如何从共享首选项加载数据

Question

这是我保存数据的代码：

private void Save_it() {
        sharedPreferences = getPreferences(MODE_PRIVATE);
        editor = sharedPreferences.edit();
        editor.putInt(SAVED_HOUR_1, selected_hour_1);
        editor.putInt(SAVED_MINUTE_1, selected_minute_1);
        editor.putInt(SAVED_VOLUME_1, selected_volume_1);
        editor.putString(SAVED_TIME_TEXT_1, Name_Time_1);
        editor.putString(SAVED_VOLUME_TEXT_1, Name_Volume_1);
        editor.putBoolean(CHECK_IF_SET_TIME_1, checktime_1);
        editor.putBoolean(CHECK_IF_SET_VOLUME_1, checkvolume_1);
        editor.putBoolean(CHECK_IF_SET_1, checkset_1);
        editor.putInt(SAVED_HOUR_2, selected_hour_2);
        editor.putInt(SAVED_MINUTE_2, selected_minute_2);
        editor.putInt(SAVED_VOLUME_2, selected_volume_2);
        editor.putString(SAVED_TIME_TEXT_2, Name_Time_2);
        editor.putString(SAVED_VOLUME_TEXT_2, Name_Volume_2);
        editor.putBoolean(CHECK_IF_SET_TIME_2, checktime_2);
        editor.putBoolean(CHECK_IF_SET_VOLUME_2, checkvolume_2);
        editor.putBoolean(CHECK_IF_SET_2, checkset_2);
        editor.putBoolean(CHECK_IF_ENABLED_2, checkenabled_2);
        editor.apply();
}

这是我的加载数据代码：

private void Load_it() {
        sharedPreferences = getPreferences(MODE_PRIVATE);
        String Saved_Time_Text_1 = sharedPreferences.getString(SAVED_TIME_TEXT_1, Name_Time_1);
        set_time_1 = (TextView)findViewById(R.id.text_time_1);
        set_time_1.setText(Saved_Time_Text_1);
        String Saved_Volume_Text_1 = sharedPreferences.getString(SAVED_VOLUME_TEXT_1, Name_Volume_1);
        set_volume_1 = (TextView)findViewById(R.id.text_volume_1);
        set_volume_1.setText(Saved_Volume_Text_1);
        selected_hour_1 = sharedPreferences.getInt(SAVED_HOUR_1, 0);
        selected_minute_1 = sharedPreferences.getInt(SAVED_MINUTE_1, 0);
        selected_volume_1 = sharedPreferences.getInt(SAVED_VOLUME_1, 0);
        checktime_1 = sharedPreferences.getBoolean(CHECK_IF_SET_TIME_1, false);
        checkvolume_1 = sharedPreferences.getBoolean(CHECK_IF_SET_VOLUME_1, false);
        checkset_1 = sharedPreferences.getBoolean(CHECK_IF_SET_1, false);
        String Saved_Time_Text_2 = sharedPreferences.getString(SAVED_TIME_TEXT_2, Name_Time_2);
        set_time_2 = (TextView)findViewById(R.id.text_time_2);
        set_time_2.setText(Saved_Time_Text_2);
        String Saved_Volume_Text_2 = sharedPreferences.getString(SAVED_VOLUME_TEXT_2, Name_Volume_2);
        set_volume_2 = (TextView)findViewById(R.id.text_volume_2);
        set_volume_2.setText(Saved_Volume_Text_2);
        selected_hour_2 = sharedPreferences.getInt(SAVED_HOUR_2, 0);
        selected_minute_2 = sharedPreferences.getInt(SAVED_MINUTE_2, 0);
        selected_volume_2 = sharedPreferences.getInt(SAVED_VOLUME_2, 0);
        checktime_2 = sharedPreferences.getBoolean(CHECK_IF_SET_TIME_2, false);
        checkvolume_2 = sharedPreferences.getBoolean(CHECK_IF_SET_VOLUME_2, false);
        checkset_2 = sharedPreferences.getBoolean(CHECK_IF_SET_2, false);
        checkenabled_2 = sharedPreferences.getBoolean(CHECK_IF_ENABLED_2, false);
}

但是负载无法正常工作。我在 textView 中使用 setText 的数据，并设置布尔变量和整数变量。我想加载代码中的问题：我使用它不正确。怎么了？帮助！！在此处编辑： goo.gl/fhIxdv

