所以，我试图用复选框更改方程式，我附上一个代码示例，看看是否有人可以告诉我我做错了什么。使用此代码，我只是在选中复选框时尝试不进行任何计算，并在未选中复选框时自动计算和填充其他字段。它完美运行，直到我检查，取消选中并重新检查复选框。我可以使用我的textview验证它的状态，但在选中或取消选中时，它会继续关注文本视图...感谢您的帮助！
公共类MainActivity扩展了ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final EditText editIn = (EditText) findViewById(R.id.editIn);
final EditText editFt = (EditText) findViewById(R.id.editFt);
final EditText editYd = (EditText) findViewById(R.id.editYd);
final TextView checkBoxChecked = (TextView) findViewById(R.id.checkBoxChecked);
final CheckBox checkBox = (CheckBox) findViewById(R.id.checkBox);
checkBox.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (checkBox.isChecked()) {
checkBoxChecked.setText("Check Box Checked");
} else {
checkBoxChecked.setText("Check Box NOT Checked!");
editIn.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int i, int i2, int i3) {
}
@Override
public void onTextChanged(CharSequence s, int i, int i2, int i3) {
}
@Override
public void afterTextChanged(Editable s) {
if (editIn.hasFocus()) {
try {
double in = Double.valueOf(editIn.getText().toString());
double ft = in / 12;
double yd = in / 36;
editFt.setText(String.format("%.2f", (ft)));
editYd.setText(String.format("%.2f", (yd)));
} catch (NumberFormatException e) {
e.printStackTrace();
}
}
}
});
editFt.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int i, int i2, int i3) {
}
@Override
public void onTextChanged(CharSequence s, int i, int i2, int i3) {
}
@Override
public void afterTextChanged(Editable s) {
if (editFt.hasFocus()) {
try {
double ft = Double.valueOf(editFt.getText().toString());
double in = ft * 12;
double yd = ft / 3;
editIn.setText(String.format("%.2f", (in)));
editYd.setText(String.format("%.2f", (yd)));
} catch (NumberFormatException e) {
e.printStackTrace();
}
}
}
});
editYd.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int i, int i2, int i3) {
}
@Override
public void onTextChanged(CharSequence s, int i, int i2, int i3) {
}
@Override
public void afterTextChanged(Editable s) {
if (editYd.hasFocus()) {
try {
double yd = Double.valueOf(editYd.getText().toString());
double in = yd * 36;
double ft = yd * 3;
editIn.setText(String.format("%.2f", (in)));
editFt.setText(String.format("%.2f", (ft)));
} catch (NumberFormatException e) {
e.printStackTrace();
}
}
}
});
}
}
});
}
}
答案 0 :(得分：0)
您需要添加setOnCheckedChangeListener，而不是onCLickListener。您还需要在OnTextChanged
中移动方程式@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final EditText editIn = (EditText) findViewById(R.id.editIn);
final EditText editFt = (EditText) findViewById(R.id.editFt);
final EditText editYd = (EditText) findViewById(R.id.editYd);
final TextView checkBoxChecked = (TextView) findViewById(R.id.checkBoxChecked);
final CheckBox checkBox = (CheckBox) findViewById(R.id.checkBox);
checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
checkBoxChecked.setText("Check Box Checked");
editIn.setText("");
editIn.setEnabled(false);
editIn.setFocusable(false);
editFt.setText("");
editFt.setEnabled(false);
editFt.setFocusable(false);
editYd.setText("");
editYd.setEnabled(false);
editYd.setFocusable(false);
} else {
editIn.setEnabled(true);
editIn.setFocusable(true);
editFt.setEnabled(true);
editFt.setFocusable(true);
editYd.setEnabled(true);
editYd.setFocusable(true);
checkBoxChecked.setText("Check Box NOT Checked!");
editIn.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int i, int i2, int i3) {
}
@Override
public void onTextChanged(CharSequence s, int i, int i2, int i3) {
try {
double in = Double.valueOf(editIn.getText().toString());
double ft = in / 12;
double yd = in / 36;
editFt.setText(String.format("%.2f", (ft)));
editYd.setText(String.format("%.2f", (yd)));
} catch (NumberFormatException e) {
e.printStackTrace();
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
editFt.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int i, int i2, int i3) {
}
@Override
public void onTextChanged(CharSequence s, int i, int i2, int i3) {
try {
double ft = Double.valueOf(editFt.getText().toString());
double in = ft * 12;
double yd = ft / 3;
editIn.setText(String.format("%.2f", (in)));
editYd.setText(String.format("%.2f", (yd)));
} catch (NumberFormatException e) {
e.printStackTrace();
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
editYd.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int i, int i2, int i3) {
}
@Override
public void onTextChanged(CharSequence s, int i, int i2, int i3) {
try {
double yd = Double.valueOf(editYd.getText().toString());
double in = yd * 36;
double ft = yd * 3;
editIn.setText(String.format("%.2f", (in)));
editFt.setText(String.format("%.2f", (ft)));
} catch (NumberFormatException e) {
e.printStackTrace();
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
}
}
});
}
更新尝试此操作，让我知道每次检查都会显示吐司并取消选中
checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
Toast.makeText(MainActivity.this, "Checked", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(MainActivity.this, "Not-Checked", Toast.LENGTH_SHORT).show();
}
}
});