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().
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将不会从preferences更新
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