如何获取edittext变量:javaandroid

Question

我想为editText获取不同的变量，我用java(LOOP(而不是XML编码。

我正在做一个项目，用户被问到你提供了多少课程？，如果是10，则EditText将出现10次。但我想得到每个editText的变量名及其值。我只得到最后一个的价值。

public class CourseEnter extends AppCompatActivity {
private TextInputLayout noOfCourse, textInputLayout,
courseCreditLoadInputLayout, courseScoreInputLayout;
private TextInputLayout dropDown;
private int i;
private ProgressDialog dialog;
private LinearLayout linearLayout;
private TextInputEditText courseCode, courseTitle, courseCreditLoad, courseScore;
String[] update;
ArrayList<String> courseTitles= new ArrayList<String>();//not used for now
ArrayList<String> courseCodes= new ArrayList<String>();//not used for now
ArrayList<String> courseLoads= new ArrayList<String>();//not used for now
ArrayList<String> courseScores= new ArrayList<String>();//not used for now
String courseTitleId;
private Button buttonNext;
private Button button;
private TextInputLayout courseCodeInputLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_course_enter);
String[] SEMESTERS = new String[]{"First Semester", "Second Semester"};
String[]   LEVELS = new String[] {"100 Level", "200 Level", "300 Level", "400 Level","500 Level", "600 Level"
,"700 Level"};
dropDown = findViewById(R.id.dropdownM);
courser = findViewById(R.id.coureser);
ArrayAdapter<String> adapter=new ArrayAdapter<>(getApplicationContext(),R.layout.item_list,LEVELS);
AutoCompleteTextView editTextFilledExposedDropdown =
findViewById(R.id.autoCompleteViewForLevel);
editTextFilledExposedDropdown.setAdapter(adapter);
ArrayAdapter<String> adapterSemester = new ArrayAdapter<>(getApplicationContext(), R.layout.item_list, SEMESTERS);
AutoCompleteTextView editSEMESTER =
findViewById(R.id.semester2);
editSEMESTER.setAdapter(adapterSemester);
buttonNext = findViewById(R.id.secondButton);

buttonNext.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
courseColumn();
}
});
}
void courseColumn() {
noOfCourse = findViewById(R.id.numberOfCourses);
if (!TextUtils.isEmpty(noOfCourse.getEditText().getText().toString())) {
String generateCourse = noOfCourse.getEditText().getText().toString();
int courseToInt = Integer.parseInt(generateCourse);

linearLayout = findViewById(R.id.linearLayout);

for (i = 1; i <= courseToInt; i++) {
textInputLayout = new TextInputLayout(this);
courseTitle = new TextInputEditText(this);
textInputLayout.setHelperText("Enter Course Title for Course " + i + ":");
textInputLayout.setHelperTextEnabled(true);
courseTitle.setId(i);
textInputLayout.setHintTextColor(android.content.res.ColorStateList.valueOf(Color.RED));
//courseTitle.setHintTextColor(Color.RED);
courseTitle.setTextColor(Color.RED);
String a = Integer.toString(i);
courseTitleId = "courseTitle" + a;
// update[i]=courseTitleId;
//For Course Code
courseCodeInputLayout = new TextInputLayout(this);
courseCode = new TextInputEditText(this);
courseCodeInputLayout.setHelperText("Enter Course Code for Course " + i + ":");
courseCodeInputLayout.setHelperTextEnabled(true);
courseCode.setAllCaps(true);
// lastly added
courseCode.setId(i);

