我正在为测验应用项目工作。我有一个RecyclerView，每个都包含TextView，两个Checkbox和EditText。我想要的是当我检查第二个复选框时，它将启用EditText。我已经完成了这项工作。但问题是如果我检查复选框并在第一行的EditText中键入内容，当我向下滚动其他一些镜像EditText状态时，即使我没有选中Checkbox以启用该行的EditText。
这是我的适配器代码：
public class StudentAdapter extends RecyclerView.Adapter<StudentAdapter.StudentViewHolder> {
private LayoutInflater inflator;
private int status;
Typeface typeface;
List<Student> students = Collections.emptyList();
public StudentAdapter(Context context, List<Student> students, String Font) {
inflator = LayoutInflater.from(context);
this.students = students;
typeface = Typeface.createFromAsset(context.getAssets(), Font);
}
@Override
public StudentViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflator.inflate(R.layout.student_row, parent, false);
StudentViewHolder studentViewHolder = new StudentViewHolder(view);
return studentViewHolder;
}
@Override
public void onBindViewHolder(final StudentViewHolder holder, final int position) {
final Student currentStudent = students.get(position);
holder.studentName.setText(currentStudent.student);
holder.chbIllegal.setTag(students.get(position));
holder.editText.setTag(students.get(position));
holder.chbIllegal.setChecked(students.get(position).isSelected());
holder.chbIllegal.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
CheckBox cb = (CheckBox) v;
final Student contact = (Student) cb.getTag();
contact.setSelected(cb.isChecked());
students.get(position).setSelected(cb.isChecked());
// this will enable editText if checkbox is checked
if (cb.isChecked()) {
holder.editText.setEnabled(true);
holder.editText.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) {
}
@Override
public void afterTextChanged(Editable s) {
String Illegal = holder.editText.getText().toString();
contact.setAgaints_rule(Illegal);
Log.d("GExam", currentStudent.student + " " + Illegal);
}
});
holder.chbIllegal.setOnClickListener(null);
holder.chbIllegal.setTag(students.get(position));
} else {
holder.editText.setEnabled(false);
}
}
});
if (currentStudent.getStatus() == 1) {
holder.chbPresent.setChecked(true);
} else if (currentStudent.getStatus() == 0) {
holder.chbPresent.setChecked(false);
}
}
@Override
public int getItemCount() {
return students.size();
}
class StudentViewHolder extends RecyclerView.ViewHolder {
TextView studentName;
CheckBox chbPresent, chbIllegal;
EditText editText;
public StudentViewHolder(View itemView) {
super(itemView);
studentName = (TextView) itemView.findViewById(R.id.StudentlistText);
this.studentName.setTypeface(typeface);
editText = (EditText) itemView.findViewById(R.id.edtAgaintsRule);
chbPresent = (CheckBox) itemView.findViewById(R.id.chbPresent);
// chbIllegal will handle the editText
chbIllegal = (CheckBox) itemView.findViewById(R.id.chbIllegal);
editText.setEnabled(false);
}
}
public List<Student> getStudentList() {
return students;
}
}
如何才能启用选中复选框的行的EditText？
答案 0 :(得分：0)
最后，我的老师帮助解决了我的问题。我改变的是我将侦听器从onBindViewHolder移动到我的ViewHolder类，如下所示：
public class StudentAdapter extends RecyclerView.Adapter<StudentAdapter.StudentViewHolder> {
private LayoutInflater inflator;
private int status;
Typeface typeface;
List<Student> students = Collections.emptyList();
public StudentAdapter(Context context, List<Student> students, String Font) {
inflator = LayoutInflater.from(context);
this.students = students;
typeface = Typeface.createFromAsset(context.getAssets(), Font);
}
@Override
public StudentViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflator.inflate(R.layout.student_row, parent, false);
StudentViewHolder studentViewHolder = new StudentViewHolder(view);
return studentViewHolder;
}
@Override
public void onBindViewHolder(final StudentViewHolder holder, final int position) {
final Student currentStudent = students.get(position);
holder.studentName.setText(currentStudent.student);
holder.chbIllegal.setTag(students.get(position));
holder.editText.setTag(students.get(position));
holder.editText.setText(currentStudent.getAgaints_rule());
if (currentStudent.isSelected()) {
holder.editText.setEnabled(true);
}else{
holder.editText.setEnabled(false);
}
holder.chbIllegal.setChecked(students.get(position).isSelected());
if (currentStudent.getStatus() == 1) {
holder.chbPresent.setChecked(true);
} else if (currentStudent.getStatus() == 0) {
holder.chbPresent.setChecked(false);
}
}
@Override
public int getItemCount() {
return students.size();
}
class StudentViewHolder extends RecyclerView.ViewHolder {
TextView studentName;
CheckBox chbPresent, chbIllegal;
EditText editText;
public StudentViewHolder(View itemView) {
super(itemView);
studentName = (TextView) itemView.findViewById(R.id.StudentlistText);
this.studentName.setTypeface(typeface);
editText = (EditText) itemView.findViewById(R.id.edtAgaintsRule);
chbPresent = (CheckBox) itemView.findViewById(R.id.chbPresent);
chbIllegal = (CheckBox) itemView.findViewById(R.id.chbIllegal);
chbIllegal.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
CheckBox cb = (CheckBox) v;
Student s = (Student) v.getTag();
Log.e("GExam", String.valueOf(cb.isChecked()));
s.setSelected(cb.isChecked());
StudentViewHolder.this.editText.setEnabled(cb.isChecked());
}
});
editText.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) {
}
@Override
public void afterTextChanged(Editable s) {
Student student = (Student) StudentViewHolder.this.editText.getTag();
student.setAgaints_rule(s.toString());
}
});
}
}
public List<Student> getStudentList() {
return students;
}
}