我有多个SharedPreferences
,每个都存储一个int
值。我之前已经成功创建了多个SharedPreferences
,但我正在尝试一种稍微不同的方法。我只保留最高的 5 个值。我SharedPreference
从ArrayList
. 我在上面调用反向排序方法,然后我删除最后一个值(因为它是额外的)。然后我将每个索引放入SharedPreferences
. 这是我所拥有的:
prefs1 = this.getSharedPreferences("key1", Context.MODE_PRIVATE);
int value1 = prefs1.getInt("number1", 0);
prefs2 = this.getSharedPreferences("key2", Context.MODE_PRIVATE);
int value2 = prefs2.getInt("number2", 0);
prefs3 = this.getSharedPreferences("key3", Context.MODE_PRIVATE);
int value3 = prefs3.getInt("number3", 0);
prefs4 = this.getSharedPreferences("key4", Context.MODE_PRIVATE);
int value4 = prefs4.getInt("number4", 0);
prefs5 = this.getSharedPreferences("key5", Context.MODE_PRIVATE);
int value5 = prefs5.getInt("number5", 0);
ArrayList<Integer> numList = new ArrayList<Integer>();
Collections.addAll(numList, value0, value1, value2, value3, value4, value5);
Collections.sort(numList, Collections.reverseOrder());
numList.remove(numList.size()-1);
value1 = numList.get(0);
value2 = numList.get(1);
value3 = numList.get(2);
value4 = numList.get(3);
value5 = numList.get(4);
Editor editor = prefs1.edit();
editor.putInt("number1", value1);
editor.commit();
editor = prefs2.edit();
editor.putInt("number2", value2);
editor.commit();
editor = prefs3.edit();
editor.putInt("number3", value3);
editor.commit();
editor = prefs4.edit();
editor.putInt("number4", value4);
editor.commit();
editor = prefs5.edit();
editor.putInt("number5", value5);
editor.commit();
我遇到的问题是,即使在value0
执行完成后为正之后,我的其他活动中的每个值都显示为 0。
我这样做有什么问题吗?(如果不是,那一定是当我在另一项活动中获得这些值时,但我几乎肯定我有这个权利。)
编辑*
也许是在检索中,这里来自检索活动:
prefs1 = this.getSharedPreferences("key1", Context.MODE_PRIVATE);
num1 = prefs1.getInt("number1", 0); //0 is the default value
tv1 = (TextView) findViewById(R.id.val1);
tv1.setText(String.valueOf(num1));
prefs2 = this.getSharedPreferences("key2", Context.MODE_PRIVATE);
num2 = prefs2.getInt("number2", 0); //0 is the default value
tv2 = (TextView) findViewById(R.id.val2);
tv2.setText(String.valueOf(num2));
prefs3 = this.getSharedPreferences("key3", Context.MODE_PRIVATE);
num3 = prefs3.getInt("number3", 0); //0 is the default value
tv3 = (TextView) findViewById(R.id.val3);
tv3.setText(String.valueOf(num3));
prefs4 = this.getSharedPreferences("key4", Context.MODE_PRIVATE);
num4 = prefs4.getInt("number4", 0); //0 is the default value
tv4 = (TextView) findViewById(R.id.val4);
tv4.setText(String.valueOf(num4));
prefs5 = this.getSharedPreferences("key5", Context.MODE_PRIVATE);
num5 = prefs5.getInt("number5", 0); //0 is the default value
tv5 = (TextView) findViewById(R.id.val5);
tv5.setText(String.valueOf(num5));