Android-从SharedPreferences将backgroundresource设置为ImageView [英] Android - Set backgroundresource to ImageView from SharedPreferences

问题描述

我正在尝试从sharedpreferences中将BackgroundResource设置为ImageView.

I am trying to set a BackgroundResource to a ImageView from a sharedpreferences..

我的代码是

活动1中按钮的点击事件

On Click Event of Button from Activity 1

    SharedPreferences settings;
            SharedPreferences.Editor editor;

            settings = getSharedPreferences(PREFS_NAME, 0);
            editor = settings.edit();
            editor.putInt(GameScreen_SliderPuzzle1.key_image_id, R.drawable.image_3);

            editor.commit();

活动2

SharedPreferences image_display;
    String image_id;

    image_display = context.getSharedPreferences(GameScreen_SliderPuzzle1.PREFS_NAME, Context.MODE_MULTI_PROCESS);
    image_id = image_display.getString("key_image_id", "");     
    imageview.setBackgroundResource(image_id);

我的问题是sharedpreferences的值是字符串，而 setBackgroundResource 的值是Int我试图将字符串转换为int.但是应用程序崩溃了. TypeCast错误

my problem is sharedpreferences value is in string and setBackgroundResource value is Int I tried to convert string o int. but application crashes. TypeCast Error

推荐答案

尝试

image_id = image_display.getInt("key_image_id", 0); 

因为您需要int而不是String.

as you need int not String.

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