliato a StackOverflow