Answer 1

请看这篇文章，也看看我的回答;我已经展示了一种存储和获取首选项的正确方法。点击这里

尝试类似的东西

private String DEFAULT_SP_KEY = "default_sp_key";
private void Save_it(Context context) {
    SharedPreferences sharedPreferences = context.getSharedPreferences(DEFAULT_SP_KEY, 0);
    SharedPreferences.Editor editor = sharedPreferences.edit();
    editor.putInt(SAVED_HOUR_1, selected_hour_1);
    editor.putInt(SAVED_MINUTE_1, selected_minute_1);
    editor.putInt(SAVED_VOLUME_1, selected_volume_1);
    editor.putString(SAVED_TIME_TEXT_1, Name_Time_1);
    editor.putString(SAVED_VOLUME_TEXT_1, Name_Volume_1);
    editor.putBoolean(CHECK_IF_SET_TIME_1, checktime_1);
    editor.putBoolean(CHECK_IF_SET_VOLUME_1, checkvolume_1);
    editor.putBoolean(CHECK_IF_SET_1, checkset_1);
    editor.putInt(SAVED_HOUR_2, selected_hour_2);
    editor.putInt(SAVED_MINUTE_2, selected_minute_2);
    editor.putInt(SAVED_VOLUME_2, selected_volume_2);
    editor.putString(SAVED_TIME_TEXT_2, Name_Time_2);
    editor.putString(SAVED_VOLUME_TEXT_2, Name_Volume_2);
    editor.putBoolean(CHECK_IF_SET_TIME_2, checktime_2);
    editor.putBoolean(CHECK_IF_SET_VOLUME_2, checkvolume_2);
    editor.putBoolean(CHECK_IF_SET_2, checkset_2);
    editor.putBoolean(CHECK_IF_ENABLED_2, checkenabled_2);
    editor.apply();
}
private void Load_it(Context context) {
    SharedPreferences sharedPreferences = context.getSharedPreferences(DEFAULT_SP_KEY, 0);
    String Saved_Time_Text_1 = sharedPreferences.getString(SAVED_TIME_TEXT_1, Name_Time_1);
    set_time_1 = (TextView)findViewById(R.id.text_time_1);
    set_time_1.setText(Saved_Time_Text_1);
    String Saved_Volume_Text_1 = sharedPreferences.getString(SAVED_VOLUME_TEXT_1, Name_Volume_1);
    set_volume_1 = (TextView)findViewById(R.id.text_volume_1);
    set_volume_1.setText(Saved_Volume_Text_1);
    selected_hour_1 = sharedPreferences.getInt(SAVED_HOUR_1, 0);
    selected_minute_1 = sharedPreferences.getInt(SAVED_MINUTE_1, 0);
    selected_volume_1 = sharedPreferences.getInt(SAVED_VOLUME_1, 0);
    checktime_1 = sharedPreferences.getBoolean(CHECK_IF_SET_TIME_1, false);
    checkvolume_1 = sharedPreferences.getBoolean(CHECK_IF_SET_VOLUME_1, false);
    checkset_1 = sharedPreferences.getBoolean(CHECK_IF_SET_1, false);
    String Saved_Time_Text_2 = sharedPreferences.getString(SAVED_TIME_TEXT_2, Name_Time_2);
    set_time_2 = (TextView)findViewById(R.id.text_time_2);
    set_time_2.setText(Saved_Time_Text_2);
    String Saved_Volume_Text_2 = sharedPreferences.getString(SAVED_VOLUME_TEXT_2, Name_Volume_2);
    set_volume_2 = (TextView)findViewById(R.id.text_volume_2);
    set_volume_2.setText(Saved_Volume_Text_2);
    selected_hour_2 = sharedPreferences.getInt(SAVED_HOUR_2, 0);
    selected_minute_2 = sharedPreferences.getInt(SAVED_MINUTE_2, 0);
    selected_volume_2 = sharedPreferences.getInt(SAVED_VOLUME_2, 0);
    checktime_2 = sharedPreferences.getBoolean(CHECK_IF_SET_TIME_2, false);
    checkvolume_2 = sharedPreferences.getBoolean(CHECK_IF_SET_VOLUME_2, false);
    checkset_2 = sharedPreferences.getBoolean(CHECK_IF_SET_2, false);
    checkenabled_2 = sharedPreferences.getBoolean(CHECK_IF_ENABLED_2, false);
}