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Android: why i am not able to change the value of EditText with respect to another EditText?

Tags:

android

android-layout

android-edittext

textchanged

I am going to change the text of the edittext based on the value enter on the another edittext. and also like same thig with visa-versa.

For that i have use the TextChanged Listener and implemented as like below:

 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);

                    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);
                    excludedText.setText(excluded); //////// Error Line
                }
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
        }

        @Override
        public void afterTextChanged(Editable s) {
        }
    });


    // worked
    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);
            }
        }
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
        }

        @Override
        public void afterTextChanged(Editable s) {
        }
    });
}

But after doing this i am not able to get the text change. for Secod EditText its worked nice but while i use the First EditText then it gives me error at the commented line.

Error Log:

12-22 13:08:17.640: ERROR/AndroidRuntime(1077): FATAL EXCEPTION: main
12-22 13:08:17.640: ERROR/AndroidRuntime(1077): java.lang.StackOverflowError
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.text.TextUtils.getChars(TextUtils.java:69)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.text.TextUtils.indexOf(TextUtils.java:102)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.text.StaticLayout.generate(StaticLayout.java:131)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.text.DynamicLayout.reflow(DynamicLayout.java:261)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.text.DynamicLayout.<init>(DynamicLayout.java:150)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.makeNewLayout(TextView.java:4851)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.checkForRelayout(TextView.java:5348)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2688)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2556)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.EditText.setText(EditText.java:75)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2531)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at com.project.TaxCalculator.GSTActivity$2.onTextChanged(GSTActivity.java:93)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2691)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2556)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.EditText.setText(EditText.java:75)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2531)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at com.project.TaxCalculator.GSTActivity$1.afterTextChanged(GSTActivity.java:74)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.sendAfterTextChanged(TextView.java:6145)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2695)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2556)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.EditText.setText(EditText.java:75)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2531)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at com.project.TaxCalculator.GSTActivity$2.onTextChanged(GSTActivity.java:93)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2691)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2556)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.EditText.setText(EditText.java:75)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2531)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at com.project.TaxCalculator.GSTActivity$1.afterTextChanged(GSTActivity.java:74)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.sendAfterTextChanged(TextView.java:6145)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2695)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2556)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.EditText.setText(EditText.java:75)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2531)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at com.project.TaxCalculator.GSTActivity$2.onTextChanged(GSTActivity.java:93)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2691)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2556)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.EditText.setText(EditText.java:75)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2531)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at com.project.TaxCalculator.GSTActivity$1.afterTextChanged(GSTActivity.java:74)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.sendAfterTextChanged(TextView.java:6145)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2695)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2556)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.EditText.setText(EditText.java:75)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2531)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at com.project.TaxCalculator.GSTActivity$2.onTextChanged(GSTActivity.java:93)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2691)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2556)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.EditText.setText(EditText.java:75)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2531)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at com.project.TaxCalculator.GSTActivity$1.afterTextChanged(GSTActivity.java:74)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.sendAfterTextChanged(TextView.java:6145)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2695)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2556)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.EditText.setText(EditText.java:75)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2531)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at com.project.TaxCalculator.GSTActivity$2.onTextChanged(GSTActivity.java:93)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.sendOnTextChanged(TextView.java:6131)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2691)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2556)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.EditText.setText(EditText.java:75)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at android.widget.TextView.setText(TextView.java:2531)
12-22 13:08:17.640: ERROR/AndroidRuntime(1077):     at com.project.TaxCalculator.GSTAct

So whats the wrong with this ? Why i am not able to get effect for both the EditText ? Thanks.

like image 364
Shreyash Mahajan Avatar asked Dec 06 '22 17:12

Shreyash Mahajan

2 Answers

this is because you are doing setText() inside onTextChanged . So when you change the text onTextChanged will be called and again inside onTextChanged you are calling setText(). So thr text changed again and onTextChanged() will be called again and this process will continue till stack overflow and result to stackOverFlow error. Hope you can understand...

user removeTextChangedListener() before setText().

Edit:

Define
TextWatcher excludeTW,includeTW; //globaly.

    includedText = (EditText)findViewById(R.id.include);
    excludedText = (EditText)findViewById(R.id.exclude);

    includeTW = new TextWatcher(){

        @Override
        public void afterTextChanged(Editable s) {
            // TODO Auto-generated method stub

        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before,
                int count) {
             if(!(includedText.getText().toString().equals("")))
                {
                    excludedText.removeTextChangedListener(excludeTW);
                    String included = includedText.getText().toString();
                    excludedText.setText(included); //////// Error Line
                }

        }



    };


    excludeTW = new TextWatcher(){

        @Override
        public void afterTextChanged(Editable s) {
            // TODO Auto-generated method stub

        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before,
                int count) {
        includedText.removeTextChangedListener(includeTW);
        String excluded = excludedText.getText().toString();
        includedText.setText(excluded);

        }



    };
    includedText.addTextChangedListener(includeTW) ;
    excludedText.addTextChangedListener(excludeTW);
like image 61
Sujit Avatar answered Jan 13 '23 03:01

Sujit

I think this is causing you problem because you are putting the whole code in recursion. i.e 1st editext changes the text of 2nd edittext which again changes the text of 1st edittext...this goes on forever..

Solution: apply some logic that adds the text change listener when the 1st edit text has lost its focus n vice versa.

Comment if u need help.

setOnTextChangeListener(true);

    excludedTextWatch = 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);
                includedText.setText("" + included);
            }
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
        }

        @Override
        public void afterTextChanged(Editable s) {
        }
    };

    includedTextWatch = 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);

                String amt = String.valueOf(roundTwoDecimals(included
                        - (included / 1.15)));
                String excluded = String.valueOf(included / 1.15);
                System.out.println("The Amount is: " + amt);
                excludedText.setText("" + excluded); // ////// Error
                                                        // Line
            }
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
        }

        @Override
        public void afterTextChanged(Editable s) {
        }
    };

    includedText.setOnFocusChangeListener(new OnFocusChangeListener() {

        @Override
        public void onFocusChange(View v, boolean hasFocus) {
            excludedText.removeTextChangedListener(excludedTextWatch);
            includedText.removeTextChangedListener(includedTextWatch);
            setOnTextChangeListener(hasFocus);
        }
    });
}

private void setOnTextChangeListener(boolean shouldSetTheListener) {
    if (shouldSetTheListener) {
        includedText.addTextChangedListener(includedTextWatch);
    } else {
        excludedText.addTextChangedListener(excludedTextWatch);
    }
}

This will definately work.

like image 40
Hardik4560 Avatar answered Jan 13 '23 02:01

Hardik4560
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