Android 通过应用设置系统日期和时间的方法

来源：互联网发布：mmd镜头数据合集下载编辑：程序博客网时间：2024/04/29 14:48
android 2.3
android 4.0
测试可行,不过需要ROOT权限.
import java.io.DataOutputStream;import java.io.File;import java.io.IOException;import java.util.Calendar;import android.os.SystemClock;public class SystemDateTime {static final String TAG = "SystemDateTime"; public static void setDateTime(int year, int month, int day, int hour, int minute) throws IOException, InterruptedException {requestPermission();    Calendar c = Calendar.getInstance();        c.set(Calendar.YEAR, year);        c.set(Calendar.MONTH, month-1);        c.set(Calendar.DAY_OF_MONTH, day);        c.set(Calendar.HOUR_OF_DAY, hour);        c.set(Calendar.MINUTE, minute);                        long when = c.getTimeInMillis();        if (when / 1000 < Integer.MAX_VALUE) {            SystemClock.setCurrentTimeMillis(when);        }        long now = Calendar.getInstance().getTimeInMillis();        //Log.d(TAG, "set tm="+when + ", now tm="+now);        if(now - when > 1000)        throw new IOException("failed to set Date.");         }public static void setDate(int year, int month, int day) throws IOException, InterruptedException {requestPermission();    Calendar c = Calendar.getInstance();        c.set(Calendar.YEAR, year);        c.set(Calendar.MONTH, month);        c.set(Calendar.DAY_OF_MONTH, day);        long when = c.getTimeInMillis();        if (when / 1000 < Integer.MAX_VALUE) {            SystemClock.setCurrentTimeMillis(when);        }        long now = Calendar.getInstance().getTimeInMillis();        //Log.d(TAG, "set tm="+when + ", now tm="+now);        if(now - when > 1000)        throw new IOException("failed to set Date.");}public static void setTime(int hour, int minute) throws IOException, InterruptedException {requestPermission();        Calendar c = Calendar.getInstance();        c.set(Calendar.HOUR_OF_DAY, hour);        c.set(Calendar.MINUTE, minute);        long when = c.getTimeInMillis();if (when / 1000 < Integer.MAX_VALUE) {SystemClock.setCurrentTimeMillis(when);}long now = Calendar.getInstance().getTimeInMillis();        //Log.d(TAG, "set tm="+when + ", now tm="+now);        if(now - when > 1000)        throw new IOException("failed to set Time.");}static void requestPermission() throws InterruptedException, IOException {createSuProcess("chmod 666 /dev/alarm").waitFor();}static Process createSuProcess() throws IOException  {File rootUser = new File("/system/xbin/ru");if(rootUser.exists()) {return Runtime.getRuntime().exec(rootUser.getAbsolutePath());} else {return Runtime.getRuntime().exec("su");}}static Process createSuProcess(String cmd) throws IOException {DataOutputStream os = null;Process process = createSuProcess();try {os = new DataOutputStream(process.getOutputStream());os.writeBytes(cmd + "\n");os.writeBytes("exit $?\n");} finally {if(os != null) {try {os.close();} catch (IOException e) {}}}return process;}}
6 1