我可以使用数字(0,1,2,3,..,9)&清除,删除。但我不能使用小数。然后,当我删除时,我不想删除所有 .setText(""),我想在用户使用4个号码时逐个删除( 1234)。
edt_cargo_info_money_amount = (EditText) contentView.findViewById(R.id.edt_cargo_info_money_amount);
Button[] numbers = new Button[11];
numbers[0] = (Button) contentView.findViewById(R.id.one);
numbers[1] = (Button) contentView.findViewById(R.id.two);
numbers[2] = (Button) contentView.findViewById(R.id.three);
numbers[3] = (Button) contentView.findViewById(R.id.four);
numbers[4] = (Button) contentView.findViewById(R.id.five);
numbers[5] = (Button) contentView.findViewById(R.id.six);
numbers[6] = (Button) contentView.findViewById(R.id.seven);
numbers[7] = (Button) contentView.findViewById(R.id.eight);
numbers[8] = (Button) contentView.findViewById(R.id.nine);
numbers[9] = (Button) contentView.findViewById(R.id.zero);
numbers[10] = (Button) contentView.findViewById(R.id.decimal);
for (int i = 0; i < numbers.length; i++) {
numbers[i].setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
edt_cargo_info_money_amount.append(((Button) v).getText().toString());
}
});
}
del = (Button) contentView.findViewById(R.id.del);
del.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
edt_cargo_info_money_amount.setText(" ");
}
});
success = (Button) contentView.findViewById(R.id.ok);
cancel = (Button) contentView.findViewById(R.id.cancel);
success.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Amount = edt_cargo_info_money_amount.getText().length() > 0 ? edt_cargo_info_money_amount.getText().toString() : null;
txt_display_money.setText(edt_cargo_info_money_amount.getText());
dialog.dismiss();
}
});
cancel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
chk_cargo_info_money.setChecked(false);
txt_display_money.setText("0.0");
dialog.dismiss();
}
});
答案 0 :(得分:2)
String text = edt_cargo_info_money_amount.getText().toString();
edit_cargo_info_money_amount.setText(text.substring(0, text.length()-1);
substr(0,length-1)删除最后一个字符,然后我们将编辑文本设置为该新字符串。