使得在引导这个code工作 [英] Making this code work on boot
问题描述
我一直停留在这几个星期，现在......我不能得到这个工作。我所试图做的是我的应用程序，当用户在插入耳机有/耳机插入手机承认，当他们这样做，因为它显示一个通知图标。这是我的课。我已经添加了
I have been stuck on this for weeks now...I can not get this to work. What I am trying to do is for my app to recognize when a user plugs in there earphones/headphones into the phone, and when they do, for it to show a notification icon. Here is my class. I have added the
public class ItudeMobileBroadcastReceiver extends BroadcastReceiver {
int NOTIFICATION_ID = 1234567890;
NotificationManager mNotificationManager;
@Override
public void onReceive(Context context, Intent intent) {
/* Only perform this code if the BroadcastReceiver received the ACTION_BOOT_COMPLETED action.*/
Log.d("Autobooted", "it booted");
Toast laToast = Toast.makeText(context, "I have booted", 5);
laToast.show();
//It boots so it shows that toast. Rest doesn't work though
if (intent.getAction().equals(Intent.ACTION_HEADSET_PLUG)) {
int state = intent.getIntExtra("state", -1);
switch (state) {
case 0:
Log.d("unplugged", "Headset was unplugged");
NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.cancel(NOTIFICATION_ID);
Toast unpluggedToast = Toast.makeText(context, "Headset has been disconnected", Toast.LENGTH_SHORT);
unpluggedToast.show();
break;
case 1:
Log.d("plugged", "Headset is plugged");
mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
showNotification(context, R.drawable.notification_icon, "short", false);
Toast pluggedToast = Toast.makeText(context, "Headset has been connected", Toast.LENGTH_SHORT);
pluggedToast.show();
break;
default:
Log.d("uh", "I have no idea what the headset state is");
Toast defaultToast = Toast.makeText(context, "No headset detected", Toast.LENGTH_SHORT);
defaultToast.show();
}
}
}
private void showNotification(Context context, int statusBarIconID, String string, boolean showIconOnly) {
Intent contentIntent = new Intent();
//Text that it says in the notification area when the notification appears
String dropDownText = "Notification Title";
Notification n = new Notification(R.drawable.notification_icon, "Notification Title", System.currentTimeMillis());
n.flags = Notification.FLAG_ONGOING_EVENT;
Intent intent = new Intent(context, MainActivity.class); //Activity that will be launched if notification is clicked
PendingIntent pending = PendingIntent.getActivity(context, 0, intent, 0);
n.setLatestEventInfo(context, "Notification Title", "Bottom Line", pending);
mNotificationManager.notify(NOTIFICATION_ID, n);
}
}
这是我的清单
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.testreciever"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.ACTION_HEADSET_PLUG"/>
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<receiver android:name="com.example.testreciever.BootCompletedReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<receiver
android:enabled="true"
android:name=".ItudeMobileBroadcastReceiver"
android:permission="android.permission.RECEIVE_BOOT_COMPLETED">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.ACTION_HEADSET_PLUG" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.MODIFY_AUDIO_SETTINGS" />
</intent-filter>
</receiver>
<activity
android:name="com.example.testreciever.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>
<activity
android:name="com.example.testreciever.Hope"
android:label="@string/title_activity_hope" >
</activity>
</application>
</manifest>
在启动它并显示启动它吐司，所以我知道它的工作。但它没有显示通知图标，当我插上耳机。我真的不知道该怎么办了。如果你能帮助，请不要。太感谢你了。
On boot it does show the "it booted" toast, so I know it's working. But it's not showing the notification icon when I plug in the earphones. I really just don't know what to do anymore. If you can help, please do. Thank You so much.
我知道通知code ++工程，因为如果我把它放在一个活动课，我启动它的工作程序，但我不希望有启动应用程序。我只是希望它在引导工作。
I know the notification code works, because if i put it in an activity class and i launch the app it works, but I don't want to have to launch the app. I just want it to work on boot.
