Android 共享首选项是否在重新启动后返回最后一个值？

我使用共享首选项来存储动态创建的按钮，还使用它来存储重命名后动态生成的按钮的标签。应用程序在生成按钮之前工作正常，但问题在于标签。如果将三个按钮标记为Test1、Test2、Test3等。但重新启动应用程序后，所有生成的按钮上都有标签Test3。

MainActivity中的code

 SharedPreferences prefs=null;
int count = 0;

"Code in onCreate method"

prefs = PreferenceManager.getDefaultSharedPreferences(this);
    count=prefs.getInt("count", 0);
    LinearLayout ll = (LinearLayout)findViewById(R.id.layout1);
    for(int i=0;i<count;i++)
        {
            LayoutParams lp = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);       
            final Button myButton = new Button(this);
            myButton.setOnClickListener(new OnClickListener() 
                {
                    @Override
                    public void onClick(View v)
                        {
                            reportDialog(myButton.getText().toString());
                        }
                });

            myButton.getId();
            myButton.setText(prefs.getString("key","New"));
            myButton.setOnLongClickListener(new OnLongClickListener() {
                public boolean onLongClick(View arg0)
                    {
                        AlertDialog lbldialog = new AlertDialog.Builder(context).create();
                        lbldialog.setTitle("Change Button Label");
                        lbldialog.setIcon(android.R.drawable.ic_dialog_info);   
                        lbldialog.setMessage("Enter new Button label  to change");
                        final EditText input = new EditText(MainActivity.this);                 
                        lbldialog.setView(input);
                        lbldialog.setButton(DialogInterface.BUTTON_POSITIVE, "Change", new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) 
                                    {
                                        myButton.setText(input.getText());
                                        Editor edit = prefs.edit();
                                        edit.putString("key", myButton.getText().toString());
                                        edit.commit();
                                    }
                            });

                        lbldialog.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", 
                        new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog, int which) 
                                    {
                                        Toast.makeText(getApplicationContext(), "Button Label not Changed",Toast.LENGTH_SHORT).show();
                                        dialog.dismiss();
                                    }
                            });
                        lbldialog.show();   
                return true;  
                }
        });
        ll.addView(myButton, lp);
    }

"Code to add new buttons:"

if(v == btnaddnew)  

{    final Button btn1 = new Button(this);
btn1.setText("New");
btn1.setId(23);

btn1.setOnClickListener(new OnClickListener () {
    @Override
    public void onClick(View v){
        rptDialog(btn1.getText().toString());
        }
    })
btn1.setOnLongClickListener(new OnLongClickListener() {
    public boolean onLongClick(View arg0) {
        //Dialog Box pops up with edit text field to change button label
        AlertDialog lbldialog = new AlertDialog.Builder(context).create();
        lbldialog.setTitle("Change Button Label");
        lbldialog.setIcon(android.R.drawable.ic_dialog_info);   
        lbldialog.setMessage("Enter new Button label  to change");
        final EditText input = new EditText(MainActivity.this);
        lbldialog.setView(input);
        lbldialog.setButton(DialogInterface.BUTTON_POSITIVE, "Change",
                    new DialogInterface.OnClickListener() 
            {
                public void onClick(DialogInterface dialog, int which) 
                    {
                        btn1.setText(input.getText());
                        Editor edit = prefs.edit();
                        edit.putString("key", btn1.getText().toString());
                        edit.commit();

                    }
            });

        lbldialog.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", 
                    new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    Toast.makeText(getApplicationContext(), "Button Label not Changed",Toast.LENGTH_SHORT).show();
                    dialog.dismiss();
                    }
                });
        lbldialog.show();   
    return true; 
     }
    });         
    LinearLayout ll = (LinearLayout)findViewById(R.id.layout1);
    LayoutParams lp = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);       
    ll.addView(btn1, lp);
    count++;
    Editor editor = prefs.edit();
    editor.putInt("count", count);
    editor.commit();
    }

SharedReferences prefs=null；
整数计数=0；
“onCreate方法中的代码”
prefs=PreferenceManager.getDefaultSharedPreferences（此）；
count=prefs.getInt（“count”，0）；
LinearLayout ll=（LinearLayout）findViewById（R.id.layout1）；
对于（int i=0；i您对所有按钮使用相同的键：

btn1.setText(input.getText());
Editor edit = prefs.edit();
edit.putString("key", btn1.getText().toString());
edit.commit();

您应该为每一个键创建不同的键，如key1、key2和key3。
作为for循环的内部-（？）

“i”将来自for循环，然后使用相同的字符串“key”保存所有按钮的标签，这样它就会被覆盖。您保存的最后一个标签将保留在SharedReferences中。@Andrew T。您可以建议编辑该“key”吗+n-将第n个按钮作为存储value@user2450263是否需要将“n”声明为整数、布尔值etc@user3172071检查答案。另外，如果您使用“n”，则是一个整数。但也可以使用“i”作为for循环
Editor edit = prefs.edit();
edit.putString("key1", myButton.getText().toString());
edit.commit();

Editor edit = prefs.edit();
edit.putString("key2", btn1.getText().toString());
edit.commit();

Editor edit = prefs.edit();
edit.putString("key1", myButton.getText().toString());
edit.commit();

Editor edit = prefs.edit();
edit.putString("key2", btn1.getText().toString());
edit.commit();