Question

我正在尝试使用共享偏好设置保存复选框。但是......随机复选框正在被选中。请帮我调试代码...... 基本上创建了三个checkboxese但我无法保存它们......

    package com.isit.finale;



import android.app.Activity;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.view.Menu;

public class History extends Activity implements OnClickListener {

    CheckBox c1;
    CheckBox c2;
    CheckBox c3;
    Button b1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.history);
    c1 = (CheckBox) findViewById(R.id.checkBox1);
    c2 = (CheckBox) findViewById(R.id.checkBox2);
    c3 = (CheckBox) findViewById(R.id.checkBox3);
        b1 = (Button) findViewById(R.id.button1);
        b1.setOnClickListener(this);
        loadSavedPreferences();
        }



    private void loadSavedPreferences() {
        // TODO Auto-generated method stub
        SharedPreferences sharedPreferences= PreferenceManager.getDefaultSharedPreferences(this);
    boolean c1Val= sharedPreferences.getBoolean("CheckBox_Value", false);
    boolean c2Val= sharedPreferences.getBoolean("CheckBox_Value", false);
    boolean c3Val= sharedPreferences.getBoolean("CheckBox_Value", false);

            if (c1Val)
            {c1.setChecked(true);
                    }
            else{ 
                {c1.setChecked(false);
                    }
            };

             if(c2Val){
                c2.setChecked(true);
                } 
            else{ c2.setChecked(false);
             };

            if (c3Val){
                c3.setChecked(true);
             } 
            else{ c3.setChecked(false);
             }

    }


private void savePreferences(String key, boolean value){
    SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);

    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
            if(c1.isChecked())
                savePreferences("CheckBox_Value",c1.isChecked());           if(c2.isChecked())
savePreferences("CheckBox_Value",c2.isChecked()         if(c3.isChecked())
savePreferences("CheckBox_Value",c3.isChecked());
finish();
    }
}`

Answer 1

您尚未保存复选框偏好设置。

private void savePreferences(String key, boolean value){
    SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
     SharedPreferences.Editor editor = sharedPreferences.edit();
     editor.putBoolean(key, value);
     editor.commit();
    }

请记住为每个复选框首选项添加唯一键

CheckBox_Value1
CheckBox_Value2
CheckBox_Value3

在加载时检索正确的密钥。

Answer 2

而不是每个复选框的相同键，您应该为每个复选框创建唯一的键。

checkBox_value_1
checkBox_value_2

保存android中的复选框状态

2 个答案: