将不会从preferences更新

本文介绍了将不会从preferences更新的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

它更新的时候我编辑或只需单击preferences屏幕任意输入和比我首先要躲前面的活动确定前的活动。它给了我零按钮和preferences XML我给右键，还设置defaultValue。

所以..场景：我去preferences屏幕上，单击编辑按钮上的文字，只要点击确定，回去后，其0按钮，隐藏前的活动，回到前面的活动，是孤单的正确的价值。

我希望我列入所有必需的部件。

私人共享preferences preFS;    私人字符串移动电话号码;    私有静态最终诠释MENU_ preFERENCES = Menu.FIRST;    私有静态最终诠释SHOW_ preFERENCES = 1;    私人无效updateFrom preferences（）{       移动电话号码= prefs.getString（移动电话号码，0）;    }    私人无效refreshAplication（）{       button.setText（移动电话号码）;    }    @覆盖       公共无效的onCreate（捆绑savedInstanceState）{       super.onCreate（savedInstanceState）;       的setContentView（R.layout.main）;       preFS = preferenceManager.getDefaultShared preferences（本）;       updateFrom preferences（）;       refreshAplication（）;    }    @覆盖    公共布尔onOptionsItemSelected（菜单项项）{      开关（item.getItemId（））{        案例（MENU_ preFERENCES）：{            意图I =新意图（这一点，preferences.class）;            startActivityForResult（I，SHOW_ preFERENCES）;            返回true;        }       }       返回false;    }    @覆盖    公共无效的onActivityResult（INT申请code，INT结果code，意图数据）{      super.onActivityResult（要求code，结果code，数据）;      如果（要求code == SHOW_ preFERENCES）      如果（结果code == Activity.RESULT_OK）{        updateFrom preferences（）;        refreshAplication（）;      }    }    公共类preferences扩展$ P $ {pferenceActivity    @覆盖    公共无效的onCreate（捆绑savedInstanceState）{      super.onCreate（savedInstanceState）;      加preferencesFromResource（R.xml.user preferences）;      }    }

解决方案

呼叫 refreshAplication（）; 在 onResume（）。

It updates front activity when I edit or just click ok on any input in preferences screen and than i must first hide front activity. It gives me zero on button and in preferences xml i gave right key and also defaultValue.

So .. scenario: i go to preferences screen, click to edit button text, just click ok, go back, its "0" on button, hide front activity, go back to front activity and theres is the right value.

I hope i included all necessary parts.

private SharedPreferences prefs; private String mobileNumber; private static final int MENU_PREFERENCES = Menu.FIRST; private static final int SHOW_PREFERENCES = 1; private void updateFromPreferences() { mobileNumber = prefs.getString("mobileNumber", "0"); } private void refreshAplication(){ button.setText(mobileNumber); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); prefs = PreferenceManager.getDefaultSharedPreferences(this); updateFromPreferences(); refreshAplication(); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case (MENU_PREFERENCES): { Intent i = new Intent(this, Preferences.class); startActivityForResult(i, SHOW_PREFERENCES); return true; } } return false; } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == SHOW_PREFERENCES) if (resultCode == Activity.RESULT_OK) { updateFromPreferences(); refreshAplication(); } } public class Preferences extends PreferenceActivity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.userpreferences); } }

解决方案

Call refreshAplication(); in onResume().