待定意图立即触发
Pending Intent Fires Immediately
我正在尝试制作一个允许用户使用两个 TimePickers 输入两次的应用程序,并且 phone 将在这些时间之间设置为静音。我正在使用 PendingIntent 和 AlarmManager 在用户选择的时间触发 BroadcastReceiver。
目前,当用户单击保存按钮时,它会立即将 phone 设置为静音。然后我的 "alarm scheduled" toast 出现了,我的 "broadcast received" 出现了两次,但之后它什么也没做。
这是我的主要 activity 代码:
public class MainActivity extends AppCompatActivity {
AlarmManager alarm;
TimePicker timePickerStart;
TimePicker timePickerEnd;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
timePickerStart = (TimePicker)findViewById(R.id.timePickerStart);
timePickerStart.setIs24HourView(true);
timePickerEnd = (TimePicker)findViewById(R.id.timePickerEnd);
timePickerEnd.setIs24HourView(true);
}
//method is called when save button is clicked
public void setAlarm(View view) {
Calendar calendarStart;
Calendar calendarEnd;
calendarStart = Calendar.getInstance();
calendarEnd = Calendar.getInstance();
//Set calendars to the times in both TimePickers
calendarStart.set(Calendar.YEAR, Calendar.MONTH, Calendar.DAY_OF_MONTH, timePickerStart.getCurrentHour(), timePickerStart.getCurrentMinute());
long startTimeMillis = calendarStart.getTimeInMillis();
calendarEnd.set(Calendar.YEAR, Calendar.MONTH, Calendar.DAY_OF_MONTH, timePickerEnd.getCurrentHour(), timePickerEnd.getCurrentMinute());
long endTimeMillis = calendarEnd.getTimeInMillis();
//create an intent and set the class that will be triggered by the intent
Intent intent = new Intent(MainActivity.this, Receiver.class);
PendingIntent pIntent = null;
pIntent = PendingIntent.getBroadcast(this, 123, intent, PendingIntent.FLAG_UPDATE_CURRENT);
//create alarm manager
alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
//set alarms to go off at the time specified by the timePickers
alarm.set(AlarmManager.RTC_WAKEUP, calendarStart.getTimeInMillis(), pIntent);
alarm.set(AlarmManager.RTC_WAKEUP, calendarEnd.getTimeInMillis(), pIntent);
//Toast for feedback
Toast.makeText(this, "Alarm Scheduled", Toast.LENGTH_SHORT).show();
}
这是我的 BroadcastReceiver:
public class Receiver extends BroadcastReceiver {
AudioManager audioManager;
int modeNum;
@Override
public void onReceive(Context context, Intent intent) {
//toast for feedback
Toast.makeText(context, "Broadcast Received", Toast.LENGTH_SHORT).show();
audioManager = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE);
modeNum = audioManager.getRingerMode();
if (modeNum == 0) {
audioManager.setRingerMode(2);
} else {
audioManager.setRingerMode(0);
}
}
}
这是我的清单:
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".Receiver"></receiver>
</application>
您有多个问题。
首先,您正尝试创建两个具有相同 PendingIntent
的闹钟。这是行不通的。您的第二个报警请求将取消第一个。您需要 distinct PendingIntent
个对象,这意味着要么 Intent
个对象被 PendingIntent
个对象包裹,要么使用两个不同的值 [= =14=].
其次,您对 Calendar
的 set()
调用不正确。例如,在这两个地方,您的第一个参数都应该是年份。您传递的是 Calendar.YEAR
,即 1
,而不是 2015
。
我正在尝试制作一个允许用户使用两个 TimePickers 输入两次的应用程序,并且 phone 将在这些时间之间设置为静音。我正在使用 PendingIntent 和 AlarmManager 在用户选择的时间触发 BroadcastReceiver。 目前,当用户单击保存按钮时,它会立即将 phone 设置为静音。然后我的 "alarm scheduled" toast 出现了,我的 "broadcast received" 出现了两次,但之后它什么也没做。
这是我的主要 activity 代码:
public class MainActivity extends AppCompatActivity {
AlarmManager alarm;
TimePicker timePickerStart;
TimePicker timePickerEnd;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
timePickerStart = (TimePicker)findViewById(R.id.timePickerStart);
timePickerStart.setIs24HourView(true);
timePickerEnd = (TimePicker)findViewById(R.id.timePickerEnd);
timePickerEnd.setIs24HourView(true);
}
//method is called when save button is clicked
public void setAlarm(View view) {
Calendar calendarStart;
Calendar calendarEnd;
calendarStart = Calendar.getInstance();
calendarEnd = Calendar.getInstance();
//Set calendars to the times in both TimePickers
calendarStart.set(Calendar.YEAR, Calendar.MONTH, Calendar.DAY_OF_MONTH, timePickerStart.getCurrentHour(), timePickerStart.getCurrentMinute());
long startTimeMillis = calendarStart.getTimeInMillis();
calendarEnd.set(Calendar.YEAR, Calendar.MONTH, Calendar.DAY_OF_MONTH, timePickerEnd.getCurrentHour(), timePickerEnd.getCurrentMinute());
long endTimeMillis = calendarEnd.getTimeInMillis();
//create an intent and set the class that will be triggered by the intent
Intent intent = new Intent(MainActivity.this, Receiver.class);
PendingIntent pIntent = null;
pIntent = PendingIntent.getBroadcast(this, 123, intent, PendingIntent.FLAG_UPDATE_CURRENT);
//create alarm manager
alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
//set alarms to go off at the time specified by the timePickers
alarm.set(AlarmManager.RTC_WAKEUP, calendarStart.getTimeInMillis(), pIntent);
alarm.set(AlarmManager.RTC_WAKEUP, calendarEnd.getTimeInMillis(), pIntent);
//Toast for feedback
Toast.makeText(this, "Alarm Scheduled", Toast.LENGTH_SHORT).show();
}
这是我的 BroadcastReceiver:
public class Receiver extends BroadcastReceiver {
AudioManager audioManager;
int modeNum;
@Override
public void onReceive(Context context, Intent intent) {
//toast for feedback
Toast.makeText(context, "Broadcast Received", Toast.LENGTH_SHORT).show();
audioManager = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE);
modeNum = audioManager.getRingerMode();
if (modeNum == 0) {
audioManager.setRingerMode(2);
} else {
audioManager.setRingerMode(0);
}
}
}
这是我的清单:
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".Receiver"></receiver>
</application>
您有多个问题。
首先,您正尝试创建两个具有相同 PendingIntent
的闹钟。这是行不通的。您的第二个报警请求将取消第一个。您需要 distinct PendingIntent
个对象,这意味着要么 Intent
个对象被 PendingIntent
个对象包裹,要么使用两个不同的值 [= =14=].
其次,您对 Calendar
的 set()
调用不正确。例如,在这两个地方,您的第一个参数都应该是年份。您传递的是 Calendar.YEAR
,即 1
,而不是 2015
。