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我有一个带有 7 个复选框、1 个文本字段和一个保存按钮的应用程序.....我希望用户能够根据需要选择任意数量的复选框并在文本字段中键入并单击保存.....然后当他们再次打开应用程序时，应选中正确的复选框，并且他们键入的文本应在文本框中......

我几乎让它工作了，但是它似乎一次只保存一个复选框或根本没有保存，我似乎无法弄清楚我做错了什么......我已经阅读了所有线程和帖子，但似乎无法理解正确的....

任何帮助，将不胜感激

这是我的代码

package com.rapeventplannerchecklist.app.rapeventplannerchecklist;

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;

public class MainActivity extends Activity implements OnClickListener {

CheckBox checkBox;
CheckBox checkBox2;
CheckBox checkBox3;
CheckBox checkBox4;
CheckBox checkBox5;
CheckBox checkBox6;
CheckBox checkBox7;
EditText editText;
Button button;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    checkBox = (CheckBox) findViewById(R.id.checkBox1);
    checkBox2 = (CheckBox) findViewById(R.id.checkBox2);
    checkBox3 = (CheckBox) findViewById(R.id.checkBox3);
    checkBox4 = (CheckBox) findViewById(R.id.checkBox4);
    checkBox5 = (CheckBox) findViewById(R.id.checkBox5);
    checkBox6 = (CheckBox) findViewById(R.id.checkBox6);
    checkBox7 = (CheckBox) findViewById(R.id.checkBox7);
    editText = (EditText) findViewById(R.id.editText1);
    button = (Button) findViewById(R.id.button1);
    button.setOnClickListener(this);
    loadSavedPreferences();
}

private void loadSavedPreferences() {
    SharedPreferences sharedPreferences = PreferenceManager
            .getDefaultSharedPreferences(this);
    boolean checkBoxValue = sharedPreferences.getBoolean("CheckBox_Value", false);
    String name = sharedPreferences.getString("storedName", "YourName");
    if (checkBoxValue) {
        checkBox.setChecked(true);
    } else {
        checkBox.setChecked(false);
    }

    boolean checkBox2Value = sharedPreferences.getBoolean("CheckBox_Value2", false);
    if (checkBox2Value) {
        checkBox2.setChecked(true);
    } else {
        checkBox2.setChecked(false);
    }

    boolean checkBox3Value = sharedPreferences.getBoolean("CheckBox_Value3", false);
    if (checkBox3Value) {
        checkBox3.setChecked(true);
    } else {
        checkBox3.setChecked(false);
    }

    boolean checkBox4Value = sharedPreferences.getBoolean("CheckBox_Value4", false);
    if (checkBox4Value) {
        checkBox4.setChecked(true);
    } else {
        checkBox4.setChecked(false);
    }

    boolean checkBox5Value = sharedPreferences.getBoolean("CheckBox_Value5", false);
    if (checkBox5Value) {
        checkBox5.setChecked(true);
    } else {
        checkBox5.setChecked(false);
    }

    boolean checkBox6Value = sharedPreferences.getBoolean("CheckBox_Value6", false);
    if (checkBox6Value) {
        checkBox6.setChecked(true);
    } else {
        checkBox6.setChecked(false);
    }

    boolean checkBox7Value = sharedPreferences.getBoolean("CheckBox_Value7", false);
    if (checkBox7Value) {
        checkBox7.setChecked(true);
    } else {
        checkBox7.setChecked(false);
    }



    editText.setText(name);
}

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

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

@Override
public void onClick(View v) {
    // TODO Auto-generated method stub
    savePreferences("CheckBox_Value", checkBox.isChecked());
    if (checkBox.isChecked())
        savePreferences("CheckBox_Value2", checkBox2.isChecked());
    if (checkBox2.isChecked())
        savePreferences("CheckBox_Value3", checkBox3.isChecked());
    if (checkBox3.isChecked())
        savePreferences("CheckBox_Value4", checkBox4.isChecked());
    if (checkBox4.isChecked())
        savePreferences("CheckBox_Value5", checkBox5.isChecked());
    if (checkBox5.isChecked())
        savePreferences("CheckBox_Value6", checkBox6.isChecked());
    if (checkBox6.isChecked())
        savePreferences("CheckBox_Value7", checkBox7.isChecked());
    if (checkBox7.isChecked())
        savePreferences("storedName", editText.getText().toString());

    finish();
}
}

任何帮助将非常感激！！！

4

1 回答 1

2

保存状态时删除您的 if 语句，否则它只会保存已选中的复选框，我们不希望这样。

// Remove
if (checkBox2.isChecked())
    // Without if statement this will save true if checkbox is checked
    // false if it is not
    savePreferences("CheckBox_Value2", checkBox2.isChecked());

你也可以简化

boolean checkBox7Value = sharedPreferences.getBoolean("CheckBox_Value7", false);
checkBox7.setChecked(checkBox7Value);
于 2017-01-10T16:32:06.473 回答