问题
I am facing a problem with a clock widget i made. I want the user to touch the clock and launch the clock app on the phone. this is the code:
//this worked on my nexus 2.1
if(VERSION.SDK.equals(\"7\")){
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget);
Intent AlarmClockIntent = new Intent(Intent.ACTION_MAIN).addCategory(Intent.CATEGORY_LAUNCHER).setComponent(new ComponentName(\"com.android.deskclock\", \"com.android.deskclock.DeskClock\"));
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, AlarmClockIntent, 0);
views.setOnClickPendingIntent(R.id.Widget, pendingIntent);
AppWidgetManager.getInstance(context).updateAppWidget(intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS), views);
}
//this worked on my nexus +froyo2.2
else if(VERSION.SDK.equals(\"8\")){
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget);
Intent AlarmClockIntent = new Intent(Intent.ACTION_MAIN).addCategory(Intent.CATEGORY_LAUNCHER).setComponent(new ComponentName(\"com.google.android.deskclock\", \"com.android.deskclock.DeskClock\"));
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, AlarmClockIntent, 0);
views.setOnClickPendingIntent(R.id.Widget, pendingIntent);
AppWidgetManager.getInstance(context).updateAppWidget(intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS), views);
}
//this worked on my htc magic with 1.5 and 1.6
else{
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget);
Intent AlarmClockIntent = new Intent(Intent.ACTION_MAIN).addCategory(Intent.CATEGORY_LAUNCHER).setComponent(new ComponentName(\"com.android.alarmclock\", \"com.android.alarmclock.AlarmClock\"));
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, AlarmClockIntent, 0);
views.setOnClickPendingIntent(R.id.Widget, pendingIntent);
AppWidgetManager.getInstance(context).updateAppWidget(intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS), views);
}
I made the above so the when i touch the clock opens the alarm settings. But is not universal. I found out that on droids with 2.2 does not work. There must be a better solution than creating an if statement for every android phone flavor i the world. Plus i don not know the package names for all. Anyone knows how to overcome this please help.
回答1:
This code works for my clock widget.
PackageManager packageManager = context.getPackageManager();
Intent alarmClockIntent = new Intent(Intent.ACTION_MAIN).addCategory(Intent.CATEGORY_LAUNCHER);
// Verify clock implementation
String clockImpls[][] = {
{"HTC Alarm Clock", "com.htc.android.worldclock", "com.htc.android.worldclock.WorldClockTabControl" },
{"Standar Alarm Clock", "com.android.deskclock", "com.android.deskclock.AlarmClock"},
{"Froyo Nexus Alarm Clock", "com.google.android.deskclock", "com.android.deskclock.DeskClock"},
{"Moto Blur Alarm Clock", "com.motorola.blur.alarmclock", "com.motorola.blur.alarmclock.AlarmClock"},
{"Samsung Galaxy Clock", "com.sec.android.app.clockpackage","com.sec.android.app.clockpackage.ClockPackage"} ,
{"Sony Ericsson Xperia Z", "com.sonyericsson.organizer", "com.sonyericsson.organizer.Organizer_WorldClock" },
{"ASUS Tablets", "com.asus.deskclock", "com.asus.deskclock.DeskClock"}
};
boolean foundClockImpl = false;
for(int i=0; i<clockImpls.length; i++) {
String vendor = clockImpls[i][0];
String packageName = clockImpls[i][1];
String className = clockImpls[i][2];
try {
ComponentName cn = new ComponentName(packageName, className);
ActivityInfo aInfo = packageManager.getActivityInfo(cn, PackageManager.GET_META_DATA);
alarmClockIntent.setComponent(cn);
debug("Found " + vendor + " --> " + packageName + "/" + className);
foundClockImpl = true;
} catch (NameNotFoundException e) {
debug(vendor + " does not exists");
}
}
if (foundClockImpl) {
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, alarmClockIntent, 0);
// add pending intent to your component
// ....
}
In this way, I can run a default clock manager.
回答2:
To follow up to Mayra's answer, the class android.provider.AlarmClock has the proper Intent for this, but it is available only at API level 9 and above. (At least someone at Google listens to requests like this!)
To launch the clock app from your widget the following code works:
Intent openClockIntent = new Intent(AlarmClock.ACTION_SET_ALARM);
openClockIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(openClockIntent);
You also need this permission:<uses-permission android:name="com.android.alarm.permission.SET_ALARM"/>
回答3:
The correct way to start an activity outside of your application is to use a Implicit intent. With an implicit intent you do not provide a specific class to start, instead you specify an action that other apps can choose to act upon.
This is to prevent breakage in your app when the creator of the other app decides to rename their class, or some such. Also, it allows multiple apps to respond to the same action.
See intents and intent filters for more details on implicit intents.
Unfortunately, you need to app developers to agree to all implement a particular action in order for this to work. If the clock apps don't have this, then there is no good way to accomplish what you want.
I would suggest against trying to create a huge if statement like you have, since the app could be different not only with different sdk versions, but with different phones since the phone manufacturers can choose to replace apps. Thus, your app is going to be constantly breaking on new phones, if you rely on being able to open the clock app.
回答4:
From api level 19 you can use this to show the alarm list on the default clock app:
Intent mClockIntent = new Intent(AlarmClock.ACTION_SHOW_ALARMS);
mClockIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(mClockIntent);
回答5:
@Mayra is right. That is the way. However the native clock application does not have a registered intent and is not using an intent filter. I don't think there is a native application, other than the system preferences, that opens it.
Also the native clock application is not available in the same form, or not even available at all, on different phones. This is even beyond the SDK versioning. So there really is no (good) way for you to switch on either.
Your best way out is to submit a patch on source.android.com that gives the clock application an intent filter and then register the intent on http://www.openintents.org/en/intentstable. At least then your app works on a subset of devices and fails cleanly on others (saying no such application can be found to handle the intent).
回答6:
Small addition for frusso answer. To launch Alarm Clock on Google Galaxy Nexus phones:
{"Standar Alarm Clock2", "com.google.android.deskclock", "com.android.deskclock.AlarmClock"},
in other cases will be launched Clock application instead of Alarm Clock
回答7:
Code:
Intent i = new Intent(AlarmClock.ACTION_SET_ALARM);
i.putExtra(AlarmClock.EXTRA_MESSAGE, "Alarm Title");
ArrayList<Integer> alarmDays = new ArrayList<>();
alarmDays.add(Calendar.SATURDAY);
alarmDays.add(Calendar.SUNDAY);
alarmDays.add(Calendar.MONDAY);
alarmDays.add(Calendar.TUESDAY);
alarmDays.add(Calendar.WEDNESDAY);
alarmDays.add(Calendar.THURSDAY);
alarmDays.add(Calendar.FRIDAY);
i.putExtra(AlarmClock.EXTRA_DAYS, alarmDays);
i.putExtra(AlarmClock.EXTRA_VIBRATE, true);
i.putExtra(AlarmClock.EXTRA_HOUR, 10);
i.putExtra(AlarmClock.EXTRA_MINUTES, 21);
startActivity(i);
Permission:
<uses-permission android:name="com.android.alarm.permission.SET_ALARM" />
回答8:
You can add
{ "Sony Ericsson Xperia Z", "com.sonyericsson.organizer", "com.sonyericsson.organizer.Organizer_WorldClock" }
to frusso answer to support new Xperia phones.
来源：https://stackoverflow.com/questions/3590955/intent-to-launch-the-clock-application-on-android