Android的共享preferences例Android、preferences

由网友(人生得意须尽欢)分享简介:我想学习共享preferences,但我得到一个错误。I'm trying to learn SharedPreferences, but I'm getting an error.我的布局有一个按钮reeacts的方法 doThis My layout has one button that reeacts...

我想学习共享preferences,但我得到一个错误。

I'm trying to learn SharedPreferences, but I'm getting an error.

我的布局有一个按钮reeacts的方法 doThis

My layout has one button that reeacts to the method doThis

这是我的Java:

package com.example.sharedprefs;

import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends Activity {
    int i = 0;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

    }

    public void doThis (View view){
        i++;
        SharedPreferences sharedPref = getSharedPreferences("FileName",MODE_PRIVATE);
        SharedPreferences.Editor prefEditor = sharedPref.edit();
        prefEditor.putInt("userChoice",i);
        prefEditor.commit();
        int number = sharedPref.getInt("userChoice", 0);
        Toast.makeText(getApplicationContext(), number, Toast.LENGTH_LONG).show();
    }

}

只有我可以在logcat中精确定位的是 10-15 19:28:17.707:E / AndroidRuntime(16657):$ android.content.res.Resources NotFoundException:产生的原因字符串资源ID#为0x1

推荐答案

您敬酒不正确。您传递一个数字土司希望它会给一个字符串,反而是认为它应该找一个字符串资源的价值。尝试:

Your toast is incorrect. You are passing a number into the toast hoping that it will give a string, instead is thinks it should be looking up a string resource value. Try:

Toast.makeText(getContext(), number + "" , Toast.LENGTH_LONG).show();

编辑,除此之外,你的code是罚款。

Edit, other than that, your code is fine.

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