java - 以编程方式设置 Android 的日期/时间

Question

我需要以编程方式从 Android 设置日期/时间，但我没有成功!我上面有这三个来源:

源代码1

AlarmManager alarm = (AlarmManager) getSystemService(ALARM_SERVICE);  
alarm.setTime(1330082817000); 

AndroidManifest:

<uses-permission android:name="android.permission.SET_TIME" />  
<uses-permission android:name="android.permission.SET_TIME_ZONE" />  

异常(exception):

Service fatal error : Unable to start activity ComponentInfo{br.com.tdta.service/br.com.tdta.service.Service}: java.lang.SecurityException: setTime: Neither user 10038 nor current process has android.permission.SET_TIME.  
java.lang.RuntimeException: Unable to start activity ComponentInfo{br.com.tdta.service/br.com.tdta.service.Service}: java.lang.SecurityException: setTime: Neither user 10038 nor current process has android.permission.SET_TIME.  
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)  
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)  
    at android.app.ActivityThread.access$2300(ActivityThread.java:125)  
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)  
    at android.os.Handler.dispatchMessage(Handler.java:99)  
    at android.os.Looper.loop(Looper.java:123)  
    at android.app.ActivityThread.main(ActivityThread.java:4627)  
    at java.lang.reflect.Method.invokeNative(Native Method)  
    at java.lang.reflect.Method.invoke(Method.java:521)  
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)  
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)  
    at dalvik.system.NativeStart.main(Native Method)  
Caused by: java.lang.SecurityException: setTime: Neither user 10038 nor current process has android.permission.SET_TIME.  
    at android.os.Parcel.readException(Parcel.java:1247)  
    at android.os.Parcel.readException(Parcel.java:1235)  
    at android.app.IAlarmManager$Stub$Proxy.setTime(IAlarmManager.java:237)  
    at android.app.AlarmManager.setTime(AlarmManager.java:289)  
    at br.com.tdta.service.Service.onCreate(Service.java:32)  
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)  
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)  
... 11 more  

====

源代码2

boolean itsWork = SystemClock.setCurrentTimeMillis(1330082817000);  
System.out.println(itsWork);  

list :

<uses-permission android:name="android.permission.SET_TIME" />  
<uses-permission android:name="android.permission.SET_TIME_ZONE" />  

其工作值:

false  

====

源代码3

SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd.hhmmss");
String data = format.format(new Date(1330082817000));
try {
    Runtime.getRuntime().exec("date -s " + data);
} catch (IOException e) {
}

我做错了什么？

提前致谢!

Answer 1

用户应用程序无权更改设备时间。请阅读 following post 中 cashbash 的答案备用选项。

复制到这里以供快速引用:

根据this thread ，用户应用程序无法设置时间，无论我们赋予它什么权限。相反，最好的方法是让用户手动设置时间。我们将使用:

startActivity(new Intent(android.provider.Settings.ACTION_DATE_SETTINGS));

不幸的是，无法将它们直接链接到时间设置(这样可以节省更多点击时间)。通过使用ellapsedRealtime，我们可以确保用户正确设置时间。