我有一個編輯文本,用戶可以用釐米和英尺+英寸輸入他的高度,例如。 5'11「。我有一個目標單位的切換按鈕,所以我希望當用戶選擇釐米時,它應該將輸入的文本從英尺+英寸轉換成釐米,反之亦然。 現在,當我將高度以釐米爲單位,最後加上「\」「。我認爲這是因爲文本守望者我已經把它在結尾時計數達到3。高度轉換 - 釐米到英尺和英寸(反之亦然)
public void onClick(View view) {
switch (view.getId())
{
case R.id.btnCm:
toggleHeightButton(R.id.btnCm,R.id.btnFeet,false);
convertToCentimeter(enter_height);
break;
case R.id.btnFeet:
toggleHeightButton(R.id.btnFeet,R.id.btnCm,true);
enter_height.addTextChangedListener(new CustomTextWatcher(enter_height));
break;
case R.id.btnKg:
toggleweightButton(R.id.btnKg,R.id.btnpound,false);
break;
case R.id.btnpound:
toggleweightButton(R.id.btnpound,R.id.btnKg,true);
break;
}
}
public class CustomTextWatcher implements TextWatcher {
private EditText mEditText;
public CustomTextWatcher(EditText enter_height) {
mEditText = enter_height;
}
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
public void afterTextChanged(Editable s) {
int count = s.length();
String str = s.toString();
if (count == 1) {
str = str + "'";
} else if (count == 2) {
return;
} else if (count == 3) {
str = str + "\"";
} else if ((count > 4) && (str.charAt(str.length() - 1) != '\"')){
str = str.substring(0, str.length() - 2) + str.charAt(str.length() - 1) + "\"";
} else {
return;
}
mEditText.setText(str);
mEditText.setSelection(mEditText.getText().length());
}
}
如果'dCentimeter' = 91.44,182.88等'centimeterToFeet'不工作。 –