我有兩個 EdiText，當我在第一個 EdiText 中寫入數字時，我需要將第二個 EdiText 設置為 162 - 第一個。如果需要重新輸入第二個數字，則組件應重新計算第一個數字。如果我在第二個中寫一些東西，第一個的行為必須與第二個完全相同。下面是我的代碼，但它不起作用： inputScoreWe = findViewById(R.id.inputScoreWe); inputScoreYou = findViewById(R.id.inputScoreYou); View.OnClickListener inputScoreListener = new View.OnClickListener() { @Override public void onClick(View view) { try { int inputScoreWeInteger = Integer.parseInt(inputScoreWe.getText().toString()); int inputScoreYouInteger = Integer.parseInt(inputScoreYou.getText().toString()); if (inputScoreWeInteger > 0) { inputScoreYouInteger = 162 - inputScoreWeInteger; } else if (inputScoreYouInteger > 0) { inputScoreWeInteger = 162 - inputScoreYouInteger; } String s1 = inputScoreWeInteger + ""; String s2 = inputScoreYouInteger + ""; inputScoreWe.setText(s1); inputScoreYou.setText(s2); } catch (Exception e) { Toast.makeText(getApplicationContext(), "Error", Toast.LENGTH_LONG).show(); } } }; inputScoreWe.setOnClickListener(inputScoreListener); inputScoreYou.setOnClickListener(inputScoreListener);
3 回答
蕪湖不蕪
TA貢獻1796條經驗 獲得超7個贊
使用文本更改偵聽器在每次更改值時觸發
inputScoreWe.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if(s.length() > 0){
inputScoreYou.setText(162 - Integer.parseInt(inputScoreYou.getText().toString())+"");
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
楊魅力
TA貢獻1811條經驗 獲得超6個贊
將您的代碼替換為如下代碼
inputScoreWe = findViewById(R.id.inputScoreWe);
inputScoreYou = findViewById(R.id.inputScoreYou);
inputScoreWe.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (s.length() > 0) {
inputScoreYou.setText(162 - Integer.parseInt(inputScoreYou.getText().toString()) + "");
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
inputScoreYou.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (s.length() > 0) {
inputScoreWe.setText(162 - Integer.parseInt(inputScoreWe.getText().toString()) + "");
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
慕的地8271018
TA貢獻1796條經驗 獲得超4個贊
嘗試這個
brandET = findViewById(R.id.addCar_brand);
modelET = findViewById(R.id.addCar_model);
brandET.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
brandChange = hasFocus;
}
});
modelET.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
modelChange = hasFocus;
}
});
brandET.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (brandChange && count > 0) {
int dataFromBrand = Integer.parseInt(s.toString());
modelET.setText((162 - dataFromBrand) + "");
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
modelET.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (modelChange && count > 0) {
int dataFromModel = Integer.parseInt(s.toString());
brandET.setText((162 - dataFromModel) + "");
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
這里brandET和modelET是你的兩個編輯文本...brandChange和modelChange是兩個全局布爾數據
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