我"保存"它将返回一个字符串(在我的例子中)"错误": html_value1不是""
MainActivity:
tools.getEditor(tools.getPreferences(getApplicationContext())).putString("wochea9a", html_value1);
tools.getEditor(tools.getPreferences(getApplicationContext())).putString("wocheb9a", html_value2);
tools.getEditor(tools.getPreferences(getApplicationContext())).commit();
Alarmserviceactivity:
savedwochea9a = tools.getPreferences(getApplicationContext()).getString("wochea9a", "error");
savedwocheb9a = tools.getPreferences(getApplicationContext()).getString("wocheb9a", "error");
工具
public class tools {
static SharedPreferences preferences;
static SharedPreferences.Editor editor;
public static SharedPreferences getPreferences(Context context){
preferences = PreferenceManager.getDefaultSharedPreferences(context);
return preferences;
}
public static SharedPreferences.Editor getEditor(SharedPreferences preferences){
editor = preferences.edit();
return editor;
}
...
我该如何解决这个问题?
答案 0 :(得分:3)
每次创建编辑器(使用edit()
)时,您都必须调用commit()
或apply()
才能保存结果。
因此,您的代码应如下所示:
<强> MainActivity:强>
tools.getEditor(tools.getPreferences(getApplicationContext()))
.putString("wochea9a", html_value1)
.putString("wocheb9a", html_value2)
.commit(); // or .apply();
如果使用apply()
,情况会更好。此方法立即返回,将数据保存在后台而不会阻塞线程。