如何保存CheckedTextView复选框的状态，以便在退出后保持选中状态？

// 保存状态
SharedPreferences sharedPreferences = getSharedPreferences("MyPrefs", MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putBoolean("isChecked", checkedTextView.isChecked());
editor.apply();

// 读取状态
SharedPreferences sharedPreferences = getSharedPreferences("MyPrefs", MODE_PRIVATE);
boolean isChecked = sharedPreferences.getBoolean("isChecked", false);
checkedTextView.setChecked(isChecked);

// 创建数据库表
CREATE TABLE checkbox_state (
    id INTEGER PRIMARY KEY,
    isChecked INTEGER
);

// 保存状态
ContentValues values = new ContentValues();
values.put("isChecked", checkedTextView.isChecked() ? 1 : 0);
long rowId = db.insert("checkbox_state", null, values);

// 读取状态
Cursor cursor = db.query("checkbox_state", new String[]{"isChecked"}, null, null, null, null, null);
if (cursor.moveToFirst()) {
    boolean isChecked = cursor.getInt(cursor.getColumnIndex("isChecked")) == 1;
    checkedTextView.setChecked(isChecked);
}
cursor.close();

// 保存状态
File file = new File(getFilesDir(), "checkbox_state.txt");
try {
    FileWriter writer = new FileWriter(file);
    writer.write(checkedTextView.isChecked() ? "1" : "0");
    writer.close();
} catch (IOException e) {
    e.printStackTrace();
}

// 读取状态
File file = new File(getFilesDir(), "checkbox_state.txt");
try {
    BufferedReader reader = new BufferedReader(new FileReader(file));
    String line = reader.readLine();
    boolean isChecked = line.equals("1");
    checkedTextView.setChecked(isChecked);
    reader.close();
} catch (IOException e) {
    e.printStackTrace();
}