我有我使用TextWatcher 9個的EditText領域,我所希望得到的工作是,如果這九個的EditText字段填寫啓用按鈕,如果不禁止,啓用按鈕,一旦所有的EditText字段不爲空
我在OnCreate中禁用按鈕,所以當程序第一次運行按鈕時是禁用的,但是如果我在一個編輯文本字段中輸入一個數字,即使其他八個字段都是空的,也會一次刪除所有文本字段中的按鈕仍處於啓用狀態。
EditText T1, T2, T3, T4, T5, T6, T7, T8, T9;
// Button buttonClear;
Button ButtonScore;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
T1 = (EditText) findViewById(R.id.editText2);
T2 = (EditText) findViewById(R.id.editText3);
T3 = (EditText) findViewById(R.id.editText4);
T4 = (EditText) findViewById(R.id.editText5);
T5 = (EditText) findViewById(R.id.editText6);
T6 = (EditText) findViewById(R.id.editText7);
T7 = (EditText) findViewById(R.id.editText8);
T8 = (EditText) findViewById(R.id.editText9);
T9 = (EditText) findViewById(R.id.editText10);
ButtonScore = (Button) findViewById(R.id.buttonScore);
ButtonScore.setEnabled(false);
T1.addTextChangedListener(watcher);
T2.addTextChangedListener(watcher);
T3.addTextChangedListener(watcher);
T4.addTextChangedListener(watcher);
T5.addTextChangedListener(watcher);
T6.addTextChangedListener(watcher);
T7.addTextChangedListener(watcher);
T8.addTextChangedListener(watcher);
T9.addTextChangedListener(watcher);
//updateButtonScore();
}
private final TextWatcher watcher = 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)
{}
@Override
public void afterTextChanged(Editable s) {
if (T1.getText().toString().length() == 0 && T2.getText().toString().length() == 0 &&
T3.getText().toString().length() == 0 && T4.getText().toString().length() == 0 &&
T5.toString().trim().length() == 0 && T6.getText().toString().length() == 0 &&
T7.getText().toString().length() == 0 && T8.getText().toString().length() == 0 &&
T9.getText().toString().length() == 0) {
ButtonScore.setEnabled(false);
} else {
ButtonScore.setEnabled(true);
}
}
};
我錯過了||和.trim,我刪除它們,它現在正在工作,這是一段時間,因爲我與Java的工作。 – David 2014-10-04 20:32:14