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[英]How to pass textview value from adapter class to texview of another acivity
[英]How to pass value from adapter to another class
我正在嘗試從項目視圖中獲取開關 state
這是包含開關的布局文件,我想知道是否從另一個 class 檢查開關
我想在適配器中執行此操作並將值從適配器傳遞到另一個 class 通過檢查是否檢查開關或從 class 獲取布局並檢查是否檢查開關
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="50dp">
<TextView
android:id="@+id/studentName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Student Name"
android:textSize="25dp"/>
<Switch
android:id="@+id/attendanceSwitch"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentEnd="true"
android:layout_marginEnd="25dp"
android:checked="true"/>
</RelativeLayout>
這是我的適配器
public class StudentAdapter extends RecyclerView.Adapter<StudentAdapter.ViewHolder> {
private Context context;
private List<User> users;
public StudentAdapter(Context context, List<User> users) {
this.context = context;
this.users = users;
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.student_item, parent, false);
return new StudentAdapter.ViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull final ViewHolder holder, int position) {
final User user = users.get(position);
holder.studentName.setText(user.getStudentname() + " " + user.getLastname());
}
@Override
public int getItemCount() {
return users.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
public TextView studentName;
public Switch aSwitch;
public ViewHolder(View itemView) {
super(itemView);
studentName = itemView.findViewById(R.id.studentName);
aSwitch = itemView.findViewById(R.id.attendanceSwitch);
}
}
}
使用 SharedPreferences
public SharedPreferences sharedpreferences = getSharedPreferences("mySharedPreferences", MODE_PRIVATE);
public SharedPreferences.Editor PrefsEditor = sharedpreferences.edit();
存儲數據
PrefsEditor.putString("value", "MyString").apply();
獲取數據
String value = sharedpreferences.getString("value", "");
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