TimePicker Preference实现

最新推荐文章于 2021-05-28 04:35:29 发布

最新推荐文章于 2021-05-28 04:35:29 发布 · 189 阅读

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本文介绍了一个名为 PrefAutoRefreshStartTime 的 Java 类，该类用于设置自动刷新开始时间的偏好设置，并实现 TimePicker.OnTimeChangedListener 接口来监听时间变化。文章详细展示了类的实现细节，包括初始化方法、对话框视图创建、时间更改监听等功能。

public class PrefAutoRefreshStartTime extends DialogPreference implements TimePicker.OnTimeChangedListener {

/** * The validation expression for this preference */

private static final String VALIDATION_EXPRESSION = "[0-2]*[0-9]:[0-5]*[0-9]";

/** * The default value for this preference */

private String defaultValue;

/** * @param context * @param attrs */

public PrefAutoRefreshStartTime(Context context, AttributeSet attrs) { super(context, attrs); initialize(context); } /** * @param context * @param attrs * @param defStyle */ public PrefAutoRefreshStartTime(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); initialize(context); } /** * Initialize this preference */ private void initialize(Context context) { setPersistent(true); SharedPreferences sp = getPreferenceManager().getDefaultSharedPreferences(getContext()); String timeTemp = sp.getString(IConfigsParameters.KEY_P_AUTOFRESH_START, ""); if(null != timeTemp){ setSummary(packageTimeInfo(timeTemp)); }else{ setSummary(packageTimeInfo(context.getText(R.string.time_default_auto_update_start).toString())); } } /* * (non-Javadoc) * * @see android.preference.DialogPreference#onCreateDialogView() */ @Override protected View onCreateDialogView() { TimePicker tp = new TimePicker(getContext()); tp.setOnTimeChangedListener(this); /** */ SharedPreferences sp = getPreferenceManager().getDefaultSharedPreferences(getContext()); String timeTemp = sp.getString("p_autofresh_strart", ""); String[] time = timeTemp.split(":"); if((time != null) && (time.length == 2)){ Integer hour = Integer.decode(time[0]); Integer min = Integer.decode(time[1]); tp.setCurrentHour(hour); tp.setCurrentMinute(min); }else{ /** */ int h = getHour(); int m = getMinute(); if (h >= 0 && m >= 0) { tp.setCurrentHour(h); tp.setCurrentMinute(m); } } return tp; } /* * (non-Javadoc) * * @see * android.widget.TimePicker.OnTimeChangedListener#onTimeChanged(android * .widget.TimePicker, int, int) */ @Override public void onTimeChanged(TimePicker view, int hour, int minute) { setSummary(packageTimeInfo((""+hour+":"+minute))); persistString(hour + ":" + minute); } /* * (non-Javadoc) * * @see android.preference.Preference#setDefaultValue(java.lang.Object) */ @Override public void setDefaultValue(Object defaultValue) { // BUG this method is never called if you use the 'android:defaultValue' // attribute in your XML preference file, not sure why it isn't super.setDefaultValue(defaultValue); if (!(defaultValue instanceof String)) { return; } if (!((String) defaultValue).matches(VALIDATION_EXPRESSION)) { return; } this.defaultValue = (String) defaultValue; } /** * Get the hour value (in 24 hour time) * * @return The hour value, will be 0 to 23 (inclusive) */ private int getHour() { String time = getPersistedString(this.defaultValue); if (time == null || !time.matches(VALIDATION_EXPRESSION)) { return -1; } return Integer.valueOf(time.split(":")[0]); } /** * Get the minute value * * @return the minute value, will be 0 to 59 (inclusive) */ private int getMinute() { String time = getPersistedString(this.defaultValue); if (time == null || !time.matches(VALIDATION_EXPRESSION)) { return -1; } return Integer.valueOf(time.split(":")[1]); } private String packageTimeInfo(String time){ String[] times = time.split(":"); StringBuffer sb = new StringBuffer(); sb.append(times[0]).append("时"); if(times[1].length() < 2){ sb.append("0"); } sb.append(times[1]).append("分"); return sb.toString(); } }

如何使用？在覆盖相应的方法中写入sharedpreference文件就ok。。。

从我的qq日志复制过来结果这么吐血！！