我试图在一个片段工作中得到一个EditText.getText()。toString(),我已经阅读了关于这个问题的所有其他问题,但找不到解决方案:我有EditText.getText()。toString()在在给视图充气后,确认按钮的onClick方法,我已检查按钮的ID是否正确,但我没有找到错误。在logcat中我可以看到正确调用在相关行之后调用的saveWord方法 - 只是应该用editText填充的String总是为空。如果我在变量上放置一个硬编码字符串,它会按预期工作。
如果有人能提供帮助,我们将非常高兴!我可能只是一个愚蠢的错误?
这是我的代码:
public class BingoAddNewFragment extends Fragment {
private static final String LOG_TAG = BingoDataManager.class.getSimpleName();
View v;
public static final String DEFAULT_EDIT_FRAGMENT_TAG = "editFragmentTag";
private Button mConfirmButton;
EditText mAddWords;
String newWord;
String bWord1 = "";
String bWord2 = "";
String bWord3 = "";
String bWord4= "";
String bWord5= "";
String bWord6= "";
String bWord7= "";
String bWord8= "";
String bWord9= "";
String bWord10= "";
String bWord11= "";
String bWord12= "";
String bWord13= "";
String bWord14= "";
String bWord15= "";
String bWord16= "";
String[] bWord = {bWord1, bWord2, bWord3, bWord4, bWord5, bWord6, bWord7, bWord8, bWord9,
bWord10, bWord11, bWord12, bWord13, bWord14, bWord15, bWord16};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
v = inflater.inflate(R.layout.add_bingo_fragment, container, false);
//some other stuff
mConfirmButton = v.findViewById(R.id.button_confirm);
mAddWords = v.findViewById(R.id.editText_addWords);
mConfirmButton.setOnClickListener (new View.OnClickListener() {
@Override
public void onClick(View v) {
//The next line is not working (everything else seems fine) ->
newWord = mAddWords.getText().toString();
Log.d(LOG_TAG, "Begriff: " + newWord + " wird übergeben");
saveWord (newWord);
}
});
mSaveButton = v.findViewById(R.id.button_save_bingo);
mSaveButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
saveBingo();
}
});
public String[] saveWord (String newWord) {
Log.d(LOG_TAG, "Wort: " + newWord + " entgegengenommen.");
for (int i=0; i<16; i++) {
Log.d(LOG_TAG, "i steht bei: " +i);
if (bWord[i].equals("")) {
bWord[i] = newWord;
Log.d(LOG_TAG, "Word als " + (i+1) + ". Begriff gespeichert.");
break;
}
}
return bWord;
}
这是我的布局文件的摘录:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorLightBlue">
<EditText
android:id="@+id/editText_addWords"
android:layout_width="206dp"
android:layout_height="40dp"
android:layout_marginStart="16dp"
android:layout_marginTop="8dp"
android:ems="10"
android:hint="@string/input_word"
android:inputType="textPersonName"
android:textColor="@color/colorDarkBlue"
android:textColorHint="@drawable/selector"
android:textSize="12dp"
app:layout_constraintEnd_toStartOf="@+id/button_confirm"
app:layout_constraintHorizontal_bias="0.31"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/editText_title" />
我找到了一个解决方案 - 虽然我仍然不确定为什么它不起作用。我将按钮更改为ImageButtons,突然它完全正常。