推荐答案
的<一个href=\"http://grep$c$c.com/file/repository.grep$c$c.com/java/ext/com.google.android/android/2.3.7_r1/com/android/server/HeadsetObserver.java#HeadsetObserver\"相对=nofollow> HeadsetObserver 类负责广播 Intent.ACTION_HEADSET_PLUG 时，在输入/输出插入耳机。下面是一些code从 HeadsetObserver.sendIntent（）
The HeadsetObserver class is responsible for broadcasting Intent.ACTION_HEADSET_PLUG when a headset in plugged in/out. Here's some of the code from HeadsetObserver.sendIntent()
// Pack up the values and broadcast them to everyone
Intent intent = new Intent(Intent.ACTION_HEADSET_PLUG);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
int state = 0;
int microphone = 0;
if ((headset & HEADSETS_WITH_MIC) != 0) {
microphone = 1;
}
if ((headsetState & headset) != 0) {
state = 1;
}
intent.putExtra("state", state);
intent.putExtra("name", headsetName);
intent.putExtra("microphone", microphone);
if (LOG) Slog.v(TAG, "Intent.ACTION_HEADSET_PLUG: state: "+state+" name: "+headsetName+" mic: "+microphone);
// TODO: Should we require a permission?
ActivityManagerNative.broadcastStickyIntent(intent, null);
正如你所看到的，其目的是标记有<一个href=\"http://developer.android.com/reference/android/content/Intent.html#FLAG_RECEIVER_REGISTERED_ONLY\"相对=nofollow> Intent.FLAG_RECEIVER_REGISTERED_ONLY 。这意味着，广播不能被接收的广播接收器中的AndroidManifest.xml定义
As you can see, the intent is flagged with Intent.FLAG_RECEIVER_REGISTERED_ONLY. This means that the broadcast cannot be received by a BroadcastReceiver defined in your AndroidManifest.xml.
你必须有你的一些组件的应用程序运行，即一个服务或活动，并注册 registerReceiver（广播接收器接收，IntentFilter的过滤器接收器）
You have to have some component of you app running, ie. a Service or an Activity, and register the receiver with registerReceiver(BroadcastReceiver receiver, IntentFilter filter)
修改，例如code
就像我说的，你需要有你的应用程序运行的一些组件，领取 Intent.ACTION_HEADSET_PLUG 播出。最好的选择可能是一个服务。
As I said, you need to have some component of your app running, to receive the Intent.ACTION_HEADSET_PLUG broadcast. The best option is probably a Service.
所以让我们创建一个服务，HeadsetObserverService.java：
So lets create a Service, HeadsetObserverService.java:
public class HeadsetObserverService extends Service {
private static final String TAG = "HeadsetObserverService";
@Override
public IBinder onBind(Intent arg0) {
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// Create a filter. We are interested in the Intent.ACTION_HEADSET_PLUG action
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_HEADSET_PLUG);
// Register a new HeadsetReceiver
registerReceiver(new HeadsetReceiver(), filter);
// We return START_STICKY. If our service gets destroyed, Android will try to restart it when resources are available.
return START_STICKY;
}
private class HeadsetReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_HEADSET_PLUG)) {
int state = intent.getIntExtra("state", -1);
switch (state) {
case 0:
Log.d("unplugged", "Headset was unplugged");
// Cancel notification here
break;
case 1:
Log.d("plugged", "Headset is plugged");
// Show notification
break;
default:
Log.w("uh", "I have no idea what the headset state is");
}
}
}
}
}
如果你想要这个服务来自动启动，当手机重新启动，你需要一个广播接收器听为 Intent.ACTION_BOOT_COMPLETED 播出。
If you want this Service to be started automatically when the phone reboots, you'll need a BroadcastReceiver listening for the Intent.ACTION_BOOT_COMPLETED broadcast.
public class BootReceiver extends BroadcastReceiver {
private static final String TAG = "BootReceiver";
@Override
public void onReceive(Context context, Intent intent) {
Log.i(TAG, "onReceive() - Received broadcast");
if(intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
Log.i(TAG, "onReceive() - Intent action: " + Intent.ACTION_BOOT_COMPLETED);
Log.i(TAG, "onReceive() - Starting service..");
// Phone is booted, lets start the service
Intent serviceIntent = new Intent(context, HeadsetObserverService.class);
context.startService(serviceIntent);
}
}
}
您需要在新的服务和 BootReceiver 添加到您的AndroidManifest
You need to add the new Service and the BootReceiver to your AndroidManifest
<receiver
android:name=".BootReceiver"
android:enabled="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<service android:name=".HeadsetObserverService">
您也应该有一个活动，用户可以启动和停止 HeadsetObserverService
You should also have an Activity where the user can start and stop the HeadsetObserverService
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