Android Edittext导致堆栈溢出

下面是我的textwatcher类，我正在尝试根据列表的edittext的更改来更改列表的textview内容

   public class MtQtyWatcher implements TextWatcher {
            View v;
            public MtQtyWatcher(View v){
                this.v = v;         
            }

            public void afterTextChanged(Editable s) {
                String qty = s.toString().trim();
                int quantity = qty.equals("")?0:Integer.parseInt(qty);
                EditText edtQty = (EditText)v.findViewById(R.id.qty);
                Item item = (Item)edtQty.getTag();

                if(item.getQty()!=quantity){
                    edtQty.setText(qty);
                    item.setQty(quantity);
                    float newRate = quantity * (item.getRate());
                    item.setAmt(newRate);
                    TextView txtAmt = (TextView) v.findViewById(R.id.amt);  
                    txtAmt.setText(""+item.getAmt());
                }
            }

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

            public void onTextChanged(CharSequence s, int start, int before,int count) {}

        }

这是下面的stacktrace

04-10 15:00:13.179: E/AndroidRuntime(24454): FATAL EXCEPTION: main 
04-10 15:00:13.179: E/AndroidRuntime(24454): java.lang.StackOverflowError 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.text.SpannableStringBuilder.getSpans(SpannableStringBuilder.java:783) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.text.method.ReplacementTransformationMethod$SpannedReplacementCharSequence.getSpans(ReplacementTransformationMethod.java:184) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.text.Styled.drawUniformRun(Styled.java:67) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.text.Styled.drawDirectionalRun(Styled.java:322) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.text.Styled.measureText(Styled.java:454) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.text.Layout.measureText(Layout.java:1971) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.text.Layout.getLineMax(Layout.java:912) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.text.Layout.getLineMax(Layout.java:886) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.text.Layout.getHorizontal(Layout.java:742) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.text.Layout.getHorizontal(Layout.java:703) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.text.Layout.getPrimaryHorizontal(Layout.java:688) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.getFocusedRect(TextView.java:4522) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.view.FocusFinder.findNextFocus(FocusFinder.java:72)
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.view.ViewGroup.focusSearch(ViewGroup.java:476) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.view.ViewGroup.focusSearch(ViewGroup.java:478) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.view.ViewGroup.focusSearch(ViewGroup.java:478) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.view.ViewGroup.focusSearch(ViewGroup.java:478) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.view.ViewGroup.focusSearch(ViewGroup.java:478) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.view.ViewGroup.focusSearch(ViewGroup.java:478) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.view.ViewGroup.focusSearch(ViewGroup.java:478) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.view.View.focusSearch(View.java:3494) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.onCreateInputConnection(TextView.java:4922) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.view.inputmethod.InputMethodManager.startInputInner(InputMethodManager.java:945) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.view.inputmethod.InputMethodManager.restartInput(InputMethodManager.java:900) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2734) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2676) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.EditText.setText(EditText.java:178) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2651) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at com.eshopping.u.ItemList$MtQtyWatcher.afterTextChanged(ItemList.java:144) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.sendAfterTextChanged(TextView.java:6724) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2822) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2676) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.EditText.setText(EditText.java:178) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2651) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at com.eshopping.u.ItemList$MtQtyWatcher.afterTextChanged(ItemList.java:144) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.sendAfterTextChanged(TextView.java:6724) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2822) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2676) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.EditText.setText(EditText.java:178) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2651) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at com.eshopping.u.ItemList$MtQtyWatcher.afterTextChanged(ItemList.java:144) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.sendAfterTextChanged(TextView.java:6724) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2822) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2676) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.EditText.setText(EditText.java:178) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2651) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at com.eshopping.u.ItemList$MtQtyWatcher.afterTextChanged(ItemList.java:144) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.sendAfterTextChanged(TextView.java:6724) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2822) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2676) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.EditText.setText(EditText.java:178) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2651) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at com.eshopping.u.ItemList$MtQtyWatcher.afterTextChanged(ItemList.java:144) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.sendAfterTextChanged(TextView.java:6724) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2822) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2676) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.EditText.setText(EditText.java:178) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2651) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at com.eshopping.u.ItemList$MtQtyWatcher.afterTextChanged(ItemList.java:144) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.sendAfterTextChanged(TextView.java:6724) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2822) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2676) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.EditText.setText(EditText.java:178) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    at android.widget.TextView.setText(TextView.java:2651) 
04-10 15:00:13.179: E/AndroidRuntime(24454):    a

---

您的TextWatcher是否已连接到EditText？如果是这样，您将得到无限递归，因为您正在修改EditText中的文本，这将再次调用afterTextChanged。

您的TextWatcher是否已连接到EditText？如果是这样，您将得到无限递归，因为您正在修改EditText中的文本，这将再次调用afterTextChanged。

在我看来，观察者似乎正在被其中一个SetText递归调用

解决这个问题的一种方法是添加一个布尔值来停止再入

public class MtQtyWatcher implements TextWatcher {

    boolean running = false;
    View v;

    public MtQtyWatcher(View v){
        this.v = v;         
    }

    public void afterTextChanged(Editable s) {
        if(!running){
            running = true;
            // add your stuff here
            running = false;
        }
    }
}

---

在我看来，观察者似乎被其中一个settext递归调用

解决这个问题的一种方法是添加一个布尔值来停止再入

public class MtQtyWatcher implements TextWatcher {

    boolean running = false;
    View v;

    public MtQtyWatcher(View v){
        this.v = v;         
    }

    public void afterTextChanged(Editable s) {
        if(!running){
            running = true;
            // add your stuff here
            running = false;
        }
    }
}

---

TextWatcher中的setText导致无限堆栈循环

---

我建议改用InputFilter。

TextWatcher中的setText会导致无限堆栈循环

我建议改为使用InputFilter。

我找到了一个解决方案，从PostTextChanged中删除代码并将其添加到ContextChanged中 我找到了一个解决方案，从PostTextChanged中删除代码并将其添加到ContextChanged中

---

也可以在调用setText方法之前从edittext中删除textwatcher；

---

在settext之后，您需要再次添加textwatcher。

您还可以在调用settext方法之前从edittext中删除textwatcher；

---

settext之后，您需要再次添加textwatcher。

非常确定这是因为您正在设置触发textwatcher的文本，这将导致无限循环非常确定这是因为您正在设置触发textwatcher的文本，这会导致无限循环谢谢alex让我试试。嗨alex我通过在onTextChange方法中添加代码来修复它。谢谢alex让我试试。嗨alex我通过在onTextChange方法中添加代码来修复它。这不仅仅是将代码移动到另一个代码，下面有一个更好的答案，当您尝试更改文本时，它将被递归调用。这不仅仅是将代码移动到另一个代码，下面有一个更好的答案，当您尝试更改文本时，它将被递归调用