共享首选项未更新

Question

我有一个主要活动是创建共享偏好并每小时为其分配一个值。那里的共享首选项被创建，并被传递到一个列表视图，该列表视图使用适配器类来填充并从相同的共享首选项中提取值在第二个活动中，用于检索的代码被写入简历中，以便它可以按下返回时显示更新的数字。看起来像这样，onlisttem 单击侦听器将控件转发到此活动，该活动假设添加或减去值并更新共享首选项，我在 onpause 和 onBackPressed 中对其进行更新，因为我认为放入 onClickListener 太多了，这是 Last counter 活动的代码。问题是共享首选项没有更新。

ImageButton add,sub,push;
TextView countkeeper, countpusher;
String []hours={"8:30 - 9:30","9:30 - 10:30","10:30 - 11:30","11:30 - 12:30","12:30 - 1:30","1:30 - 2:30","2:30 - 3:30","3:30 - 4:30","4:30 - 5:30"};
int lip,c,target;
Intent i;
SharedPreferences sp,sp1;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_counter);

    if (savedInstanceState == null) {
        getSupportFragmentManager().beginTransaction()
                .add(R.id.container, new PlaceholderFragment()).commit();
    }

    add=(ImageButton)findViewById(R.id.imageButton1);
    sub=(ImageButton)findViewById(R.id.imageButton2);
    push=(ImageButton)findViewById(R.id.imageButton3);
    countkeeper=(TextView)findViewById(R.id.countkeeper);
    countpusher=(TextView)findViewById(R.id.countpusher);

    sp= getSharedPreferences("Count", MODE_APPEND);
    Log.d("CurrentCountFor"+hours[lip],""+sp.getInt("CurrentCountFor"+hours[lip], 10));
    c=sp.getInt("CurrentCountFor"+hours[lip], 10);
    target=sp.getInt("TargetFor"+hours[lip], 10);



    i=getIntent();
    lip= i.getIntExtra("lip", 0);


    add.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub

            c = c+1;
            countkeeper.setText("Count for "+hours[lip]+" is "+c+"/"+target);



        }
    });

    sub.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            c=c-1;
            countkeeper.setText("Count for "+hours[lip]+" is "+c+"/"+target);


        }
    });
}

@Override
public void onBackPressed() {
    super.onBackPressed();
    sp1= getSharedPreferences("Count", MODE_APPEND);
    SharedPreferences.Editor edit=sp1.edit();
    edit.putInt("CurrentCountFor"+hours[lip], c);
    sp1.edit().commit();

};

@Override
protected void onPause() {
    super.onPause();
    sp1= getSharedPreferences("Count", MODE_APPEND);
    SharedPreferences.Editor edit=sp1.edit();
    edit.putInt("CurrentCountFor"+hours[lip], c);
    sp1.edit().commit();


};

请帮助任何人。

Answer 1

将sp1.edit().commit(); 替换为edit.commit();

你有两次同样的问题。