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POonTextChanged when I delete the value totaly
 

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  1. POonTextChanged when I delete the value totaly
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    <p>I'm trying to build a tip calc. This is part of my code:</p> <pre><code>public void onTextChanged(CharSequence s, int start, int before, int count) { double billAmount = Double.parseDouble(s.toString()); tip10EditText.setText("" + billAmount * .1); tip15EditText.setText("" + billAmount * .15); tip20EditText.setText("" + billAmount * .2); total10EditText.setText("" + (billAmount + billAmount * 0.1)); total15EditText.setText("" + (billAmount + billAmount * 0.15)); total20EditText.setText("" + (billAmount + billAmount * 0.2)); } </code></pre> <p>The problem is, when I delete everything from the bill edit text, the app crashes.. My friend found some way to deal with it. Here is he's code:</p> <pre><code>public void onTextChanged(CharSequence s, int start, int before, int count) { if (!s.toString().equals("")) { bill = Double.parseDouble(s.toString()); tip10EditText.setText((bill / 10) + ""); total10EditText.setText((bill + (bill / 10)) + ""); // the String.format("%.2f", is to SHORTEN the tail of the double to 2 digits tip15EditText.setText(String.format("%.2f", (bill / 6.6666) )); total15EditText.setText(String.format("%.2f",(bill + (bill / 6.6666)) )); tip20EditText.setText(String.format("%.2f", (bill / 5) )); total20EditText.setText(String.format("%.2f",(bill + (bill / 5)) )); // to handle the seekBar changing according to the bill double billCu = Double.parseDouble(billEditText.getText().toString()); // total20EditText.setText(String.format("%.2f",(tipOf )); double progressPer=Double.parseDouble(customTipTextView.getText().toString()); double tipOf = (billCu/100)*progressPer; tipCustomEditText.setText(String.format("%.2f",(tipOf ))); totalCustomEditText.setText(String.format("%.2f",((billCu+tipOf) ))); } else { tip10EditText.setText( ""); total10EditText.setText( ""); tip15EditText.setText( ""); total15EditText.setText( ""); tip20EditText.setText( ""); total20EditText.setText( ""); tipCustomEditText.setText(""); totalCustomEditText.setText(""); } } </code></pre> <p>Is there a better way to deal with this problem?</p>
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    1. UShelb
    1. USEvgeny Goldin
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    2. PO
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    3. PO
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      1. POonTextChanged when I delete the value totaly
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    1. COwhat will u do if a text char is entered?
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      1. POonTextChanged when I delete the value totaly
      1. USTamilselvan Kalimuthu
    2. COAside from checking whether it is empty or not (either using `s.length>0` or `TextUtils.isEmpty(s)`), you may find `TextUtils.isDigitsOnly(s)` useful, or use `try-catch` block to handle invalid input.
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      1. POonTextChanged when I delete the value totaly
      1. USAndrew T.
    3. CO@Evgency Golding if u find a useful answer upvote or accept the ans it will be good for the viewers to understand the solution.
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      1. POonTextChanged when I delete the value totaly
      1. USTamilselvan Kalimuthu
 

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