共享首选项不保存，仅保存默认值

Question

我在 android studio 中编写一个 android 应用程序。我的配置文件视图类扩展了允许用户更改其名称和说明的activity_profile_view.xml活动。但是每次调用 onCreate 或 onResume 方法时，都会显示默认值。不会显示任何应该保存在 onClick 或 onPause 中的值。谢谢，这是我的第一篇文章。

public class ProfileView extends Activity implements View.OnClickListener{
public EditText NameEdit, AboutEdit;
public Button SaveButton;
public ImageButton NewPic;
public static final String Profile_Prefs = "Pro_File";
public static SharedPreferences profile;
@Override
protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_profile_view);
   NameEdit = (EditText) findViewById(R.id.NameEdit);
   AboutEdit = (EditText) findViewById(R.id.AboutEdit);
   SaveButton = (Button) findViewById(R.id.SaveButton);
   SaveButton.setOnClickListener(this);
  //Restore Preferences
   profile = this.getSharedPreferences(Profile_Prefs, 0);
   AboutEdit.setText(profile.getString("about", "About Me"));
   NameEdit.setText(profile.getString("name","name"));
}
 @Override
public void onClick(View v) {
            SharedPreferences profile = getSharedPreferences(Profile_Prefs, 0);
            SharedPreferences.Editor editor = profile.edit();
            editor.putString(NameEdit.toString(),"name");
            editor.putString(AboutEdit.toString(),"about");
            editor.apply();
            Intent mainIntent = new Intent(this, Main.class);
            startActivity(mainIntent);
};
@Override
protected void onPause(){
    super.onPause();
    SharedPreferences profile = getSharedPreferences(Profile_Prefs, 0);
    SharedPreferences.Editor editor = profile.edit();
    editor.putString(NameEdit.toString(),"name");
    editor.putString(AboutEdit.toString(),"about");
    editor.commit();
}
@Override()
protected void onResume(){
    super.onResume();
    profile = this.getSharedPreferences(Profile_Prefs, 0);
    AboutEdit.setText(profile.getString("about", "About Me"));
    NameEdit.setText(profile.getString("name","name"));
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.profile_view, menu);
    return true;
}

修复 onClick 和 onPause 后，当调用 onResume 或 onCreate 时，我在应用程序的编辑文本字段中得到休耕。

android.widget.EditText{1a0ea60cVFED..中联...32,263736,426#7f0a0003 app：id/NameEdit} android.widget.EditText{651555eVFED..CL....92456-676,796#7f0a0009 app：id/AboutEdit}

Answer 1

我认为在OnClick()方法中您需要更改它：

@Override
public void onClick(View v) {
        SharedPreferences profile = getSharedPreferences(Profile_Prefs, 0);
        SharedPreferences.Editor editor = profile.edit();
        editor.putString(NameEdit.toString(),"name");
        editor.putString(AboutEdit.toString(),"about");
        editor.apply();
        Intent mainIntent = new Intent(this, Main.class);
        startActivity(mainIntent);
};

有了这个：

@Override
public void onClick(View v) {
        SharedPreferences profile = getSharedPreferences(Profile_Prefs, 0);
        SharedPreferences.Editor editor = profile.edit();
        editor.putString("name",NameEdit.getText().toString()); //HERE I THINK YOU INVERTED KEY,VALUE ORDER, THIS IS THE CORRECT WAY
        editor.putString("about",AboutEdit.getText().toString()); //INVERTED KEY,VALUE ORDER HERE TOO
        editor.apply();
        Intent mainIntent = new Intent(this, Main.class);
        startActivity(mainIntent);
};

希望这有帮助

编辑：我没有注意到，但你在onPause（）方法中有相同的：

@Override
protected void onPause(){
    super.onPause();
    SharedPreferences profile = getSharedPreferences(Profile_Prefs, 0);
    SharedPreferences.Editor editor = profile.edit();
    editor.putString("name",NameEdit.getText().toString()); //I THINK THIS IS THE CORRECT WAY
    editor.putString("about",AboutEdit.getText().toString()); //I THINK THIS IS THE CORRECT WAY
    editor.commit();
}