//for Course Credit Load
courseCreditLoadInputLayout = new TextInputLayout(this);
courseCreditLoad = new TextInputEditText(this);
courseCreditLoadInputLayout.setHelperText("Enter Course Credit 
or Unit for Course " + i + " only numbers" + ":");
courseCreditLoadInputLayout.setHelperTextEnabled(true);
courseCreditLoad.setAllCaps(true);
courseCreditLoad.setInputType(InputType.TYPE_CLASS_NUMBER);
courseCreditLoadInputLayout.setCounterEnabled(true);
courseCreditLoadInputLayout.setCounterMaxLength(1);
//for Score
courseScoreInputLayout = new TextInputLayout(this);
courseScore = new TextInputEditText(this);
courseScoreInputLayout.setHelperText("Enter Score for Course " 
+ i + " only numbers" + ":");
courseScoreInputLayout.setHelperTextEnabled(true);
courseScore.setAllCaps(true);
courseScore.setInputType(InputType.TYPE_CLASS_NUMBER);
courseScoreInputLayout.setCounterEnabled(true);
courseScoreInputLayout.setCounterMaxLength(3);
Button btn = new Button(this);
for (int bt = 1; bt <= i; bt++) {
btn.setText("STEP " + bt);
btn.setVisibility(View.VISIBLE);
btn.setTextColor(Color.RED);
btn.setBackgroundColor(Color.YELLOW);
}
//toString methods of all the inputs
String courseT= courseTitle.getText().toString();
String courseC= courseCode.getText().toString();
String courseL= courseCreditLoad.getText().toString();
String courseS= courseScore.getText().toString();
courseTitle.setLayoutParams(new 
LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, 
LinearLayout.LayoutParams.WRAP_CONTENT));
linearLayout.addView(btn);
linearLayout.addView(textInputLayout);
linearLayout.addView(courseTitle);
linearLayout.addView(courseCodeInputLayout);
linearLayout.addView(courseCode);
linearLayout.addView(courseCreditLoadInputLayout);
linearLayout.addView(courseCreditLoad);
linearLayout.addView(courseScoreInputLayout);
linearLayout.addView(courseScore);

//remeber to change the button id and name=
button = new Button(this);
button.setVisibility(View.VISIBLE);
button.setEnabled(true);
button.setBackgroundColor(Color.MAGENTA);
button.setText("Proceed");
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog = new ProgressDialog(CourseEnter.this);
dialog.setTitle("GUIDE FROM VICTORHEZ!!!");
dialog.setMessage("For you to save your result, you 
must fill all fields provided above");
dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
dialog.setCancelable(false);
dialog.setButton(DialogInterface.BUTTON_NEGATIVE, 
"OKAY", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialoga, int 
which) {
dialog.dismiss();
proceedMethod();
}
});
dialog.setButton(DialogInterface.BUTTON_POSITIVE, "GO 
BACK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialoga, int 
which) {
dialog.dismiss();
}
});
dialog.show();

}
});
}
linearLayout.addView(button);
} else {
Toast.makeText(this, "Enter Field: ", Toast.LENGTH_LONG).show();
noOfCourse.setError("ENTER FIELD");
}
}
private void proceedMethod() {
if (TextUtils.isEmpty(courseTitle.getText()))
{
textInputLayout.setError("Error: Enter Field");
}
else if(TextUtils.isEmpty(courseCode.getText()))
{
courseCodeInputLayout.setError("Error: Enter Field");
}
else if(TextUtils.isEmpty(courseCreditLoad.getText()))
{
courseCreditLoadInputLayout.setError("Error: Enter Field");
}
else if(TextUtils.isEmpty(courseScore.getText()))
{
courseScoreInputLayout.setError("Error: Enter Field");
}
else
{
Toast.makeText(CourseEnter.this,"VICTORHEZ",Toast.LENGTH_LONG).show();
}
}

}

Answer 1

将其存储在数组、映射或setTag中。您刚刚创建了元素，但无法再次访问它们。这取决于您计划如何使用这些元素。如果你能为这个问题添加更多的细节，那么也许我们可以设定最佳答案。

Answer 2

在TableLayout上动态编辑文本，然后按行访问它。

Idk，可能是

String[] value = new String[YOUR-COURSE-NUMBER];
for (int i = 0; i < YOUR-COURSE-NUMBER; i++) {
TableRow tableRow = (TableRow) yourTableLayout.getChildAt(i);
EditText yourET = (EditText) tableRow.getChildAt(0);
value[i]= yourET.getText().toString();
}