android 9.0系统定时关机的实现

1.简述

由于9.0版本对系统安全性要求越来越严格，所以开关机的api对于应用层都不能调用了，要实现定时关机必须是系统应用要在Androidmanifest.xml 中添加 android:sharedUserId=“android.uid.system”

2.代码部分

import android.annotation.SuppressLint;
import android.content.Context;
import android.support.v7.preference.Preference;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TimePicker;
import android.widget.Toast;
import com.android.tv.settings.R;
import java.util.Calendar;
import java.util.TimeZone;
import android.widget.TextView;
import android.support.v4.content.res.TypedArrayUtils;
import android.support.v7.preference.PreferenceViewHolder;
import android.content.Intent;
import android.app.Instrumentation;
import android.view.KeyEvent;
import android.widget.DatePicker;
import android.content.SharedPreferences;
import android.support.v7.preference.PreferenceManager;
import android.text.format.Time;
import java.util.Date;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Intent;
import java.text.SimpleDateFormat;
import com.android.tv.settings.system.AlarmBroadcastReciver;public class PreferenceWithPowerOff extends Preference {private static final String TAG = "PreferenceWithPowerOff";private TimePicker mTimepicker;private DatePicker mDatePicker;private Button btn;private Context mContext;private int mHour;private int Minute,mYear,Month,mDay;private Calendar calendar;private AlarmManager alarmManager;public PreferenceWithPowerOff(Context context, AttributeSet attrs, int defStyleAttr) {this(context, attrs, defStyleAttr, 0);}public PreferenceWithPowerOff(Context context, AttributeSet attrs) {this(context, attrs, TypedArrayUtils.getAttr(context, R.attr.dialogPreferenceStyle,android.R.attr.dialogPreferenceStyle));}public PreferenceWithPowerOff(Context context) {this(context,null);}public PreferenceWithPowerOff(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {super(context, attrs, defStyleAttr,defStyleRes);this.mContext=context;alarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE);}@Overridepublic void onBindViewHolder(PreferenceViewHolder holder) {super.onBindViewHolder(holder);TextView txt = (TextView) holder.itemView.findViewById(R.id.title_txt);txt.setText(mContext.getResources().getString(R.string.setting_power_off));mDatePicker = (DatePicker)holder.itemView.findViewById(R.id.datetimepicker);mTimepicker = (TimePicker) holder.itemView.findViewById(R.id.timepicker);mTimepicker.setDescendantFocusability(TimePicker.FOCUS_BLOCK_DESCENDANTS);mTimepicker.setIs24HourView(true);getCurData();btn = (Button)holder.itemView.findViewById(R.id.power_on_btn);btn.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {if(!isLaterCurrentTime()) {Toast.makeText(mContext, "关机时间必须比当前时间晚1分钟....", Toast.LENGTH_SHORT).show();return;}String houroftime =mHour<10? "0"+mHour:""+mHour;String hourofminute =Minute<10? "0"+Minute:""+Minute;try {SharedPreferences prefs =mContext.getSharedPreferences("data",Context.MODE_PRIVATE);SharedPreferences.Editor editor =prefs.edit();editor.putString("set_poweroff",mYear+"-"+Month+"-"+mDay+" "+houroftime+":"+hourofminute+":00");editor.putBoolean("is_poweroff",true);boolean result = editor.commit();//实现定时关机的关机代码如下SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");Date date = simpleDateFormat.parse(mYear+"-"+Month+"-"+mDay+"  "+houroftime+":"+hourofminute);Intent intent = new Intent(mContext,AlarmBroadcastReciver.class);//是否显示关机提示dialog，true显示false不显示直接关机//intent.putExtra("android.intent.extra.KEY_CONFIRM", true);//intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);PendingIntent pi = PendingIntent.getBroadcast(mContext, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);//Log.e("PreferenceWithPower","date:"+mYear+"-"+Month+"-"+mDay+"  "+houroftime+":"+hourofminute+"---result:"+result+"----timer:"+date.getTime());alarmManager.set(AlarmManager.RTC_WAKEUP, date.getTime(), pi);//设定时间启动定时器,new Thread(new Runnable() {@Overridepublic void run() {new Instrumentation().sendKeyDownUpSync(KeyEvent.KEYCODE_BACK);}}).start();} catch (Exception e) {e.printStackTrace();}}});}private void getCurData(){calendar = Calendar.getInstance();calendar.setTimeZone(TimeZone.getTimeZone("GMT+8:00"));mYear=calendar.get(Calendar.YEAR);Month=calendar.get(Calendar.MONTH)+1;mDay=calendar.get(Calendar.DAY_OF_MONTH);mDatePicker.init(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), new DatePicker.OnDateChangedListener() {@Overridepublic void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {// Log.e(TAG,"year:"+year+"--monthOfYear:"+monthOfYear+"---dayOfMonth:"+dayOfMonth);mYear=year;Month = monthOfYear+1;mDay = dayOfMonth;}});mHour = calendar.get(Calendar.HOUR_OF_DAY);Minute=calendar.get(Calendar.MINUTE);mTimepicker.setHour(calendar.get(Calendar.HOUR_OF_DAY));mTimepicker.setMinute(calendar.get(Calendar.MINUTE));mTimepicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {  //获取当前选择的时间@Overridepublic void onTimeChanged(TimePicker view, int hourOfDay, int minute) {//Log.e(TAG,"hour:"+hourOfDay+"--minute:"+minute);mHour = hourOfDay;Minute =minute;}});}private boolean isLaterCurrentTime(){int year = calendar.get(Calendar.YEAR);int month = calendar.get(Calendar.MONTH)+1;int day = calendar.get(Calendar.DAY_OF_MONTH);int hour = calendar.get(Calendar.HOUR_OF_DAY);int minute = calendar.get(Calendar.MINUTE);Log.e("PreferenceWithPower","off --year :"+year+"---month:"+month +"--day"+day+"--hour :"+hour +"--minute :"+minute);if(year<mYear){return true;}else if(year == mYear){if(month<Month){return true;}else if(month==Month){if(day<mDay){return true;}else if(day==mDay){if(hour<mHour){return true;}else if(hour==mHour){if(minute<=Minute-1){return true;}else{return false;}}else{return false;}}else{return false;}}else{return false;}}else{return false;}}
}

3.AlarmBroadcastReciver.class 广播部分代码

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;
import android.os.Build;
import android.os.IBinder;
import java.lang.reflect.Method;
import java.io.DataOutputStream;
import java.io.IOException;/*** Created by hi on 2016/8/11.*/
public class AlarmBroadcastReciver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {//Toast.makeText(context,"关机啦", Toast.LENGTH_SHORT).show();if (Build.VERSION.SDK_INT > Build.VERSION_CODES.N_MR1) {try {Class<?> serviceManager = Class.forName("android.os.ServiceManager");Method getService = serviceManager.getMethod("getService", String.class);Object remoteService = getService.invoke(null, Context.POWER_SERVICE);Class<?> stub = Class.forName("android.os.IPowerManager$Stub");Method asInterface = stub.getMethod("asInterface", IBinder.class);Object powerManager = asInterface.invoke(null, remoteService);Method shutdown = powerManager.getClass().getDeclaredMethod("shutdown",boolean.class, String.class, boolean.class);shutdown.invoke(powerManager, false, "", true);} catch (Exception e) {//nothing to do}}}
}

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android 9.0系统定时关机的实现

1.简述

2.代码部分

3.AlarmBroadcastReciver.class 广播部分代码

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