是的，我一直在讨论这个话题的几个问题。这是关于 textWatcher 字段上的 setText 的。我对这一切都很陌生，也许这就是为什么还没有能够应用一个好的修复。我不是一个解释类型，所以......这是我的代码：
package com.newera.speedsnfeeds;
import java.math.BigDecimal;
import java.math.RoundingMode;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
public class Main1Activity extends Activity implements TextWatcher {
private EditText dia, sfm, rpm,flutes,load,feed;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main1);
dia = (EditText) findViewById(R.id.dia);
dia.addTextChangedListener(this);
sfm = (EditText) findViewById(R.id.sfm);
sfm.addTextChangedListener(this);
rpm = (EditText) findViewById(R.id.rpm);
rpm.addTextChangedListener(this);
flutes = (EditText) findViewById(R.id.flutes);
flutes.addTextChangedListener(this);
load = (EditText) findViewById(R.id.load);
load.addTextChangedListener(this);
feed = (EditText) findViewById(R.id.feed);
feed.addTextChangedListener(this);
rpm.setText("1");
feed.setText("");
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
calculate();
}
@SuppressLint("UseValueOf")
private void calculate() {
if (dia.getText().toString().compareTo("") == 0
|| sfm.getText().toString().compareTo("") == 0
|| rpm.getText().toString().compareTo("") == 0
||flutes.getText().toString().compareTo("") == 0
||load.getText().toString().compareTo("") == 0)
{
//rpm.setText("1");
//feed.setText("1");
}else{
if (dia.getText().toString().compareTo(".") == 0
|| dia.getText().toString().compareTo("-") == 0
|| dia.getText().toString().compareTo("-0") == 0
|| dia.getText().toString().compareTo("-00") == 0
|| dia.getText().toString().compareTo("-000") == 0
|| dia.getText().toString().compareTo("-0000") == 0
|| dia.getText().toString().compareTo("-.") == 0
|| sfm.getText().toString().compareTo(".") == 0
|| sfm.getText().toString().compareTo("-") == 0
|| sfm.getText().toString().compareTo("-0") == 0
|| sfm.getText().toString().compareTo("-00") == 0
|| sfm.getText().toString().compareTo("-000") == 0
|| sfm.getText().toString().compareTo("-0000") == 0
|| sfm.getText().toString().compareTo("-.") == 0
|| rpm.getText().toString().compareTo("-") == 0
|| rpm.getText().toString().compareTo("-0") == 0
|| rpm.getText().toString().compareTo("-00") == 0
|| rpm.getText().toString().compareTo("-000") == 0
|| rpm.getText().toString().compareTo("-0000") == 0
|| flutes.getText().toString().compareTo("-") == 0
|| flutes.getText().toString().compareTo("-0") == 0
|| flutes.getText().toString().compareTo("-00") == 0
|| flutes.getText().toString().compareTo("-000") == 0
|| flutes.getText().toString().compareTo("-0000") == 0
|| load.getText().toString().compareTo("-") == 0
|| load.getText().toString().compareTo("-0") == 0
|| load.getText().toString().compareTo("-00") == 0
|| load.getText().toString().compareTo("-000") == 0
|| load.getText().toString().compareTo("-0000") == 0
|| feed.getText().toString().compareTo("-") == 0
|| feed.getText().toString().compareTo("-0") == 0
|| feed.getText().toString().compareTo("-00") == 0
|| feed.getText().toString().compareTo("-000") == 0
|| feed.getText().toString().compareTo("-0000") == 0)
{
//rpm.setText("1");
//feed.setText("1");
} else {
float diam = Float.valueOf(dia.getText().toString());
float sfmm = Float.valueOf(sfm.getText().toString());
float rpmm = Float.valueOf(rpm.getText().toString());
float flutesm = Float.valueOf(flutes.getText().toString());
float loadm = Float.valueOf(load.getText().toString());
BigDecimal trpm = new BigDecimal((sfmm *3.82 / diam));
trpm = trpm.setScale(0,RoundingMode.UP);
BigDecimal tfeed = new BigDecimal((rpmm * flutesm * loadm));
tfeed = tfeed.setScale(1,RoundingMode.UP);
rpm.setText("1"+ trpm);
feed.setText("1"+tfeed);
}
}
{
}
}
}
它还没有完成我需要让它能够计算 sfm 和负载是它需要编辑文本字段的原因。
我已经阅读了关于同一问题的其他问题，但它们只是在我无法应用这些想法的情况下有所不同。可能是因为我对一般编程很陌生。
希望这是开始提问的好方法。
PS 对凌乱的代码感到抱歉，希望该代码可以帮助某人向我展示如何对我当前的代码进行修复。也不要犹豫让我知道这是否太不清楚，需要 xml 等。