Android - 显示具有 sharedpreference 值的按钮

Question

我目前正在使用一个 Activity 来保存来自 Button1...button8 的文本。

但它不显示按钮的文字。我不明白。

主要 Activity =>

public void getName(){
    SharedPreferences preferences = getSharedPreferences("sample",0);
    int a=(preferences.getInt("num",0));
    String ab=(preferences.getString("Name",""));
    if(a==0){
        button1.setVisibility(View.GONE);
        button1.setVisibility(View.VISIBLE);
        button1.setText(ab);
    }
    if(a==1){
        button2.setVisibility(View.GONE);
        button2.setVisibility(View.VISIBLE);
        button2.setText(ab);
    }
    if(a==3){
        button3.setVisibility(View.GONE);
        button3.setVisibility(View.VISIBLE);
        button3.setText(ab);
    }
}

设置 Activity =>

public void onClick(View v) {
    SharedPreferences preferences = getSharedPreferences("Sample", 0);
    SharedPreferences.Editor editor = preferences.edit();
    editor.putString("Name", editText.getText().toString());
    editor.putInt("num", myNum);
    editor.commit();
    Intent intent = new Intent(Setup.this, MainActivity.class);
    startActivity(intent);
}

Answer 1

检查您的偏好名称，您正在使用

getSharedPreferences("Sample", 0);

和

getSharedPreferences("sample",0);