在我的应用程序中,我有许多编辑文本,我为它们实现了文本观看者,我希望它们增加并减少文本视图号码,但我只能增加它
我试图检查旧文本是否更大,并降低文本视图号码,但每次都会返回false
我的代码:
editText.addTextChangedListener(new TextWatcher() {
String oldText = "";
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
this.oldText = s.toString();
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
if (!editText.getText().toString().equals("")) {
int price = Integer.parseInt(editText.getText().toString()) * price_db;
productPrice.setText(price + "");
int totalPrice_n = Integer.parseInt(totalPrice.getText().toString());
int min = Integer.parseInt(editText.getText().toString()) - Integer.parseInt(oldText);
if(Integer.parseInt(editText.getText().toString()) > Integer.parseInt(oldText)){
totalPrice.setText((totalPrice_n + min * price_db) + "");
}else{
totalPrice.setText((totalPrice_n - min * price_db) + "");
}
}
}
});
我的问题是,如果条件仅返回false并转到其他一部分,我的deDittext默认文本将设置为0,所以我认为BeforeTextChanged仅在0上占0,并检查新文本是否大于0
我更改使用2按钮( , - (的EditText文本,当我单击 按钮以增加文本视图号码以及我单击 - 按钮以减少文本视图号码时,我想要
用您的代码替换我的代码,然后检查花花公子!!!:(
editText.addTextChangedListener(new TextWatcher() {
String oldText = "";
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
this.oldText = s.toString();
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
if (!editText.getText().toString().equalsIgnoreCase(""))
{
int amount=Integer.parseI`enter code here`nt(editText.getText().toString());
int price = Integer.parseInt(editText.getText().toString()) * price_db;
int totalPrice_n = Integer.parseInt(totalPrice.getText().toString());
productPrice.setText(price);
int min = amount - Integer.parseInt(oldText);
if(Integer.parseInt(oldText) > 0)
{
if(amount > Integer.parseInt(oldText)){
totalPrice.setText((totalPrice_n + min * price_db));
}else{
totalPrice.setText((totalPrice_n - min * price_db));
}
}
else
Toast.makeText(context,"old text is 0",Toast.LENGTH_LONG).show();
}
}
});