如何在SherlockFragment中访问共享偏好

Question

我在选项卡中使用sherlock片段,但我无法访问sharedpreference或保存它,我该怎么办？这是我的代码:

 public class SettingsActivity extends SherlockFragment  {

    private CheckBox cb1;
    private Context context = getActivity();
    private SharedPreferences sp;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.settings_layout, container, false);
        cb1 = (CheckBox)rootView.findViewById(R.id.cb1);
        sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
        cb1.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            public void onCheckedChanged (CompoundButton cb, boolean isChecked) {
                if (isChecked) {
                    context.getSharedPreferences("some_pref", Context.MODE_PRIVATE)
                    .edit()
                    .putBoolean("some_bool_name", true)
                    .commit();
                }
            }
        });
        return rootView;
    }
}

如果上述方法不正确,请告诉我如何保存首选项.

logcat的

11-13 18:13:36.907:I/ActivityManager(10626):START u0 {act = android.intent.action.MAIN cat = [android.intent.category.LAUNCHER] flg = 0x10200000 cmp = com.myapp.test/.painActivity}来自pid 10836 11-13 18:13:36.907:D/ActivityManager(10626):TopActivityInfo,pkgName:com.myapp.test activityName:com.myapp.test.MainActivity bstSpecialAppKeyboardHandlingEnabled = false 11-13 18:13: 36.907:D/GuidanceScreen(10824):appName:My App,currentPkg:com.myapp.test,event:app_launch,controller:Keyboard 11-13 18:13:36.907:D/ActivityManager(10626):显示pkgName的指南: com.myapp.test 11-13 18:13:36.917:D/GuidanceScreen(10824):appName:My App 11-13 18:13:36.987:D/GuidanceScreen(10824):com.myapp.test没有指导.11-13 18:13:37.037:D/WindowManager(10626):使用数据发送appClickStats请求:[package = com.myapp.test,appname = My App,appver = 1.0,clickloc = system_server] 11-13 18:13 :37.237:I/ActivityManager(10626):显示com.myapp.test/.MainActivity:+ 260ms 11-13 18:13:46.227:D/AndroidRuntime(15464):来自cmdline的procName:com.myapp.test 11-13 18:13:46.227:E/AndroidRuntime(15464):在writeCrashedAppName中,pkgName:com.myapp.test 11-13 18:13:46.227:D/AndroidRuntime(15464):使用内容成功编写的文件:com.myapp.test StringBuffer:; com.myapp.test 11-13 18:13:46.237:E/AndroidRuntime(15464):进程:com.myapp.test,PID:15464 11-13 18:13:46.237:E/AndroidRuntime(15464) :at com.myapp.test.SettingsActivity.onCreateView(SettingsActivity.java:40)11-13 18:13:46.267:I/ActivityManager(10626):进程com.myapp.test(pid 15464)已经死亡.11-13 18:13:46.267:W/ActivityManager(10626):强制删除ActivityRecord {4b12da0c u0 com.myapp.test/.MainActivity t17}:app死了,没有保存状态11-13 18:13:46.287:I/WindowState(10626):WIN DEATH:Window {4b1ac890 u0 com.myapp.test/com.myapp.test.MainActivity}

Answer 1

初始化共享首选项：

private SharedPreferences loginPreferences;
private SharedPreferences.Editor loginPrefsEditor;

onCreateView() 内部：

loginPreferences = getActivity().getSharedPreferences("loginPrefs", getActivity().MODE_PRIVATE);
loginPrefsEditor = loginPreferences.edit();

节省：

loginPrefsEditor.putString("start_time", yourText);
loginPrefsEditor.commit();

取回：

String dateString = loginPreferences.getString("start_time", "");