android - 如何在共享首选项中存储切换按钮状态并稍后在 android 中加载状态？

Question

问题是我想在共享首选项中存储我的 toogle 按钮状态，这样当我返回到应用程序时，我的 toogle 按钮将保持以前的状态。这是一种你想使用它吗？如果用户使按钮启用，这意味着当他返回时将显示按钮将启用。到目前为止我所做的是

tb_vibrate = (ToggleButton)this.findViewById(R.id.tb_vibrate);
tb_vibrate.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {

            if(tb_vibrate.isChecked())
            {
                Toast.makeText(ProfileActivity.this, "Toggle button is on", Toast.LENGTH_LONG).show();
                tb_vibrate.setChecked(true);
            }
            else {
                Toast.makeText(ProfileActivity.this, "Toggle button is Off", Toast.LENGTH_LONG).show();
                tb_vibrate.setChecked(false);
            }
        }
    });

这是我的 SharePreference 类

public class NotificationManager {

    private static final String PREFS_FILE_NAME = "AppNotificationManager";
    private static final String VIBRATE = "vibrate";
    private static final String NOTIFICATION_ALERT = "notification_alert";
    private static final String NOTIFICATION_SOUND = "notification_sound";
    private static final String CALL_RINGTONE = "call_ringtone";
    private static final String RINGTONE_VIBRATION = "ringtone_vibrate";

    public static void setVibrate(final Context ctx, final String vibrate) {
        final SharedPreferences prefs = ctx.getSharedPreferences(NotificationManager.PREFS_FILE_NAME, Context.MODE_PRIVATE);
        final SharedPreferences.Editor editor = prefs.edit();
        editor.putString(NotificationManager.VIBRATE, vibrate);
        editor.commit();
    }

    public static String getVibrate(final Context ctx) {
        return ctx.getSharedPreferences(NotificationManager.PREFS_FILE_NAME,
                Context.MODE_PRIVATE).getString(NotificationManager.VIBRATE, "");
    }


    }

那么如何创建我的共享偏好类来存储数据并在以后使用它呢？

Answer 1

你可以使用 SharedPreferences 存储您的 ToggleButton

的状态

The SharedPreferences class provides a general framework that allows you to save and retrieve persistent key-value pairs of primitive data types. You can use SharedPreferences to save any primitive data: booleans, floats, ints, longs, and strings. This data will persist across user sessions (even if your application is killed).

示例代码

SharedPreferences sp=getSharedPreferences("Login", Context.MODE_PRIVATE);
SharedPreferences.Editor Ed=sp.edit()

tb_vibrate = (ToggleButton)this.findViewById(R.id.tb_vibrate);
tb_vibrate.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {

            if(tb_vibrate.isChecked())
            {
                Toast.makeText(ProfileActivity.this, "Toggle button is on", Toast.LENGTH_LONG).show();
                tb_vibrate.setChecked(true);

                Ed.putBoolean("ISCHECKED",true);
                Ed.commit();

            }
            else {
                Toast.makeText(ProfileActivity.this, "Toggle button is Off", Toast.LENGTH_LONG).show();
                tb_vibrate.setChecked(false);
                Ed.putBoolean("ISCHECKED",false);
                Ed.commit();
            }
        }
    });

获取值使用下面的代码

SharedPreferences preferences = getSharedPreferences("MyPrefs", MODE_PRIVATE);
 boolean flag = preferences.getBoolean("ISCHECKED", false);
 if(flag){
        tb_vibrate.setChecked(true);
    }else {
        tb_vibrate.setChecked(false);
    }